Frontier Airlines has picked up eight routes previously flown by Spirit Airlines, adding service across major metro pairs including Boston, Detroit, Dallas, and Las Vegas since Spirit ceased operations on May 2 after failing to secure emergency funding. Frontier is promoting the expansion with introductory fares starting at $39 and has offered discounted “rescue fares” specifically aimed at stranded former Spirit customers.
The route additions are part of a broader rebrand the airline is calling “The New Frontier,” which includes UpFront Plus seating with extra legroom and a guaranteed empty middle seat, features aimed at travelers who previously avoided ultra-low-cost carriers over comfort concerns. Frontier says it plans to introduce First Class seating later in 2026, combining more space and comfort with pricing still meant to undercut network carriers.
Frontier’s leadership has framed the push as an opportunity created by Spirit’s collapse and broader capacity cuts across the budget segment, projecting the added routes and market share gains could lift revenue per available seat mile by 3% to 5%. The airline has also been adding routes beyond the former Spirit network, including new service into Spirit’s old Florida hub with fares starting around $29.
Travelers who previously booked with Spirit and are still working through refunds or rebooking should check Frontier’s rescue fare program directly, since eligibility and discount levels vary by route and original booking date. Those weighing Frontier’s new premium options for the first time should compare UpFront Plus pricing against standard economy before assuming it matches legacy carrier comfort.
Sources: Frontier Airlines Newsroom, AirlineGeeks
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