Frontier Airlines

Frontier Airlines is an ultra-low-cost carrier (ULCC) headquartered in Denver, Colorado, operating a rapidly expanding network of point-to-point routes across the United States, Mexico, and the Caribbean. Like its ULCC competitor Spirit Airlines, Frontier operates on an unbundled pricing model where the base fare covers only the seat and a personal item that fits under the seat in front of you — with all other services including carry-on bags, checked bags, seat selection, and snacks charged separately. Frontier is immediately recognizable for its distinctive aircraft livery featuring large tail art depicting various animals and environmental scenes, with each aircraft named after the animal depicted on its tail.

This "eco-friendly" branding connects to Frontier's self-positioning as "America's Greenest Airline" — a claim based on its modern, fuel-efficient Airbus A320neo family fleet. The airline has a strong presence in Denver and operates numerous routes between mid-sized US cities that are often underserved by legacy carriers. Frontier's FRONTIER Miles loyalty program allows members to earn miles on flights and redeem them for award travel.

The airline offers a subscription-based "the works" bundle that includes carry-on and checked bags, seat selection, and other perks at a bundled price that can represent significant savings for passengers who need these services.