By CBS 2 Chicago Staff

CHICAGO (CBS) – Hundreds of flights were canceled Friday due to staffing issues from COVID -19.

Airlines including Delta, United Airlines, and others say the Omicron variant is putting staffing levels under pressure.

READ MORE: Chicago Weather Alert: Lake-Effect Snow On The Way With 6 To 8 Inches Possible In Some Areas; Winter Storm Warning Issued

The cancellations hit as the world enters its third year of disruptions, lockdowns, and restrictions.

READ MORE: Two Men Shot Dead In Car In Ravenswood; Car Goes On To Crash And Catch Fire

In the last week, the average daily COVID-19 cases are up 45 percent as the Omicron variant spreads nationwide.

MORE NEWS: Pair Charged In Murder Of 8-Year-Old Melissa Ortega Denied Bail; Accused Teen Gunman Committed Three Previous Carjackings, Prosecutors Say

At last check, 62 flights were canceled at O’Hare and one at Midway airports.

CBS 2 Chicago Staff