More than 1,300 flights were canceled Saturday and Sunday, according to the flight-tracking site FlightAware, marking another punishing weekend for travel.

Delays also totaled in the thousands over the weekend.

On Saturday, there were nearly 660 cancellations within, into or out of the United States, FlightAware reported. On Sunday, by 1 p.m., another nearly 740 flights had also been canceled, according to FlightAware.

Newark Liberty International, Chicago Midway International Airport and Chicago O’Hare International Airport were the three airports topping the list as having the most-canceled and most-delayed flights on Sunday, according to FlightAware.

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Saturday’s delays climbed to nearly 7,250 within, into or out of the United States, according to FlightAware.

Read more: NBC