Most discounted fares are non-refundable and have restrictions on date and routing changes after ticketing and prior to travel.Savings may change without notice and other restrictions may apply. Savings are based on our research of popular routes on major scheduled airlines based on 21 days advance purchase. These savings are calculated off the unrestricted “Y” class airfares only. Savings may vary based on availability, advance purchase, minimum stay, travel dates, and blackout dates.