| SAA | Shively Airport | Saratoga | US |
| SAB | J. Yrausquin Airport | Saba | BQ |
| SAC | Executive Airport | Sacramento | US |
| SAD | Safford Airport | Safford | US |
| SAE | Heliport | Saattut | GL |
| SAF | Santa Fe Airport | Santa Fe | US |
| SAG | Sagwon Airport | Sagwon | US |
| SAH | Sana'a International Airport | Sana'a | YE |
| SAI | Off-Line Point | San Marino | SM |
| SAJ | Bus Station | Salamanca | ES |
| SAK | Alexander Airport | Saudarkrokur | IS |
| SAL | Comalapa International Airport | San Salvador | SV |
| SAM | Salamo Airport | Salamo | PG |
| SAN | San Diego International Airport | San Diego | US |
| SAO | Metropolitan Area | Sao Paulo | BR |
| SAP | Ramon Villeda Morales Airport | San Pedro Sula | HN |
| SAQ | San Andros Airport | San Andros | BS |
| SAR | Sparta Community Airport | Sparta | US |
| SAS | Salton City Airport | Salton City | US |
| SAT | San Antonio International Airport | San Antonio | US |
| SAU | Tardamu Airport | Sawu | ID |
| SAV | Savannah/Hilton Head Airport | Savannah | US |
| SAW | Sabiha Gokcen Airport | Istanbul | TR |
| SAX | Sambu Airport | Sambu | PA |
| SAY | Ampugnano Airport | Siena | IT |
| SAZ | Sasstown Airport | Sasstown | LR |
| SBA | Santa Barbara Municipal Airport | Santa Barbara | US |
| SBB | Santa Barbara Ba Airport | Santa Barbara Ba | VE |
| SBC | Selbang Airport | Selbang | PG |
| SBD | Norton Air Force Base | San Bernardino | US |
| SBE | Suabi Airport | Suabi | PG |
| SBF | Sardeh Band Airport | Sardeh Band | AF |
| SBG | Maimun Saleh Airport | Sabang | ID |
| SBH | St Barthelemy Airport | St Barthelemy | BL |
| SBI | Sambailo Airport | Koundara | GN |
| SBJ | Sao Mateus Airport | Sao Mateus | BR |
| SBK | Tremuson Airport | Saint Brieuc | FR |
| SBL | Yacuma Airport | Santa Ana | BO |
| SBM | Sheboygan Memorial Airport | Sheboygan | US |
| SBN | South Bend Regional | South Bend | US |
| SBO | Salina Airport | Salina | US |
| SBP | County Airport | San Luis Obispo | US |
| SBQ | Sibi Airport | Sibi | PK |
| SBR | Saibai Island Airport | Saibai Island | AU |
| SBS | Steamboat Springs Airport | Steamboat Springs | US |
| SBT | Tri-City Airport | San Bernardino | US |
| SBU | Springbok Airport | Springbok | ZA |
| SBV | Sabah Airport | Sabah | PG |
| SBW | Sibu Airport | Sibu | MY |
| SBX | Shelby Airport | Shelby | US |
| SBY | Wicomico County Airport | Salisbury-Ocean City | US |
| SBZ | Sibiu Airport | Sibiu | RO |
| SCA | Santa Catalina Airport | Santa Catalina | CO |
| SCB | State Airport | Scribner | US |
| SCC | Prudhoe Bay/Deadhorse Airport | Prudhoe Bay/Deadhorse | US |
| SCD | Sulaco Airport | Sulaco | HN |
| SCE | University Park Airport | State College | US |
| SCF | Scottsdale Municipal Airport | Phoenix | US |
| SCG | Spring Creek Airport | Spring Creek | AU |
| SCH | County Airport | Schenectady | US |
| SCI | San Cristobal Airport | San Cristobal | VE |
| SCJ | Smith Cove Airport | Smith Cove | US |
| SCK | Stockton Airport | Sacramento | US |
| SCL | Arturo Merino Benitez Airport | Santiago | CL |
| SCM | Scammon Bay Sea Plane Base | Scammon Bay | US |
| SCN | Saarbruecken Airport | Saarbruecken | DE |
| SCO | Aktau Airport | Aktau | KZ |
| SCP | Saint Crepin Airport | Saint Crepin | FR |
| SCQ | Santiago De Compostela Airport | Santiago De Compostela | ES |
| SCR | Scranton Municipal Airport | Scranton | US |
| SCS | Scatsta Airport | Shetland Islands | GB |
| SCT | Socotra Airport | Socotra | YE |
| SCU | Antonio Maceo Airport | Santiago | CU |
| SCV | Salcea Airport | Suceava | RO |
| SCW | Syktyvkar Airport | Syktyvkar | RU |
| SCX | Salina Cruz Airport | Salina Cruz | MX |
| SCY | San Cristobal Airport | San Cristobal Island | EC |
| SCZ | Santa Cruz Island Airport | Santa Cruz Island | SB |
| SDB | Langebaanweg AFB | Saldanha Bay | ZA |
| SDC | Sandcreek Airport | Sandcreek | GY |
| SDD | Mukanka Airport | Lubango | AO |
