• Will I still earn AA miles if I use a discount or promotion code?

In general, the answer is yes. Use of a discount code does not affect AA mileage earning. As long as your ticket books into an eligible fare class, you will receive AA miles and points according to the normal calculations. Further, while the use of a companion code is officially supposed to disqualify the companion from earning any AA mileage, this has historically not been the case, although there is no recent data on this following the termination of the TrAAvelPerks program in 2008. However, use of a discount code will often disqualify a ticket from earning Business ExtrAA points.

FT: TrAAvel Perks (discontinued 2008)