1U 1U airline code: ITA Software
1U is the IATA airline code for ITA Software, based in the United States.
ITA Software codes
| IATA code | 1U |
|---|---|
| ICAO code | Not listed |
| Airline | ITA Software |
| Country | United States |
| Status | Listed as operating (data checked 1 October 2026) |
Source: the airline database behind Easy PNR Converter (Wikidata and OpenFlights), checked against Wikidata and Wikipedia on 1 October 2026. IATA codes of airlines that stop flying can later be given to another airline.
How 1U appears in a PNR
In an Amadeus, Sabre, Galileo or Worldspan flight segment the two-character airline code comes first, directly before the flight number, so every flight sold under this code starts with 1U. Codeshare flights carry the marketing airline's code, so the airline operating the aircraft can be a different one. Paste a PNR into the free PNR converter and 1U is shown as ITA Software with its logo, next to local times and the true flight duration.
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