The 1st U.S. Circuit Court of Appeals affirmed a trial judge's ruling blocking the airlines' "Northeast Alliance."

A partnership between American Airlines Group Inc. and JetBlue Airways Corp. violated US antitrust law, an appeals court ruled, affirming a lower court decision to end the alliance.

The original premise of the alliance was to allow American and JetBlue to coordinate schedules and pool revenue on flights out of New York and Boston. The first ruling was made by U.S. District Judge Leo Sorokin. A lawsuit was brought by the Department of Justice and six state to block the alliance.

In May 2023 a federal judge rejected a partnership between American and JetBlue. Today, its lost value is hurting both airlines. But the partnership is not quite dead.

A U.S. appeals court on Friday rejected a bid by American Airlines to overturn a judge's decision that sided with the U.S. Department of Justice and declared that its now-scrapped U.S. Northeast partnership with JetBlue Airways was anticompetitive.

American Airlines lost its appeal to revive an alliance with JetBlue that collapsed after lawsuits succeeded in declaring it anticompetitive, a judge ruled

An effort by the two carriers to work together to compete with Delta and United in the Northeast has been left stalled on the tarmac.