Chicago O'Hare · ORD · Question
What Airlines Fly Out of ORD? Complete Airline List
Expert answer updated for 2026, with official sources and links to detailed guides.
O'Hare International Airport (ORD) is served by 11+ airlines, offering flights to domestic and international destinations. ORD is a hub airport for United Airlines and American Airlines, which means extensive route networks and frequent flights from these carriers.
All Airlines at ORD
- United Airlines
- American Airlines
- Delta Air Lines
- Spirit Airlines
- Frontier Airlines
- Southwest Airlines
- British Airways
- Japan Airlines
- Lufthansa
- Turkish Airlines
- Air Canada
Which Terminal Is Each Airline At?
Airlines at ORD are spread across 4 terminal areas. To find exactly which terminal, gates, and TSA checkpoint your airline uses, use our Terminal Finder tool — just select ORD and your airline for instant results.
You can also see the full terminal-by-terminal breakdown in our ORD airline directory, which includes gate ranges and hub badges.
Hub Airlines at ORD
United Airlines uses ORD as a hub, operating the most flights and typically occupying dedicated terminal space. American Airlines uses ORD as a hub, operating the most flights and typically occupying dedicated terminal space. Hub passengers benefit from more flight options, better lounge access, and stronger frequent flyer earning at their hub airport.
For detailed guides on individual airlines including baggage fees, loyalty programs, and check-in tips, visit our airline directory.