Alaska Airlines Mileage Plan members flying qualifying British Airways nonstop service between Seattle and London Heathrow can earn double miles on travel through June 15, 2014. Members must register for the promotion at http://insideflyerus.wpengine.com/link/?11218 before taking their first flight to get the bonus miles. Flights must be marketed and operated by British Airways and must be flown in A, B, C, D, E, F, G, H, I, J, K, L, M, O, Q, R, S, T, V, W or Y class of service.

Alaska Mileage Plan members can also get double miles for flights to and from Seattle and Anchorage, San Diego, Las Vegas, San Francisco, Los Angeles, San Jose, Oakland or Vancouver, Canada until the end of the year. Travel must be between June 1 and Dec. 31, 2014 and registration prior to your first flight is required (which means, if you’ve already made reservations for any of these routes, you’ll get the bonus miles as long as you register before you fly). The bonus is for nonstop flights only and on flights marketed and operated by Alaska Airlines only. Visit http://insideflyerus.wpengine.com/link/?11332 to register for the promotion.