More than 3,000 flights were cancelled around the world on Sunday, more than half of them U.S. flights, adding to the toll of holiday week travel disruptions due to adverse weather and the surge in coronavirus cases caused by the Omicron variant.
The Christmas and New Year holidays are typically a peak time for air travel, but the rapid spread of the highly transmissible Omicron variant has led to a sharp increase in COVID-19 infections, forcing airlines to cancel flights as pilots and crew quarantine. Chevron Corp was to start a full return to office from Jan. 3 but told employees in late December it was postponing the move indefinitely.
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