The photo has been used for illustrative purposes only.
Reports suggested at least 18,000 passengers were grounded after the services in and out of Gatwick and Heathrow — Britain's busiest airports – were cancelled.
More than 200 other BA flights were delayed, according to the BBC. The airline declined to give a number of flights affected.
BA blamed "a systems issue which has resulted in some short-haul cancellations and delays from London airports".
A display warns passengers to "Expect Disruption" to British Airways flights at Heathrow Airport. AFP
It later said the issue had been resolved, and apologised to affected passengers.
"Our teams have been working tirelessly to get the vast majority of customers on their way, with most of our flights departing," it said.
"Our flights are returning to normal, however there may be some knock-on operational disruption as a result of the issue earlier."
BA had offered customers booked to travel Wednesday on short-haul flights departing from Heathrow, Gatwick and London City airports the chance to rebook to travel on another day between Aug.8-13.
Frustrated passengers took to social media to vent their anger and demand answers from BA, while some shared photos showing airport terminals filled with stranded travellers.
"There is no staff at the airport, we're in an info queue that isn't moving," Anya, a BA passenger bound for Zagreb, Croatia, tweeted.
"The only staff around are the duty free staff and they've been more helpful than anyone at BA. Get your act together #britishairways!"
A Heathrow spokesperson said BA was experiencing "a technical issue with its systems" impacting check-in and departures there.
The disruption is the latest incident to impact British Airways in recent years.
A 2017 worldwide system outage affected tens of thousands of its passengers, while a 2018 cyber attack saw hundreds of thousands of customers' personal data stolen.
The UK flag carrier and its 4,300 pilots have been locked in a nine-month pay dispute that could disrupt the travel plans of nearly 300,000 people.
The Ufo labour union on Friday announced strikes from Monday to Wednesday this week at Germanwings, which operates on behalf of Lufthansa's Eurowings brand, saying little progress has been achieved in talks with Lufthansa management.
Government of India has decided to resume scheduled commercial international passenger services to or from India from March 27, 2022," an official communique said on Tuesday.
The stolen items valued at Dhs21,000, according to the beauty centre manager. The convict intended to use these items for herself and her family’s members, the Court heard.
"The major cause of deaths could be drowning because the well was 60 feet deep and there was much water in it," Ilayaraja T, a top local government official, told Reuters.
“I have had more problems with the impact of the nerve damage than the bullet wounds,” Khan says. “I still can't walk properly, I still don’t have proper sensation in my right foot. That’s a lasting effect, which the doctor says eventually with time will heal, will go away.”
The possible spectacle of Trump's appearance in Manhattan before a judge as the first sitting or former President to face criminal charges, with international media camped outside, could further divide the world's most powerful country.