# List of airline codes (U)

This is a list of all airline codes. The table lists the IATA airline designators, the ICAO airline designators and the airline call signs (telephony designator). Historical assignments are also included for completeness.

## Airline codes for airlines beginning with:

* All
* 0–9
* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z

## Codes

Airline codes :
| IATA | ICAO | Airline | Call sign | Country | Comments |
| | UEU | United European Airlines | UNITED EUROPEAN | Romania | 2014 |
| | UCG | Uniworld Air Cargo | UNIWORLD | Panama | 2014 |
| | CUH | Urumqi Airlines | LOULAN | China | 2014 |
| | DOD | USAF Air Mobility Operations Control Center | | United States | |
| | DOI | U.S. Department of the Interior | INTERIOR | United States | Office of Aircraft Services |
| | CNV | U.S. Navy Reserve Logistic Air Forces | CONVOY | United States | U.S. Navy Reserve Logistic Air Forces, New Orleans, LA, USA |
| | EXM | United Kingdom Civil Aviation Authority | EXAM | United Kingdom | CAA Flight Examiners |
| | GIH | Union des Transports Africains de Guinee | TRANSPORT AFRICAIN | Guinea | |
| | GKA | US Army Parachute Team | GOLDEN KNIGHTS | United States | |
| | GWY | USA3000 Airlines | GETAWAY | United States | was U5 |
| B7 | UIA | UNI Air | GLORY | Taiwan | |
| | UAB | United Arabian Airlines | UNITED ARABIAN | Sudan | |
| UA | UAL | United Airlines | UNITED | United States | |
| 4H | UBD | United Airways | UNITED BANGLADESH | Bangladesh | |
| | UAC | United Air Charters | UNITAIR | Zimbabwe | |
| | UCS | United Carriers Systems | UNITED CARRIERS | United States | |
| | UEA | United Eagle Airlines | UNITED EAGLE | China | |
| | UFS | United Feeder Service | FEEDER EXPRESS | United States | formerly part of United Express |
| | CFU | United Kingdom Civil Aviation Authority | MINAIR | United Kingdom | Civil Aviation Authority Flying Unit |
| | KRF | United Kingdom Royal VIP Flights | KITTYHAWK | United Kingdom | In Military Aircraft |
| | KRH | United Kingdom Royal VIP Flight | SPARROWHAWK | United Kingdom | In Civil Chartered Aircraft |
| | SDS | United Kingdom Civil Aviation Authority | STANDARDS | United Kingdom | Training Standards |
| | TQF | United Kingdom Royal VIP Flights | RAINBOW | United Kingdom | Helicopter Flights |
| | CGX | United States Coast Guard Auxiliary | COASTGUARD AUXAIR | United States | |
| | AGR | United States Department Of Agriculture | AGRICULTURE | United States | |
| | UAD | University Air Squadron | | United Kingdom | MOD Boscombe Down |
| | UAJ | University Air Squadron | | United Kingdom | Glasgow |
| | UAA | University Air Squadron | | United Kingdom | Leuchars |
| | UAS | University Air Squadron | | United Kingdom | RAF Cranwell |
| | HBU | Universal Avia | KHARKIV UNIVERSAL | Ukraine | |
| | HLE | UK HEMS | HELIMED | United Kingdom | |
| U7 | JUS | USA Jet Airlines | JET USA | United States | |
| | LEA | Unijet | LEADAIR | France | |
| | MSH | US Marshals Service | MARSHALAIR | United States | US Department of Justice |
| | NDU | University of North Dakota | SIOUX | United States | |
| | PNA | Universal Airlines | PACIFIC NORTHERN | United States | |
| | | Upali Air | UPALI | Sri Lanka | defunct |
| | RAU | Uganda Royal Airways | UGANDA ROYAL | Uganda | |
| | SAU | United Aviation Services | UNISERVE | Spain | |
| U6 | SVR | Ural Airlines | SVERDLOVSK AIR | Russia | |
| | TRB | Ukraine Transavia | KIROVTRANS | Ukraine | |
| | UAF | United Arab Emirates Air Force | UNIFORCE | United Arab Emirates | |
