Mapped: 19,000 US flights canceled due to the huge winter storm — marking the worst weekend for air travel since COVID

An American Airlines plane being de-iced at Dallas-Fort Worth International Airport on Saturday.

Ron Jenkins/Getty Images

• Over 19,000 flights within, into, or out of US airports have been canceled since Saturday, per FlightAware.
• Sunday was the worst day for cancellations since the early days of the pandemic.
• Business Insider created a map to show the 20 worst-affected airports.

Thousands of flights were canceled this weekend as Winter Storm Fern brought heavy snow and ice to much of the country.