What Caused the Widespread Disruption?
The travel chaos began on Tuesday, September 8, 2026, due to a technical issue at National Air Traffic Services (NATS), the company that manages the UK's airspace. The problem occurred in the flight processing system, which automatically handles flight plans.
This forced air traffic controllers to limit the number of flights for safety, leading to a four-hour outage that grounded planes and created a massive backlog. More than 2,000 flights were cancelled across Tuesday and Wednesday, affecting hundreds of thousands of passengers at major airports including Heathrow, Gatwick, Manchester, and Stansted. Although the initial fault was fixed within hours, the knock-on effects have continued as airlines struggle to get crews and aircraft back in the right positions.
Are Flights Back to Normal?
Flight schedules began returning to normal by Thursday, September 10, with a significant reduction in cancellations and delays. However, the impact was severe. London Heathrow was the most affected airport, with a large number of the cancellations concentrated there. British Airways was the hardest-hit airline, cancelling hundreds of flights over the two days. While the immediate crisis has eased, passengers are still advised to check the status of their flight with their airline before travelling to the airport, as minor residual delays are possible. The Transport Secretary has asked the Civil Aviation Authority (CAA) to conduct an independent review into the incident.
A Look Ahead: Potential for More Delays
While the NATS technical issue is resolved, another challenge is on the horizon for travellers using Gatwick. More than 200 workers who provide assisted travel services at the airport are scheduled to strike in a dispute over pay. The strikes, organised by the Unite union for employees of the contractor Wilson James, are planned for two periods in September: from the 17th to the 21st and from the 23rd to the 26th. The union has warned that the industrial action will inevitably lead to delays in boarding and disembarking passengers who require assistance, which could affect flight schedules for both long-haul and short-haul services.
Your Rights as a Passenger
If your flight is cancelled, your airline is legally required to offer you the choice of a full refund or a replacement flight to your destination at the earliest opportunity. This can even include booking you on a rival carrier if necessary. If your flight is significantly delayed, you are entitled to care and assistance from the airline. This includes reasonable provisions of food and drink, access to communication, and overnight accommodation with transport if you are delayed until the next day. It is important to keep all your receipts if you have to make your own reasonable arrangements, but avoid expenses like luxury hotels or alcohol, as these are unlikely to be reimbursed.
What About Financial Compensation?
In this specific instance, financial compensation beyond a refund or expenses is unlikely. The Civil Aviation Authority (CAA) has stated that the NATS system failure is likely to be considered an 'extraordinary circumstance'. Under passenger rights rules, airlines are not required to pay the standard compensation of up to £520 when disruption is caused by events outside of their control, which includes air traffic control failures. While airlines are still obligated to provide care and assistance (like food and lodging) or rebooking, the additional cash payout for the inconvenience is not expected to apply to those affected by this incident.
