Checking ex-JFK the weekend before Thanksgiving, there are tons of cities available for $1800 - $1900 (VIE, CPH, MXP, AMS, etc). Best prices seem to involve IB in one direction, BA or AA in the other.
To stay on BA and get AARP/CARDOFFERU discounts, looks like you need to stay in the UK. I just booked JFK-LHR in BA Club World, 21-23 Nov., for $1449 ai. Yay!