American AAdvantage members can earn up to 105,000 bonus miles on nonstop roundtrip transatlantic flights on American Airlines, British Airways and Iberia through Dec. 31, 2011. The bonus miles are only offered on first class, business class and full-fare coach class (F, A, J, R, D, I, Y, B or H). Fly one roundtrip flight between the U.S. and Europe and earn 25,000 bonus miles, fly a second roundtrip flight and earn 35,000 bonus miles and a third trip will earn 45,000 bonus miles, for a total of 105,000 bonus miles. Registration prior to travel is required at http://www.aa.com/offers using promotion code EUR11. After each third roundtrip, you’ll earn an additional 45,000 bonus miles and the number of miles you can earn is not capped. Flights on codeshare partners American Airlines, British Airways and Iberia are not eligible for the bonus. The offer only applies to AAdvantage members who are U.S. residents but British Airways Executive Club has a similar promotion for residents of the U.S. and Canada. Visit http://www.ba.com/multiplier to register and earn 105,000 Avios points.