More recently, U.S. carriers have seen an erosion in their share of bookings to Milan, according to a report the U.S. airlines sent to the White House and the departments of State, Transportation and Commerce. The report says the combined share of bookings between the United States and the Indian subcontinent for Delta Air Lines (DAL.N), United Airlines (UAL.N) and American Airlines (AAL.O) has fallen to 34 percent in 2014 from 39 percent in 2008.