Here is the latest Hilton HHonors Airline bonus offer. There are quite a few of these airline offers now for Hilton stays, all of which you can find here.
Here is the offer as it will appear on FFB’s Miles & More Bonus Miles page:
Earn up to Quadruple Miles & More Miles when you register and stay
within the Hilton Worldwide portfolio of brands. Earn double miles for
your second stay, triple miles with your third stay and quadruple miles
with four stays or more over the promotion period. Full Details, Online Registration and Booking (Registration is required) Until Jun 30, 14
Can’t make use of this promotion? Be sure to visit our Miles & More Bonus Miles page for dozens of other bonuses!