| IATA | ICAO | Airport name | Location served |
|---|
| -UA- |
|---|
| UAB | LTAG | Incirlik Air Base [1] | Adana, Turkey |
| UAC | | San Luis Río Colorado Airport [1] | San Luis Río Colorado, Sonora, Mexico |
| UAE | | Mount Aue Airport [1] | Mount Aue, Papua New Guinea |
| UAH | NTMU | Ua Huka Airport [1] | Ua Huka, Marquesas Islands, French Polynesia |
| UAI | WPDB | Suai Airport [1] | Suai, East Timor |
| UAK | BGBW | Narsarsuaq Airport | Narsarsuaq, Greenland |
| UAL | FNUA | Luau Airport | Luau, Angola |
| UAM | PGUA | Andersen Air Force Base | Hagåtña (Agana), Guam |
| UAP | NTMP | Ua Pou Airport [1] | Ua Pou, Marquesas Islands, French Polynesia |
| UAQ | SANU | Domingo Faustino Sarmiento Airport | San Juan, San Juan, Argentina |
| UAR | GMFB | Bouarfa Airport [1] | Bouarfa, Morocco |
| UAS | HKSB | Samburu Airport [1] (Buffalo Spring Airport) | Samburu, Kenya |
| UAX | | Uaxactun Airport [1] | Uaxactun, Guatemala |
| -UB- |
|---|
| UBA | SBUR | Mário de Almeida Franco Airport | Uberaba, Minas Gerais, Brazil |
| UBB | YMAA | Mabuiag Island Airport [1] | Mabuiag Island, Queensland, Australia |
| UBI | | Buin Airport [1] | Buin, Papua New Guinea |
| UBJ | RJDC | Yamaguchi Ube Airport | Ube, Honshu, Japan |
| UBN | ZMCK | Chinggis Khaan International Airport | Sergelen, Töv, Mongolia |
| UBP | VTUU | Ubon Ratchathani Airport | Ubon Ratchathani, Thailand |
| UBR | WAJU | Ubrub Airport [1] | Ubrub, Indonesia |
| UBS | KUBS | Columbus-Lowndes County Airport | Columbus, Mississippi, United States |
| UBT | SDUB | Ubatuba Airport [1] (Gastão Madeira Airport) | Ubatuba, São Paulo, Brazil |
| UBU | YKAL | Kalumburu Airport [1] | Kalumburu, Western Australia, Australia |
| -UC- |
|---|
| UCB | | Ulanqab Airport [1] | Ulanqab, Inner Mongolia, China |
| UCC | KUCC | Yucca Airstrip (FAA: NV11) | Mercury, Nevada, United States |
| UCE | | Eunice Airport (FAA: 4R7) | Eunice, Louisiana, United States |
| UCK | UKLC | Lutsk Airport [1] | Lutsk, Ukraine |
| UCN | GLBU | Buchanan Airport | Buchanan, Liberia |
| UCT | UUYH | Ukhta Airport | Ukhta, Komi Republic, Russia |
| UCY | KUCY | Everett–Stewart Regional Airport | Union City, Tennessee, United States |
| -UD- |
|---|
| UDA | YUDA | Undara Airport [1] | Undara, Queensland, Australia |
| UDD | KUDD | Bermuda Dunes Airport | Palm Springs, California, United States |
| UDE | EHVK | Volkel Air Base | Uden, Netherlands |
| UDI | SBUL | Ten. Cel. Av. César Bombonato Airport | Uberlândia, Minas Gerais, Brazil |
| UDJ | UKLU | Uzhhorod International Airport [1] | Uzhhorod, Ukraine |
| UDN | LIPD | Campoformido Airport [1] | Udine, Friuli-Venezia Giulia, Italy |
| UDR | VAUD | Maharana Pratap Airport | Udaipur, Rajasthan, India |
| -UE- |
|---|
| UEE | YQNS | Queenstown Airport [1] | Queenstown, Tasmania, Australia |
| UEL | FQQL | Quelimane Airport | Quelimane, Mozambique |
