Yes, you can change your designated companion on Southwest, but there are a few 2026 "fine print" rules to keep in mind. You are allowed to change your companion up to three times per calendar year. To do this, you must first cancel any existing reservations you have for your current companion. Once those flights are cleared, you can change the name via the "My Account" section on the Southwest website or app. It typically takes about 24–48 hours for the new companion to be officially "active" in the system, though many users find it happens almost instantly. A critical tip: if you have already booked a flight for yourself and then change your companion, you simply go back into "My Trips" and click the "Add Companion" button to generate a new ticket for the new person. You cannot simply "swap" names on an existing companion ticket; that ticket must be cancelled and re-booked under the new companion's name to ensure the manifest and security data are accurate.