United Airlines (UA) airline code, fares and API for travel agents
- IATA UA
- ICAO UAL
- Star Alliance
- Full-service
Search United Airlines (UA) fares
United Airlines airline codes
- IATA code
- UA
- ICAO code
- UAL
- Main hub
- Chicago (ORD)
- Alliance
- Star Alliance
- Airline type
- Full-service
- Country
- United States
About United Airlines
United Airlines is a Chicago-headquartered network carrier and one of the founding members of Star Alliance. Its hubs sit at Chicago O'Hare, Denver, Houston, Newark, San Francisco, Los Angeles and Washington Dulles, which gives it coverage on both coasts and in the middle of the country. United has a wide international reach for a US airline, with routes across the Atlantic and Pacific as well as to Latin America, Africa, the Middle East, India and Australia. United Express partners fly regional routes. Long-haul cabins are Polaris business, Premium Plus, Economy Plus and economy.
To book United on IATA.co, run a search in the booking portal or call the flights API with your origin, destination and dates. Results are live, and tickets are paid from your prepaid balance. United Airlines fares appear in your search results whenever our flight suppliers offer them for your route and dates. If a route does not return United, it usually means no supplier is offering that fare at that moment, so it is worth trying nearby dates.
United Airlines airline codes explained
United Airlines uses the two-letter IATA airline code UA and the three-letter ICAO code UAL. The IATA code UA is the one shown on tickets, fare displays and booking screens, while the ICAO code UAL is used in air traffic control and flight planning.
United Airlines is a full-service carrier, based in United States, operating mainly from Chicago (ORD). It is a member of Star Alliance.
Booking United Airlines fares as a travel agent
Travel agents book United Airlines fares on IATA.co without their own IATA accreditation. Activate an agency account, top up a prepaid balance, then search live UA fares in the booking portal: the price, baggage and fare rules are shown with each offer before you confirm, and the amount is deducted from your balance. United Airlines results appear whenever our flight suppliers return them for your route and dates, so what you can book follows live supplier content rather than a direct airline deal.
Search United Airlines (UA) through the flights API
Developers and agencies can run the same United Airlines search from their own site, app or back office through the IATA.co flights API. Filter a search by the carrier code UA and read the fares back as JSON, then book from the same prepaid balance. See the flights API and the API docs for the full reference.
GET /api/v1/flights/search?origin=ORD&destination=DXB&date=2026-12-14&carrier=UA
Host: iata.co
Authorization: Bearer YOUR_API_KEY
HTTP/1.1 200 OK
{
"carrier": "UA",
"flights": [
{ "airline": "UA", "from": "ORD", "to": "DXB", "price": 148.20 }
]
}Example request and response. Carrier codes filter the search; the full reference is unlocked with your API key.
United Airlines at a glance
- Founding member of Star Alliance
- Hubs at Chicago, Denver, Houston, Newark, San Francisco, Los Angeles and Washington
- Polaris is the long-haul business class cabin
- Broad transatlantic and transpacific network from the United States
United Airlines (UA) questions
United Airlines' two-letter IATA airline code is UA, and its three-letter ICAO code is UAL. The IATA code is the one you see on tickets, timetables and booking screens.
United Airlines' ICAO code is UAL. ICAO codes are three letters and are used in air traffic control and flight planning, while the two-letter IATA code UA is used in ticketing and reservations.
Yes. On IATA.co you book United Airlines fares through the platform from a prepaid balance, so you do not need your own IATA accreditation. United Airlines fares appear in your results whenever our flight suppliers offer them for your route and dates.
It depends on what our flight suppliers return. Whenever United Airlines content — including NDC fares — is offered by a connected supplier for your route and dates, it appears in your UA search results and can be booked from your balance or through the flights API.
Send a flight search request with your route and dates. United Airlines fares appear in the response whenever our flight suppliers offer them, marked with the carrier code UA.
That depends on the fare you book. Change and refund conditions are part of the fare rules, which are shown before you confirm.
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