Frontier Airlines is an American ultra-low-cost carrier founded in 1994 and headquartered in Denver, Colorado. Listed on NASDAQ under the ticker ULCC, the airline reported revenue of $3.7 billion in 2025 and carries about 33 million passengers a year across more than 440 nonstop routes and over 100 airports in the United States, Mexico and the Caribbean. Its business model rests on low base fares paired with optional, individually purchasable services - a policy the company terms "Low Fares Done Right" - and it employs more than 5,000 people, referred to internally as team members.
The operation is built around an all-Airbus A320neo family fleet of more than 100 aircraft, the largest A320neo fleet in the Americas and, by the company's account, the most fuel-efficient fleet among major U.S. carriers. High-density seating configurations, weight-saving initiatives and Pratt & Whitney GTF engines underpin the cost and fuel-efficiency strategy. The airline operates up to 700 flights a day and continues to expand its route network.
Technical work at Frontier spans several domains: aviation operations, fuel efficiency and weight-saving programmes, high-density seating configuration, engine technology, loyalty programme technology through its FRONTIER Miles scheme, and route network optimization. The company describes itself as "America's greenest airline" and emphasises environmental sustainability alongside customer-friendly service and continued network growth.
