Frontier Named North America’s Lowest-Emission Airline for 2025 by Cirium

DENVER – April 16, 2026 – Frontier Airlines ( Nasdaq: ULCC ), America’s Greenest Airline, was recognized as North America’s lowest-emission carrier in Cirium’s 2025 EmeraldSky Review, placing it in the Gold status tier reserved for the top five carriers globally. The annual review , released this month, analyzed emissions by airlines and found Frontier to have the lowest of all U.S. carriers.