| SDE | Santiago Del Estero Airport | Santiago Del Estero | AR |
| SDF | Standiford Field | Louisville | US |
| SDG | Sanandaj Airport | Sanandaj | IR |
| SDH | Santa Rosa De Copan Airport | Santa Rosa De Copan | HN |
| SDI | Saidor Airport | Saidor | PG |
| SDJ | Sendai Airport | Sendai | JP |
| SDK | Sandakan Airport | Sandakan | MY |
| SDL | Sundsvall/Harnosand Airport | Sundsvall | SE |
| SDM | Brown Field Municipal Airport | San Diego | US |
| SDN | Sandane Airport | Sandane | NO |
| SDP | Sand Point Municipal Airport | Sand Point | US |
| SDQ | Las Americas Airport | Santo Domingo | DO |
| SDR | Santander Airport | Santander | ES |
| SDS | Sado Airport | Sado | JP |
| SDT | Saidu Sharif Airport | Saidu Sharif | PK |
| SDU | Santos Dumont Airport | Rio De Janeiro | BR |
| SDV | Sde-Dov Airport | Tel Aviv-Yafo | IL |
| SDX | Sedona Airport | Sedona | US |
| SDY | Richland Municipal Airport | Sidney | US |
| SDZ | Metropolitan Area | Shetland Islands | GB |
| SEA | Seattle/Tacoma International Airport | Seattle | US |
| SEB | Sebha Airport | Sebha | LY |
| SEC | Off-Line Point | Serre Chevalier | FR |
| SED | Min'hat Hashnayim Airport | Sedom | IL |
| SEE | Gillespie Field | San Diego | US |
| SEF | Sebring Air Terminal | Sebring | US |
| SEG | Penn Valley Airport | Selinsgrove | US |
| SEH | Senggeh Airport | Senggeh | ID |
| SEI | Senhor Do Bonfim Airport | Senhor Do Bonfim | BR |
| SEJ | Railway Station | Salamanca | ES |
| SEK | Srednekolymsk Airport | Srednekolymsk | RU |
| SEL | Metropolitan Area | Seoul | KR |
| SEM | Craig Air Force Base | Selma | US |
| SEN | Southend Airport | London | GB |
| SEO | Seguela Airport | Seguela | CI |
| SEP | Clark Field | Stephenville | US |
| SEQ | Sei Pakning Airport | Bengkalis | ID |
| SER | Freeman Municipal Airport | Seymour | US |
| SES | Selfield Airport | Selma | US |
| SET | San Esteban Airport | San Esteban | HN |
| SEU | Seronera Airport | Seronera | TZ |
| SEV | Severodonetsk Airport | Severodonetsk | UA |
| SEW | Siwa Oasis North Airport | Siwa Oasis | EG |
| SEY | Selibabi Airport | Selibabi | MR |
| SEZ | Seychelles International Airport | Mahe Island | SC |
| SFA | Thyna Airport | Sfax | TN |
| SFB | Orlando Sanford Intl Airport | Orlando | US |
| SFC | St Francois Airport | St Francois | GP |
| SFD | Las Flecheras Airport | San Fernando De Apure | VE |
| SFE | San Fernando Airport | San Fernando | PH |
| SFF | Felts Field | Spokane | US |
| SFG | Esperance Airport | St Martin | MF |
| SFH | San Felipe Airport | San Felipe | MX |
| SFJ | Kangerlussuaq Airport | Kangerlussuaq | GL |
| SFK | Soure Airport | Soure | BR |
| SFL | Sao Filipe Airport | Sao Filipe | CV |
| SFM | Sanford Airport | Sanford | US |
| SFN | Santa Fe Airport | Santa Fe | AR |
| SFO | San Francisco International Airport | San Francisco | US |
| SFP | Surfers Paradise Heliport | Surfers Paradise | AU |
| SFQ | Sanliurfa Airport | Sanliurfa | TR |
| SFR | San Fernando Airport | San Fernando | US |
| SFS | Subic Bay International Airport | Subic Bay | PH |
| SFT | Skelleftea Airport | Skelleftea | SE |
| SFU | Safia Airport | Safia | PG |
| SFV | Santa Fe Do Sul Airport | Santa Fe Do Sul | BR |
| SFW | Santa Fe Airport | Santa Fe | PA |
| SFX | San Felix Airport | San Felix | VE |
| SFY | Metropolitan Area | Springfield | US |
| SFZ | North Central Airport | Smithfield | US |
| SGA | Sheghnan Airport | Sheghnan | AF |
| SGB | Singaua Airport | Singaua | PG |
| SGC | Surgut Airport | Surgut | RU |
| SGD | Sonderborg Airport | Sonderborg | DK |
| SGE | Siegerland Airport | Siegen | DE |
| SGF | Springfield-Branson Regional Airport | Springfield | US |
| SGG | Heliport | Sermiligaaq | GL |
| SGH | Springfield Airport | Springfield | US |
| SGI | Mushaf AFB | Sargodha | PK |
| SGJ | Sagarai Airport | Sagarai | PG |
| SGK | Sangapi Airport | Sangapi | PG |
| SGL | Danilo Atienza Air Base | Manila | PH |
