Generally, you cannot transfer a companion voucher (such as the British Airways Amex Companion Voucher) to another person to use independently. In 2026, the rules for these vouchers strictly state that the main account holder (the person who earned the voucher) must be one of the passengers on the booking. While you can choose anyone as your "companion"—a friend, family member, or even a colleague—the voucher itself is linked to your loyalty account and cannot be "gifted" or sold to someone else for a trip you aren't taking. If you have a British Airways Household Account, you have a bit more flexibility in who can be your companion, but the requirement for the voucher holder to be on the plane remains non-negotiable. Some other airlines or credit card issuers may offer "transferable" flight credits, but "Companion Vouchers" are specifically designed as a reward for the primary cardholder's loyalty and spend, making them non-transferable in the traditional sense. If you cannot travel, the voucher typically goes to waste once it expires, as there is no legal way to "re-assign" the primary traveler's seat to a third party.