Here is what Aer Lingus says about transferring vouchers: Voucher Terms & Conditions Vouchers can only be redeemed at aerlingus.com in respect of flights operated by Aer Lingus and cannot be redeemed for bookings that involve travel on flights operated by partner airlines. Vouchers cannot be redeemed through the Aer Lingus reservation offices, at airport ticket counters or at travel agents. Vouchers are valid for five years from the issue date. Vouchers can only be redeemed on aerlingus.com against the cost of Aer Lingus flights (including fares, taxes, charges and selected fees). Gift Vouchers are issued in amounts as specified at time of purchase in the following currencies: EUR, GBP, USD. Refund Vouchers are issued in the currency of your cancelled booking. Vouchers can only be redeemed against bookings in the currency of issue. In order to redeem a voucher the person whose name is on the voucher must be a member of the party being booked. Vouchers are transferable and this can be done via the Change Name function in Manage my Voucher on aerlingusvouchers.com. First name, surname, e-mail address and delivery date can be changed; all other items remain as per the original voucher. Vouchers cannot be redeemed as part of AerClub Travel Reward bookings. Vouchers may not be used for other products (e.g. car hire, hotels, travel insurance). Vouchers are not refundable and will not be redeemed or exchanged for cash. In the event a ticket or fee is eligible for refund, the amount redeemed will be returned to the voucher if a refund is requested. Vouchers are void if altered or obtained fraudulently. Aer Lingus reserves the right to cancel bookings or request alternate forms of payment if a fraudulently or improperly obtained voucher is redeemed at aerlingus.com. If the ticket price is greater than the value of the voucher, the difference may be paid with a credit card. Any credit remaining following redemption of the voucher may be used within the original validity period towards future flight purchases. Vouchers cannot be offset against bookings which have already been made. Vouchers cannot be applied towards change fees, or additional fare for reissued or partially used tickets. Vouchers may not be used towards the purchase of food or beverages on board. Vouchers cannot be used to make or confirm a Price Lock or Deposit booking. Vouchers cannot be used to make or confirm a Group booking.