| UEN | USDU | Urengoy Airport [1] | Urengoy, Yamalo-Nenets Autonomous Okrug, Russia |
| UEO | ROKJ | Kumejima Airport [1] | Kumejima, Okinawa Islands, Japan |
| UES | KUES | Waukesha County Airport (Crites Field) | Waukesha, Wisconsin, United States |
| UET | OPQT | Quetta International Airport | Quetta, Pakistan |
| -UF- |
|---|
| UFA | UWUU | Ufa International Airport | Ufa, Bashkortostan, Russia |
| -UG- |
|---|
| UGA | ZMBN | Bulgan Airport | Bulgan, Mongolia |
| UGB | | Ugashik Bay Airport | Pilot Point, Alaska, United States |
| UGC | UTNU | Urgench International Airport | Urgench, Uzbekistan |
| UGI | | San Juan (Uganik) Seaplane Base (FAA: WSJ) | Uganik, Alaska, United States |
| UGL | SCGC | Union Glacier Blue-Ice Runway | Heritage Range, Ellsworth Mountains, Antarctica |
| UGN | KUGN | Waukegan National Airport | Waukegan, Illinois, United States |
| UGO | FNUG | Uíge Airport [1] | Uíge, Angola |
| UGS | | Ugashik Airport (FAA: 9A8) | Ugashik, Alaska, United States |
| UGT | ZMBR | Bulagtai Airport [1] | Bulagtai, Mongolia |
| UGU | | Bilogai Airport [1] | Bilogai, Indonesia |
| -UH- |
|---|
| UHE | LKKU | Kunovice Airport | Uherské Hradiště, Czech Republic |
| -UI- |
|---|
| UIB | SKUI | El Caraño Airport | Quibdó, Colombia |
| UIH | VVPC | Phu Cat Airport | Qui Nhơn, Vietnam |
| UII | MHUT | Útila Airport | Útila, Honduras |
| UIK | UIBS | Ust-Ilimsk Airport | Ust-Ilimsk, Irkutsk Oblast, Russia |
| UIL | KUIL | Quillayute Airport | Forks, Washington, United States |
| UIN | KUIN | Quincy Regional Airport (Baldwin Field) | Quincy, Illinois, United States |
| UIO | SEQM | Mariscal Sucre International Airport | Quito, Ecuador |
| UIP | LFRQ | Quimper–Cornouaille Airport (Pluguffan) | Quimper, Brittany, France |
| UIQ | NVVQ | Quoin Hill Airfield | Quoin Hill, Vanuatu |
| UIR | YQDI | Quirindi Airport [1] | Quirindi, New South Wales, Australia |
| UIT | | Jaluit Airport (FAA: N55) | Jaluit Atoll, Marshall Islands |
| -UJ- |
|---|
| UJE | | Ujae Airport | Ujae Atoll, Marshall Islands |
| UJN | RKTL | Uljin Airport [1] | Uljin, South Korea |
| UJU | ZKUJ | Uiju Airfield [1] | Uiju, North Korea |
| -UK- |
|---|
| UKA | HKUK | Ukunda Airport [1] (Diani Airport) | Ukunda, Kenya |
| UKB | RJBE | Kobe Airport | Kobe / Osaka, Honshu, Japan |
| UKE | VEUK | Utkela Airport | Bhawanipatna, Kalahandi district, Odisha, India |
| UKG | UEBT | Ust-Kuyga Airport | Ust-Kuyga, Yakutia, Russia |
| UKH | OOMK | Mukhaizna Airport [1] | Mukhaizna, Oman |
| UKI | KUKI | Ukiah Municipal Airport | Ukiah, California, United States |
| UKK | UASK | Oskemen Airport (Ust-Kamenogorsk Airport) | Oskemen (Ust-Kamenogorsk), Kazakhstan |
| UKN | | Waukon Municipal Airport (FAA: Y01) | Waukon, Iowa, United States |
| UKR | OYMK | Mukeiras Airport [1] | Mukayras, Yemen |
| UKS | UKFB | Sevastopol International Airport [1] | Sevastopol |
