Southwest Airlines Co. has announced the return of its "Companion Pass" offer, which allows the airline's "Rapid Rewards" members to designate a companion who can travel with them for free between August 15 and September 30.  
"Now more than ever, Customers are looking to get the most loyalty value from their purchases," said Jonathan Clarkson, vice president of marketing at Southwest Airlines, in a press release. "We're continuously looking for opportunities to appreciate our Rapid Rewards Members, especially with this unique way to earn the coveted Companion Pass."
Registration is open through Wednesday, April 5.