In the wake of a similar lucrative offer from United, and the announcement that Southwest is returning to Denver, American AAdvantage is offering up to 36,000 bonus miles for flying eight roundtrips to/from Denver or to/from any destination in California, Oregon or Washington through Feb. 15, 2006.

Members can earn 1,000 bonus miles for the first trip, 2,000 for the second, and up to 8,000 for the eighth trip for a grand total of 36,000 miles. Registration is required.

Denver Bonus promo code is AADEN; West Coast Bonus promo code is AAWCB.