KEY POINTS
  • Southwest pulled marketing after Flight 1380 in April.
  • A passenger was killed after one of the Boeing 737's fan blades broke off.
  • Southwest expects a 3 percent decline in revenue for the quarter.

on Monday said it expects revenue to fall in the second quarter after a decline in bookings following a deadly engine failure aboard one of its flights in April.

Southwest, which carries more travelers within the U.S. than any other airline, forecast a 3 percent drop compared with a year ago, in the revenue it generates per each seat it flies a mile, a key industry metric. The airline had warned of a 1 percent to 3 percent drop in operating revenue per available seat mile in April following the accident after it pulled marketing.