BusinessStartup & Funding Feds Investigate Airlines' Frequent Flier Points Programs By Soumyadeep Pal - September 6, 2024 0 Share FacebookTwitterPinterestWhatsAppLinkedinReddItTelegramTumblrDiggFlipNaverEmailPrint The Department of Transportation orders the four biggest U.S. carriers to explain their customer loyalty programs, acting on concerns that frequent rule changes make it costlier for fliers to redeem rewards.