| UKT | KUKT | Quakertown Airport | Quakertown, Pennsylvania, United States |
| UKU | | Nuku Airport [1] | Nuku, Papua New Guinea |
| UKX | UITT | Ust-Kut Airport | Ust-Kut, Irkutsk Oblast, Russia |
| -UL- |
|---|
| ULA | SAWJ | Capitán José Daniel Vazquez Airport [1] | Puerto San Julián, Santa Cruz, Argentina |
| ULB | NVSU | Ulei Airport [1] | Ulei, Vanuatu |
| ULD | FAUL | Ulundi Airport [1] | Ulundi, South Africa |
| ULE | | Sule Airport [1] | Sule, Papua New Guinea |
| ULG | ZMUL | Ölgii Airport [1] | Ölgii, Mongolia |
| ULH | OEAO | Prince Abdul Majeed bin Abdulaziz Domestic Airport [1] | Al-'Ula, Saudi Arabia |
| ULI | | Ulithi Airport (FAA: TT02) | Ulithi, Federated States of Micronesia |
| ULK | UERL | Lensk Airport [1] | Lensk, Yakutia, Russia |
| ULL | | Glenforsa Airfield [1] | Mull, Scotland, United Kingdom |
| ULM | KULM | New Ulm Municipal Airport | New Ulm, Minnesota, United States |
| ULN | ZMUB | Buyant-Ukhaa International Airport | Ulaanbaatar, Mongolia |
| ULO | ZMUG | Ulaangom Airport | Ulaangom, Mongolia |
| ULP | YQLP | Quilpie Airport [1] | Quilpie, Queensland, Australia |
| ULQ | SKUL | Heriberto Gíl Martínez Airport [1] | Tuluá, Colombia |
| ULS | | Mulatos Airport | Mulatos, Colombia |
| ULU | HUGU | Gulu Airport [1] | Gulu, Uganda |
| ULV | UWLL | Ulyanovsk Baratayevka Airport | Ulyanovsk, Ulyanovsk Oblast, Russia |
| ULX | | Ulusaba Airstrip [1] | Ulusaba, South Africa |
| ULY | UWLW | Ulyanovsk Vostochny Airport | Ulyanovsk, Ulyanovsk Oblast, Russia |
| ULZ | ZMDN | Donoi Airport [1] | Uliastai, Mongolia |
| -UM- |
|---|
| UMA | | Punta de Maisí Airport | Maisí, Cuba |
| UMC | | Umba Airport [1] | Umba, Papua New Guinea |
| UME | ESNU | Umeå Airport | Umeå, Sweden |
| UMI | SPIL | Quince Mil Airport [1] | Quince Mil, Peru |
| UMM | PAST | Summit Airport | Summit, Alaska, United States |
| UMR | YPWR | RAAF Woomera Airfield [1] | Woomera, South Australia, Australia |
| UMS | UEMU | Ust-Maya Airport | Ust-Maya, Yakutia, Russia |
| UMT | PAUM | Umiat Airport | Umiat, Alaska, United States |
| UMU | SSUM | Orlando de Carvalho Airport [1] | Umuarama, Paraná, Brazil |
| UMY | UKHS | Sumy Airport [1] | Sumy, Ukraine |
| UMZ | KMEZ | Mena Intermountain Municipal Airport | Mena, Arkansas, United States |
| -UN- |
|---|
| UNA | SBTC | Una-Comandatuba Airport [1] | Una / Comandatuba Island, Bahia, Brazil |
| UNC | | Unguía Airport | Unguía, Colombia |
| UND | OAUZ | Kunduz Airport | Kunduz, Afghanistan |
| UNE | FXQN | Qacha's Nek Airport [1] | Qacha's Nek, Lesotho |
| UNG | AYKI | Kiunga Airport [1] | Kiunga, Papua New Guinea |
| UNI | TVSU | Union Island Airport | Union Island, Saint Vincent and the Grenadines |
| UNK | PAUN | Unalakleet Airport | Unalakleet, Alaska, United States |
| UNN | VTSR | Ranong Airport | Ranong, Thailand |
