A "technical issue" at British Airways has delayed flights across the company, impacting thousands.

The cause of the outage is not yet known.

In a statement, British Airways said flights were "currently operating, but are experiencing delays" and that its teams were working to "resolve a technical issue affecting some of our systems."

As of yet, flights have not been canceled, but that could change as delays build up.

BA has experienced a number of lengthy outages in recent years.

The airline last suffered a major outage last year, with more than 175 flights canceled. In December 2022 a large number of long-haul flights were impacted by a different outage. Short-haul flights were grounded earlier that year, during a lengthy and disruptive outage in February.

In 2017, more than 75,000 passengers were impacted by a British Airways IT issue - that time, one of the company's data centers suffered an outage, and services failed to shift to the backup facility. BA took the data center's operator, CBRE, to court over £58m in losses, but the two groups ultimately settled out of court, with no admission to liability.

Months later, another BA IT failure caused major flight delays.

In 2019, at least 15,000 passengers across 84 flights had their journeys canceled due to a BA outage.

Earlier this year, BA said that it would spend £7 billion ($9.01bn) on a modernization program that includes migrating 700 IT systems to the cloud.