| SGM | San Ignacio Airport | San Ignacio | MX |
| SGN | Tan Son Nhat Int'l Airport | Ho Chi Minh City | VN |
| SGO | St George Airport | St George | AU |
| SGP | Shay Gap Airport | Shay Gap | AU |
| SGQ | Sangkimah Airport | Sangata | ID |
| SGR | Sugar Land Municipal Airport | Houston | US |
| SGT | Stuttgart Airport | Stuttgart | US |
| SGU | Saint George Municipal Airport | Saint George | US |
| SGV | Sierra Grande Airport | Sierra Grande | AR |
| SGW | Saginaw Bay Airport | Saginaw Bay | US |
| SGX | Songea Airport | Songea | TZ |
| SGY | Skagway Municipal Airport | Skagway | US |
| SGZ | Songkhla Airport | Songkhla | TH |
| SHA | Hongqiao International Airport | Shanghai | CN |
| SHB | Nakashibetsu Airport | Nakashibetsu | JP |
| SHC | Shire Airport | Inda Selassie | ET |
| SHD | Shenandoah Valley Airport | Staunton | US |
| SHE | Taoxian International Airport | Shenyang | CN |
| SHG | Shungnak Airport | Shungnak | US |
| SHH | Shishmaref Airport | Shishmaref | US |
| SHI | Shimojishima Airport | Shimojishima | JP |
| SHJ | Sharjah Airport | Sharjah | AE |
| SHK | Sehonghong Airport | Sehonghong | LS |
| SHL | Barapani Airport | Shillong | IN |
| SHM | Nanki-Shirahama | Shirahama | JP |
| SHN | Sanderson Field | Shelton | US |
| SHO | Sikhupe International Airport | Manzini | SZ |
| SHP | Shanhaiguan Airport | Qinhuangdao | CN |
| SHQ | Southport Airport | Southport | AU |
| SHR | Sheridan Airport | Sheridan | US |
| SHS | Shashi Airport | Jingzhou | CN |
| SHT | Shepparton Airport | Shepparton | AU |
| SHU | Smith Point Airport | Smith Point | AU |
| SHV | Shreveport Regional Airport | Shreveport | US |
| SHW | Sharurah Airport | Sharurah | SA |
| SHX | Shageluk Airport | Shageluk | US |
| SHY | Ibadakuli Airport | Shinyanga | TZ |
| SHZ | Seshote Airport | Seshote | LS |
| SIA | Xiguan Airport | Xi'an | CN |
| SIB | Sibiti Airport | Sibiti | CG |
| SIC | San Jose Island Airport | San Jose Island | PA |
| SID | Amilcar Cabral International Airport | Sal Island | CV |
| SIE | Sines Airport | Sines | PT |
| SIF | Simara Airport | Simara | NP |
| SIG | Isla Grande Airport | San Juan | PR |
| SIH | Doti Airport | Dipayal Silgadhi | NP |
| SII | Sania Ramel Airport | Sidi Ifni | MA |
| SIJ | Siglufjordur Airport | Siglufjordur | IS |
| SIK | Sikeston Memorial Airport | Sikeston | US |
| SIL | Sila Airport | Sila | PG |
| SIM | Simbai Airport | Simbai | PG |
| SIN | Changi Airport | Singapore | SG |
| SIO | Smithton Airport | Smithton | AU |
| SIP | Simferopol International Airport | Simferopol | UA |
| SIQ | Dabo Airport | Singkep | ID |
| SIR | Sion Airport | Sion | CH |
| SIS | Sishen Airport | Sishen | ZA |
| SIT | Sitka Airport | Sitka | US |
| SIU | Siuna Airport | Siuna | NI |
| SIV | Sullivan County Airport | Sullivan | US |
| SIW | Sibisa Airport | Parapat | ID |
| SIX | Singleton Airport | Singleton | AU |
| SIY | Siskiyou County Airport | Montague | US |
| SIZ | Sissano Airport | Sissano | PG |
| SJA | San Juan Airport | San Juan | PE |
| SJB | San Joaquin Airport | San Joaquin | BO |
| SJC | Norman Y. Mineta International | San Jose | US |
| SJD | Los Cabos International Airport | San Jose Cabo | MX |
| SJE | San Jose Del Gua Airport | San Jose Del Gua | CO |
| SJF | St John Island Airport | St John Island | VI |
| SJG | San Pedro Jagua Airport | San Pedro Jagua | CO |
| SJH | San Juan Del Cesar Airport | San Juan Del Cesar | CO |
| SJI | San Jose Airport | San Jose | PH |
| SJJ | Butmir International Airport | Sarajevo | BA |
| SJK | Sao Jose dos Campos Airport | Sao Jose dos Campos | BR |
| SJL | Da Cachoeira Airport | Sao Gabriel | BR |
| SJM | San Juan Airport | San Juan | DO |
| SJN | St Johns Municipal | St Johns | US |
| SJO | Juan Santamaria International Airport | San Jose | CR |
| SJP | Sao Jose Do Rio Preto Airport | Sao Jose Do Rio Preto | BR |
| SJQ | Sesheke Airport | Sesheke | ZM |
