The lawsuit claims the city of Chicago has breached the Airline Use and Lease Agreement and would give United Airlines five more gates, while taking away four gates from American Airlines.

JetBlue is reportedly discussing a potential partnership with United Airlines after its planned Northeast Alliance with American Airlines failed. The Department of Justice sued to block the alliance between the two airlines in 2021, characterizing it as anti-competitive.

American Airlines will add more winter flights out of Chicago O’Hare to warm destinations like Mexico, the Caribbean, and Central America.