| SAA | Shively Field Airport | Hayden |  United States of America |
| SAB | Juancho E. Yrausquin Airport | Saba |  Bonaire, Sint Eustatius and Saba |
| SAC | Sacramento Executive Airport | Sacramento | United States of America |
| SAD | Safford Airport | Tucson | United States of America |
| SAE | Sangir Airport | Manado |  Indonesia |
| SAF | Santa Fe Airport | Santa Fe | United States of America |
| SAG | Sagwon Airport | Prudhoe Bay/Deadhorse | United States of America |
| SAH | Sanaa International Airport (El Rahaba Airport) | Sana'a |  Yemen |
| SAJ | Sirajganj Airport | Dhaka |  Bangladesh |
| SAK | Saudarkrokur Airport | Akureyri |  Iceland |
| SAL | El Salvador International Airport | San Salvador |  El Salvador |
| SAM | Salamo Airport | Alotau |  Papua New Guinea |
| SAN | San Diego International Airport | San Diego | United States of America |
| SAP | Ramon Villeda Morales International Airport | San Pedro Sula |  Honduras |
| SAQ | San Andros Airport | Nassau |  Bahamas |
| SAR | Sparta Community Airport | Saint Louis | United States of America |
| SAS | Salton City Airport | Imperial | United States of America |
| SAT | San Antonio International Airport | San Antonio | United States of America |
| SAU | Tardamu Airport | Ende | Indonesia |
| SAV | Savannah/Hilton Head Airport | Savannah | United States of America |
| SAW | Sabiha Gokcen Airport | Istanbul |  Turkey |
| SAX | Sambu Airport | Jaque |  Panama |
| SAY | Siena Airport | Florence |  Italy |
| SAZ | Sasstown Airport | Monrovia |  Liberia |
| SBA | Santa Barbara Metropolitan Area Airport | Santa Barbara | United States of America |
| SBB | Santa Barbara Ba Airport | La Fria |  Venezuela (Bolivarian Republic of) |
| SBC | Selbang Airport | Tabubil | Papua New Guinea |
| SBD | San Bernardino International Airport | Ontario | United States of America |
| SBE | Suabi Airport | Tari | Papua New Guinea |
| SBF | Sardeh Band Airport | Kabul |  Afghanistan |
| SBG | Maimun Saleh Airport | Banda Aceh | Indonesia |
| SBH | Gustaf III (St-Jean) Airport | Saint Barthelemy |  Guadeloupe |
| SBI | Sambailo Airport | Conakry |  Guinea |
| SBJ | Sao Mateus Airport | Vitoria |  Brazil |
| SBK | Saint Brieuc-Armor Airport | Lannion |  France |
| SBL | Yacuma Airport | Trinidad |  Solomon Islands |
| SBM | Sheboygan County Memorial Airport | Milwaukee | United States of America |
| SBN | South Bend Regional Airport | South Bend | United States of America |
| SBO | Salina-Gunnison Airport | Provo | United States of America |
| SBP | San Luis County Regional Airport | San Luis Obispo | United States of America |
| SBQ | Sibi Airport | Quetta |  Pakistan |
| SBR | Saibai Island Airport | Horn Island |  Australia |
| SBS | Steamboat Springs Airport (Bob Adams Field) | Hayden | United States of America |
| SBT | Sabetta International Airport | Nadym |  Russian Federation |
| SBU | Springbok Airport | Upington |  South Africa |
| SBV | Sabah Airport | Rabaul | Papua New Guinea |
| SBW | Sibu Airport | Sibu |  Malaysia |
| SBX | Shelby Airport | Great Falls | United States of America |
| SBY | Wicomico Regional Airport | Salisbury-Ocean City | United States of America |
| SBZ | Sibiu Airport | Sibiu |  Romania |
| SCA | Santa Catalina Airport | Cartagena |  Colombia |
| SCB | Scribner State Airport | Omaha | United States of America |
| SCC | Prudhoe Bay/Deadhorse Airport | Prudhoe Bay/Deadhorse | United States of America |
| SCD | Sulaco Airport | San Pedro Sula | Honduras |
| SCE | University Park Airport | State College | United States of America |
| SCF | Scottsdale Municipalcipal | Phoenix | United States of America |
| SCG | Spring Creek Airport | Cairns | Australia |
| SCH | Schenectady County Airport | Albany | United States of America |
| SCI | Paramillo Airport | La Fria | Venezuela (Bolivarian Republic of) |
| SCJ | Smith Cove Airport | Hydaburg | United States of America |
| SCK | Stockton Metropolitan Airport | Sacramento | United States of America |
| SCL | Aeropuerto Internacional Comodoro Arturo Merino Benitez | Santiago |  Chile |
| SCM | Scammon Bay Airport | Scammon Bay | United States of America |
| SCN | Ensheim Airport | Saarbruecken |  Germany |
| SCO | Shevchenko Airport | Aktau |  Kazakhstan |
| SCP | St Crepin Airport | Nice | France |
| SCQ | Santiago De Compostela Airport | Santiago De Compostela |  Spain |
| SCT | Socotra Airport | Sana'a | Yemen |
| SCU | Antonio Maceo Airport | Santiago | Chile |
| SCV | Salcea Airport | Suceava | Romania |
| SCW | Syktyvkar Airport | Syktyvkar | Russian Federation |
| SCX | Salina Cruz Airport | Huatulco |  Mexico |
| SCY | San Cristobal Airport | San Cristobal |  Ecuador |
| SCZ | Santa Cruz Island Airport | Santa Ana | Solomon Islands |
| SDA | Baghdad International | Baghdad |  Iraq |
| SDB | Air Force Base Langebaanweg | Cape Town | South Africa |
