The Flightaware site reports it. A quarter in the US. The most interested are the American airlines Delta, United Airlines and American Airlines
Over 4 thousand flights have been canceled worldwide between Christmas Eve and Christmas Day due to the pandemic, in particular due to the rapid spread of the Omicron variant, causing inconvenience to tens of thousands of passengers. According to the specialized site Flightaware, more than a quarter of these cancellations concern the United States, between internal and international connections, with several companies having to deal with quarantined isolation of cabin crew or ground operations.
The most interested are Delta, United Airlines and American Airlines. Australia was also particularly affected by the inconvenience, with over 100 skipped connections to Sydney and Melbourne.