フロンティア航空
Frontier Miles is the frequent-flyer program for Frontier Airlines, replacing the EarlyReturns program, which existed from 2003 to 2018. Frontier Miles can be earned by flying Frontier Airlines, using the Frontier Airlines World MasterCard, or by spending at partner hotels, car rental chains, cruises, and merchants. Frontier Miles can be redeemed for flights, magazine subscriptions, and car rentals. Since February 2019, hotel stays are also part of the redemption options.