Yes, you can generally keep your Southwest Companion Pass even if you cancel the credit card used to earn the qualifying points. The Companion Pass is a promotional benefit tied to your Rapid Rewards account, not the credit card itself. Once the pass is earned—either through the 135,000 qualifying points or 100 qualifying flights—it remains valid for the remainder of the current calendar year plus the following full calendar year. However, there is a critical distinction: while you keep the pass, you will lose the ability to earn future points toward the next year's pass via credit card spend. Additionally, any points currently in your Rapid Rewards account will remain there (as points do not expire), but you will no longer receive the "anniversary points" or other card-specific perks. It is often recommended to wait until after your points have posted to your Southwest account before canceling to ensure no "pending" points are forfeited. Always check for any specific "sign-up bonus" clawback clauses in your cardmember agreement if you cancel within the first year.