| SJR | San Juan De Uraba Airport | San Juan De Uraba | CO |
| SJS | San Jose Airport | San Jose | BO |
| SJT | Mathis Field | San Angelo | US |
| SJU | Luis Munoz Marin International Airport | San Juan | PR |
| SJV | San Javier Airport | San Javier | BO |
| SJW | Zhengding International Airport | Shijiazhuang | CN |
| SJX | Sartaneja Airport | Sartaneja | BZ |
| SJY | Ilmajoki Airport | Seinajoki | FI |
| SJZ | Sao Jorge Island Airport | Sao Jorge Island | PT |
| SKA | Fairchild Air Force Base | Spokane | US |
| SKB | Golden Rock Airport | St Kitts | KN |
| SKC | Suki Airport | Suki | PG |
| SKD | Samarkand International Airport | Samarkand | UZ |
| SKE | Skien Airport | Skien | NO |
| SKF | Kelly Air Force Base | San Antonio | US |
| SKG | Makedonia Airport | Thessaloniki | GR |
| SKH | Surkhet Airport | Surkhet | NP |
| SKI | Skikda Airport | Skikda | DZ |
| SKJ | Sitkinak Island Coast Guard Station | Sitkinak Island | US |
| SKK | Shaktoolik Airport | Shaktoolik | US |
| SKL | Broadford Airport | Skye | GB |
| SKM | Skeldon Airport | Skeldon | GY |
| SKN | Skagen Airport | Stokmarknes | NO |
| SKO | Sadiq Abubakar III Int'l Airport | Sokoto | NG |
| SKP | Skopje Airport | Skopje | MK |
| SKQ | Sekake Airport | Sekake | LS |
| SKR | Shakiso Airport | Shakiso | ET |
| SKS | Vojens Airport | Vojens | DK |
| SKT | Sialkot International Airport | Sialkot | PK |
| SKU | Skyros Airport | Skyros | GR |
| SKV | St Catherine International Airport | St Catherine | EG |
| SKW | Skwentna Intermediate Airport | Skwentna | US |
| SKX | Saransk Airport | Saransk | RU |
| SKY | Griffin Sandusky Airport | Sandusky | US |
| SKZ | Sukkur Airport | Sukkur | PK |
| SLA | General Martin M de Guemes | Salta | AR |
| SLB | Storm Lake Municipal Airport | Storm Lake | US |
| SLC | Salt Lake City International Airport | Salt Lake City | US |
| SLD | Sliac Airport | Sliac | SK |
| SLE | McNary Field | Salem | US |
| SLF | Sulayel Airport | Sulayel | SA |
| SLG | Smith Field | Siloam Springs | US |
| SLH | Vanua Lava Airport | Sola | VU |
| SLI | Solwezi Airport | Solwezi | ZM |
| SLJ | Solomon Airport | Solomon | AU |
| SLK | Adirondack Airport | Saranac Lake | US |
| SLL | Salalah Airport | Salalah | OM |
| SLM | Salamanca Airport | Salamanca | ES |
| SLN | Salina Airport | Salina | US |
| SLO | Leckrone Airport | Salem | US |
| SLP | San Luis Potosi Airport | San Luis Potosi | MX |
| SLQ | Sleetmute Airport | Sleetmute | US |
| SLR | Sulphur Springs Airport | Sulphur Springs | US |
| SLS | Polkovnik-Lambrinovo Airport | Silistra | BG |
| SLT | Salida Airport | Salida | US |
| SLU | George F.L. Charles Airport | St Lucia | LC |
| SLV | Shimla Airport | Shimla | IN |
| SLW | Saltillo Airport | Saltillo | MX |
| SLX | Salt Cay Airport | Salt Cay | TC |
| SLY | Salehard Airport | Salekhard | RU |
| SLZ | Mal. Cunha Machado Airport | Sao Luis | BR |
| SMA | Vila Do Porto Airport | Santa Maria (Azores) | PT |
| SMB | Cerro Sombrero Airport | Cerro Sombrero | CL |
| SMC | Santa Maria Airport | Santa Maria | CO |
| SMD | Smith Field | Fort Wayne | US |
| SME | Pulaski County Airport | Somerset | US |
| SMF | Sacramento International Airport | Sacramento | US |
| SMG | Santa Maria Airport | Santa Maria | PE |
| SMH | Sapmanga Airport | Sapmanga | PG |
| SMI | Aristarchos of Samos Airport | Samos | GR |
| SMJ | Sim Airport | Sim | PG |
| SMK | St Michael Airport | St Michael | US |
| SML | Estate Airstrip | Stella Maris | BS |
| SMM | Semporna Airport | Semporna | MY |
| SMN | Salmon Airport | Salmon | US |
| SMO | Santa Monica Airport | Santa Monica | US |
| SMP | Stockholm Airport | Stockholm | PG |
| SMQ | H. Asan Airport | Sampit | ID |
| SMR | Simon Bolivar Airport | Santa Marta | CO |
| SMS | Sainte-Marie Airport | Sainte-Marie | MG |
| SMU | Sheep Mountain Airport | Sheep Mountain | US |
| SMV | Engadin Airport | St Moritz | CH |
