Around 2,350 flights were cancelled on Thursday (23 December) and another 2,120 were scrapped on Friday (23 December).
According to Reuters, Southwest Airlines cancelled 865 flights on Thursday (22 December) – about one-fifth of all its scheduled flights – and another 550 on Friday (23 December).
A quarter of departing flights at Chicago’s O’Hare airport and 37% of flights at Chicago Midway have been called off, while 27% of departing Denver flights had been cancelled.