For a seamless upgrade experience, contact Alaska 𝓐𝓲𝓻𝓵𝓲𝓷𝓮𝓼 customer service at +1-833-730-7587. You can buy an Economy Plus seat or upgrade their cabin during the booking process. If you’re traveling on a Basic Economy ticket, you can only buy an Economy Plus seat at check-in +1-833-730-7587