Executives from five airline companies will testify about the pricing structure of ancillary fees before Blumenthal's Senate panel on Dec. 4.

Around 6 million Americans are expected to fly this Thanksgiving, many facing excessive "junk fees" for services like seat selection and baggage, according to a study. U.S. Sen. Richard Blumenthal (D-CT) blames airline consolidation for allowing companies to charge these fees without justification,

Five airlines that serve Connecticut's Bradley International Airport were cited in a U.S. Senate subcommittee report for extra seat and baggage charges.