Travel Woes Deepen as Omicron Variant Hits Pilots and Flight Attendants


Airlines continued to scrub flights Friday as Covid-19 infections hit pilots and flight attendants, leaving carriers short-staffed to operate busy schedules over the Christmas holiday weekend.

Airlines have canceled more than 600 U.S. flights so far Friday, calling off hundreds more scheduled for Saturday, according to FlightAware, a flight-tracking site. Some European airlines and rail operators are also grappling with higher rates of illness among employees, in the latest sign of how the rapidly spreading Omicron variant is upending business even in industries with heavily vaccinated workforces.

Cancellations in the U.S. climbed at carriers including

United Airlines Holdings Inc.

UAL 0.67%


Delta Air Lines Inc.,

DAL 0.43%

which began pre-emptively cutting flights Thursday. Airlines have rushed to reassign and reroute pilots and planes to cover the flying, in some cases offering additional pay to encourage healthy employees to pick up shifts over the Christmas holiday.

New York’s John F. Kennedy International Airport on Friday, when hundreds of flights were canceled across the U.S.


Scott Heins/Getty Images

United canceled over 185 mainline flights—10% of what was scheduled Friday—and another 120 on Saturday, according to FlightAware. Delta, which cited both winter weather and the impact of the new variant, said it canceled about 160 of the nearly 3,100 flights it had planned Friday. The airline said it expects upward of 150 cancellations on both Saturday and Sunday.

“Delta people are working together around the clock to reroute and substitute aircraft and crews to get customers where they need to be as quickly and as safely as possible,” the airline said in a statement.

The Omicron variant is becoming an increasingly disruptive force as it tears around the world. Its accelerating spread hampered operations and slowed sales at some businesses over the course of just a few days.

Many travelers had aimed to avoid calling off their plans, and U.S. airports screened nearly 2.2 million people on Thursday. But airlines in the U.S. and Europe are finding it increasingly difficult to maintain staffing levels as workers call in sick.

A significant increase in sick leave at Germany’s flag carrier,

Deutsche Lufthansa AG

, overwhelmed its holiday contingency plans, a spokesman said Friday. That forced it to cancel some trans-Atlantic flights from Frankfurt to cities including Boston, Houston and Washington.

The spokesman said the airline wouldn’t comment on whether the sick leave was related to the coronavirus because it wasn’t informed of the nature of the illnesses. “We have planned with a very large buffer for the vacation period. However, this is unfortunately not sufficient for the high sick rate,” the airline said in a statement.

A flight crew at Ronald Reagan Washington National Airport on Friday as Covid-19 left airlines short-staffed.


Eric Lee/Bloomberg News

Connie Tzeng was supposed to fly from Chicago to Atlanta on Friday to visit her parents for her 30th birthday, which is on Christmas Day. She got tested for Covid-19, bought at-home tests for everyone to take and stocked up on high-quality masks.

Around 8 p.m. Thursday night, she found out her United flight was canceled.

Ms. Tzeng and her husband looked at the rebooking options and found they would either need to travel on standby or fly from Milwaukee, which would involve layovers and more time spent in airports. They decided to accept a refund for the canceled flight and will instead spend Christmas Day eating Chinese food at home.

“It does feel like a disappointment, in that a lot of the things that I put a lot of effort into feel a little moot now because we’re just staying at home, even though neither my husband nor I have Covid currently,” she said.

During the year, several U.S. airlines struggled with staffing shortfalls and other strains as they ramped up their operations, and they took additional steps to insulate themselves from potential holiday meltdowns. Some, like

American Airlines Group Inc.


Southwest Airlines Co.

, have so far managed to avoid large numbers of cancellations this week.

JetBlue Airways Corp.

said it entered the holiday season with its highest staffing levels since the pandemic began, but has still run into problems due to an increasing number of Omicron-related sick calls. An airline spokesman said the carrier had to cancel a number of flights despite its best efforts, and more cancellations and other delays are possible.

Passenger planes at Ronald Reagan Washington National Airport on Friday, when cancellations climbed.


Eric Lee/Bloomberg News

The airline, which has canceled 7% of scheduled flights Friday, according to FlightAware, said it is trying to minimize disruptions as it cuts flights and to give customers as much advance notice as possible. The airline is also trying to shore up staffing by deploying managers to front-line operations where possible and using incentives to encourage crew to pick up extra flying.

Allegiant Travel Co.

, a Las Vegas-based budget carrier, has also been hit by staffing issues as cases of the Omicron variant have surged. Allegiant said it had issued refunds to customers whose flights were canceled and provided additional compensation of up to $300 and $150 in vouchers.

Airline customer-service centers have been strained by calls. Jason Stapleton spent an hour on hold with United on Thursday after the airline canceled his flight from California to Kansas City, offering a trip with an overnight layover in Chicago rather than the one-hour stop in Denver he had planned.

“It was a complicated trip to begin with and they threw a huge wrench in it,” he said. He ended up booking another flight on Southwest.

A security checkpoint Friday at Denver International Airport as the travel industry felt the effects of the Omicron variant.


David Zalubowski/Associated Press

In Europe, train service—a popular means of domestic and cross-border travel—was also being affected. U.K. train operators warned passengers Friday of widespread delays, cancellations, last-minute schedule changes and rerouting of journeys that could affect connections, stretching from London and across swaths of the U.K.

“We are experiencing increasing staff sickness due to Covid, the side effects from booster jabs and seasonal illnesses,” read an update Friday on Britain’s National Rail website, a shared-services site that links passengers to rail operators across the country and helps them plan journeys.

National Rail advised that late-scheduled Christmas Eve trains were especially in danger of cancellation. Some trains also were canceled Friday because of planned labor strikes affecting some services to Birmingham, Edinburgh and elsewhere, according to rail representatives.

Eurostar, which operates at London’s King’s Cross station, said it canceled a small number of services.


Matt Dunham/Associated Press

Southern Trains, which operates in the south of England, told customers that it was expecting to have to cancel various services at short notice over the holiday period. The company said in a statement: “Like many other businesses across the country, we are experiencing increasing staff sickness due to Covid, the side effects from booster jabs and seasonal illnesses. This means we may unfortunately have to cancel or amend services at short notice.”

A spokeswoman for the SNCF, the French state-owned rail company, said Friday that national trains were running normally, but a small number of regional trains had been canceled and replaced by bus services. “The disruption remains occasional, local and marginal,” she said. “Like other companies we’ve been affected by the fifth wave,” She said some absenteeism was due to employees testing positive, or because they had been in contact with someone who tested positive.

Eurostar, the train service that links the U.K. with France, Belgium and the Netherlands, said it canceled a small number of services because fewer people are traveling.

Write to Alison Sider at

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