| SDC | Sandcreek Airport | Georgetown |  Guyana |
| SDD | Lubango Airport | Lubango |  Angola |
| SDE | Santiago Del Estero Airport | Santiago Del Estero |  Argentina |
| SDF | Louisville International (Standiford Field) Airpor | Louisville | United States of America |
| SDG | Sanandaj Airport | Sanandaj |  Iran (Islamic Republic of) |
| SDH | Santa Rosa Copan Airport | San Pedro Sula | Honduras |
| SDI | Saidor Airport | Madang | Papua New Guinea |
| SDJ | Sendai Airport | Sendai |  Japan |
| SDK | Sandakan Airport | Sandakan | Malaysia |
| SDL | Sundsvall/harnosand Airport | Sundsvall |  Sweden |
| SDM | Brown Field Municipalcipal | San Diego | United States of America |
| SDN | Sandane Airport | Sandane |  Norway |
| SDO | Ryotsu Sado Island Airport | Niigata | Japan |
| SDP | Sand Point Municipal Airport | Sand Point | United States of America |
| SDQ | Aeropuerto Internacional de las Américas Airport | Santo Domingo |  Dominican Republic |
| SDR | Santander Airport | Santander | Spain |
| SDS | Sado Shima Airport | Niigata | Japan |
| SDT | Saidu Sharif Airport | Peshawar | Pakistan |
| SDU | Santos Dumont Airport | Rio De Janeiro | Brazil |
| SDV | Sde Dov | Tel Aviv-Yafo |  Israel |
| SDW | Sandwip Airport | Chittagong | Bangladesh |
| SDX | Sedona Airport | Prescott | United States of America |
| SDY | Richland Municipalcipal Airport | Sidney | United States of America |
| SEA | Seattle–Tacoma International Airport | Seattle | United States of America |
| SEB | Sebha Airport | Misurata |  Libya |
| SEC | Serre Chevalier Airport | Nice | France |
| SEE | Gillespie Field | San Diego | United States of America |
| SEF | Sebring Regional Airport | Punta Gorda | United States of America |
| SEG | Penn Valley Airport | Williamsport | United States of America |
| SEH | Senggeh Airport | Jayapura | Indonesia |
| SEI | Senhor Do Bonfim Airport | Petrolina | Brazil |
| SEJ | Seydisfjordur Airport | Egilsstadir | Iceland |
| SEK | Er Errachidia Airport | Srednekolymsk |  Morocco |
| SEM | Craig Field | Birmingham | United States of America |
| SEO | Seguela Airport | Korhogo |  Cote d'Ivoire |
| SEP | Clark Field Airport | Killeen | United States of America |
| SEQ | Sungai Pakning Airport | Pekanbaru | Indonesia |
| SER | Freeman Municipalcipal Airport | Louisville | United States of America |
| SES | Selfield Airport | Birmingham | United States of America |
| SET | San Esteban Airport | La Ceiba | Honduras |
| SEU | Seronera Airport | Seronera |  Tanzania |
| SEV | Severodoneck Airport | Kharkov |  Ukraine |
| SEW | Siwa Airport | Alexandria |  Egypt |
| SEX | Sembach Airport | Kaiserslautern | Germany |
| SEY | Selibaby Airport | Nouakchott |  Mauritania |
| SEZ | Seychelles International Airport | Mahe Island |  Seychelles |
| SFA | Sfax Thyna Airport | Sfax |  Tunisia |
| SFB | Orlando Sanford International Airport | Orlando | United States of America |
| SFC | St Francois Airport | Abymes | Guadeloupe |
| SFD | Las Flecheras Airport | Valencia | Venezuela (Bolivarian Republic of) |
| SFE | San Fernando Airport | Luzon Island | Spain |
| SFF | Felts Field | Spokane | United States of America |
| SFG | Grand Case-Esperance Airport | Saint Martin | Guadeloupe |
| SFH | San Felipe Airport | Mexicali | Mexico |
| SFI | Safi Airport | Essaouira | Morocco |
| SFJ | Kangerlussuaq Airport | Kangerlussuaq |  Greenland |
| SFK | Soure Airport | Belem | Brazil |
| SFL | Sao Filipe Airport | Praia |  Cabo Verde |
| SFM | Sanford Seacoast Regional Airport | Portland | United States of America |
| SFN | Sauce Viejo Airport | Santa Fe | Argentina |
| SFO | San Francisco International Airport | San Francisco | United States of America |
| SFP | Surfers Paradise Airport | Coolangatta (Gold Coast) | Australia |
| SFQ | Sanliurfa Airport | Golgen | Turkey |
| SFR | San Fernando Airport | Salamanca | Spain |
| SFT | Skelleftea Airport | Skelleftea | Sweden |
| SFU | Safia Airport | Popondetta | Papua New Guinea |
| SFV | Santa Fe Do Sul Airport | Aracatuba | Brazil |
| SFX | San Felix Airport | Puerto Ordaz | Venezuela (Bolivarian Republic of) |
| SFZ | North Central Airport | Providence | United States of America |
| SGA | Sheghnan Airport | Faizabad | Afghanistan |
| SGB | Singaua Airport | Lae | Papua New Guinea |
| SGC | Surgut Airport | Surgut | Russian Federation |
| SGD | Sonderborg Airport | Sonderborg |  Denmark |
| SGE | Siegerland Airport | Frankfurt | Germany |
| SGF | Springfield-Branson Rg Airport | Springfield | United States of America |
| SGG | Simanggang Airport | Sarikei | Malaysia |
| SGH | Springfield–Beckley Municipal Airport | Dayton | United States of America |
| SGI | PAF Base Mushaf | Faisalabad | Pakistan |
| SGJ | Sagarai Airport | Alotau | Papua New Guinea |
| SGK | Sangapi Airport | Mount Hagen | Papua New Guinea |
