Until December 31, 2010, get a 30% bonus when you transfer American Express Membership Rewards points to British Airways. No registration is needed (the ratio shows 1,300 BA = 1,000 Amex).While British Airways has a somewhat inflated award chart, there are some gems. I just booked a client on JFK-MIA-EZE roundtrip in business class for 80,000 BA miles (vs. 100k AA). With this promo, you’d only need 62,000 miles for that award- not a bad deal! British Airways also has upgrade, one-way and cash and miles awards.And as I wrote about here, the new British Airways first class cabin is absolutely fantastic.T&C- You must be enrolled in the British Airways Executive Club in order to participate in this offer; visit ba.com to enroll.- Minimum transfer of 1,000 Membership Rewards points into BA Miles.- Redeem for this exclusive onetime offer by December 31, 2010, to receive 30% bonus BA Miles. - Bonus BA Miles will be awarded with the original transfer. Enrollment in a participating Frequent Flyer program is required.- Allow up to 24 hours for transfer and bonus BA Miles to be awarded.For further details, please login at www.membershiprewards.com/terms or call 1-800-AXP-EARN (297-3276).Bonus ID is R796:0001.Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.