Wave of canceled flights from omicron closes out 2021

More canceled flights frustrated air travelers on the final day of 2021 and appeared all but certain to inconvenience hundreds of thousands more over the New Year's holiday weekend.

Airlines blamed many of the cancellations on crew shortages related to the spike in COVID-19 infections, along with wintry weather in parts of the United States.

United Airlines, which suffered the most cancellations among the biggest U.S. carriers, agreed to pay pilot bonuses to fix a staffing shortage.

By early evening Friday on the East Coast, airlines had scrubbed more than 1,550 U.S. flights — about 6% of all scheduled flights — and roughly 3,500 worldwide, according to tracking service FlightAware.

That pushed the total U.S. cancellations since Christmas Eve to more than 10,000 and topped the previous single-day peak this holiday season, which was 1,520 on Dec. 26.

The disruptions come just as travel numbers climb higher going into the New Year’s holiday weekend. Since Dec. 16, more than 2 million travelers a day on average have passed through U.S. airport security checkpoints, an increase of nearly 100,000 a day since November and nearly double last December.

Led by Southwest and United, airlines have already canceled 1,500 U.S. flights on Saturday — about 700 at Chicago's O'Hare Airport, where the forecast called for a winter storm — and 700 more on Sunday.

Canceled flights began rising from a couple hundred a day shortly before Christmas, most notably for United Airlines, Delta Air Lines and JetBlue Airways.

On Friday, United canceled more than 200 flights, or 11% of its schedule — and that did not include cancellations on the United Express regional affiliate. CommutAir, which operates many United Express flights, scrubbed one-third of its schedule, according to FlightAware.

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