Under DOT rules , airlines must disclose the full price of air travel to consumers . This is a requirement that has been in place since at least 2008 and was updated last year by Congress ( http://www.congress.gov/bill/114th-congress/senate-bill-112th/summary ) In August , the DOT fined United $ 75,000 for not disclosing taxes and fees in the initial advertised fares on its Web site and for showing one-way fares that were only applicable for round-trip travel . Government taxes and fees per passenger are the only exception to the rules .
Under DOT rules , airlines must disclose the full price of air travel to consumers . This is a requirement that has been in place since at least 2008 and was updated last year by Congress ( http://www.congress.gov/bill/114th-congress/senate-bill-112th/summary ) Government taxes and fees per passenger are the only exception to the rules .