Alaska 24-hour Cancellation Policy (AS)
Nearly all airlines follow the 24-hour cancellation policy, and Alaska is no different. It allows customers the luxury of cancelling their reservation without incurring any fees. But it's a good idea to know these things before you change your flight:
If the cancellation is made within 24 hours of the booking, there is no fee for travellers under the 24-hour cancellation policy.
Additionally, the scheduled departure of the flight must occur no less than seven days after the time of booking in order to receive a full refund.
A cancellation fee of USD 25 to USD 50 must be paid by the passenger if they submit a request for cancellation after the permitted time has passed.
Also visit : American Airlines 24-hour cancellation policy