(CNN) — Thousands of flights in the United States were canceled over the New Year’s weekend due to a combination of Covid-19 disruptions and winter weather slowing travel.
Cancellations this Sunday in the United States already reach 2,373 flights, according to the FlightAware site, and cancellations worldwide reach 3,989.
Sunday is usually the busiest day of the week for travelers, and this Sunday is likely to be a busy day as the Christmas holidays and New Years week are closed. The Transportation Security Administration (TSA) said Thursday it plans to screen 10 million people Friday through Monday.
Southwest, JetBlue, Delta and American Airlines each have more than 100 canceled flights as of Sunday, with Southwest leading with 264. JetBlue has canceled 16% of its operations, according to FlightAware data.
Including this Sunday, airlines have canceled more than 14,000 flights in the past 10 days, including Christmas Eve, according to a CNN tally of FlightAware data.
FlightAware data shows more than 4,731 flights were canceled worldwide on Saturday, marking the biggest day of cancellations since the crisis began on Christmas Eve. At least 2,739 of the cancellations were within, to or from the United States.
The problem of canceled flights is expected to continue
The problem is expected to last until next week as airlines need time to recover from the weather issues on their own. There are already more than 310 US flights canceled for Monday.
Cancellations have been widespread across US airlines. The big four were like this on Saturday: Southwest canceled 13%, Delta 10%, American and United 8%.
A quarter of flights from Chicago O’Hare were canceled this Sunday, after 44% of flights from O’Hare and 54% of those from Midway were canceled on Saturday.
Allegiant has canceled 27% of its Saturday schedule, or 64 flights. Spokeswoman Hilarie Gray acknowledged weather and personnel issues related to Covid-19 in a message to CNN.
“As you have noted, we continue to have an unusual number of cancellations this week – some due to bad weather and others due to other factors – including the type of unforeseen impacts on staff due to COVID that other airlines and on-site partners have experienced who we are flying to.”
“We cannot predict the continued impact of these factors, but unfortunately we anticipate further delays and cancellations this week. Of course, when an unforeseen travel disruption occurs, affected passengers are notified directly by the service. customer and the options transmitted to be relocated on another flight, to receive a refund, a credit or other compensation”, he added.
a perfect storm
Airlines have already faced the omicron variant, which has led to an unprecedented increase in covid cases. Many airline employees have been unable to work. The Federal Aviation Administration has also warned that more of its own employees are testing positive, which could restrict flights.
Now a new challenge is added to the traveler’s woes: a major storm is hitting the Rocky Mountains and the Midwest, bringing heavy snow and ice. Nearly a quarter of flights at Kansas City International Airport were canceled on Saturday. In Detroit, airlines have canceled one in five flights.
Delta Air Lines told CNN Business it expects 200 to 300 of its more than 4,000 daily flights to be canceled over the holiday weekend. He also recommended people traveling to Chicago, Detroit, Salt Lake City, Seattle and the central and southern regions of the Rockies consider altering their travel plans due to weather conditions.
Southwest Airlines told CNN Business that all of its problems were caused by the weather.
CNN Business’ Chris Isidore and Ramishah Maruf contributed to this article.