Valid for 12 months from date of winning bid. Open tickets may not be issued - a specific date of departure and return must be confirmed for tickets to be issued. Service to Alaska is seasonal. Blackout dates do apply and tickets are based on availability. JDRF encourages winner to contact JDRF as soon as possible to make reservations. Certificate is not redeemable for cash and is void if sold for cash or other consideration. Shipping and handing charges may apply.