Frontier Airlines is attempting for a second time to merge with the now bankrupt Spirit Airlines, which declared bankruptcy late last year as budget airlines struggle.

Frontier Airlines said Wednesday it has again proposed combining with Spirit Airlines, which is in bankruptcy.

Frontier is making an offer to acquire the beleaguered Spirit Airlines, which filed for bankruptcy in November.

The biggest surprise of the 2025 airline industry is that its top stock market performer comes from low cost carrier Frontier Airlines.

Frontier says a merger would be a better path out of bankruptcy for Spirit, as budget carriers struggle with high costs and competition.

Three U.S. senators said they want Frontier Airlines and Spirit Airlines to disclose whether they are manipulating seat fees by using customers' personal information to charge different fees to passengers on the same flight.

Spirit Airlines on Wednesday said it expects to exit bankruptcy in the first quarter and rejected a merger with rival Frontier Group, saying it was not favorable for the low-cost carrier. It received a proposal from Frontier earlier this month,