| Ua Huka | French Polynesia | UAH | More info |
| Ua Pou | French Polynesia | UAP | More info |
| Uaxactun | Guatemala | UAX | More info |
| Ubari | Libya | QUB | More info |
| Ubatuba | Brazil | UBT | More info |
| Ube | Japan | UBJ | More info |
| Uberaba | Brazil | UBA | More info |
| Ubrub | Indonesia | UBR | More info |
| Udomxay | Laos | UDO | More info |
| Udon Thani | Thailand | UTH | More info |
| Udorn | Thailand | BAO | More info |
| Ufa | Russian Federation | UFA | More info |
| Uganik | United States | UGI | More info |
| Ugashik | United States | UGS | More info |
| Ugashik Bay | United States | UGB | More info |
| Uige | Angola | UGO | More info |
| Ujae Island | Marshall Islands | UJE | More info |
| Ukhta | Russian Federation | UCT | More info |
| Ukiah | United States | UKI | More info |
| Ukunda | Kenya | UKA | More info |
| Ulaangom | Mongolia | ULO | More info |
| Ulanhot | China | HLH | More info |
| Ulan-ude | Ulan-ude | UUD | More info |
| Ulawa Airport | Solomon Islands | RNA | More info |
| Ulei | Vanuatu | ULB | More info |
| Ulemiste | Estonia | TLL | More info |
| Ulgit | Mongolia | ULG | More info |
| Uliastai | Mongolia | ULZ | More info |
| Ulithi | Micronesia | ULI | More info |
| Ulsan | Korea (South) | USN | More info |
| Ulundi | South Africa | ULD | More info |
| Ulusaba | South Africa | ULX | More info |
| Ulyanovsk | Russian Federation | ULY | More info |
| Umba | Papua New Guinea | UMC | More info |
| Umea | Sweden | UME | More info |
| Umiat | United States | UMT | More info |
| Umiujaq | Canada | YUD | More info |
| Umnak | United States | UNS | More info |
| Umnugobitour | Mongolia | UGT | More info |
| Umtata | South Africa | UTT | More info |
| Una | Brazil | UNA | More info |
| Unalakleet | United States | UNK | More info |
| Unayzah | Saudi Arabia | UZH | More info |
| Undarra | Australia | UDA | More info |
| Underkhaan | Mongolia | UNR | More info |
| Unguia | Colombia | UNC | More info |
| Union Island | Saint Vincent and the Grenadines | UNI | More info |
| Union Station H/P | United States | JLX | More info |
| Universal City H/P | United States | JUC | More info |
| University Of Illinois Willard | United States | CMI | More info |
| University Park | United States | SCE | More info |
| University-Oxford | United States | UOX | More info |
| Upala | Costa Rica | UPL | More info |
| Upavon | United Kingdom | UPV | More info |
| Upiara | Papua New Guinea | UPR | More info |
| Upington | South Africa | UTN | More info |
| Upolu Point | United States | UPP | More info |
| Upper Bucks | United States | UKT | More info |
| Uraj | Russian Federation | URJ | More info |
| Uralsk | Kazakhstan | URA | More info |
| Uranium City | Canada | YBE | More info |
| Urgench | Uzbekistan | UGC | More info |
| Urgoon | Afghanistan | URN | More info |
| Uribe | Colombia | URI | More info |
| Uriman | Venezuela | URM | More info |
| Urmieh | Iran | OMH | More info |
| Uroubi | Papua New Guinea | URU | More info |
| Urrao | Colombia | URR | More info |
| Uruapan | Mexico | UPN | More info |
| Urumqi | China | URC | More info |
| Uruzgan | Afghanistan | URZ | More info |
| US Army Heliport | United States | JLH | More info |
| USAF Academy | United States | AFF | More info |
| USAF Heliport | United States | WWS | More info |
| Usak | Turkey | USQ | More info |
| Uscg Shore St | Guam | NRV | More info |
| Useless Loop | Australia | USL | More info |
| Usiminas | Brazil | IPN | More info |
| Usino | Papua New Guinea | USO | More info |
| Usinsk | Russian Federation | USK | More info |
| USN Heliport | United States | NDV | More info |
| Ustaoset Railway | Norway | XUX | More info |
| Ust-Ilimsk | Russian Federation | UIK | More info |
| Ust-kamenogorsk | Kazakhstan | UKK | More info |
| Ust-Kut | Russian Federation | UKX | More info |
| Ustupo | Panama | UTU | More info |
| Utapao | Thailand | UTP | More info |
| Utica NNY Rail | United States | ZUA | More info |
| Utila | Honduras | UII | More info |
| Utirik Island | Marshall Islands | UTK | More info |
| Uttaradit | Thailand | UTR | More info |
| Utti | Finland | UTI | More info |
| Uummannaq | Greenland | UMD | More info |
| Uvol | Papua New Guinea | UVO | More info |
| Uzein | France | PUF | More info |
| Uzhgorod | Ukraine | UDJ | More info |