The New York Times reports:
As of Saturday night, nearly 650 flights in the United States had been canceled and more than 5,200 flights within, into or out of the country had been delayed, according to the flight tracking website FlightAware.
FlightAware data showed that the three airports in the United States most affected by cancellations and delays on Saturday were Dallas-Fort Worth International Airport and Kennedy Airport and Newark Liberty International Airport in the New York area.
The Federal Aviation Administration said the top cause of the flight delays and cancellations was weather conditions followed by travel demand.
More than 600 flights in the U.S. were canceled and nearly 4,400 flights had been delayed as of late Saturday afternoon, as airlines struggled to keep up with high demand over the July 4 weekend. https://t.co/nD0ZqOe1n8
— The New York Times (@nytimes) July 2, 2022