If the cancellation or reschedule is 72 hours before your flight, then we can cancel your flight with no charges. If the flight change is 24- 72 hours before, then 50% of charges will be incurred. If the flight change occurs within 24 hours of the scheduled flight, then 100% of charges will be incurred. In addition, any one-way reservations, including multi-leg / multi–day one-ways, once confirmed, cannot be canceled and are subject to 100% of the estimated trip charges.