- 50% bonus to British Airways before 7/31: You don't need to register, just log into your Amex account, link a BA Executive Club account, and you will see 1,000 points = 1,500 miles.
- 67% bonus to Delta SkyMiles before 9/30: You need to register here. How it works is a little tricky: for every 50K points transferred, you will get 20K points back later on. Thus 30K points = 50K miles. What is good is that unlike the current 50% to Delta promotion, this new promotion is not limited to first time MR-Delta transferring members. However, some people might find the 50% promotion better since it also gives you 25K MQMs (Medallion Qualifying Miles).