Frontier (ULCC)’s CEO is Racing to Claim the Market Spirit Airlines Left Behind

After Barry Biffle's sudden departure in December 2025, Frontier Group Holdings (ULCC) CEO Jimmy Dempsey took the reins in January 2026. The airline, which had been competing with Spirit Airlines, now seeks to fill the void left by the latter's bankruptcy. Spirit fully ceased operations on May 2, 2026, after two bankruptcies in just two years. Frontier had previously shared more than 100 routes with Spirit, the largest overlap among U.S. airlines.

Frontier rapidly expanded into Spirit's strongholds, including Orlando, Fort Lauderdale, Dallas-Fort Worth, Detroit, and Las Vegas, increasing its capacity by 23% year over year. The company is also considering purchasing Spirit's liquidated assets, such as Airbus A320 aircraft and scarce slot-controlled airport real estate, including LaGuardia slots and gates at Chicago O'Hare and Detroit.

The airline has introduced new revenue initiatives, including onboard Wi-Fi and First Class seating, alongside its traditional ultra-low-fare model. Spirit's exit has led to a surge in demand for Frontier. The second-quarter revenue reached a record $1.3 billion, a 38% year-over-year increase, with revenue per available seat mile (RASM) growing by 28% and surpassing Frontier's initial guidance.

Management anticipates RASM to increase by more than 20% in the third quarter, marking the third consecutive quarter of double-digit growth.

Frontier can capture Spirit's former market without acquiring the airline by selectively acquiring valuable assets, aircraft, and scarce airport slots through the bankruptcy liquidation. The company is prioritizing disciplined growth, with management emphasizing a measured approach to new routes and asset purchases. Higher revenue management is driving the RASM improvement, rather than capacity growth alone.

Despite record revenue, Frontier's net loss widened to $90 million in the fourth quarter of 2025, more than tripling year over year to $362 million in the first half of 2026. Strong revenue growth has not translated into profitability, and higher fuel costs could erase some of Frontier's pricing gains. Competitors, including JetBlue, may weaken Frontier's pricing advantage as they return to Spirit's former customer base.

Frontier must execute carefully to transform the turnaround into sustained profits, overcoming high fuel costs, ongoing competition, and existing losses.