| UNR | ZMUH | Öndörkhaan Airport | Öndörkhaan, Mongolia |
| UNT | | Unst Airport [1] | Unst, Scotland, United Kingdom |
| UNU | KUNU | Dodge County Airport | Juneau, Wisconsin, United States |
| -UO- |
|---|
| UOA | NTTX | Mururoa Airport [1] | Moruroa (Mururoa), Tuamotus, French Polynesia |
| UOL | WAMY | Pogogul Airport | Buol, Indonesia |
| UOS | KUOS | Franklin County Airport | Sewanee, Tennessee, United States |
| UOX | KUOX | University-Oxford Airport | Oxford, Mississippi, United States |
| -UP- |
|---|
| UPB | MUPB | Playa Baracoa Airport [1] | Havana, Cuba |
| UPG | WAAA | Sultan Hasanuddin International Airport | Makassar, Indonesia |
| UPL | MRUP | Upala Airport | Upala, Costa Rica |
| UPN | MMPN | Ignacio López Rayón International Airport | Uruapan, Michoacán, Mexico |
| UPP | PHUP | Upolu Airport | Hawi, Hawaii, United States |
| UPR | | Upiara Airport [1] | Upiara, Papua New Guinea |
| UPV | EGDJ | RAF Upavon [1] | Upavon, England, United Kingdom |
| -UR- |
|---|
| URA | UARR | Oral Ak Zhol Airport | Oral (Uralsk), Kazakhstan |
| URB | | Castilho Airport [1] (Urubupunga Airport) | Castilho, São Paulo, Brazil |
| URC | ZWWW | Ürümqi Diwopu International Airport | Ürümqi, Xinjiang, China |
| URD | EDQE | Burg Feuerstein Airport [1] | Burg Feuerstein, Bavaria, Germany |
| URE | EEKE | Kuressaare Airport | Kuressaare, Estonia |
| URG | SBUG | Rubem Berta International Airport | Uruguaiana, Rio Grande do Sul, Brazil |
| URI | SKUB | Uribe Airport | La Uribe, Colombia |
| URJ | USHU | Uray Airport | Uray, Khanty-Mansi Autonomous Okrug, Russia |
| URM | SVUM | Uriman Airport [1] | Uriman, Venezuela |
| URN | OAOG | Urgun Airport | Urgun, Afghanistan |
| URO | LFOP | Rouen Airport (Vallée de Seine Airport) | Rouen, Upper Normandy, France |
| URR | SKUR | Urrao Airport [1] | Urrao, Colombia |
| URS | UUOK | Kursk Vostochny Airport | Kursk, Kursk Oblast, Russia |
| URT | VTSB | Surat Thani Airport | Surat Thani, Thailand |
| URU | | Uroubi Airport [1] | Uroubi, Papua New Guinea |
| URY | OEGT | Gurayat Domestic Airport [1] | Qurayyat (Gurayat), Saudi Arabia |
| URZ | OARG | Uruzgan Airport | Khas Uruzgan, Afghanistan |
| -US- |
|---|
| USA | KJQF | Concord Regional Airport (FAA: JQF) | Concord, North Carolina, United States |
| USC | | Union County Airport/Troy Shelton Field (FAA: 35A) | Union, South Carolina, United States |
| USH | SAWH | Ushuaia – Malvinas Argentinas International Airport | Ushuaia, Tierra del Fuego, Argentina |
| USI | SYMB | Mabaruma Airport | Mabaruma, Guyana |
| USJ | UAAL | Usharal Airport | Usharal, Kazakhstan |
| USK | UUYS | Usinsk Airport [1] | Usinsk, Komi Republic, Russia |
| USL | YUSL | Useless Loop Airport [1] | Useless Loop, Western Australia, Australia |
| USM | VTSM | Samui Airport | Ko Samui, Thailand |
| USN | RKPU | Ulsan Airport [1] | Ulsan, South Korea |
