3 US airlines fined â¹5.5 crore for violating consumer rules 
Frontier Airlines, American Airlines and Delta Air Lines have been collectively fined $850,000 (â¹5.5 crore) for violating airline consumer protection rules. Frontier Airlines was fined $400,000 for violating oversales and disability rules and American Airlines was fined $250,000 for failing to make timely refunds to flyers. Delta Air Lines was fined $200,000 over inaccurate baggage reports. 