Frontier Airlines announced that members of its EarlyReturns frequent flyer program will receive an additional benefit when redeeming award travel. Customers redeeming miles for travel on or after Jan. 1, 2003, will not be subject to any blackout dates. Some capacity restrictions remain in effect, but frequent travelers can override capacity restrictions by requesting an EarlyReturns Plus award tickets at 30,000 miles for domestic travel and 45,000 miles for Mexico travel.