Frontier Airlines says it is adding rewards perks, low ticket prices for 2025 summer season. How to get the deals this year.

The offer comes after Southwest announced last week that it would end its long-standing two-free checked bags policy for most passengers. The move is one of several major changes at the airline, from the addition of premium seating to seat assignments, and prompted pushback from some loyal flyers.

Frontier, which is going through its own overhaul to offer more premium perks, said it may even make the free bags permanent if enough people take advantage of the temporary deal.