4-Apr-2011 1:03 PM
United, Continental, Delta and American Airlines raise fares
United, Continental, Delta and American Airlines announced they have raised base fares by USD10 per round trip however as of 01Apr-2011, some low cost carriers had not matched the increase (AP, 01-Apr-2011). US carriers raised base fares twice in Jan-2011, three times in Feb-2011 and once in Mar-2011.