JetBlue Airways and United Airlines have been negotiating a partnership, three industry sources familiar with the matter told Reuters.The New York-based airline has been seeking partnerships after a federal judge blocked its so-called Northeast Alliance with American Airlines in 2023.

JetBlue Airways (NASDAQ: NASDAQ:JBLU) and United Airlines (NASDAQ: NASDAQ:UAL) have been in talks to form a partnership, according to three industry sources familiar with the discussions, Reuters reported.

The upgrade of the Polaris lounge at O’Hare is United’s latest salvo in the broader arms race for premium passengers that’s playing out across the commercial aviation industry. More customers are seeking, and paying for, perks ranging from extra legroom to lounge access.