| SGL | Danilo Atienza Air Base | Manila |  Philippines |
| SGM | San Ignacio Airport | Loreto | Mexico |
| SGN | Tan Son Nhat International Airport | Ho Chi Minh City |  Viet Nam |
| SGO | St George Airport | Roma | Australia |
| SGP | Shay Gap Airport | Port Hedland | Australia |
| SGQ | Sanggata Airport | Samarinda | Indonesia |
| SGR | Sugar Land Regional Airport | Houston | United States of America |
| SGS | Sanga Sanga Airport | Zamboanga | Philippines |
| SGT | Stuttgart Municipalcipal Airport | Little Rock | United States of America |
| SGU | St. George Regional Airport | Saint George | United States of America |
| SGV | Sierra Grande Airport | Trelew | Argentina |
| SGW | Saginaw Seaplane Base | Kake | United States of America |
| SGX | Songea Airport | Mbeya | Tanzania |
| SGY | Skagway Municipal Airport | Haines | United States of America |
| SGZ | Songkhla Airport | Hat Yai |  Thailand |
| SHA | Shanghai Hongqiao International Airport | Shanghai |  China |
| SHB | Nakashibetsu Airport | Nakashibetsu | Japan |
| SHC | Indaselassie Airport | Axum |  Ethiopia |
| SHD | Shenandoah Valley Airport | Staunton | United States of America |
| SHE | Shenyang Airport | Shenyang | China |
| SHF | Shihezi Huayuan Airport | Urumqi | China |
| SHG | Shungnak Airport | Shungnak | United States of America |
| SHH | Shishmaref Airport | Shishmaref | United States of America |
| SHI | Shimojishima Airport | Miyako | Japan |
| SHJ | Sharjah Airport | Sharjah |  United Arab Emirates |
| SHK | Sehonghong Airport | Maseru |  Lesotho |
| SHL | Barapani Airport | Umroi |  India |
| SHM | Shirahama Airport | Shirahama | Japan |
| SHN | Sanderson Field Airport | Seattle | United States of America |
| SHO | Seolak Airport | Manzini |  Korea (Republic of) |
| SHP | Qinhuangdao Airport | Qinhuangdao | China |
| SHQ | Southport Airport | Coolangatta (Gold Coast) | Australia |
| SHR | Sheridan Airport | Gillette | United States of America |
| SHS | Shashi Airport | Yichang | China |
| SHT | Shepparton Airport | Melbourne | Australia |
| SHU | Smith Point Airport | Darwin | Australia |
| SHV | Shreveport Regional Airport | Shreveport | United States of America |
| SHW | Sharurah Airport | Sharurah |  Saudi Arabia |
| SHX | Shageluk Airport | Shageluk | United States of America |
| SHY | Shinyanga Airport | Mwanza | Tanzania |
| SHZ | Seshutes Airport | Maseru | Lesotho |
| SIA | Xiguan | Xian | China |
| SIB | Sibiti Airport | Pointe Noire |  Congo |
| SIC | San Jose Airport | Panama City | Panama |
| SID | Amilcar Cabral International Airport | Sal | Cabo Verde |
| SIE | Sines Airport | Lisbon |  Portugal |
| SIF | Simara Airport | Kathmandu |  Nepal |
| SIG | Isla Grande | San Juan |  Peru |
| SIH | Silgadi Doti Airport | Nepalganj | Nepal |
| SII | Sidi Ifni Airport | Goulimime | Morocco |
| SIJ | Siglufjordur Airport | Akureyri | Iceland |
| SIK | Sikeston Memorial Municipal Airport | Cape Girardeau | United States of America |
| SIL | Sila Airport | Popondetta | Papua New Guinea |
| SIM | Simbai Airport | Mount Hagen | Papua New Guinea |
| SIN | Changi Airport | Singapore |  Singapore |
| SIO | Smithton Airport | Burnie | Australia |
| SIP | Simferopol Airport | Simferopol | Russian Federation |
| SIQ | Dabo Airport | Tanjung Pinang | Indonesia |
| SIR | Sion Airport | Berne |  Switzerland |
| SIS | Sishen Airport | Sishen | South Africa |
| SIT | Sitka Airport | Sitka | United States of America |
| SIU | Siuna Airport | Managua |  Nicaragua |
| SIV | Sullivan County Airport | Evansville | United States of America |
| SIW | Sibisa Airport | Kuala Namu | Indonesia |
| SIX | Singleton Airport | Newcastle | Australia |
| SIY | Siskiyou County Airport | Medford | United States of America |
| SIZ | Sissano Airport | Vanimo | Papua New Guinea |
| SJA | San Juan de Marcona Airport | Pisco | Peru |
| SJB | San Joaquin Airport | Trinidad |  Bolivia (Plurinational State of) |
| SJC | San Jose International Airport | San Jose | United States of America |
| SJD | Los Cabos Airport | San Jose Cabo | Mexico |
| SJE | Jorge Enrique Gonzalez Torres Airport | Villavicencio | Colombia |
| SJF | Cruz Bay Seaplane Base | Beef Island |  Virgin Islands (British) |
| SJG | San Pedro Jagua Airport | Villavicencio | Colombia |
| SJH | San Juan Del Cesar Airport | Valledupar | Colombia |
| SJI | Mcguire Field Airport | Busuanga | United States of America |
| SJJ | Sarajevo Airport | Sarajevo |  Bosnia and Herzegovina |
| SJK | Sao Jose Dos Campos Airport | Sao Paulo | Brazil |
| SJL | Da Cachoeira Airport | Tefe | Brazil |
| SJN | St. Johns Industrial Air Park Airport | Show Low | United States of America |
| SJO | Juan Santamaria International Airport | San Jose |  Costa Rica |
| SJP | Sao Jose Do Rio Preto Airport | Sao Jose Do Rio Preto | Brazil |
| SJQ | Sesheke Airport | Livingstone |  Zambia |
