Amex last week restored Membership Rewards transfers to British Airways Executive Club to a 1:1 ratio and now has launched a further 40% transfer bonus good to 9/17/17. Bonus valid for Iberia Avios as well.
How to Use Avios
Avios were great for short-haul US flights until American Airlines became ultra-stingy on saver award space.
Awards on British Airways itself involve comical levels of cash surcharges, except the fixed-fee intra-Europe rates are somewhat tolerable.
Look for short, expensive in cash flights on partners such as AirBerlin, Cathay Pacific, Comair (BA in southern Africa), JAL, LATAM, S7, Sri Lankan, and Qantas that are not assessed massive surcharges. Upgraded Points has 40 Ways to Redeem British Airways Avios to kickstart your brainstorm.
If you transferred last week on the 1:1 news you are probably out of luck. Amex is lately taking a dim view to complainers. You can watch reports from people who feel wronged and will try to pester Amex into submission.