https://www.mybestcouponcodes.com/american-airlines-flights-promo-codes-2021/ American Airlines Promo Codes 2021. 202135% off (2 days ago) 35% off 35% off The American Airlines promo codes currently available end sometime between 06/23/2021 and 06/23/2021. However, some American Airlines deals don't have a definite end date, so it's possible the promo code will be active until American Airlines runs out of inventory for the promotional item.