The AARP discount is fantastic and well worth the investment (not just for the BA discount I might add). The Chase discount is stackable with the AARP offer and combined with a recent BA fare sale, I was able to purchase CW round trip tickets (MCO-AMS) for around $1550. A very little known (relatively) offer that has a big benefit. As other posters mentioned, you do not have to be 50 to enroll.......