JetBlue said the filing "misrepresents Blue Sky and twists the facts about how JetBlue and United plan to deliver for customers." JetBlue said the deal "does not include schedule coordination or revenue sharing. JetBlue and United will remain competitors as they each will continue to publish, price, and market flights independently under their own brand and flight numbers." United declined to comment. In March 2024, JetBlue and Spirit scrapped a $3.8 billion merger agreement after a U.S. judge blocked the deal on anti-competition concerns. Spirit also said that if the partnership is approved, American Airlines (NASDAQ: AAL ) and Delta Air Lines (NYSE: DAL ) "will almost certainly seek similar arrangements and smaller carriers may feel compelled to go along, creating an even more highly concentrated industry." American and Delta did not immediately comment.