| RBK | - | French Valley Airport | Murrieta | |
| FRD | KFHR | Friday Harbor Airport | Friday Harbor | |
| FBS | - | Friday Harbor SPB | Friday Harbor | |
| SUN | KSUN | Friedman Memorial Airport | Sun Valley | |
| FRR | KFRR | Front Royal-Warren County Airport | Front Royal | |
| FUL | KFUL | Fullerton Municipal Airport | Fullerton | |
| GNV | KGNV | Gainesville Regional Airport | Gainesville | |
| GUP | KGUP | Gallup Municipal Airport | Gallup | |
| GAM | PAGM | Gambell Airport | Gambell | |
| GCK | KGCK | Garden City Municipal Airport | Garden City | |
| RIL | KRIL | Garfield County Airport | Rifle | |
| UVA | KUVA | Garner Field | Uvalde | |
| GYY | KGYY | Gary/Chicago International Airport | Gary | |
| GLR | KGLR | Gaylord Regional Airport | Gaylord | |
| LAR | KLAR | General Brees Field | Laramie | |
| WJF | KWJF | General William J Fox Airfield | Lancaster | |
| GGE | KGGE | Georgetown Airport | Georgetown | |
| - | KGTU | Georgetown Municipal | Georgetown | |
| - | - | Georgetown-Scott County Regional Airport | Georgetown | |
| - | - | Gillespie County Airport | Fredericksburg | |
| SEE | KSEE | Gillespie Field | San Diego | |
| FCA | KGPI | Glacier Park International Airport | Kalispell | |
| GGW | KGGW | Glasgow International Airport | Glasgow | |
| WLW | KWLW | Glenn County Airport | Willows | |
| BQK | KBQK | Glynco Jetport | Brunswick | |
| IWD | KIWD | Gogebic County Airport | Ironwood | |
| GTR | KGTR | Golden Triangle Regional Airport | Columbus | |
| GLV | - | Golovin Airport | Golovin | |
| GLD | KGLD | Goodland Municipal Airport | Goodland | |
| GNU | - | Goodnews Bay Airport | Goodnews Bay | |
| GRN | KGRN | Gordon Airport | Gordon | |
| GSH | KGSH | Goshen Municipal Airport | Goshen | |
| - | KGNB | Granby-Grand Co | Granby | |
| JGC | - | Grand Canyon Heliport | Grand Canyon | |
| GCN | KGCN | Grand Canyon National Park Airport | Grand Canyon | |
| GCW | - | Grand Canyon West Airport | Peach Springs | |
| OSB | - | Grand Glaize Airport | Osage Beach | |
| GRI | KGRI | Grand Island Airport | Grand Island | |
| GPZ | KGPZ | Grand Rapids - Itsaca County Airport | Grand Rapids | |
| CRE | KCRE | Grand Strand Airport | Myrtle Beach | |
| SVC | KSVC | Grant County Airport | Silver City | |
| MWH | KMWH | Grant County International Airport | Moses Lake | |
| GTP | - | Grants Pass Airport | Grants Pass | |
| GRF | KGRF | Gray Army Air Field | Tacoma | |
| KGX | - | Grayling Airport | Grayling | |
| GBD | KGBD | Great Bend Airport | Great Bend | |
| GTF | KGTF | Great Falls International Airport | Great Falls | |
| BGM | KBGM | Greater Binghamton Airport | Binghamton | |
| GXY | KGXY | Greeley-Weld County Airport | Greeley | |
| LWB | KLWB | Greenbrier Valley Airport | Lewisburg | |