For Southwest Airlines Companion Pass holders, changing your designated companion is a relatively quick process, but it requires careful timing. You are allowed to change your companion up to three times per calendar year. While you can designate a new person online via your Rapid Rewards account or the Southwest app almost instantly, the airline recommends allowing up to 48 hours for processing. Crucially, before you can change your companion, you must cancel any existing reservations currently booked for your old companion. Once the old companion is removed and the new one is added, you can typically book travel for the new person on the same day the change is processed. If you prefer to handle the change over the phone, you can call Southwest customer service, but the 48-hour processing window still applies. This benefit is highly valued for its flexibility, allowing travelers to swap partners, friends, or family members as their travel needs change throughout the year.