| SMW | Smara Airport | Smara | MA |
| SMX | Santa Maria Public Airport | Santa Maria | US |
| SMY | Simenti Airport | Simenti | SN |
| SMZ | Stoelmanseiland Airport | Stoelmanseiland | SR |
| SNA | John Wayne Airport | Santa Ana | US |
| SNB | Snake Bay Airport | Milikapiti | AU |
| SNC | Salinas Airport | Salinas | EC |
| SNE | Preguica Airport | Sao Nicolau Island | CV |
| SNF | San Felipe Airport | San Felipe | VE |
| SNG | San Ignacio De Velasco Airport | San Ignacio De Velasco | BO |
| SNH | Stanthorpe Airport | Stanthorpe | AU |
| SNI | R. E. Murray Airport | Sinoe | LR |
| SNJ | San Julian Airport | San Julian | CU |
| SNK | Winston Field | Snyder | US |
| SNL | Shawnee Municipal Airport | Shawnee | US |
| SNM | San Ignacio De Moxos Airport | San Ignacio De Moxos | BO |
| SNN | Shannon International Airport | Shannon | IE |
| SNO | Sakon Nakhon Airport | Sakon Nakhon | TH |
| SNP | Saint Paul Island Airport | Saint Paul Island | US |
| SNQ | San Quintin Airport | San Quintin | MX |
| SNR | Montoir Airport | Saint Nazaire | FR |
| SNS | Salinas Airport | Salinas | US |
| SNT | Sabana De Torres Airport | Sabana De Torres | CO |
| SNU | Santa Clara Airport | Santa Clara | CU |
| SNV | Santa Elena Airport | Santa Elena | VE |
| SNW | Thandwe Airport | Thandwe | MM |
| SNX | Sabana De Mar Airport | Sabana De Mar | DO |
| SNY | Sidney Airport | Sidney | US |
| SNZ | Santa Cruz Airport | Santa Cruz | BR |
| SOA | Soc Trang Airport | Soc Trang | VN |
| SOB | Balaton Airport | Heviz | HU |
| SOC | Adi Sumarmo Airport | Surakarta (Solo) | ID |
| SOD | Sorocaba Airport | Sorocaba | BR |
| SOE | Souanke Airport | Souanke | CG |
| SOF | Sofia Airport | Sofia | BG |
| SOG | Haukasen Airport | Sogndal | NO |
| SOH | Solita Airport | Solita | CO |
| SOI | South Molle Island Heliport | South Molle Island | AU |
| SOJ | Sorkjosen Airport | Sorkjosen | NO |
| SOK | Semongkong Airport | Semongkong | LS |
| SOL | Solomon Airport | Solomon | US |
| SOM | El Tigre Airport | San Tome | VE |
| SON | Santo-Pekoa International Airport | Luganville | VU |
| SOO | Soderhamn Airport | Soderhamn | SE |
| SOP | Pinehurst-S. Pines Airport | Southern Pines | US |
| SOQ | Domine Eduard Osok Airport | Sorong | ID |
| SOR | Al Thaurah Airport | Al Thaurah | SY |
| SOT | Sodankyla Airport | Sodankyla | FI |
| SOU | Eastleigh Airport | Southampton | GB |
| SOV | Seldovia Airport | Seldovia | US |
| SOW | Show Low Airport | Show Low | US |
| SOX | Sogamoso Airport | Sogamoso | CO |
| SOY | Stronsay Airport | Stronsay | GB |
| SOZ | Solenzara Airport | Solenzara | FR |
| SPA | Spartanburg Downtown Memorial Airport | Spartanburg | US |
| SPB | Sea Plane Base | St Thomas Island | VI |
| SPC | La Palma | Santa Cruz De La Palma | ES |
| SPD | Saidpur Airport | Saidpur | BD |
| SPE | Sepulot Airport | Sepulot | MY |
| SPF | Black Hills Airport | Spearfish | US |
| SPG | Whitted Airport | St Petersburg | US |
| SPH | Sopu Airport | Sopu | PG |
| SPI | Capital Airport | Springfield | US |
| SPJ | Sparta Airport | Sparta | GR |
| SPK | Metropolitan Area | Sapporo | JP |
| SPL | Schiphol Railway Service | Amsterdam | NL |
| SPM | Spangdahlem Air Base | Spangdahlem | DE |
| SPN | Francisco C. Ada International | Saipan | MP |
| SPO | Railway Station | San Pablo | ES |
| SPP | Menongue Airport | Menongue | AO |
| SPQ | Catalina Sea Plane Base | San Pedro | US |
| SPR | San Pedro Airport | San Pedro | BZ |
| SPS | Sheppard Air Force Base | Wichita Falls | US |
| SPT | Sipitang Airport | Sipitang | MY |
| SPU | Split Airport | Split | HR |
| SPV | Sepik Plains Airport | Sepik Plains | PG |
| SPW | Spencer Municipal Airport | Spencer | US |
| SPX | Spaceland Airport | Houston | US |
| SPY | San Pedro Airport | San Pedro | CI |
| SPZ | Springdale Municipal Airport | Springdale | US |
| SQA | Santa Ynez Airport | Santa Ynez | US |
| SQB | Santa Ana Airport | Santa Ana | CO |
