Alaska Airlines Change Flight policy allows passengers to modify their travel plans. Most tickets can be changed online or by calling 1-888-927-0182. Changes within 24 hours of booking are free. For non-refundable tickets, a fee applies plus any fare difference. No fees are charged for same-day changes if the same fare class is available. Mileage Plan members with elite status may enjoy additional flexibility. Policies may vary based on fare type and destination.