In a statement, Frontier said the deal “would provide meaningful value to Spirit financial stakeholders” and create a “stronger low-cost carrier” that would rescue Spirit from bankruptcy.
Spirit has already rejected the latest offer, contending in a letter sent to Frontier in a regulatory filing that it’s “far short” of what its shareholders would expect and is less money than the previous offer.

Both airlines have announced upgrades in recent months, trying to capture market shares from the major carriers.
Frontier is adding “first-class style” seats later this year, and Spirit launched premium “Go Big” bundles, enabling passengers to pay extra for tickets that include items such as snacks, drinks, free bags and priority check-in, along with wider seats.
The two airlines originally intended to merge in 2022, but JetBlue offered Spirit more money and the deal was scrapped. However, Spirit’s merger with JetBlue was blocked by a federal judge.