Alaska Airlines MileagePlan members can earn double elite qualifying miles on nonstop flights from Seattle to Detroit between Sept. 2, 2014 and Oct. 31, 2014. Members must register for the promotion prior to travel and before July 15, 2014 at http://insideflyerus.wpengine.com/link/?11482

Additionally, double mile offers are available for travel this summer and fall from Seattle; however, these double mile offers do not count towards elite qualifying status. Members can earn double miles for nonstop travel between Seattle and Fairbanks or Juneau through Sept. 1, 2014 when you register prior to your flight at http://insideflyerus.wpengine.com/link/?11486 Double miles are also available on nonstop flights between Seattle and Anchorage, Las Vegas, Los Angeles, Oakland, San Diego, San Francisco, San Jose or Vancouver through Dec. 31, 2014. Members must register for the promotion prior to travel at http://insideflyerus.wpengine.com/link/?11487