A U.S. Senate panel is taking aim at airlines and their growing use of fees for things like early boarding and better seats.

Five major U.S. airlines will be called to testify on Capitol Hill on Wednesday over rising ancillary fees paid by passengers.

Senators on Wednesday harshly criticized rising airline fees for luggage and seat assignments, saying carriers are looking for new ways to extract more money from passengers. Senator Richard Blumenthal,

Top airline executives will testify to senators Wednesday about extra fees they charge for bags, seats and boarding passes. A recent report found airlines make billions charging for so-called junk fees.