| SQC | Southern Cross Airport | Southern Cross | AU |
| SQE | San Luis De Pale Airport | San Luis De Pale | CO |
| SQF | Solano Airport | Solano | CO |
| SQG | Susilo Airport | Sintang | ID |
| SQH | Na San Airport | Son La | VN |
| SQI | Whiteside County Airport | Sterling | US |
| SQK | Sidi Barrani Airport | Sidi Barrani | EG |
| SQL | San Carlos Airport | San Carlos | US |
| SQM | Sao Miguel Araguaia Airport | Sao Miguel Araguaia | BR |
| SQN | Emalamo Airport | Sanana | ID |
| SQO | Gunnarn Airport | Storuman | SE |
| SQQ | Siauliai International Airport | Siauliai | LT |
| SQR | Soroako Airport | Soroako | ID |
| SQS | Matthew Spain Airport | San Ignacio | BZ |
| SQT | China Straits Airstrip | Samarai Island | PG |
| SQU | Saposoa Airport | Saposoa | PE |
| SQV | Sequim Valley Airport | Sequim | US |
| SQW | Skive Airport | Skive | DK |
| SQX | Sao Miguel Do Oeste Airport | Sao Miguel Do Oeste | BR |
| SQY | Sao Lourenco Do Sul Airport | Sao Lourenco Do Sul | BR |
| SQZ | Royal Air Force Station | Scampton | GB |
| SRA | Santa Rosa Airport | Santa Rosa | BR |
| SRB | Santa Rosa Airport | Santa Rosa | BO |
| SRC | Searcy Airport | Searcy | US |
| SRD | San Ramon Airport | San Ramon | BO |
| SRE | Sucre Airport | Sucre | BO |
| SRF | Hamilton Field | San Rafael | US |
| SRG | Ahmad Yani Airport | Semarang | ID |
| SRH | Sarh Airport | Sarh | TD |
| SRI | Temindung Airport | Samarinda | ID |
| SRJ | Capitan G Q Guardia Airport | San Borja | BO |
| SRK | Heliport | Siorapaluk | GL |
| SRL | Santa Rosalia Airport | Santa Rosalia | MX |
| SRM | Sandringham Station Airport | Sandringham Station | AU |
| SRN | Strahan Airport | Strahan | AU |
| SRO | Santana Ramos Airport | Santana Ramos | CO |
| SRP | Stord Airport | Stord | NO |
| SRQ | Bradenton Airport | Sarasota | US |
| SRR | Dunwich Airport | Stradbroke Island | AU |
| SRS | San Marcos Airport | San Marcos | CO |
| SRT | Soroti Airport | Soroti | UG |
| SRU | Santa Cruz Skypark | Santa Cruz | US |
| SRV | Stony River Airport | Stony River | US |
| SRW | Rowan County Airport | Salisbury | US |
| SRX | Gardabya Airport | Sirte | LY |
| SRY | Dasht-e-Naz Airport | Sari | IR |
| SRZ | El Trompillo Airport | Santa Cruz | BO |
| SSA | Airport Luis E. Magalhaes | Salvador | BR |
| SSB | Sea Plane Base | St Croix Island | VI |
| SSC | Shaw Air Force Base | Sumter | US |
| SSD | San Felipe Airport | San Felipe | CO |
| SSE | Solapur Airport | Solapur | IN |
| SSF | Stinson Municipal Airport | San Antonio | US |
| SSG | Santa Isabel International | Malabo | GQ |
| SSH | Sharm el-Sheikh International Airport | Sharm el-Sheikh | EG |
| SSI | McKinnon Airport | Brunswick | US |
| SSJ | Stokka Airport | Sandnessjoen | NO |
| SSK | Sturt Creek Airport | Sturt Creek | AU |
| SSL | Santa Rosalia Airport | Santa Rosalia | CO |
| SSM | Metropolitan Area | Sault Ste. Marie | US |
| SSN | Air Base | Seoul | KR |
| SSO | Sao Lourenzo Airport | Sao Lourenzo | BR |
| SSP | Silver Planes Airport | Silver Planes | AU |
| SSQ | La Sarre Airport | La Sarre | CA |
| SSR | Sara Airport | Sara | VU |
| SSS | Siassi Airport | Siassi | PG |
| SST | Santa Teresita Airport | Santa Teresita | AR |
| SSU | Greenbrier Airport | White Sulphur Springs | US |
| SSV | Siasi Airport | Siasi | PH |
| SSW | Stuart Island Airport | Stuart Island | US |
| SSY | M'Banza Congo Airport | M'Banza Congo | AO |
| SSZ | Santos Airport | Santos | BR |
| STA | Stauning Airport | Stauning | DK |
| STB | L Delicias Airport | Santa Barbara Ed | VE |
| STC | Saint Cloud Municipal Airport | Saint Cloud | US |
| STD | Mayo Guerrero Airport | Santo Domingo | VE |
| STE | Stevens Point Airport | Stevens Point | US |
| STF | Stephens Island Airport | Stephens Island | AU |
| STG | St George Island Airport | St George Island | US |
| STH | Strathmore Airport | Strathmore | AU |
