Southwest brings back Companion Pass buy-one, get-one-free promotion

When Southwest Airlines members purchase tickets for themselves, a friend can fly for free, under the carrier's renewed Companion Pass promotion, the airline said Thursday. 

The popular deal is back this month for a limited time, and is only available to Rapid Rewards members who purchase, or redeem points for airline tickets. It's effectively a buy-one, get-one-free promo for air travel. 

"We love offering this Companion Pass promotion because it allows our members to experience one of the many benefits of our award-winning Rapid Rewards program," Southwest Vice President of Marketing Jennifer Bridie said in a statement.