If Alaska Airlines cancels customer tickets within 24 hours, it will allow for free cancellation and full refund.
Non-refundable ticket: If you have booked non-refundable flights, neither part of the price nor the fees will be refunded.
The refund will be made in lieu of money, which may be booked on another flight in the future.
The cancellation fee depends on the type of booking you have with Alaska Airlines. Between $ 100 and $ 400 per cancellation fee.
However if the flight is canceled or delayed, you can definitely ask for a refund.
Alaska Airlines cancelation policy allows you to cancel or modify bookings from the US or from the US within 24 hours at no extra charge. However, after payment is received and the ticket is issued, the standard fare rules apply.

https://www.cancellation-policy.com/alaska-airlines-cancellation-policy