Until recently, We used to get 200 Avios for every 250 Membership Rewards transferred, which is effectively 0.8 Avios for every Membership Reward point. Now, Amex improved the conversion ratio to 1:1 and on top of that added a 40% transfer bonus which is valid through Sep 17, 2017.
You can now get 350 Avios for every 250 Membership Reward points transferred. This is an overall 75% improvement than what it used to be until recently.
British Airways Avios are great for short haul flights. Award flights start at 7,500 Avios for flights originating/ending in North America and award flights start at 4,500 Avios for other regions.
There are several short haul routes with in Asia where you can get award flights starting at 4,500 Avios. For example, you book Chennai to Colombo for 4,500 Avios..
Here is the distance based award chart.
Through Sep 17, 2017 you can get 40% transfer bonus when you transfer Amex Membership Rewards to British Airways Executive club.
With this bonus, you get 350 Avios for every 250 Membership Reward points.
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