| STI | Santiago Municipal Airport | Santiago | DO |
| STJ | Rosecrans Memorial Airport | St Joseph | US |
| STK | Crosson Field | Sterling | US |
| STL | Lambert-St Louis Int'l Airport | St Louis | US |
| STM | Maestro Wilson Fonseca Airport | Santarem | BR |
| STN | Stansted Airport | London | GB |
| STO | Metropolitan Area | Stockholm | SE |
| STP | Downtown Airport | St Paul | US |
| STQ | St Marys Airport | St Marys | US |
| STR | Stuttgart Airport | Stuttgart | DE |
| STS | Sonoma County Airport | Santa Rosa | US |
| STT | Cyril E. King Airport | St Thomas Island | VI |
| STU | Santa Cruz Airport | Santa Cruz | BZ |
| STV | Surat Gujarat Airport | Surat Gujarat | IN |
| STW | Shpakovskoye Airport | Stavropol | RU |
| STX | Alex Hamilton Airport | St Croix Island | VI |
| STY | Salto Airport | Salto | UY |
| STZ | Confresa Airport | Santa Teresinha | BR |
| SUA | Witham Field | Stuart | US |
| SUB | Juanda Airport | Surabaya | ID |
| SUC | Schloredt Airport | Sundance | US |
| SUD | Stroud Airport | Stroud | US |
| SUE | Door County Airport | Sturgeon Bay | US |
| SUF | Lamezia Terme Airport | Lamezia Terme | IT |
| SUG | Surigao Airport | Surigao | PH |
| SUH | Sur Airport | Sur | OM |
| SUI | Babusheri Airport | Sukhumi | GE |
| SUJ | Satu Mare Airport | Satu Mare | RO |
| SUK | Sakkyryr Airport | Sakkyryr | RU |
| SUL | Sui Airport | Sui | PK |
| SUM | Sumter Municipal Airport | Sumter | US |
| SUN | Sun Valley Airport | Sun Valley | US |
| SUO | Sun River Airport | Sun River | US |
| SUP | Trunojoyo Airport | Sumenep | ID |
| SUQ | Sucua Airport | Sucua | EC |
| SUR | Summer Beaver Airport | Summer Beaver | CA |
| SUS | Spirit Of St Louis Airport | St Louis | US |
| SUT | Sumbawanga Airport | Sumbawanga | TZ |
| SUU | Travis Air Force Base | Fairfield | US |
| SUV | Nausori International Airport | Suva | FJ |
| SUW | Richard I Bong Airport | Superior | US |
| SUX | Sioux Gateway Airport | Sioux City | US |
| SUY | Suntar Airport | Suntar | RU |
| SUZ | Suria Airport | Suria | PG |
| SVA | Savoonga Airport | Savoonga | US |
| SVB | Sambava Airport | Sambava | MG |
| SVC | Grant County Airport | Silver City | US |
| SVD | E. T. Joshua Airport | St Vincent | VC |
| SVE | Susanville Airport | Susanville | US |
| SVF | Save Airport | Save | BJ |
| SVG | Sola Airport | Stavanger | NO |
| SVH | Statesville Municipal Airport | Statesville | US |
| SVI | San Vicente Airport | San Vicente | CO |
| SVJ | Helle Airport | Svolvaer | NO |
| SVK | Silver Creek Airport | Silver Creek | BZ |
| SVL | Savonlinna Airport | Savonlinna | FI |
| SVM | St Pauls Airport | St Pauls | AU |
| SVN | Hunter Air Force Base | Savannah | US |
| SVO | Sheremetyevo Airport | Moscow | RU |
| SVP | Kuito Airport | Kuito | AO |
| SVQ | Sevilla Airport | Sevilla | ES |
| SVR | Heliport | Savissivik | GL |
| SVS | Stevens Village Airport | Stevens Village | US |
| SVT | Savuti Airport | Savuti | BW |
| SVU | Savusavu Airport | Savusavu | FJ |
| SVV | San Salvador De Airport | San Salvador De | VE |
| SVW | Sparrevohn Air Force Station | Sparrevohn | US |
| SVX | Koltsovo Airport | Yekaterinburg | RU |
| SVY | Savo Island Airport | Savo Island | SB |
| SVZ | San Antonio Airport | San Antonio | VE |
| SWA | Jieyang Chaoshan Airport | Shantou | CN |
| SWB | Shaw River Airport | Shaw River | AU |
| SWC | Stawell Airport | Stawell | AU |
| SWD | Seward Airport | Seward | US |
| SWE | Siwea Airport | Siwea | PG |
| SWF | Stewart Airport | Newburgh | US |
| SWG | Satwag Airport | Satwag | PG |
| SWH | Swan Hill Airport | Swan Hill | AU |
| SWJ | South West Bay Airport | South West Bay | VU |
| SWK | Off-Line Point | Segrate | IT |
| SWL | Spanish Wells Airport | Spanish Wells | BS |
| SWM | Suia-Missu Airport | Suia-Missu | BR |
| SWN | Sahiwal Airport | Sahiwal | PK |
| SWO | Searcy Field | Stillwater | US |
| SWP | Swakopmund Airport | Swakopmund | NA |
