Airlines will provide you with a credit for the difference in fare, which can be used towards future travel on Alaska Airlines. It is important to note that if you purchased your ticket through a third-party website or travel agent, you will need to contact them directly to make any changes to your reservation.Alaska Airlines Change Flight allows for changes to be made to a flight reservation online or over the phone. If you need to modify your flight, you must do so at least 60 minutes before the scheduled departure of your flight. If you have a Saver fare, you will not be able to make any changes to your ticket after the initial 24-hour cancellation period has passed.