| USO | | Usino Airport [1] | Usino, Papua New Guinea |
| USQ | LTBO | Uşak Airport | Uşak, Turkey |
| USR | UEMT | Ust-Nera Airport | Ust-Nera, Yakutia, Russia |
| USS | MUSS | Sancti Spíritus Airport [1] | Sancti Spíritus, Cuba |
| UST | KSGJ | Northeast Florida Regional Airport (FAA: SGJ) | St. Augustine, Florida, United States |
| USU | RPVV | Francisco B. Reyes Airport | Busuanga, Philippines |
| -UT- |
|---|
| UTA | FVMU | Mutare Airport | Mutare, Zimbabwe |
| UTB | YMTB | Muttaburra Airport [1] | Muttaburra, Queensland, Australia |
| UTC | EHSB | Soesterberg Air Base | Utrecht, Netherlands |
| UTD | | Nutwood Downs Airport [1] | Nutwood Downs, Northern Territory, Australia |
| UTG | FXQG | Quthing Airport [1] | Quthing, Lesotho |
| UTH | VTUD | Udon Thani International Airport | Udon Thani, Thailand |
| UTI | EFUT | Utti Airport | Utti, Finland |
| UTK | | Utirik Airport (FAA: 03N) | Utirik Atoll, Marshall Islands |
| UTM | KUTA | Tunica Municipal Airport (FAA: UTA) | Tunica, Mississippi, United States |
| UTN | FAUP | Upington Airport | Upington, South Africa |
| UTO | PAIM | Indian Mountain LRRS Airport | Utopia Creek, Alaska, United States |
| UTP | VTBU | U-Tapao International Airport | Rayong, Thailand |
| UTS | UUYX | Ust-Tsilma Airport [1] | Ust-Tsilma, Komi Republic, Russia |
| UTT | FAUT | Mthatha Airport | Mthatha (Umtata), South Africa |
| UTU | | Ustupo Airport [1] | Ustupo, Panama |
| UTW | FAQT | Queenstown Airport [1] | Queenstown, South Africa |
| -UU- |
|---|
| UUA | UWKB | Bugulma Airport | Bugulma, Tatarstan, Russia |
| UUD | UIUU | Baikal International Airport | Ulan-Ude, Buryatia, Russia |
| UUK | PAKU | Ugnu-Kuparuk Airport (FAA: UBW) | Kuparuk, Alaska, United States |
| UUN | ZMBU | Baruun-Urt Airport [1] | Baruun-Urt, Mongolia |
| UUS | UHSS | Yuzhno-Sakhalinsk Airport (Khomutovo Airport) | Yuzhno-Sakhalinsk, Sakhalin Oblast, Russia |
| UUU | | Manumu Airport | Manumu, Papua New Guinea |
| -UV- |
|---|
| UVA | KUVA | Garner Field | Uvalde, Texas, United States |
| UVE | NWWV | Ouvéa Airport [1] (Ouloup Airport) | Ouvéa, New Caledonia |
| UVF | TLPL | Hewanorra International Airport | Vieux Fort, Saint Lucia |
| UVI | SSUV | União da Vitória Airport [1] | União da Vitória, Paraná, Brazil |
| UVL | HEKG | El Kharga Airport [1] | Kharga Oasis, Egypt |
| UVO | | Uvol Airport [1] | Uvol, Papua New Guinea |
| -UY- |
|---|
| UYL | HSNN | Nyala Airport | Nyala, Sudan |
| UYN | ZLYL | Yulin Yuyang Airport | Yulin, Shaanxi, China |
| UYU | SLUY | Uyuni Airport (Joya Andina Airport) | Uyuni, Bolivia |
| -UZ- |
|---|
| UZC | LYUZ | Užice-Ponikve Airport | Užice, Serbia |
| UZM | | Hope Bay Aerodrome [1] (TC: CHB3) | Hope Bay, Nunavut, Canada |
| UZR | | Urzhar Airport | Urzhar (Urdzhar), Kazakhstan |
| UZU | SATU | Curuzú Cuatiá Airport | Curuzú Cuatiá, Corrientes, Argentina |