Delta is offering double redeemable miles and double Medallion Qualifying Miles (MQMs) for flights to or from Seattle for Washington State residents through Dec. 31, 2014.

This offer is available to new or existing SkyMiles members who register online, book and fly by Dec. 31, 2014.

Only residents of the State of Washington, as determined by the address on file for your SkyMiles account, are eligible for this promotion. To be eligible, travel must originate or terminate in Seattle, and only nonstop segments to or from Seattle qualify for the promotion.

There is no limit to the number of bonus miles earned through this promotion.

Visit HERE to learn more and register for the promotion.