Wizz Air and Ryanair demand overhaul of UK air traffic control

Two of Europe’s largest low-cost carriers, Wizz Air and Ryanair, are stepping up calls for sweeping reform of UK air traffic control provider NATS following renewed disruption that has reignited debate over resilience, staffing and passenger rights in one of Europe’s busiest aviation markets.

Fresh disruption revives anger over NATS performance

Recent delays and system issues affecting UK airspace have pushed Wizz Air and Ryanair to sharpen their criticism of National Air Traffic Services, arguing that repeated problems are undermining confidence in the UK’s aviation infrastructure. The latest disruption follows a year of heightened scrutiny after a major technical failure at NATS in August 2023 caused widespread cancellations and delays on one of the busiest travel days of the year.

Publicly available information from the UK Civil Aviation Authority (CAA) shows that the 28 August 2023 failure in NATS’ flight planning system led to substantial knock-on disruption across airports and airlines, prompting an independent review and a detailed major incident report. Those documents highlighted how the loss of automated flight plan processing forced controllers to revert to manual procedures, sharply reducing system capacity and leaving thousands of passengers stranded or delayed.

More than a year after that incident, low-cost carriers argue that NATS has not moved fast enough to restore trust. Ryanair has linked recent disruption in summer schedules to what it describes as continuing weaknesses in air traffic control staffing and resilience, while Wizz Air has echoed industry frustration at operational constraints that carriers say are beyond their control but still damage their reliability in the eyes of travelers.

For passengers, the effect is familiar: long queues, missed connections and uncertainty about compensation rights. For airlines with ultra-tight schedules and high aircraft utilization, even short outages or local staffing shortages can cascade into full-day disruptions, and that is feeding louder public campaigns for structural change at the UK’s air navigation service provider.

Independent reviews exposed resilience gaps

Following the 2023 bank holiday outage, the CAA commissioned an independent panel to examine what went wrong in the NATS flight planning system and how the wider aviation system responded. The final report, published alongside NATS’ own major incident investigation, identified 34 recommendations covering NATS, airlines, airports, the CAA and the UK government, ranging from technical safeguards to governance and incident management measures.

The independent review pointed to shortcomings in resilience and contingency planning for the flight data system, as well as constraints in how quickly traffic capacity could be restored once the fault was identified. It also highlighted the wider impact on passengers, noting that airlines and airports faced considerable difficulty in providing care, assistance and re-routing on such a busy travel day, particularly when aircraft and crews were quickly displaced from their planned rotations.

Government publications show that ministers asked the CAA to track progress on implementing the recommendations, and a subsequent progress report in 2025 indicated that some measures had been completed while others would be addressed in the next NATS price control period from 2028 to 2033. That staged timetable has attracted criticism from carriers that want more immediate changes to operational resilience, arguing that passengers continue to bear the brunt of service failures.

Airlines maintain that the combination of high traffic volumes, aging systems in parts of the European air traffic network and limited redundancy leaves the region vulnerable to severe disruption when individual components fail. The UK outage has therefore become a touchpoint in wider debates about how quickly regulators and infrastructure providers should modernize technology that underpins cross-border aviation.

Low-cost carriers step up public pressure

Ryanair has taken one of the most confrontational public stances on NATS, using a series of corporate statements in 2026 to link repeated delays in UK airspace to staffing and management decisions at the provider. The airline has highlighted days when it says staff shortages at NATS facilities caused large numbers of delays, arguing that such disruption is avoidable and that passengers should not have to shoulder the operational and financial consequences.

In a July 2026 update, the carrier called for leadership change at NATS after what it described as yet another system failure that affected its network, drawing a direct connection between the 2023 technical collapse and more recent operational issues. According to the airline’s public statements, these episodes show a pattern of insufficient resilience, and it has urged the UK government and regulator to consider fundamental reforms.

Wizz Air has been less combative in its language but has aligned itself with broader industry calls for a more robust and predictable UK air traffic control system. As an ultra-low-cost carrier relying on rapid aircraft turnarounds and dense schedules from bases such as London Luton and Gatwick, the airline is particularly exposed to knock-on effects when slot restrictions or ATC delays build up across the day.

For both carriers, sustained disruption in UK airspace has strategic implications. The UK is a crucial market for short-haul European leisure travel, and operational reliability is central to the value proposition of low-cost airlines. Repeated ATC constraints risk eroding that proposition, potentially pushing airlines to adjust schedules, deploy aircraft elsewhere or re-evaluate growth plans at affected airports.

Regulatory and governance questions gather pace

The mounting pressure from Wizz Air and Ryanair comes as regulators continue to weigh how best to balance safety, service quality and cost efficiency in the governance of NATS. The company operates as a public-private partnership in which the UK government holds a significant share alongside airline and airport investors, and is subject to a price control framework overseen by the CAA.

Official documentation from the independent review and subsequent government statements indicates that regulators are already examining whether adjustments to that framework are needed to strengthen resilience, including potential changes in how investment in critical IT systems and staffing levels is incentivized. The progress report on the 2023 failure recommendations notes that some elements are explicitly being fed into the design of the next regulatory period for NATS, which will set performance and funding expectations into the early 2030s.

Airlines argue that this timeline may not reflect the urgency felt by travelers experiencing disruption in the peak summer season. They have urged policymakers to consider interim measures, such as tighter performance targets on delay minutes attributed to air traffic control, clearer accountability mechanisms for significant incidents, and more transparent reporting on staffing levels and system resilience.

At the same time, regulators and NATS emphasize in public documents that safety remains paramount and that any changes must preserve the UK’s strong safety record. This creates an inherently cautious policy environment, in which large-scale technology replacements and staffing restructures can take years to plan and implement even when there is consensus on direction.

Passenger rights and industry costs under scrutiny

The fallout from the 2023 NATS failure, and from subsequent days of disruption, has also sharpened focus on passenger protections and who ultimately bears the cost of air traffic control problems. The independent review commissioned by the CAA examined not only the technical causes of the outage but also the passenger experience, documenting difficulties travelers faced in accessing information, accommodation and alternative transport when flights were cancelled or heavily delayed.

The UK government has since acknowledged, in public speeches and statements, that consumer protections may need reinforcing in light of lessons from the NATS incident. The independent review’s recommendations included proposals for stronger enforcement tools for the CAA and for making alternative dispute resolution schemes mandatory across all airlines operating in the UK, to give passengers clearer routes for redress when things go wrong.

For airlines like Wizz Air and Ryanair, these discussions have direct financial implications. Under UK and European rules, carriers are obligated to provide care and assistance during disruption, but they are not generally required to pay fixed compensation when delays are caused by extraordinary circumstances outside their control, such as air traffic control failures. As a result, airlines often carry significant operational costs without being liable for statutory payouts, while passengers still experience major inconvenience.

The carriers’ calls for an overhaul of NATS can therefore be seen as part of a wider effort to shift the focus of accountability upstream, toward the infrastructure providers whose systems and staffing levels shape the reliability of Europe’s air traffic network. With peak summer travel underway and UK skies among the busiest in the region, the pressure on NATS, regulators and government to show tangible improvements is likely to intensify.

UK Civil Aviation Authority: NATS August 2023 system failure review

CAA news release on independent review of NATS failure

Ryanair corporate statement on NATS system failures

UK government statement on publication of NATS failure report