(CNN) -- The U.S. Department of Transportation fined Taiwan's China Airlines Tuesday for "deceptive advertising of airfares."
China Airlines was fined $80,000 for failing to include various fees in their prices for transportation, a DOT statement said.
"We take our airline price advertising rules seriously and expect carriers to comply with them," U.S. Transportation Secretary Ray LaHood said in the statement.
China Airlines did not post information on additional taxes and fees on their website for a time, the department's Aviation Enforcement Office said.
The DOT requires any price for air transportation listed in advertising to be the full price customers will pay. The only exception to their rule, which will end October 24, is for government-imposed taxes and fees based per passenger, the statement said.
"When passengers shop for air transportation, they have a right to know the full price they'll be paying," LaHood said in the statement.
Advertisements must also disclose if fees and taxes are not mentioned as part of the fare they promote. Carriers also have to identify the September 11 security fee of $2.50 for each passenger boarding at a U.S. airport, a fee that applies to foreign carriers and ticket agents as well, the statement said.