| SJR | San Juan de Uraba Airport | Monteria | Colombia |
| SJS | San Jose de Chiquitos Airport | Santa Cruz | United States of America |
| SJT | San Angelo Regional Airport (Mathis Field) | San Angelo | United States of America |
| SJU | Luis Munoz Marin International Airport | San Juan |  Puerto Rico |
| SJV | San Javier Airport | Santa Cruz | Bolivia (Plurinational State of) |
| SJW | Daguocun Airport | Shijiazhuang | China |
| SJX | Sarteneja Airport | Belize City |  Belize |
| SJY | Ilmajoki Airport | Kokkola/Pietarsaari |  Finland |
| SJZ | Sao Jorge Island Airport | Sao Jorge Island | Portugal |
| SKA | Fairchild Air Force Base | Spokane | United States of America |
| SKB | Robert L Bradshaw International Airport | Saint Kitts |  Saint Kitts and Nevis |
| SKC | Suki Airport | Daru | Papua New Guinea |
| SKD | Samarkand Airport | Samarkand |  Uzbekistan |
| SKE | Skien Airport | Notodden | Norway |
| SKF | Kelly Field Annex / Lackland Air Force Base | San Antonio | United States of America |
| SKG | Macedonia International Airport | Thessaloniki |  Greece |
| SKH | Surkhet Airport (Birendranagar Airport) | Nepalganj | Nepal |
| SKI | Skikda Airport | Constantine |  Algeria |
| SKJ | Sitkinak Cgs Airport | Alitak | United States of America |
| SKK | Shaktoolik Airport | Shaktoolik | United States of America |
| SKL | Broadford Airport | Stornoway, Outer Stat Hebrides |  United Kingdom of Great Britain and Northern Ireland |
| SKM | Skeldon Airport | Georgetown | Guyana |
| SKN | Skagen Airport | Stokmarknes | Norway |
| SKO | Sokoto Airport | Kaduna |  Nigeria |
| SKP | Alexander The Great Airport | Skopje |  Macedonia (the former Yugoslav Republic of) |
| SKQ | Sekakes Airport | Maseru | Lesotho |
| SKR | Shakiso Airport | Arba Mintch | Ethiopia |
| SKS | Vojens Airport (Skrydstrup Airport) | Billund | Denmark |
| SKT | Sialkot International Airport | Sialkot | Pakistan |
| SKU | Skiros Airport | Skiros | Greece |
| SKV | St. Catherine International Airport | Sharm el Sheikh | Egypt |
| SKW | Skwentna Airport | Kenai | United States of America |
| SKX | Saransk Airport | Saransk | Russian Federation |
| SKY | Griffing Sandusky Airport | Toledo | United States of America |
| SKZ | Sukkur Airport | Sukkur | Pakistan |
| SLA | Martin Miguel de Guemes International Airport | Salta | Argentina |
| SLB | Storm Lake Municipal Airport | Fort Dodge | United States of America |
| SLC | Salt Lake City International Airport | Salt Lake City | United States of America |
| SLD | Sliac Airport | Poprad/Tatry |  Slovakia |
| SLE | Mcnary Field Airport | Portland | United States of America |
| SLF | Sulayel Airport | Wadi Ad Dawasir | Saudi Arabia |
| SLG | Smith Field Airport | Fort Smith | United States of America |
| SLH | Sola Airport | Torres |  Vanuatu |
| SLI | Solwezi | Solwezi | Zambia |
| SLJ | Stellar Air Park Airport | Phoenix | United States of America |
| SLK | Adirondack Airport | Saranac Lake | United States of America |
| SLL | Salalah Airport | Salalah |  Oman |
| SLM | Matacan Airport | Salamanca | Spain |
| SLN | Salina Regional Airport | Salina | United States of America |
| SLO | Leckrone Airport | Marion | United States of America |
| SLP | San Luis Potosi Airport | San Luis Potosi | Mexico |
| SLQ | Sleetmute Airport | Tatalina | United States of America |
| SLR | Sulphur Springs Airport | Tyler | United States of America |
| SLS | Silistra Airport | Varna |  Bulgaria |
| SLT | Harriet Alexander Field | Gunnison | United States of America |
| SLU | George F L Charles Airport | Saint Lucia |  Saint Lucia |
| SLV | Shimla Airport | Chandigarh | India |
| SLW | Saltillo Airport | Saltillo | Mexico |
| SLX | Salt Cay Airport | Providenciales |  Turks and Caicos Islands |
| SLY | Salekhard Airport | Salekhard | Russian Federation |
| SLZ | Marechal Cunha Machado Airport | Sao Luiz | Brazil |
| SMA | Vila Do Porto Airport | Santa Maria (Azores) | Brazil |
| SMB | Cerro Sombrero Airport | Punta Arenas | Chile |
| SMC | Santa Maria Airport | Apartado | Colombia |
| SMD | Smith Field | Fort Wayne | United States of America |
| SME | Lake Cumberland Regional Airport | Lexington | United States of America |
| SMF | Sacramento International Airport | Sacramento | United States of America |
| SMG | Santa Maria Airport | Lima | Peru |
| SMH | Sapmanga Airport | Lae | Papua New Guinea |
| SMI | Samos Airport | Samos | Greece |
| SMJ | Sim Airport | Lae | Papua New Guinea |
| SMK | St Michael Airport | Saint Michael | United States of America |
| SML | Stella Maris Airport | Deadmans Cay | Bahamas |
| SMM | Semporna Airport | Lahad Datu | Malaysia |
| SMN | Salmon Airport | Sun Valley | United States of America |
| SMO | Santa Monica Airport | Burbank | United States of America |
| SMP | Stockholm Airport | Rabaul | Papua New Guinea |
