Can You Claim Compensation for the NATS Flight Disruption?

Large-scale flight disruption linked to technical failures at UK air traffic control provider NATS has left many passengers asking whether they can claim compensation, or if the chaos falls into a legal grey area of unavoidable disruption.

What Happened During the NATS Flight Disruptions

National Air Traffic Services, better known as NATS, operates the main air traffic control system for UK airspace. In recent years, a series of technical issues in its flight planning systems has led to widespread delays and cancellations on some of the busiest travel days of the year. One of the most disruptive failures occurred on 28 August 2023, the late summer bank holiday, when a fault in automated flight plan processing limited the number of aircraft that could be safely handled at any one time. Hundreds of flights were cancelled and many more delayed as airlines and airports slowed or halted departures.

Subsequent reviews published by the UK Civil Aviation Authority and government departments have described the event as a major systems failure that cascaded through the network. The disruption did not end when the software fault was resolved. Aircraft and crew were left out of position, airports faced congestion, and knock-on delays continued for days afterward as schedules were rebuilt. More recent, smaller-scale disruptions linked to NATS systems issues have reinforced questions about how responsibility and redress are allocated when infrastructure fails rather than an individual airline.

The scale of the disruption, falling across both UK and foreign carriers and affecting flights to and from multiple destinations, has highlighted how dependent air travel is on a small number of critical control systems. It has also exposed gaps in passenger understanding about what counts as compensable under UK and European-style air passenger rights, and what is treated as an unavoidable operational shock.

How UK and EU261 Rules Treat Air Traffic Control Failures

Compensation for delayed and cancelled flights in the UK is governed by a retained version of the European Union’s Regulation 261/2004, often described as “UK261.” Similar provisions apply under EU261 for flights departing the European Union or operated by EU carriers. These rules distinguish between disruption caused by factors within an airline’s control, such as maintenance or crewing decisions, and “extraordinary circumstances” that could not have been avoided even if all reasonable measures had been taken.

Publicly available guidance from the UK Civil Aviation Authority indicates that air traffic control restrictions and technical failures at a provider like NATS are generally treated as extraordinary circumstances. Industry and consumer advisories issued after the August 2023 NATS outage, and again after later ATC incidents, have consistently described the disruption as falling into this category. In practice, that means airlines are usually not liable to pay standard fixed-sum compensation for delay or cancellation tied directly to the NATS failure.

This classification has proven controversial among some passengers, who point out that technical faults are often compensable when they occur within an airline’s own systems. Regulators and courts have drawn a line between issues under a carrier’s operational control and failures in third-party infrastructure such as air traffic control, airport closures or airspace bans. The current position is that NATS-related failures sit on the infrastructure side of that divide, even when they originate in software systems rather than weather or security events.

When Passengers Can Still Claim Money Back or Assistance

Even when a NATS failure is classed as an extraordinary circumstance, airlines still have clear obligations toward affected passengers. Under UK261 and EU261-style rules, carriers must offer a choice between a refund of the unused flight or rerouting at the earliest opportunity or at a later date that suits the passenger, subject to seat availability. This right applies regardless of the cause of the disruption, including air traffic control failures.

In addition, duty-of-care provisions remain in place during long delays or overnight disruption. These include providing meals and refreshments appropriate to the waiting time, and arranging hotel accommodation and transport between the airport and the hotel where an additional night’s stay is required. Public guidance following the 2023 NATS incident underlined that passengers should not be left to shoulder these costs unaided simply because the underlying cause was outside the airline’s control.

If an airline does not offer assistance on the day, passengers may be able to reclaim reasonable out-of-pocket expenses afterward. Travel specialists and consumer organisations advise keeping all receipts for food, accommodation and local transport, and ensuring that any alternative arrangements booked are proportionate to the situation. Claims can then be submitted directly to the airline. Where disputes arise, passengers may be able to escalate complaints to an approved alternative dispute resolution body or, in some cases, seek redress through national enforcement bodies or small claims procedures.

Grey Areas: Knock-on Delays and Missed Connections

One of the most complex issues to emerge from the NATS failures is how to treat disruption that occurs after the immediate technical problem has been fixed. In the August 2023 event, many flights were cancelled on the day of the system failure itself. Others were cancelled or heavily delayed in the days after, as airlines attempted to reposition aircraft and crew and rebuild normal schedules. This raised questions about whether all of that later disruption should still be considered directly caused by extraordinary circumstances.

Commentary from legal specialists and consumer advocates suggests that some of these later cases may be open to argument. For example, if an airline cancels a flight several days after an ATC failure, when normal capacity has largely returned, passengers sometimes contend that the carrier’s own scheduling choices are now the main driver of the cancellation. In those situations, it is possible that compensation may be payable if regulators or courts view the event as having moved back within the airline’s control, although each case turns on its specific facts.

Similar questions arise for missed connections and complex itineraries. A long delay on an inbound flight due to NATS restrictions might cause a passenger to miss a later onward service that is otherwise operating normally. Depending on the ticket type, route and jurisdiction, there may be scope for compensation or at least rerouting and duty-of-care on the second leg, even if the first delay is classed as extraordinary. Passengers in these scenarios are often encouraged by consumer groups to submit a detailed claim and, if refused, to consider independent advice on whether a challenge is worthwhile.

What Travellers Should Do After a NATS-Related Disruption

For travellers caught up in any future NATS-related disruption, preparation and documentation remain central. Industry and consumer guidance recommend checking airline apps or airport information screens regularly, as well as monitoring broadcast or press reports for confirmation that an air traffic control issue is under way. Once a delay or cancellation becomes likely, passengers are generally advised to make contact with their airline through official channels before arranging their own rerouting, unless instructed otherwise by the carrier.

Keeping detailed records is important. Boarding passes, booking confirmations, written notices from airlines, and receipts for any additional food, accommodation or transport can all support a later claim for refunds or reimbursement of reasonable expenses. Where a carrier cites extraordinary circumstances and declines compensation, passengers can ask for that position in writing and, if unsatisfied, research whether the airline participates in an alternative dispute resolution scheme.

Looking ahead, regulators have signalled that lessons from the NATS failures will inform wider reforms to passenger protections. Government and Civil Aviation Authority publications following the August 2023 outage and subsequent review work refer to recommendations on strengthening consumer rights and clarifying responsibilities when infrastructure breaks down. While any legislative changes will take time, travellers affected by future NATS disruptions are likely to see greater emphasis on transparent communication, clear rerouting options and consistent application of duty-of-care, even where fixed-sum compensation is not legally required.