We will keep updating recent points transfer bonus offers in this post.
(2019.6 Update) MR -> Marriott Bonvoy up to 50% Bonus (targeted)
Some people also get targeted to a MR->Marriott transfer bonus. It is up to 50% bonus. No upper limit, and it seems no expiration date as well. The original ratio is 1:1, so with 50% bonus the ratio will be 1:1.5. We value MR points at 1.6 c/p and Marriott 0.7 c/p, therefore it is still not a very good transfer ratio. But if you just need a little more Marriott points to accomplish a redemption, you may consider it.
(2019.6 Update) MR -> British Airways Avios up to 50% Bonus (targeted)
Today American Express is offering some members a 50% bonus when transferring their membership rewards points to their BA avios account. It is highly targeted. You need to log in to your Amex account to see if you’re targeted.
Recalling that British Airways just announced the devaluation on partner airlines, the 50% bonus is not as appealing as before devaluation, but it can still offset the devalued difference. MR-> Avios transfer is instant for most of the time so you can search the route first and transfer the points once you’ve decided. Anyway, it’s a good offer.
(2019.6 Update) MR -> JetBlue TrueBlue up to 50% Bonus (targeted)
Today American Express is also offering some members a 50% bonus when transferring their membership rewards points to their JetBlue TrueBlue account.
TrueBlue points are 1.3cpp. Under the bonus, 250 MR can get you 300 TrueBlue points, which is a 1.2 ratio. In total, you can get 1.2*1.3=1.56cpp by transferring your MR points to JetBlue.