Airlines continue to be heavily hindered by COVID-19 and extreme weather.
Airline flights have continued to be delayed or canceled due to staffing issues or the presence of the omicron variant.
Airlines worldwide canceled more than 2,700 flights on Tuesday, reports FlightAware. At least 1,000 of those flights occurred within, going into, or leaving the United States.
OMICRON SPREAD CAUSES THOUSANDS OF FLIGHT CANCELLATIONS AND DELAYS
There have also been 7,800 flight delays on Tuesday, with more than 2,800 of them occurring in the U.S.
Many of these travel cancellations are attributable to the rise of omicron. Thousands of flights were canceled on Christmas Eve due to a "massive rise" of sick leave requests. Since then, these cancellations have continued, with thousands of flights getting canceled or delayed over the weekend.
"The nationwide spike in omicron cases has had a direct impact on our flight crews and the people who run our operation," a spokesperson from United Airlines told the Washington Examiner on Monday. "As a result, we've unfortunately had to cancel some flights."
The weather has also played a significant part in delaying travel. Alaska Airlines, which canceled 133 flights Monday, attributes its cancellations and delays to winter weather in the Pacific Northwest.
"We're working as quickly as possible to get all our affected guests rebooked on other flights while operating safely," Alaska Airlines told CNN.
Despite surging reports of omicron among flight crews, flight travel has rebounded since the start of the pandemic. The TSA said it screened 1,709,601 people on Christmas Eve. In 2020, it said it had screened 846,520 on Christmas Eve.
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This is still down from pre-pandemic levels of 2,552,194 on Christmas Eve in 2019, according to the TSA.
Omicron is now the dominant strain of COVID-19 in the U.S. The new variant, combined with winter conditions, has made the recent spread of infections the second largest wave since the pandemic began, according to Our World In Data.