Passengers are being urged to check with airlines as flight disruption continues after a major IT outage.

A flawed update rolled out by cybersecurity firm CrowdStrike knocked many offline around the world on Friday, causing flight and train cancellations and crippling some healthcare systems.

A fix was deployed for a bug in the update, which affected Microsoft Windows PCs, on Friday afternoon, with the chief executive of the company at the centre of the outage warning it would take “some time” for systems to be fully restored.

While Gatwick is operating "as normal today", passengers are advised to keep updated with their airline.

A London Gatwick spokesman said: "The airport is operating as normal today following yesterday’s global issues.

"Some delays and cancellations are likely throughout the day,  as airlines continue to recover from yesterday’s disruption. We strongly advise passengers to check with their airline for the latest updates."

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Wizz Air passengers at Gatwick faced long queues yesterday as its online check in system was down, meaning all passengers had to check in manually at the airport.

Serge Poliakoff, from Vienna, waited two hours to check in and drop his baggage at Gatwick for his Wizz Air flight.

The firm, which normally charges customers to check in at airports, waived the fee as its online systems were down.

Yesterday, Dean Seddon waited for more than three and a half hours at Gatwick on what was the last day of term before the summer holidays for many schoolchildren.

Mr Seddon started queueing at 6am to check in for a trip with his social media training company to Miami, Florida, ahead of their scheduled departure at 10am with Norse Atlantic Airways.

“There are just people everywhere, there must be 400 people in this queue for the check-in desk I’m at. It’s just Bedlam,” the 42-year-old said.

“It’s one of those things where you kind of know we’re not going to fly, but you don’t want to leave because you don’t know."

Mr Seddon said there had been some people getting “agitated” in the queue but overall travellers had remained calm.