Ryanair and Wizz Air demand NATS overhaul after UK flight chaos

Fresh disruption across major UK airports has triggered renewed calls from low cost carriers Ryanair and Wizz Air for a fundamental overhaul of the country’s air traffic control provider, NATS, after a new technical fault left hundreds of flights delayed or cancelled and tens of thousands of passengers facing knock on chaos.

New outage rekindles concern over NATS resilience

According to published coverage, a technical problem at NATS on 8–9 September 2026 affected flight operations at key hubs including London Heathrow and other major UK airports, forcing airlines to cancel or delay hundreds of services as traffic flow was restricted for safety reasons. The disruption came despite earlier commitments to improve resilience following a high profile system failure in August 2023 that had already drawn intense scrutiny of the provider’s capabilities.

Reports indicate that the latest incident was linked to an issue in NATS’ flight data or processing systems, prompting temporary capacity limits and creating bottlenecks at some of Europe’s busiest gateways. Even after the immediate technical fault was resolved, airline schedules remained heavily affected as aircraft and crews were left out of position, illustrating how quickly a relatively short outage can cascade through tightly timed networks.

Initial tallies from industry coverage suggest that close to 1,000 flights were disrupted across the UK on the peak day of the incident, including a significant number of short haul services operated by budget carriers. Airports and airlines spent much of the following day working through backlogs, with some passengers reporting overnight delays, missed connections and last minute cancellations.

The UK Civil Aviation Authority has confirmed via public statements that it is seeking a detailed account of the outage from NATS and will assess whether additional steps are needed to protect the reliability of national air traffic services. The episode has intensified a long running debate about how the UK balances cost control with investment in critical aviation infrastructure.

Ryanair calls for leadership change at NATS

Ryanair, Europe’s largest low cost carrier by passenger numbers, has been among the most vocal critics of NATS in recent years. Following the September disruption, the airline publicly renewed its demand for a sweeping overhaul of the organization and reiterated calls for the resignation of NATS chief executive Martin Rolfe, arguing that repeated failures show that promised improvements after the 2023 breakdown have not materialised.

Company statements highlighted by industry media say more than 65,000 Ryanair customers were impacted by cancellations and delays linked to the latest incident, with over 50 flights reportedly cancelled in a single day. The carrier contends that its own operational performance is being undermined by external infrastructure issues and has framed the outages as avoidable if NATS invested more in system redundancy and staffing.

Ryanair has for some time campaigned on air traffic control reliability, previously criticising both technical resilience and staffing levels at various European providers. With the latest event, the airline is sharpening its focus on the UK network, arguing that repeated glitches are not compatible with the government’s ambition to grow connectivity and passenger numbers through already congested airspace.

Industry observers note that while airlines can claim compensation from NATS under certain contractual arrangements, carriers often shoulder the immediate operational burden of reaccommodating passengers, repositioning aircraft and absorbing schedule knock on effects. This financial and reputational exposure helps explain the sharp tone of Ryanair’s response.

Wizz Air pushes for urgent reform of UK air traffic control

Central and Eastern Europe focused budget airline Wizz Air has echoed Ryanair’s criticism, issuing a detailed public statement expressing what it described as extreme disappointment that another NATS technical failure has caused widespread disruption across the UK aviation network. The carrier has called for urgent reform of NATS, stating that a critical national infrastructure provider should not repeatedly bring the system to a standstill.

According to market and financial news reports, Wizz Air argued that airlines, airports and passengers should not be expected to absorb the costs of recurring outages at a monopoly provider. The airline has urged UK authorities to examine both the technical architecture and governance of NATS, signalling that it expects concrete changes rather than further reviews and assurances.

The latest disruption is particularly sensitive for Wizz Air, which has expanded its UK presence in recent years and is seeking to build a stronger position at London and regional airports. Recurrent control system issues risk undermining that strategy by eroding passenger confidence in reliability on routes to and from the UK.

Analysts point out that both Ryanair and Wizz Air operate high utilisation models that rely on rapid aircraft turnarounds and tightly scheduled rotations. Any external shock to air traffic capacity can therefore have disproportionate operational and financial consequences for these carriers, amplifying their incentive to press for more robust infrastructure.

Regulators revisit lessons from 2023 system failure

The UK air traffic control network has been under close examination since the August 2023 failure of an automated flight plan processing system, which triggered severe disruption across British airports and knock on delays throughout Europe. Following that episode, the Civil Aviation Authority directed NATS to review its contingency planning and resilience, and commissioned independent assessments of the root causes.

Publicly available documents from that period show that regulators highlighted the need for more effective backup systems and clearer communication protocols between NATS, airports and airlines. The expectation within the industry was that investment and organisational changes would significantly reduce the risk of another large scale outage.

The September 2026 incident has therefore prompted renewed questions over how thoroughly earlier recommendations were implemented. Aviation commentators note that while the duration and technical details of the latest fault differ from the 2023 case, the operational outcome for passengers was similar: widespread cancellations, long delays and limited capacity for airlines to provide timely alternatives on busy routes.

Regulatory scrutiny is likely to focus on whether existing oversight frameworks and performance targets for NATS adequately capture the real world impact of even brief outages. There is also growing discussion about how the costs of such events are distributed between the air traffic provider, airlines and end customers.

What an overhaul of NATS could involve

While Ryanair and Wizz Air have not yet set out a detailed joint blueprint for reform, industry reporting points to several areas that could form part of an eventual overhaul. These include increased investment in modern, redundant flight data systems, enhanced contingency arrangements to keep traffic flowing during technical glitches, and potential changes to the way NATS is regulated and incentivised.

Some analysts are also raising the prospect of revised funding models that more directly link NATS’ income to service reliability, or that impose financial penalties for major outages. Others have suggested a stronger role for independent audits of technology upgrades and stress testing, similar to regimes used in other sectors considered critical to national infrastructure.

Any significant reform would need to balance cost, safety and efficiency. Air traffic control systems are complex and tightly regulated, and safety remains the overriding priority. However, the scale of recent disruptions is prompting calls from airlines for a sharper focus on operational continuity and faster recovery, not only on preventing failures in the first place.

For travellers, the debate may feel remote, but its outcome will influence the reliability of UK flying in the years ahead. As passenger numbers continue to recover and grow, the pressure on NATS, airlines and regulators to deliver a more resilient system is expected to intensify.

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