Frontier Airlines Toughens EarlyReturns Program

DENVER (CBS4) - Denver-based Frontier Airlines is slashing benefits in its EarlyReturns frequent flyer program.

Most airlines traditionally allow customers to keep miles for 18 months or more without expiring. But starting in March, with Frontier's EarlyReturns customers will have to fly again within six months, or use a Frontier credit card, or the accumulated miles go away.

Frontier announced the cost-saving move on Wednesday. The changes take effect March 7.

United Airlines and American Airlines give their frequent flyer customers 18 months to use their miles. Delta and Southwest don't have expiration dates set up as part of their flyer programs.