“That is the highest single-day toll yet since just before Christmas, when airlines began blaming staffing shortages on increasing COVID-19 infections among crews. More than 12,000 U.S. flights have been canceled since Dec. 24.”
“That is the highest single-day toll yet since just before Christmas, when airlines began blaming staffing shortages on increasing COVID-19 infections among crews. More than 12,000 U.S. flights have been canceled since Dec. 24.”