American Airlines Sues Chicago Over O’Hare Gates for United

American Airlines planes at O'Hare International Airport (ORD) in Chicago, Illinois. — American Airlines planes at O'Hare International Airport (ORD) in Chicago, Illinois.
Photographer: Joshua Lott/Bloomberg

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By Robert Burnson and Mary Schlangenstein

May 2, 2025 at 10:05 PM EDT

Updated on

May 3, 2025 at 11:33 AM EDT

American Airlines Group Inc. sued the city of Chicago in a fight with rival United Airlines Holding Inc. over valuable gate space at O’Hare International Airport.

The airport is a hub for both airlines, making it the only dual-hub airport in the US. But American claims that United wants to elbow it out so it can become the “sole hub carrier” of the fourth-busiest airport in the world.