A Senate Subcommittee report found airlines have brought in more than $12 billion in fees from things that used to come with the price of a ticket.

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,