UK Air Traffic System Hits Again, 25,000 Ryanair Passengers Disrupted

NATS faced a second technical failure at its Prestwick centre, causing flight restrictions that disrupted over 25,000 Ryanair passengers and delayed more than 140 flights. The incident followed a September 8 software glitch that cancelled 2,000+ flights. Airlines are demanding action, while NATS st…

By Felo News Desk · Published Tue, 22 Sep 2026 05:24:20 GMT

On Monday, Britain’s air traffic control provider, NATS, experienced a second technical breakdown in less than two weeks, this time at its Prestwick centre in Scotland. The fault forced the company to impose flight restrictions that left more than 25,000 Ryanair passengers in limbo and delayed over 140 of the airline’s flights. The incident follows a September 8 software glitch that had already caused the cancellation of more than 2,000 flights across the UK.

What Triggered the Prestwick Disruption?

NATS identified the problem as a connectivity issue within a segment of its network that supports the Scottish operation. Engineers were quick to isolate the fault, but the loss of network stability meant controllers could no longer safely manage all inbound and outbound traffic. As a precaution, NATS limited the number of aircraft that could enter the affected airspace, ensuring that the reduced traffic load could be handled without compromising safety.

The company confirmed that the fault was unrelated to the earlier September 8 incident, which stemmed from a software defect that unfolded within a millisecond. In that case, a flaw in the National Airspace System triggered a chain of events that lasted roughly six hours and led to widespread cancellations. NATS has stated that the two failures involve distinct technical problems: a network connectivity issue versus a software bug.

Impact on Flights and Passengers

While the restrictions were in place, airports across Scotland, Northern Ireland and northern England reported significant delays and cancellations. Edinburgh, Glasgow, Manchester and Belfast all experienced disruptions, with flights either grounded or delayed for hours. Because airlines operate on interconnected networks of crews and aircraft, a glitch in one sector can ripple through the entire system, causing knock‑on delays even after the original fault is fixed.

Ryanair, the airline most heavily affected by the Prestwick fault, announced that more than 140 of its flights were delayed and that the disruption would impact roughly 25,000 of its passengers. The figure refers specifically to Ryanair travellers, not the total number of passengers affected across all carriers. Passengers were urged to check with their airlines directly, as some delays could persist even after the technical issue was resolved.

Airlines Demand Action and NATS Responds

The second failure has reignited calls from airlines for stronger oversight and improvements to Britain’s air traffic control infrastructure. Ryanair, in particular, has demanded that NATS chief executive Martin Rolfe step down, citing the repeated disruptions as unacceptable to passengers. Other carriers have echoed the sentiment, urging the provider to enhance system resilience and prevent future outages.

In response, NATS issued a public apology to affected passengers and emphasized that safety remains its top priority. The company is working closely with airports and airlines to lift remaining restrictions and minimize further inconvenience. NATS has also released preliminary findings from the September 8 incident, outlining mitigation measures that are already in place while a permanent software fix is being developed and tested.

What Happens Next?

Engineers are continuing to monitor the Prestwick network to ensure stability, while NATS is coordinating with airlines to clear the backlog of delayed flights. Airports are offering assistance to stranded passengers, and airlines are providing updates through their websites and customer service lines. The aviation industry is awaiting a comprehensive review from NATS to determine how to bolster system resilience and prevent a recurrence of such disruptions.

Passengers can expect the restrictions to be lifted gradually as the network stabilises, but some delays may persist due to the interconnected nature of flight operations. Airlines will keep travellers informed of any changes, and NATS will publish further updates as the situation evolves.

Key facts

NATS faced a second fault at Prestwick, affecting 25,000 Ryanair passengers
The issue was a connectivity problem, unrelated to the September 8 software glitch
Flights across Scotland, Northern Ireland and northern England were delayed or cancelled
Airlines, especially Ryanair, are demanding action and leadership changes
NATS has apologized and is working to lift restrictions and improve resilience

Why it matters

Frequent air traffic control failures undermine passenger confidence, disrupt travel plans, and strain airline operations, highlighting the need for robust, reliable air traffic systems.

Frequently asked questions

What caused the Prestwick fault?

A connectivity issue within part of NATS’s network that supports the Scottish operation

How many passengers were affected by the latest incident?

Over 25,000 Ryanair passengers were disrupted, with more than 140 flights delayed

Is the new fault related to the September 8 glitch?

No, NATS confirmed the two incidents are unrelated; one was a network connectivity issue, the other a software defect

What steps is NATS taking to prevent future disruptions?

NATS is reviewing its systems, implementing mitigation measures, and developing a permanent software fix while coordinating with airlines and airports