A U.S. Senate subcommittee has held a hearing to question the growing use of airline fees to charge passengers for things like early boarding and better seats

Airline executives pushed back against claims of travel "junk" fees in a testy exchange with lawmakers. during a Senate hearing on Wednesday. Members of the panel led by Democratic Sen. Richard Blumenthal accused airlines of charging obscure fees,

A Senate panel grilled top airline executives about added fees on their baggage and seats. Senators called on the executives to justify making billions of dollars from the fees. NBC News' Brian Cheung