| SWQ | Brangbiji Airport | Sumbawa Besar | ID |
| SWR | Silur Airport | Silur | PG |
| SWS | Fairwood Comm Airport | Swansea | GB |
| SWT | Strezhevoy Airport | Strezhevoy | RU |
| SWU | Air Base | Suwon | KR |
| SWV | Severo-Evensk Airport | Evensk | RU |
| SWW | Sweetwater Airport | Sweetwater | US |
| SWX | Shakawe Airport | Shakawe | BW |
| SWY | Sitiawan Airport | Sitiawan | MY |
| SXA | Sialum Airport | Sialum | PG |
| SXB | Entzheim Airport | Strasbourg | FR |
| SXC | Avalon Vor/WP Airport | Catalina Island | US |
| SXD | Off-Line Point | Sophia Antipolis | FR |
| SXE | West Sale Airport | Sale | AU |
| SXF | Schoenefeld Airport | Berlin | DE |
| SXG | Senanga Airport | Senanga | ZM |
| SXH | Sehulea Airport | Sehulea | PG |
| SXI | Sirri Island Airport | Sirri Island | IR |
| SXJ | Shanshan Airport | Shanshan | CN |
| SXK | Olilit Airport | Saumlaki | ID |
| SXL | Sligo Airport | Sligo | IE |
| SXM | Princ. Juliana Airport | St Maarten | SX |
| SXN | Sua Pan Airport | Sua Pan | BW |
| SXO | Sao Felix Do Araguaia Airport | Sao Felix Do Araguaia | BR |
| SXP | Sheldon Sea Plane Base | Sheldon Point | US |
| SXQ | Soldotna Airport | Soldotna | US |
| SXR | Sheikh ul Alam Airport | Srinagar | IN |
| SXS | Sahabat Airport | Sahabat | MY |
| SXT | Sungai Tiang Airport | Taman Negara | MY |
| SXU | Sodo Airport | Sodo | ET |
| SXV | Salem Airport | Salem | IN |
| SXW | Sauren Airport | Sauren | PG |
| SXX | Sao Felix Do Xingu Airport | Sao Felix Do Xingu | BR |
| SXY | Sidney Airport | Sidney | US |
| SXZ | Siirt Airport | Siirt | TR |
| SYA | Shemya Air Force Base | Shemya | US |
| SYB | Seal Bay Airport | Seal Bay | US |
| SYC | Shiringayoc Airport | Shiringayoc | PE |
| SYD | Kingsford Smith Airport | Sydney | AU |
| SYE | Sadah Airport | Sadah | YE |
| SYF | Silva Bay Airport | Silva Bay | CA |
| SYG | Spitsberg Airport | Svalbard | NO |
| SYH | Syangboche Airport | Syangboche | NP |
| SYI | Bomar Field | Shelbyville | US |
| SYJ | Sirjan Airport | Sirjan | IR |
| SYK | Stykkisholmur Airport | Stykkisholmur | IS |
| SYL | Roberts Air Force Base | San Miguel | US |
| SYM | Simao Airport | Simao | CN |
| SYN | Carleton Airport | Stanton | US |
| SYO | Shonai Airport | Shonai | JP |
| SYP | Santiago Airport | Santiago | PA |
| SYQ | Tobias Bolanos International Airport | San Jose | CR |
| SYR | Hancock International Airport | Syracuse | US |
| SYS | Saskylakh Airport | Saskylakh | RU |
| SYT | Charolais Bourgogne Sud Airport | Saint Yan | FR |
| SYU | Warraber Island Airport | Warraber Island | AU |
| SYV | Sylvester Airport | Sylvester | US |
| SYW | Sehwan Sharif Airport | Sehwan Sharif | PK |
| SYX | Phoenix International Airport | Sanya | CN |
| SYY | Stornoway Airport | Stornoway, Outer Stat Hebrides | GB |
| SYZ | Shahid Dastghaib International | Shiraz | IR |
| SZA | Soyo Airport | Soyo | AO |
| SZB | Sultan Abdul Aziz Shah Airport | Kuala Lumpur | MY |
| SZC | Guanacaste Airport | Santa Cruz | CR |
| SZE | Semera Airport | Semera | ET |
| SZF | Carsamba Airport | Samsun | TR |
| SZG | W. A. Mozart Airport | Salzburg | AT |
| SZI | Zaysan Airport | Zaysan | KZ |
| SZJ | Siguanea Airport | Siguanea | CU |
| SZK | Skukuza Airport | Skukuza | ZA |
| SZL | Whiteman Air Force Base | Warrensburg | US |
| SZM | Sesriem Airport | Sesriem | NA |
| SZN | Santa Cruz Island Airport | Santa Barbara | US |
| SZP | Santa Paula Airport | Santa Paula | US |
| SZQ | Saenz Pena Airport | Saenz Pena | AR |
| SZR | Kolyu Ganchevo Airport | Stara Zagora | BG |
| SZS | Stewart Island Airport | Stewart Island | NZ |
| SZT | San Cristobal de las Casas Airport | San Cristobal de las Casas | MX |
| SZU | Segou Airport | Segou | ML |
| SZV | Guangfu Airport | Suzhou | CN |
| SZW | Parchim Airport | Schwerin | DE |
| SZX | Bao'an International Airport | Shenzhen | CN |
| SZY | Mazury Airport | Szymany | PL |
| SZZ | Goleniow Airport | Szczecin | PL |