Home Slickdeals Costco Members: $500 Alaska Airlines eCertificate $450 (Email Delivery) (LIVE 08/14/2023) Slickdeals Costco Members: $500 Alaska Airlines eCertificate $450 (Email Delivery) (LIVE 08/14/2023) By ARCOM - 15 August 2023 27 0 SHARE Facebook Twitter Go to the deal page: Costco Members: $500 Alaska Airlines eCertificate $450 (Email Delivery) (LIVE 08/14/2023)