Airlines continue scrapping U.S. flights after more than 5,000 weekend cancelations

Wintry weather combined with the pandemic to frustrate air travelers whose return flights home from the holidays were canceled or delayed in the first days of the new year.

More than 2,500 U.S. flights and more than 4,100 worldwide were grounded Sunday, according to tracking service FlightAware.com. That followed Saturday's mass cancellations of more than 2,700 U.S. flights, and more than 4,700 worldwide.

And some 1,700 more U.S. flights and more than 3,000 more across the globe were scrapped as of 6 a.m. EST Monday, FlightAware said. The numbers were sure to rise as a storm front made its way up the Eastern Seaboard.