(CNN Business) — More than 1,300 flights in the US had been canceled as of Monday night and more than 7,400 flights were delayed, according to the FlightAware flight tracking website.

Nine hundred US flights were canceled on Sunday, according to FlightAware.

Dallas-Fort Worth International Airport has been hit particularly hard, with hundreds of flights to and from the airport canceled and about half of its outbound flights delayed, according to data from FlightAware.

The Dallas/Fort Worth area has been affected by heavy rain and flooding. Travelers at other Texas airports, including Dallas Love Field, Houston and Austin, also faced cancellations and delays due to severe weather.

The unpleasant surprise she found herself two days after moving in 1:12Also contributing to cancellations and delays across the country were the three airports in the New York metropolitan area. Fifteen percent of Newark Liberty flights were cancelled. JFK and LaGuardia airports had many cancellations and hundreds of delays.

Meanwhile, flights at Chicago O’Hare International Airport have been affected by staffing problems at the Federal Aviation Administration. The FAA also blames the wind.

“Operations at Chicago O’Hare International Airport are normal after the FAA reduced traffic for approximately one hour tonight. Winds and staffing issues related to COVID-19 halted departures to O’Hare from some airports.” in the Midwest,” the FAA said in a statement.