Airline Guide · North America
United Airlines (UA)
The third-largest US carrier and a founding member of Star Alliance, United operates one of the most extensive international networks of any North American airline.
UA airline facts
IATA Code
UA
ICAO Code
UAL
Callsign
United
Country
United States
Headquarters
Chicago
Region
North America
Alliance
Star Alliance
Founded
1926
United Airlines hubs
Primary airports where United Airlines concentrates operations and offers the most connections.
ORD · KORD
Chicago
O'Hare International Airport
DEN · KDEN
Denver
Denver International Airport
IAH · KIAH
Houston
George Bush Intercontinental Airport
EWR · KEWR
Newark
Newark Liberty International Airport
SFO · KSFO
San Francisco
San Francisco International Airport
IAD · KIAD
Washington
Washington Dulles International Airport
LAX · KLAX
Los Angeles
Los Angeles International Airport
Frequently asked: UA
Where is United Airlines based?
+
United Airlines (IATA: UA, ICAO: UAL) is headquartered in Chicago, United States. The airline was founded in 1926 and operates a fleet of approximately 870 aircraft.
What is United Airlines's IATA code?
+
The IATA code for United Airlines is UA. The ICAO code is UAL. The radio callsign used by air traffic control is "United".
Which alliance does United Airlines belong to?
+
United Airlines is a member of Star Alliance, which means passengers can earn and redeem frequent flyer miles with partner airlines, access partner lounges, and enjoy other alliance benefits.
What are United Airlines's primary hubs?
+
United Airlines operates primary hubs at ORD, DEN, IAH, EWR, SFO, IAD, LAX. These are the airports where the airline concentrates its operations and offers the most onward connections.
How many aircraft does United Airlines have?
+
United Airlines operates a fleet of approximately 870 aircraft. Fleet size and composition change frequently as airlines retire older aircraft and add new ones — check the airline's website for the current fleet.
When was United Airlines founded?
+
United Airlines was founded in 1926, making it one of the airlines with a long operational history from the early decades of commercial aviation.
Can I track United Airlines flights on TripDesk365?
+
Yes. TripDesk365 automatically imports United Airlines confirmation emails from your booking inbox and tracks flights in real time. Sign up free to get live status, delay alerts, and unified itinerary management.
Other Star Alliance airlines
Start tracking smarter.
365 days a year.
Free for 14 days. No credit card. Connect your booking inbox and watch your bookings appear on the calendar in seconds.