| | Airport Code | City | State/Region | Country | Airport Name | | GTF | Great Falls | MT | USA | Great Falls International |
| GTO | Gorontalo | | Indonesia | Tolotio |
| GTR | Columbus | MS | USA | Golden |
| GUA | Guatemala City | | Guatemala | La Aurora Intl Airport |
| GUB | Guerrero Negro | Baja California Sur | Mexico | Guerrero Negro Airport |
| GUC | Gunnison | CO | USA | Gunnison County Airport |
| GUM | Guam | | Guam | Ab Wonpat Intl Airport |
| GUP | Gallup | NM | USA | Gallup Municipal |
| GUR | Alotau | | Papua New Guinea | Gurney |
| GVA | Geneva | | Switzerland | Geneva |
| GWD | Gwadar | | Pakistan | |
| GWT | Westerland | | Germany | Westerland |
| GWY | Galway | | Ireland | Carnmore |
| GXQ | Coyhaique | | Chile | Teniente Vidal |
| GYE | Guayaquil | | Ecuador | Simon Bolivar |
| GYM | Guaymas | Sonora | Mexico | |
| GYY | Gary | IN | USA | |
| HAD | Halmstad | | Sweden | Halmstad |
| HAG | The Hague | | Netherlands | |
| HAH | Moroni (Hahaya) | | Comoros | |
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