| SMQ | Sampit Airport | Sampit | Indonesia |
| SMR | Simon Bolivar Airport | Santa Marta | Colombia |
| SMS | Sainte Marie Airport | Antananarivo |  Madagascar |
| SMU | Sheep Mountain Airport | Valdez | United States of America |
| SMV | Samedan Airport | Altenrhein | Switzerland |
| SMW | Smara Airport | Laayoune | Morocco |
| SMX | Public Airport | Santa Maria | Brazil |
| SMY | Simenti Airport | Dakar |  Senegal |
| SMZ | Stoelmans Eiland | Paramaribo |  Suriname |
| SNA | John Wayne Airport | Santa Ana | Solomon Islands |
| SNB | Snake Bay Airport | Darwin | Australia |
| SNC | General Ulpiano Paez Airport | Salinas | Ecuador |
| SND | Seno Airport | Pakse |  Lao People's Democratic Republic |
| SNE | Preguica Airport | Sao Vicente | Cabo Verde |
| SNF | Sub Teniente Nestor Arias Airport | Barquisimeto | Venezuela (Bolivarian Republic of) |
| SNG | San Ignacio De Velasco Airport | Santa Cruz | Bolivia (Plurinational State of) |
| SNH | Stanthorpe Airport | Lismore | Australia |
| SNI | Greenville/Sinoe Airport (R.E. Murray Airport) | Monrovia | Liberia |
| SNJ | San Julian Airport | Nueva Gerona |  Cuba |
| SNK | Winston Field Airport | Abilene | United States of America |
| SNL | Shawnee Municipal Airport | Oklahoma City | United States of America |
| SNM | San Ignacio de Moxos Airport | Trinidad | Bolivia (Plurinational State of) |
| SNN | Shannon Airport | Shannon |  Ireland |
| SNO | Sakon Nakhon Airport | Sakon Nakhon | Thailand |
| SNP | Saint Paul Island Airport | Saint Paul Island | United States of America |
| SNQ | San Quintin Military Airstrip | Mexicali | Mexico |
| SNR | Montoir Airport | Saint Nazaire | France |
| SNS | Salinas Airport | Monterey | Ecuador |
| SNT | Sabana De Torres Airport | Bucaramanga | Colombia |
| SNU | Abel Santa Maria Airport | Santa Clara | Cuba |
| SNV | Santa Elena de Uairen Airport | Puerto Ordaz | Venezuela (Bolivarian Republic of) |
| SNW | Thandwe Airport | Thandwe |  Myanmar |
| SNY | Sidney Municipal Airport (Lloyd W. Carr Field) | Alliance | United States of America |
| SNZ | Santa Cruz Air Force Base | Rio De Janeiro | Argentina |
| SOA | Soc Trang Airport | Can Tho | Viet Nam |
| SOB | Sarmellek/Balaton Airport | Budapest |  Hungary |
| SOC | Adi Sumarmo Airport | Surakarta | Indonesia |
| SOD | Sorocaba Airport | Sao Paulo | Brazil |
| SOE | Souanke Airport | Brazzaville | Congo |
| SOF | Sofia Airport | Sofia | Bulgaria |
| SOG | Haukasen Airport | Sogndal | Norway |
| SOI | South Molle Island Airport | Hamilton Island | Australia |
| SOJ | Sorkjosen Airport | Sorkjosen | Norway |
| SOK | Semongkong Airport | Maseru | Lesotho |
| SOL | Solomon State Field Airport | Nome | United States of America |
| SOM | Edmundo Barrios Airport | Maturin | Venezuela (Bolivarian Republic of) |
| SON | Pekoa Airport | Espiritu Santo | Vanuatu |
| SOO | Soderhamn Airport | Gavle | Sweden |
| SOP | Pinehurst-S. Pines Airport | Fayetteville | United States of America |
| SOQ | Dominique Edward Osok Airport | Sorong | Indonesia |
| SOR | Al Thaurah Airport | Kameshli |  Syrian Arab Republic |
| SOT | Sodankyla Airport | Rovaniemi | Finland |
| SOU | Southampton Airport | Southampton | United Kingdom of Great Britain and Northern Ireland |
| SOV | Seldovia Airport | Homer | United States of America |
| SOW | Show Low Regional Airport | Show Low | United States of America |
| SOX | Alberto Lleras Camargo Airport | El Yopal | Colombia |
| SOY | Stronsay Airport | Stronsay | United Kingdom of Great Britain and Northern Ireland |
| SOZ | Solenzara Airport | Figari | France |
| SPA | Spartanburg Downtown Memorial Airport | Greenville | United States of America |
| SPB | Charlotte Amalie Harbor Seaplane Base (St. Thomas Seaplane Base) | Beef Island | Virgin Islands (British) |
| SPC | La Palma Airport | Santa Cruz De La Palma | Spain |
| SPD | Saidpur Airport | Saidpur | Bangladesh |
| SPE | Sepulot Airport | Lawas | Malaysia |
| SPF | Black Hills Airport (Clyde Ice Field) | Rapid City | United States of America |
| SPG | Whitted Airport | Tampa | United States of America |
| SPH | Sopu Airport | Port Moresby | Papua New Guinea |
| SPI | Abraham Lincoln Capital Airport | Springfield | United States of America |
| SPJ | Sparti Airport | Kalamata | Greece |
| SPM | Spangdahlem Air Base | Saarbruecken | Germany |
| SPN | Saipan International Airport | Saipan |  Northern Mariana Islands |
| SPP | Menongue Airport | Lubango | Angola |
| SPR | John Greif II Airport | Belize City | Belize |
| SPS | Sheppard Air Force Base / Wichita Falls Municipal Airport | Wichita Falls | United States of America |
| SPT | Sipitang Airport | Lawas | Malaysia |
| SPU | Split Airport | Split |  Croatia |
| SPV | Sepik Plains Airport | Wewak | Papua New Guinea |
| SPW | Spencer Municipal Airport | Fort Dodge | United States of America |
