Three airlines will pay for transgressions against passengers.
The U.S. Department of Transportation announced on Friday that it has fined Frontier Airlines, American Airlines and Delta Air Lines for violating consumer protection rules.
• Frontier will pay $400,000 for failing to seek volunteers before bumping passengers involuntarily, failing to provide bumped passengers with written notice of their rights and to provide proper compensation in a timely manner. USDOT also found that Frontier…