Southwest Airlines and Boeing have both pushed back the reintroduction of Boeing 737 Max flights to 2019 . The extended delay comes as the plane manufacturer must submit revised documentation after US and European regulators confirmed gaps in Boeing 's software documentation. Mike Blake Southwest and American, the two largest U.S. operators of the aircraft, have had to scale back growth plans and are together canceling more than 300 flights a day, taking a hit to profits as they manage slimmer fleets without the 737 MAX. Furthermore, once certification is given, airlines expect to run test flights before a commercial reintroduction. Both carriers have been cancelling over 300 flights a day since the jet was grounded globally in March 2019 , with American losing $435m in 2019 as a result, and Southwest taking a $540m earnings hit in the first nine months of the year .
Southwest Airlines and Boeing have both pushed back the reintroduction of Boeing 737 Max flights to 2019 . The extended delay comes as the plane manufacturer must submit revised documentation after US and European regulators confirmed gaps in Boeing 's software documentation. Furthermore, once certification is given, airlines expect to run test flights before a commercial reintroduction. Both carriers have been cancelling over 300 flights a day since the jet was grounded globally in March 2019 , with American losing $435m in 2019 as a result, and Southwest taking a $540m earnings hit in the first nine months of the year .