| SPX | Spaceland | Fort Myers | United States of America |
| SPY | San Pedro Airport | Abidjan | Cote d'Ivoire |
| SPZ | Springdale Municipal Airport | Fort Smith | United States of America |
| SQA | Santa Ynez Airport | Santa Barbara | United States of America |
| SQB | Santa Ana Airport | Pereira | Colombia |
| SQC | Southern Cross Airport | Kalgoorlie | Australia |
| SQD | Shangrao Sanqingshan Airport | Wuyishan | China |
| SQE | San Luis de Palenque Airport | El Yopal | Colombia |
| SQG | Sintang Airport | Sorong | Indonesia |
| SQH | Na-San Airport | Dien Bien Phu | Viet Nam |
| SQI | Whiteside County Airport | Moline | United States of America |
| SQJ | Sanming Shaxian Airport | Wuyishan | China |
| SQK | Sidi Barani Airport | Alexandria | Egypt |
| SQL | San Carlos Airport (California) | Hayward | United States of America |
| SQM | Sao Miguel de Aragao Airport | Brasilia | Brazil |
| SQN | Sanana Airport | Ambon | Indonesia |
| SQO | Gunnarn Airport | Lycksele | Sweden |
| SQQ | Siauliai International Airport | Kaunas |  Lithuania |
| SQR | Inco Soroako Waws Airport | Kendari | Indonesia |
| SQS | Matthew Spain Airport | Belize City | Belize |
| SQT | China Straits Airstrip Airport | Alotau | Papua New Guinea |
| SQU | Saposoa Airport | Tarapoto | Peru |
| SQV | Sequim Valley Airport | Friday Harbor | United States of America |
| SQW | Skive Airport | Karup | Denmark |
| SQX | Helio Wasum Airport | Chapeco | Brazil |
| SQY | Sao Lourenco Do Sul Airport | Pelotas | Brazil |
| SQZ | RAF Scampton | Humberside | United Kingdom of Great Britain and Northern Ireland |
| SRA | Santa Rosa Airport | Santa Maria | Brazil |
| SRB | Santa Rosa Airport | Trinidad | Bolivia (Plurinational State of) |
| SRC | Searcy Airport | Little Rock | United States of America |
| SRD | San Ramon Airport | Trinidad | Bolivia (Plurinational State of) |
| SRE | Juana Azurduy de Padilla Airport | Sucre | Bolivia (Plurinational State of) |
| SRF | San Rafael Airport (Hamilton Field) | San Francisco | Argentina |
| SRG | Achmad Yani Airport | Semarang | Indonesia |
| SRH | Sarh Airport | Ndjamena |  Chad |
| SRI | Samarinda Airport | Samarinda | Indonesia |
| SRJ | Capitan German Quiroga Guardia Airport | Trinidad | Bolivia (Plurinational State of) |
| SRK | Sierra Leone Airport | Freetown |  Sierra Leone |
| SRL | Palo Verde Airport | Loreto | Mexico |
| SRM | Sandringham Airport | Mount Isa | Australia |
| SRN | Strahan Airport | Burnie | Australia |
| SRO | Santana Ramos Airport | Florencia | Colombia |
| SRP | Stord Airport | Stord | Norway |
| SRQ | Sarasota/Bradenton International Airport | Sarasota | United States of America |
| SRR | Dunwich Airport | Brisbane | Australia |
| SRS | San Marcos Airport | Corozal | Colombia |
| SRT | Soroti Airport | Entebbe |  Uganda |
| SRV | Stony River Airport | Tatalina | United States of America |
| SRW | Rowan County Airport | Charlotte | United States of America |
| SRX | Sert Airport | Misurata | Libya |
| SRY | Dashte Naz Airport | Sary | Iran (Islamic Republic of) |
| SRZ | El Trompillo Airport | Santa Cruz | Bolivia (Plurinational State of) |
| SSA | Deputado Luis Eduardo Magalhaes International Airport | Salvador | Brazil |
| SSB | Christiansted Harbor Seaplane Base (St. Croix Seaplane Base) | Beef Island | Virgin Islands (British) |
| SSC | Shaw Air Force Base | Columbia | United States of America |
| SSD | San Felipe Airport | Santiago | Colombia |
| SSE | Sholapur Airport | Belgaum | India |
| SSF | Stinson Municipal Airport | San Antonio | United States of America |
| SSG | Malbo Airport | Malabo |  Equatorial Guinea |
| SSH | Sharm El Sheikh International Airport | Sharm el Sheikh | Egypt |
| SSI | Malcolm McKinnon St. Simons Island Airport | Brunswick | United States of America |
| SSJ | Stokka Airport | Sandnessjoen | Norway |
| SSK | Sturt Creek Airport | Kununurra | Australia |
| SSL | Santa Rosalia Airport | El Yopal | Colombia |
| SSN | Seoul AB | Seoul | Korea (Republic of) |
| SSO | Sao Lourenco Airport | Varginha | Brazil |
| SSP | Silver Plains Airport | Weipa | Australia |
| SSQ | La Sarre | Rouyn |  Canada |
| SSR | Sara Airport | Espiritu Santo | Vanuatu |
| SSS | Siassi Airport | Lae | Papua New Guinea |
| SST | Santa Teresita Airport | Mar Del Plata | Argentina |
| SSV | Siasi Airport | Zamboanga | Philippines |
| SSW | Stuart Island Airport | Friday Harbor | United States of America |
| SSX | Samsun Airport | Samsun | Turkey |
| SSZ | Santos Air Force Base | Sao Paulo | Brazil |
| STA | Stauning Vestjyllands Airport | Esbjerg | Denmark |
| STB | Miguel Urdaneta Fernández Airport | La Fria | Venezuela (Bolivarian Republic of) |
| STC | St. Cloud Regional Airport | Brainerd | United States of America |
| STD | Mayo Guerrero Airport | Cucuta | Dominican Republic |
| STE | Stevens Point Airport | Wausau | United States of America |
