To cancel a Southwest Companion Pass reservation, you must follow a specific sequence because the companion's ticket is "tethered" to the primary traveler's booking. In 2026, you should first log into your Southwest account and find the "Companion" flight under "My Trips." You must cancel the companion's reservation first. You can do this by clicking "Cancel Flight" next to the companion's name; any taxes paid (usually $5.60 each way) will be refunded to the original form of payment. Once the companion's seat is successfully canceled, you are then free to change or cancel the primary traveler's flight. If you try to cancel the primary flight first, the system will often block the action or result in an error because the "linked" companion seat cannot exist without a primary flyer. If you encounter issues online, calling the Rapid Rewards support line or using the chat feature in the Southwest app is the most reliable way to ensure the link is severed correctly without losing travel funds.