American-JetBlue Alliance Breakup Upheld by Appeals Court

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.

In a unanimous decision, a three-judge panel on the 1st US Circuit Court of Appeals in Boston said Friday that the airline alliance harmed consumers by reducing their choices for flights from airports in the Northeast US including New York City.

“Presented with an arrangement that had many of the essential attributes of an agreement between two powerful competitors sharing revenues and divvying up highly concentrated markets, the district court conducted ...