How Do I Cancel My Flight with Alaska Airlines?

Canceling a flight with Alaska Airlines is simple and can be done online via their website or mobile app. The airline offers a flexible cancellation policy for most fares, excluding Basic Economy tickets, which are non-refundable. If you cancel within 24 hours of booking, you’ll receive a full refund. After that window, no change fees apply for Main Cabin or First Class tickets, although fare differences may be charged if rebooking. Always check your fare type before canceling to ensure you understand the refund options.

Source: https://www.tickersandtimbers.com/forum/general-discussion/policy-rules-3