| WBB | - | Stebbins Airport | Stebbins | |
| OFK | KOFK | Stefan Field | Norfolk | |
| - | KHSA | Stennis International Airport | Bay St. Louis | |
| STK | KSTK | Sterling Municipal Airport | Sterling | |
| STE | KSTE | Stevens Point Municipal Airport | Stevens Point | |
| SVS | - | Stevens Village Airport | Stevens Village | |
| SWF | KSWF | Stewart International Airport | Newburgh | |
| SCK | KSCK | Stockton Airport | Stockton | |
| SRV | - | Stony River Airport | Stony River | |
| SSW | - | Stuart Island Airport | Stuart Island | |
| SGR | KSGR | Sugar Land Municipal Airport | Houston | |
| SLR | KSLR | Sulphur Springs Airport | Sulphur Springs | |
| SUO | - | Sunriver Airport | Sunriver | |
| GED | KGED | Sussex County Airport | Georgetown | |
| TIW | KTIW | Tacoma Narrows Airport | Tacoma | |
| TCT | - | Takotna Airport | Takotna | |
| ASN | KASN | Talladega Municipal Airport | Talladega | |
| VDF | KVDF | Tampa Executive Airport | Tampa | |
| TLJ | - | Tatalina Air Force Station | Tatalina | |
| TEK | - | Tatitlek Airport | Tatitlek | |
| TLA | - | Teller Airport | Teller | |
| TEX | KTEX | Telluride Regional Airport | Telluride | |
| TKE | - | Tenakee Springs Sea Plane Base | Tenakee Springs | |
| TRL | KTRL | Terrell Municipal Airport | Terrell | |
| TXK | KTXK | Texarkana Regional Airport - Webb Field | Texarkana | |
| - | - | The Albertville Mun-Brumlik | Albertville | |
| MTH | KMTH | The Florida Keys Marathon Airport | Marathon | |
| TVF | KTVF | Thief River Falls Regional Airport | Thief River Falls | |
| TVI | KTVI | Thomasville Regional Airport | Thomasville | |
| KTB | - | Thorne Bay Sea Plane Base | Thorne Bay | |
| OTK | KTMK | Tillamook Airport | Tillamook | |
| TNC | PATC | Tin City Air Force Station | Tin City | |
| TIK | KTIK | Tinker Air Force Base | Oklahoma City | |
| FME | KFME | Tipton Airport | Fort Meade | |
| TOG | PATG | Togiak Village Airport | Togiak Village | |
| TKJ | PATJ | Tok Airport | Tok | |
| OOK | - | Toksook Bay Airport | Toksook Bay | |
| TDZ | KTDZ | Toledo Executive Airport | Toledo | |
| TOL | KTOL | Toledo Express Airport | Toledo | |
| XSD | KTNX | Tonopah Test Range Airport | Tonopah | |
| SUU | KSUU | Travis Air Force Base | Fairfield | |
| TTN | KTTN | Trenton-Mercer Airport | Trenton | |
| LNR | KLNR | Tri County Regional Airport | Lone Rock | |
| PSC | KPSC | Tri-Cities Airport | Pasco | |
| TRI | KTRI | Tri-Cities Regional Airport | Bristol, VA/Johnson City/Kingsport | |
| HTS | KHTS | Tri-State/Milton Airport | Huntington | |
| TTD | KTTD | Troutdale Airport | Troutdale | |
| TKF | KTRK | Truckee Tahoe Airport | Truckee | |
| CNW | KCNW | TSTC Waco Airport | Waco | |
| TLT | - | Tuluksak Airport | Tuluksak | |