Delta Air Lines is offering double redeemable miles on non-stop flights to and from Hawaii from the following Delta gateways:
- Los Angeles
- San Francisco
- Minneapolis-St. Paul
- Salt Lake City
No love for Atlanta or Seattle.
Unfortunately, tickets already booked are not eligible for bonus miles: only tickets booked between September 14 and November 01 qualify. You don’t have to register before you travel or book, but be sure to register before November 01.
More details and registration here.
Don’t forget that you can earn Medallion qualifying miles and RDMs by staying at Hilton hotels (or take advantage of Starwood’s 25,000 mile United miles offer).