FRONTIER Miles is for those who are based in the Midwest or Denver flying within the U.S. Frontier Airlines serves major domestic airports such as those in Los Angeles, Atlanta, and Chicago as well as other destinations like Florida, South Dakota, and Montana. They also fly to Mexico and the Dominican Republic.
The EarlyReturns program give miles on airport to airport distance and these can be used for free flights, hotel stays, and car rentals. Miles can also be earned from staying with partner hotels as well as using the Frontier World MasterCard credit card.
If you’re flying to smaller domestic airports, Frontier does this a lot. Making your way up to Elite membership can be very beneficial as well. Unfortunately, the airline doesn’t fly as often as major carriers do, so flight schedules can be limited. Plus, the miles expire in six months’ time.