Alaska Airlines once again extends their amazing offer of offering a 50% bonus on elite qualified miles for flying on Alaska. All Mileage Plan members are eligible for this offer, which does not require registration. This promotion will end September 30, 2021.Details of the offerAlaska Airlines offers a 50% bonus elite qualifying mileage plan miles for all passengers. Details available until Sep 30, 21These are just a few more Mileage Plan deals you should check out:500 bonus Mileage Plan Miles for all Hertz rentals in the U.S., Puerto Rico and Canada. Online booking available. Full detailsTriple Mileage Plan Miles for rentals of three or more days at any Thrifty location worldwide Online booking available. Full detailsAlaska Airlines will match your Elite Status Match status for any earned flying with selected North American airlines for 90 Days. To retain your status, you must complete all flight requirements. Register online (Registration required).Only for residents of Canada and the U.S.Only residents of Canada and the U.S. need to register.