Southwest Airlines and its subsidiary AirTran Airways have reported a growth of 5% to 6% in passenger unit revenues as traffic falls in May.
Revenue passenger miles were down 2.6% year-on-year, says Southwest.
Capacity also decreased by 0.9%, resulting in a 1.4 percentage point fall in passenger load factor to 81.3%. Passenger numbers declined 1.1% to 9.59 million.
On a year-to-date basis, passenger traffic fell 1.1% and capacity rose 0.1%. The passenger load factor was down 0.9 percentage points to 78.7%.