| | UAI | Union Africaine des Transports | UNAIR | Ivory Coast | |
| | UCC | Uganda Air Cargo | UGANDA CARGO | Uganda | |
| | UCH | US Airports Air Charter | US CHARTER | United States | |
| | UCO | Ucoaviacion | UCOAVIACION | Spain | |
| | UES | Ues-Avia Aircompany | AVIASYSTEM | Ukraine | |
| QU | UGA | Uganda Airlines (1976–2001) | UGANDA | Uganda | Ceased operations 2001 |
| UR | UGD | Uganda Airlines | CRESTED | Uganda | Started operations in 2019 |
| | UGC | Urgemer Canarias | URGEMER | Spain | |
| | UHL | Ukrainian Helicopters | UKRAINE COPTERS | Ukraine | |
| | UHS | Ulyanovsk Higher Civil Aviation School | PILOT AIR | Russia | |
| | UJR | Universal Jet Rental de Mexico | UNIVERSAL JET | Mexico | |
| | UJT | Universal Jet Aviation | UNI-JET | United States | Cancelled 2014 - Renamed Journey Aviation with code JNY |
| | UKI | UK International Airlines | KHALIQ | United Kingdom | |
| | UKL | Ukraine Air Alliance | UKRAINE ALLIANCE | Ukraine | |
| UF | UKM | UM Airlines | UKRAINE MEDITERRANEE | Ukraine | Ukraine Mediterranean Airlines |
| | UKN | Ukraine Air Enterprise | ENTERPRISE UKRAINE | Ukraine | |
| | UKP | National Police Air Service | POLICE | United Kingdom | |
| 6Z | UKS | Ukrainian Cargo Airways | CARGOTRANS | Ukraine | |
| | ULT | Ultrair | ULTRAIR | United States | |
| | ULH | Ultimate HELI | ULTIMATEHELI | South Africa | Ultimate HELI (Pty) Ltd |
| | ULR | Ultimate Air | VIPER | South Africa | Ultimate Airways (Pty) Ltd |
| OL | ULS | Ultra Air | AIR ULTRA | Colombia | |
| | UNC | Uni-Fly | UNICOPTER | Denmark | |
| | UNF | Union Flights | UNION FLIGHTS | United States | |
| | UNJ | Universal Jet | PROJET | Spain | |
| | UNS | Unsped Paket Servisi | UNSPED | Turkey | |
| | UNU | Unifly Servizi Aerei | UNIEURO | Italy | |
| | UPL | Ukrainian Pilot School | PILOT SCHOOL | Ukraine | |
| 5X | UPS | United Parcel Service | UPS | United States | |
| | URV | Uraiavia | URAI | Russia | |
| US | AWE | US Airways | CACTUS | United States | defunct, merged with American Airlines in 2015 |
| BS | UBG | US-Bangla Airlines | BANGLA STAR | Bangladesh | |
| | USF | USAfrica Airways | AFRICA EXPRESS | United States | |
| UH | USH | US Helicopter | US-HELI | United States | |
| | USJ | US Jet | USJET | United States | |
| | USX | US Express | AIR EXPRESS | United States | |
| QU | UTN | Skyline Express (airline) | Skyline Express Airline | Ukraine | |
| | TUM | UTAir | UTAIR-CARGO | Russian Federation | 2014 |
| UT | UTA | UTair Aviation | UTAIR | Russia | WAS P2 till 2006 |
| | UTR | Utair South Africa | AIRUT | South Africa | |
| | UTS | Ukrainian State Air Traffic Service Enterprise | AIRRUH | Ukraine | |
| | UTU | Urartu-Air | | Armenia | |
| | UVA | Universal Airways | UNIVERSAL | United States | |
| | UVG | Universal Airlines | GUYANA JET | Guyana | |
| | UVM | Uvavemex | UVAVEMEX | Mexico | |
| | AIO | United States Air Force | AIR CHIEF | United States | Chief of Staff |
| | UVN | United Aviation | UNITED AVIATION | Kuwait | |
| HY | UZB | Uzbekistan Airways | UZBEK | Uzbekistan | |
| PS | AUI | Ukraine International Airlines | UKRAINE INTERNATIONAL | Ukraine | |
| | WEC | Universal Airlines | AIRGO | United States | |
| US | | Unavia Suisse | | Switzerland | |
| | QID | USAF 100th Air Refueling Wing | QUID | United States | |
| | UIT | University of Tromsø School of Aviation | ARCTIC | Norway | |
| | UNO | United Nations | UNITED NATIONS | n/a | UNOxxx followed by P(peacekeeping), or H(Humanitarian) |