| STF | Stephen Island Airport | Palm Island | Australia |
| STG | St George Island Airport | Saint George Island | United States of America |
| STH | Strathmore Airport | Normanton | Australia |
| STI | Cibao International Airport | Santiago | Chile |
| STJ | Rosecrans Memorial Airport | Kansas City | United States of America |
| STK | Sterling Municipal Airport | Scottsbluff | United States of America |
| STL | Lambert–St. Louis International Airport | Saint Louis | United States of America |
| STM | Santarem-Maestro Wilson Fonseca Airport | Santarem | Brazil |
| STN | Stansted Airport | London | United Kingdom of Great Britain and Northern Ireland |
| STP | St. Paul Downtown Airport (Holman Field) | Minneapolis | United States of America |
| STQ | St Marys Airport | Bradford | United States of America |
| STR | Stuttgart Echterdingen Airport | Stuttgart | United States of America |
| STS | Sonoma County Airport | Santa Rosa | Argentina |
| STT | Cyril E King Airport | Saint Thomas | Virgin Islands (British) |
| STV | Surat Airport | Surat Gujarat | India |
| STW | Stavropol Airport | Stavropol | Russian Federation |
| STX | Henry E Rohlsen Airport | Saint Croix | Virgin Islands (British) |
| STY | Salto Airport | Montevideo |  Uruguay |
| STZ | Santa Terezinha Airport | Palmas | Brazil |
| SUA | Witham Field Airport | West Palm Beach | United States of America |
| SUB | Juanda Airport | Surabaya | Indonesia |
| SUD | Stroud Airport | Stillwater | United States of America |
| SUE | Door County Airport | Green Bay | United States of America |
| SUF | Lamezia Terme Airport | Lamezia-Terme | Italy |
| SUG | Surigao Airport | Surigao | Philippines |
| SUH | Sur Airport | Muscat | Oman |
| SUI | Babusheri Airport | Sukhumi |  Georgia |
| SUJ | Satu Mare Airport | Satu Mare | Romania |
| SUK | Sakkyryr Airport | Batagay-Alyta | Russian Federation |
| SUL | Sui Airport | Sukkur | Pakistan |
| SUM | Sumter Municipal Airport | Florence | United States of America |
| SUN | Sun Valley Airport | Sun Valley | United States of America |
| SUO | Sun River Airport | Redmond | United States of America |
| SUP | Trunojoyo Airport | Surabaya | Indonesia |
| SUQ | Sucua Airport | Cuenca | Ecuador |
| SUR | Summer Beaver Airport | Wunnummin Lake | Canada |
| SUS | Spirit of St. Louis Airport | Saint Louis | United States of America |
| SUT | Sumbawanga Airport | Mbeya | Tanzania |
| SUU | Travis AFB | Concord | United States of America |
| SUV | Nausori Airport | Suva |  Fiji |
| SUW | Richard I Bong Airport | Duluth | United States of America |
| SUX | Sioux Gateway Airport | Sioux City | United States of America |
| SUY | Suntar Airport | Suntar | Russian Federation |
| SUZ | Suria Airport | Port Moresby | Papua New Guinea |
| SVA | Savoonga Airport | Savoonga | United States of America |
| SVB | Sambava Airport | Nossi-be | Madagascar |
| SVC | Grant County Airport | Silver City | United States of America |
| SVD | E. T. Joshua Airport | Saint Vincent |  Saint Vincent and the Grenadines |
| SVE | Susanville Airport | Reno | United States of America |
| SVF | Save Airport | Cotonou |  Benin |
| SVG | Sola Airport | Stavanger | Norway |
| SVH | Statesville Municipal Airport | Charlotte | United States of America |
| SVI | Eduardo Falla Solano Airport | Neiva | Colombia |
| SVJ | Helle Airport | Svolvaer | Norway |
| SVK | Silver Creek Airport | Belize City | Belize |
| SVL | Savonlinna Airport | Savonlinna | Finland |
| SVN | Hunter Army Airfield | Savannah | United States of America |
| SVO | Sheremetyevo Airport | Moscow | Russian Federation |
| SVP | Kuito (Silva Porto) Airport | Catumbela | Angola |
| SVQ | Seville Airport | Sevilla | Spain |
| SVS | Stevens Village Airport | Fairbanks | United States of America |
| SVT | Savuti Airport | Kasane |  Botswana |
| SVU | Savusavu Airport | Savusavu | Fiji |
| SVW | Sparrevohn AFS | Iliamna | United States of America |
| SVX | Koltsovo International Airport | Yekaterinburg | Russian Federation |
| SVY | Savo | Honiara | Solomon Islands |
| SVZ | Juan Vicente Gómez International Airport | La Fria | Venezuela (Bolivarian Republic of) |
| SWA | Shantou Airport | Jieyang | China |
| SWB | Shaw River Airport | Port Hedland | Australia |
| SWC | Stawell Airport | Mount Gambier | Australia |
| SWD | Seward Airport | Anchorage | United States of America |
| SWE | Siwea Airport | Lae | Papua New Guinea |
| SWF | Stewart Airport | Newburgh | United States of America |
| SWG | Satwag Airport | Lae | Papua New Guinea |
| SWH | Swan Hill Airport | Mildura | Australia |
| SWJ | South West Bay Airport | Norsup | Vanuatu |
| SWL | San Vicente | Spanish Wells | Philippines |
| SWM | Suia-Missu Airport | Palmas | Brazil |
| SWN | Sahiwal Airport | Faisalabad | Pakistan |
| SWO | Searcy Field Airport | Stillwater | United States of America |
