American is offering progressively more bonus miles for each of your first five roundtrips booked between July 18 and September 15 for travel between September 4 and November 15.

First you need to register for Bourne Legacy co-branded “Welcome To The Program Sweepstakes” by August 31.

You have to watch a couple of videos, listen to an audio clip, and click a button to reveal a marketing message in order to be permitted to register. (Or you could probably just click here, which is the page you reach after jumping through the hoops.)

Then you have to register for the promo itself by September 15 (and only travel after registration will count towards the bonus).

Note that N, O and Q fares are not eligible to earn the bonus miles. These are the lowest fare classes, though I haven’t seen too many flights with these fares available on my own travels in quite awhile. Heh.

They’re looking to goose Fall travel, and the promo ends before the busy holiday time. I expect I won’t have much difficulty earning the full bonus, even though it falls during my own lightest travel period. Though I don’t yet have any trips booked that far out, I’m disappointed though not surprised to see previously booked travel excluded from the promotion.