| - | - | Greenbush Municipal | Greenbush | |
| - | - | Greene | Greene | |
| - | - | Greene Co-Jackson Regional | Dayton | |
| GCY | KGCY | Greene County Municipal Airport | Greeneville | |
| - | KGFZ | Greenfield Municipal | Greenfield | |
| - | - | Greensboro Municipal | Greensboro | |
| - | - | Greensburg Jeannette Regional | Jeannette | |
| - | - | Greensburg-Decatur Co | Greensburg | |
| - | - | Greensfield Airport | Moscow Mills | |
| - | - | Greenville Municipal | Greenville | |
| - | - | Greenville Municipal | Greenville | |
| - | - | Greenville Municipal | Greenville | |
| - | KPRN | Greenville Municipal | Greenville | |
| GRE | KGRE | Greenville Municipal Airport | Greenville | |
| - | - | Greenville Seaplane Base | Greenville | |
| - | - | Greenville-Rainbow | Greenville | |
| JGP | - | Greenway Plaza Heliport | Houston | |
| GRD | KGRD | Greenwood County Airport | Greenwood | |
| - | - | Greenwood Lake | West Milford | |
| - | KHFY | Greenwood Municipal Airport | Indianapolis | |
| - | - | Gregory Municipal | Gregory | |
| - | KGNF | Grenada Municipal | Grenada | |
| - | - | Grenora Centennial | Grenora | |
| PBF | KPBF | Grider Field | Pine Bluff | |
| - | - | Griffin Memorial | Wiggins | |
| SKY | KSKY | Griffin Sandusky Airport | Sandusky | |
| - | - | Griffin-Spalding Co | Griffin | |
| - | - | Griffith-Merrillville | Griffith | |
| - | - | Grimes | Bethel | |
| - | - | Grimes | Urbana | |
| - | KGGI | Grinnell Regional | Grinnell | |
| GUS | KGUS | Grissom Air Force Base | Peru | |
| - | - | Gross | Pinconning | |
| - | KONZ | Grosse Ile Municipal Airport | Detroit | |
| - | - | Groton Municipal | Groton | |
| - | - | Grove | Camas | |
| - | - | Grove City | Grove City | |
| - | - | Grove Hill Municipal | Grove Hill | |
| BPA | - | Grumman Airport | Bethpage | |
| - | - | Grund | Ithaca | |
| - | - | Grundman | Nebraska City | |
| - | - | Grundy Center Municipal | Grundy Center | |
| - | KGDY | Grundy Municipal | Grundy | |
| - | - | Grutzmacher Municipal | Onaga | |
| - | - | Gruver Municipal | Gruver | |
| - | - | Grygla Mun-Wilkens | Grygla | |
| - | - | Gtr Green River Intergalactic* | Green River | |
| GKN | PAGK | Gulkana Airport | Gulkana | |
| - | - | Gundys | Owasso | |
| - | - | Guntersville Municipal | Guntersville | |