As an AAdvantage member, you'll earn miles every time you buy an eligible ticket and fly on American or any of more than 40 airline participants. You'll earn extra miles if you're travelling on a Business or First Class ticket.
American Airlines AAdvantage members can earn and redeem miles, and earn tier status credit, on all eligible flights except each other's routes between the United States and the United Kingdom. (Fare restrictions do apply.)
Effective March 1, 2008, British Airways flights no longer earn elite status bonus miles. American Airlines codeshare flights (with an "AA" flight number) operated by British Airways will continue to earn elite-status bonus miles.
Effective November 1, 2008, Aer Lingus will no longer be a participant in the AAdvantage program.
All award travel must be completed by October 31, 2009.