Pelosi's flight to Taiwan makes history on Flightradar24 1:09
(CNN) --
Another wave of canceled flights and airline delays hits the entire United States this weekend.
According to the tracking website FlightAware, 862 flights have been canceled so far this Sunday.
A total of 4,041 have been delayed in the US.
Chicago's O'Hare airport suffered the most cancellations and delays on Sunday, with about 12% of flights canceled and 35% delayed.
Chicago saw a lot of rain today, including a flash flood warning that was in effect until 3 pm local time for parts of Cook County.
American Airlines cuts 2% of its flights for September and October
weekend of cancellations
A total of 657 flight cancellations and 7,267 delays within, to or from the United States occurred on Saturday.
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American Airlines canceled 4% of its flights and 24% of its Saturday flights were delayed, according to FlightAware.
United had 4% of its flights canceled and 23% delayed, followed by Delta with 2% cancellations and 22% delays on Saturday, FlightAware notes.
41% of JetBlue flights and 36% of Southwest flights were also delayed on Saturday, according to the website.
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