Citibank is running a 25% bonus on ThankYou Rewards transfers to JetBlue through October 25, 2017.
And of course JetBlue is unique among Citi partners in that it’s even a transfer partner for the ThankYou Preferred card (normally 1000 ThankYou points to 500 JetBlue TrueBlue points, with this promo yielding 625 points).