Frontier employs 2,634 flight attendants and 1,590 pilots, including 758 captains and 832 officers. On Friday, 925 flight attendants and 559 pilots received WARN notices that they could be furloughed.

The Worker Adjustment and Retraining Notification Act of 1988requires employers to give notice at least 60 days before a large-scale furlough, layoff or plant closure.

The 275 pilot furloughs will come in addition to 220 corporate and support employees that have either already been let go or face furloughs on October 1, in line with job protection provisions included in the CARES Act. Management says driving down labor costs will be key to its goal of achieving breakeven cash burn by year end.

“Our focus continues to be on driving down labor costs and improving productivity—doing more with less employees in all aspects of the organization,” Allegiant chief operating officer Scott Sheldon said on the travel company’s Q2 earnings call July 30.