| RHV | KRHV | Reid-Hillview Airport of Santa Clara County | - | |
|
| RNT | KRNT | Renton Municipal Airport | Renton | |
|
| ORV | PFNO | Robert (Bob) Curtis Memorial Airport | Noorvik | |
|
| RKH | KUZA | Rock Hill - York County Airport | Rock Hill | |
|
| HTL | KHTL | Roscommon County - Blodgett Memorial Airport | Houghton | |
|
| RSH | PARS | Russian Mission Airport | Russian Mission | |
|
| SAD | KSAD | Safford Regional Airport | Safford | |
|
| SQL | KSQL | San Carlos Airport | San Carlos | |
|
| SHN | KSHN | Sanderson Field | Shelton | |
|
| SMO | KSMO | Santa Monica Municipal Airport | Santa Monica | |
|
| SEF | KSEF | Sebring Regional Airport | Sebring | |
|
| SDX | KSEZ | Sedona Airport | Sedona | |
|
| SHX | PAHX | Shageluk Airport | Shageluk | |
|
| SKK | PFSH | Shaktoolik Airport | Shaktoolik | |
|
| SBM | KSBM | Sheboygan County Memorial Airport | Sheboygan | |
|
| SHD | KSHD | Shenandoah Valley Regional Airport | Staunton | |
|
| FLV | KFLV | Sherman Army Air Field | Fort Leavenworth | |
|
| SOW | KSOW | Show Low Regional Airport | Show Low | |
|
| SHG | PAGH | Shungnak Airport | Shungnak | |
|
| SRR | KSRR | Sierra Blanca Regional Airport | - | |
|
| SIK | KSIK | Sikeston Memorial Municipal Airport | Sikeston | |
|
| SPZ | KSPZ | Silver Springs Airport | Springdale | |
|
| SGY | PAGY | Skagway Airport | Skagway | |
|
| SLQ | PASL | Sleetmute Airport | Sleetmute | |
|
| SMD | KSMD | Smith Field | - | |
|
| SOA | KSOA | Sonora Municipal Airport | - | |
|
| LWA | KLWA | South Haven Area Regional Airport | - | |
|
| WSN | PFWS | South Naknek Nr 2 Airport | South Naknek | |
|
| VCV | KVCV | Southern California Logistics Airport | Victorville | |
|
| JVL | KJVL | Southern Wisconsin Regional Airport | Janesville | |
|
| SPW | KSPW | Spencer Municipal Airport | Spencer | |
|
| PHN | KPHN | St Clair County International Airport | Port Huron | |
|
| SMK | PAMK | St Michael Airport | Saint Michael | |
|
| SVH | KSVH | Statesville Regional Airport | Statesville | |
|
| SBS | KSBS | Steamboat Springs Bob Adams Field | Steamboat Springs | |
|
| BKD | KBKD | Stephens County Airport | Breckenridge | |
|
| STK | KSTK | Sterling Municipal Airport | Sterling | |
|
| STE | KSTE | Stevens Point Municipal Airport | Stevens Point | |
|
| GED | KGED | Sussex County Airport | Georgetown | |
|
| ASN | KASN | Talladega Municipal Airport | Talladega | |
|
| TAN | KTAN | Taunton Municipal King Field | - | |
|
| TLA | PATE | Teller Airport | Teller | |
|
| TEX | KTEX | Telluride Regional Airport | Telluride | |
|
| TVF | KTVF | Thief River Falls Regional Airport | Thief River Falls | |
|
| ALX | KALX | Thomas C Russell Field | Alexander City | |
|
| TVI | KTVI | Thomasville Regional Airport | Thomasville | |
|
| TNC | PATC | Tin City Long Range Radar Station Airport | Tin City | |
|
| TOC | KTOC | Toccoa Airport - R.G. Letourneau Field | Toccoa | |
|
| TKJ | PFTO | Tok Junction Airport | Tok | |
|
| OOK | PAOO | Toksook Bay Airport | Toksook Bay | |
|