Yes, designated Companions under the age of 18 can accompany Companion Pass holders on international flights. I would like to use Rapid Rewards points to purchase international travel. Will the same redemption rules apply as those that apply to booking domestic U.S. flights using points?

Yes, you can absolutely use the Southwest Companion Pass for international flights, provided that Southwest Airlines operates service to that destination. In 2026, the Companion Pass remains one of the most powerful tools in travel because it has no blackout dates and applies to every destination in the Southwest network, including Mexico, Central America, and the Caribbean (such as Aruba, Jamaica, and the Bahamas). When you book your own flight—whether using cash or Rapid Rewards points—you simply go to your "My Account" page and click "Add Companion." The only cost for the companion on these international routes is the government-mandated taxes and fees, which are significantly higher for international travel (often $60–$120 round-trip) than the standard $5.60 domestic fee. As long as there is at least one seat available for sale on the plane, you can add your designated companion to your itinerary and fly together across borders for just the price of those taxes.