As of 2026, a Companion Pass itself is not transferable from one person to another. Whether you are using the Southwest Airlines Companion Pass or a Delta SkyMiles Companion Certificate, the "earned" status belongs strictly to the individual account holder. On Southwest, you can change your designated companion up to three times per calendar year, but you cannot give the entire pass to a spouse or friend to use without you. For Delta Companion Certificates, the certificate is "transferable" in the sense that the primary account holder can book a trip for any two people to fly together (e.g., booking for a sister and her husband), but the account holder must be the one to initiate the booking through their own profile. Once a ticket is issued in a specific name, it is completely non-transferable. You cannot "sell" or "barter" these passes, and attempting to do so in 2026 can lead to the permanent closure of your loyalty account and the voiding of all associated travel vouchers.