Can't believe this hasn't been posted yet.
Earn up to 10,000 Bonus Miles on Select Routes
Fly 3 round trips on any of the nonstop routes listed below, and receive 10,000 Mileage Plan™ Bonus Miles.
Between Seattle and:
Boston
Las Vegas
Los Angeles
Philadelphia
San Francisco
Between Portland and:
Atlanta
Chicago
Dallas
Las Vegas
Los Angeles
San Francisco
Or ... fly 2 round trips and receive 5,000 Bonus Miles.
To earn Bonus Miles, simply register your Mileage Plan™ number below prior to your first qualifying flight, and travel between August 20, 2013, and November 12, 2013.
Not a Mileage Plan™ member? Enroll online today.
Terms & Conditions:
Registration is required prior to your first qualifying flight. Bonus Miles offer is valid only on qualifying paid nonstop flights between Seattle(SEA) and Boston(BOS), Las Vegas(LAS), Los Angeles(LAX), Philadelphia(PHL), or San Francisco (SFO), and between Portland(PDX) and Atlanta(ATL), Chicago(ORD), Dallas(DFW), Las Vegas(LAS), Los Angeles(LAX), or San Francisco(SFO). Flights must be marketed and operated by Alaska Airlines. Flight miles must be credited to your Alaska Airlines Mileage Plan™ account in order to earn Bonus Miles. 10,000 Bonus Miles will be awarded for completing 6 (six) qualifying flights. 5,000 Bonus Miles will be awarded for completing 4 (four) qualifying flights. All travel must be completed by November 12, 2013. Not valid on free or award travel. Bonus Miles do not count towards elite status. Bonus Miles will be posted 2 to 4 weeks after the end of the promotional period. All terms and conditions of the Mileage Plan™ program apply. Offer subject to change without notice.