Delta is promoting a 20% bonus on American Express Membership Rewards transfers through October 17th. Registration is required before initating the transfer.
20% certainly isn’t enough to lure me into Delta transfers that I wouldn’t otherwise be making, I’d rather preserve the flexibility of my Amex points and they are far more value when transferred into other programs (such as ANA and Air Canada). Still, if you’re transferring to Delta anyway this is worth knowing about.
Unfortunately, the bonus can’t be used immediately for booking travel. Rather, you’ll still need to make your full transfers necessary to redeem an award, and the bonus will post after the end of the promotion period.