About 1,800 of Spirit's roughly 5,200 flight attendants will be affected, with involuntary furloughs set to take effect on December 1. "As part of our ongoing restructuring, we are taking steps to align staffing with our fleet size and expected flight volume," the airline said in a statement to Business Insider. "We recognize the impact of this decision on affected Team Members, and we are committed to treating them with care and respect during this process," it added.