| SWP | Swakopmund Airport | Walvis Bay |  Namibia |
| SWQ | Brang Bidji Airport | Sumbawa Besar | Indonesia |
| SWR | Silur Airport | Rabaul | Papua New Guinea |
| SWS | Swansea Airport | Cardiff | United Kingdom of Great Britain and Northern Ireland |
| SWT | Strzhewoi Airport | Strezhevoy | Russian Federation |
| SWU | Suwon Airport | Seoul | Korea (Republic of) |
| SWV | Severo-Evensk Airport | Evensk | Russian Federation |
| SWW | Sweetwater Airport | Abilene | United States of America |
| SWX | Shakawe Airport | Maun | Botswana |
| SWY | Sitiawan Airport | Ipoh | Malaysia |
| SXA | Sialum Airport | Lae | Papua New Guinea |
| SXB | Entzheim Airport | Strasbourg | France |
| SXE | West Sale Airport | Melbourne | Australia |
| SXF | Berlin-Schoenefeld Airport | Berlin | Germany |
| SXG | Senanga Airport | Kalabo | Zambia |
| SXH | Sehulea Airport | Alotau | Papua New Guinea |
| SXI | Sirri Island Airport | Kish Island | Iran (Islamic Republic of) |
| SXJ | Shanshan Airport | Urumqi | China |
| SXK | Saumlaki Airport | Saumlaki | Indonesia |
| SXL | Sligo Airport | Knock | Ireland |
| SXM | Princess Juliana International Airport | Sint Maarten |  Sint Maarten (Dutch part) |
| SXN | Sua Pan Airport / Sowa Airport | Francistown | Botswana |
| SXO | Sao Felix Do Araguaia Airport | Palmas | Brazil |
| SXP | Sheldon Point Airport | Sheldon Point | United States of America |
| SXQ | Soldotna Airport | Kenai | United States of America |
| SXR | Sheikh ul Alam International Airport | Srinagar | India |
| SXS | Sahabat 16 Airport | Lahad Datu | Malaysia |
| SXT | Sungai Tiang Airport / Taman Negara Airport | Kuantan | Malaysia |
| SXU | Soddu Airport | Arba Mintch | Ethiopia |
| SXV | Salem Airport | Tiruchirappalli | United States of America |
| SXW | Sauren Airport | Hoskins | Papua New Guinea |
| SXX | Sao Felix Do Xingu Airport | Carajas | Brazil |
| SXY | Sidney Municipal Airport-N23 | Binghamton | United States of America |
| SXZ | Siirt Airport | Siirt | Turkey |
| SYA | Eareckson Air Station | Anadyr | United States of America |
| SYB | Seal Bay Seaplane Base | Kitoi Bay | United States of America |
| SYC | Shiringayoc Airport | Puerto Maldonado | Peru |
| SYD | Sydney Airport International (Kingsford Smith Airport) | Sydney | Australia |
| SYE | Sadah Airport | Sana'a | Yemen |
| SYF | Silva Bay Seaplane Base | Nanaimo | Canada |
| SYG | Syangboche Airport | Tumling Tar | Nepal |
| SYH | Syangboche Airport | Tumling Tar | Nepal |
| SYI | Bomar Field Airport | Nashville | United States of America |
| SYJ | Sirjan Airport | Kerman | Iran (Islamic Republic of) |
| SYK | Stykkisholmur Airport | Isafjordur | Iceland |
| SYM | Simao Airport | Pu'er | China |
| SYN | Stanton Airfield | Minneapolis | United States of America |
| SYO | Shonai Airport | Shonai | Japan |
| SYP | Ruben Cantu Airport | David | Chile |
| SYQ | Tobias Bolaños International | San Jose | Costa Rica |
| SYR | Syracuse Hancock International Airport | Syracuse | United States of America |
| SYS | Saskylakh Airport | Olenyok | Russian Federation |
| SYT | Saint-Yan Airport (Charolais Bourgogne Sud Airport) | Saint Etienne | France |
| SYU | Warraber Island Airport | Horn Island | Australia |
| SYV | Sylvester Airport | Albany | United States of America |
| SYW | Sehwen Sharif Airport | Sukkur | Pakistan |
| SYX | Sanya Phoenix International Airport | Sanya | China |
| SYY | Stornoway Airport | Stornoway, Outer Stat Hebrides | United Kingdom of Great Britain and Northern Ireland |
| SYZ | Shahid Dastghaib International Airport | Shiraz | Iran (Islamic Republic of) |
| SZA | Soyo Airport | Soyo | Angola |
| SZB | Sultan Abdul Aziz Shah | Kuala Lumpur | Malaysia |
| SZD | Sheffield City Airport | Montgomery | United States of America |
| SZE | Semera Airport | Semera | Ethiopia |
| SZF | Carsamba | Samsun | Turkey |
| SZG | W. A. Mozart Airport | Salzburg |  Austria |
| SZI | Zaysan Airport | Zaisan | Kazakhstan |
| SZJ | Siguanea Airport | Nueva Gerona | Cuba |
| SZK | Skukuza Airport | Skukuza | South Africa |
| SZL | Whiteman Air Force Base | Kansas City | United States of America |
| SZM | Sesriem | Walvis Bay | Namibia |
| SZN | Santa Cruz Island | Santa Barbara | United States of America |
| SZP | Santa Paula Airport | Santa Barbara | United States of America |
| SZQ | Aeropuerto Presidencia Roque Saenz Pena | Resistencia | Argentina |
| SZR | Stara Zagora Airport | Plovdiv | Bulgaria |
| SZS | Stewart Island Airport | Invercargill |  New Zealand |
| SZT | San Cristobal Airport | Tuxtla Gutierrez | Mexico |
| SZU | Segou Airport | Bamako |  Mali |
| SZV | Suzhou Guangfu Airport | Wuxi | China |
| SZW | Parchim Airport | Rostock-Laage | Germany |
| SZX | Shenzhen Airport | Shenzhen | China |
| SZY | Mazury Airport | Warsaw |  Poland |
| SZZ | Goleniow Airport | Szczecin | Poland |