In an air travel shakeup, two major airlines announced a new collaboration in May. Dubbed "Blue Sky," United and JetBlue are partnering up to give frequent fliers of either airline's loyalty program more ways to earn and use miles, along with more ways to enjoy the perks of any airline status you've earned.
Before it could be rolled out, however, Spirit Airlines urged the Department of Transportation (DOT) to block the deal, saying it "raises serious competition and public interest questions" in a complaint filed with DOT in June.
