Article Photos: Frontier Airlines now charging for carry-on bags 1/1

FILE - In this Feb. 22, 2010 file photo, Frontier Airlines jetliners sit stacked up at gates along the A concourse at Denver International Airport. Passengers flying Frontier Airlines will now have to pay extra to place carry-on bags in overhead bins or for advance seat assignments. The move comes as the Denver-based airline transforms itself into a fee-dependent airline, similar to Spirit Airlines or Allegiant Air _ the only other U.S. carriers to charge such fees. (AP Photo/David Zalubowski, File)