More American Airlines flights are being cancelled because of the grounding of the Boeing 737 MAX. The airline announced that it’s extending cancellations through early June. Previously, the airline had said it would cancel about 90 flights a day through April 24th. Now, flights are being canceled through June 5th. Boeing is currently working to upgrade its software in the aftermath of two deadly crashes involving the 737 Max within five months of each other. In a statement, American Airlines said it continues to wait for the FAA to clear the 737 Max so their fleet can resume flying.