Savings up to 80% are calculated from an unrestricted published airfare of major scheduled airlines commonly known as refundable tickets. Savings may vary based on availability, advance purchase, minimum stay, travel dates, and blackout dates. Savings may change without notice and other restrictions may apply. Most discounted fares are non-refundable and have restrictions on date and routing changes after ticketing and prior to travel. Savings up to 80% is 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.