From now until October 31, 2014, you can earn double redeemable miles and double Medallion Qualifying Miles on select routes to and from Seattle marketed and operated by Delta and Delta Connection carriers. You'll only earn double MQM on flights booked after registering for the promotion.
Eligible flights are those between Seattle and:
- Los Angeles
- Las Vegas
- San Francisco
This promotion is running through most of next year, so whether you plan to immediately take advantage of the promotion or not, register now, before you forget.