CHICAGO, (Reuters) – U.S. air carriers cancelled hundreds of flights Friday in response to a winter storm forecast for heavy snowfall and strong winds across the Northeast.

According to the National Weather Service, the Nor’easter Storm would cause travel disruptions and blizzard conditions.

American Airlines (NASDAQ) stated that it expected the storm’s impact to be “significant” on Northeast operations. This includes Boston Logan International Airport. In order to prevent any disruptions at the airport last-minute, Texas-based airline has already cancelled 50 flights. They are allowing passengers affected to rebook their flights with no change fees.

JetBlue of New York stated that 500 flights were canceled by JetBlue as of Sunday. United Airlines cancelled 10% its Saturday flights. Delta Air Lines (NYSE 🙂 said that they also expect to be affected by the storm.

Flight-tracking site FlightAware reports that Saturday has seen more cancellations than 2,200 flight cancellations.

The airline industry is facing additional challenges due to inclement weather. The carriers have been forced to cancel flights because of a rise in COVID-19 infection among their employees.

Southwest Airlines (NYSE) Co. announced Thursday that approximately 5,000 workers, roughly 10%, contracted the virus during the first three weeks in January. It has cancelled more than 5,600 flights this month. This is expected to result in a loss of revenue totaling $50 million.