What is the customer service number for alaska airlines? Alaska Airlines Customer Service Phone Number. The Customer Service Phone Number of Alaska Airlines is: +1 206-433-3200 / +1 800-654-5669. Alaska Airlines is an American airline. The airline was founded by Linious "Mac" McGee in 1932 as McGee Airways. It is based in Seattle in Washington D.C. in the United States.What is the toll free number for alaska airlines? Alaska Airlines Phone Number. Contact Number (Toll Free): 1-800-426-0333. Website: http://www.alaskaair.com. Address: 19300 International Blvd. Seattle, Washington 98168. United States. IATA Code: AS / 027.What is alaska airlines 800 number? The address of Alaska Airlines Headquarters is P.O. Box 68900, Seattle, Washington 98168, United State of America.