Both carriers claim airport as a hub—and fight via snarky billboards, social-media sniping and a lawsuit.

American Airlines is now suing the City of Chicago, arguing a plan to hand over roughly six O’Hare gates to archrival United ...

American Airlines plans to add flights from Chicago to three Mexican beach destinations: Cancún, Los Cabos and Puerto ...

Business travel to the U.S. fell 9% in April as companies and workers grappled with economic uncertainty and anger over the ...

Chicago Bulls’ Michael Jordan, wearing his old No. 23 jersey, gives directions from the court during a playoff game in ...

CHICAGO: United Airlines (UAL.O), opens new tab is facing a financial hit and potential long-term reputational harm as flight ...

American may be fighting an uphill battle at O'Hare. United is based out of Chicago and considers itself to be the official ...

“Without that, you can’t compete. With that, you can dominate.” American Airlines is now suing the city of Chicago, arguing that a plan to hand over roughly six O’Hare gates to archrival ...