How long is my Companion Voucher valid for and when must I travel?

BA American Express Credit Card Companion Vouchers are valid for 12 months from the date of issue. BA American Express Premium Plus Companion Vouchers are valid for 24 months from the date of issue. Reward seats can be booked up to 355 days in advance. The outbound flight must depart on or before the voucher expiry date. Return travel may take place after the voucher expiry date where permitted by the voucher terms.