In a 55-page report, the majority staff of the Senate Permanent Subcommittee on Investigations released on Tuesday its findings after a year-long inquiry into five U.S. airlines’ ancillary fees, which the report said have led to higher costs and worse experiences for consumers and, in some cases, tax avoidance by the airlines.

A new Senate panel report highly critical of "junk fees" used by major airlines to charge passengers has lawmakers ready to question airline executives at a hearing in Washington, D.C., next month.