The online cancel & refund facility is currently available only for JetPrivilege members. Refund facility is open only for bookings done on or later than February 12, 2007. The retrieved itinerary will display only the unutilised segments in your booking. If the status of your booking is either checked-in, used or refunded, the same will not be displayed. Once we receive your refund request, we will process the refund within 03 working days. Should there be any cancellation / refund fees, we will deduct the relevant amount and the balance will be refunded to the same credit / debit card used to purchase the original itinerary. Cancellation & refund charges (if any) would depend upon the JetPrivilege Tier and will be applied based on the fare condition. Refunds done at a Jet Airways counter against eTickets will only be given or processed against valid photo identification. Refund will only be processed against the itinerary receipt and valid photo identification and the amount due after deducting the applicable charges will be credited back to the Credit / Debit Card account.

for further details click here: http://www.jetairways.com/EN/QA/ContactUs/ContactUs.aspx