Frontier Airlines is offering a “fly three” bonus offer: Between Nov. 1, 2006 and Feb. 28, Frontier EarlyReturns members who fly three roundtrips between Los Angeles and San Francisco will earn 4,500 EarlyReturns bonus miles. With the bonus, the total earnings for the three flights will be 7,500 miles. And during the same promotional period, members can redeem 7,500 miles for an award ticket between the same two cities. The award trip must be completed by May 31. Individual accounts can earn a maximum of 18,000 bonus miles during the length of this promotion and members do not have to register for the promotion online before flying — provide your EarlyReturns number upon reservation. For more information visit http://insideflyerus.wpengine.com/link/?62