Wick and Inverness hit by disruption after Prestwick ATC technical issue

Travel disruption rippled across Scotland on Monday after a technical issue at National Air Traffic Services’ Prestwick air traffic centre prompted restrictions that affected flights at regional airports including Inverness and Wick John O’Groats.

What happened at Prestwick and why it mattered

Published coverage indicates the problem began early on Monday, September 21, 2026, when NATS reported a technical issue at its Prestwick centre in Scotland. The centre plays a central role in managing air traffic services across Scotland and parts of the wider UK network, so even a short-lived system problem can quickly translate into limits on how many aircraft can be handled safely at once.

NATS stated that the issue was fixed, and that work was underway with airports and airlines to remove remaining restrictions safely. Even after a fix, air traffic management restrictions can continue for hours as flight plans are re-sequenced and aircraft and crews end up out of position across the network.

Multiple reports described the incident as a systems connectivity issue, with some coverage also pointing to problems affecting flight data processing used to manage traffic flows. Regardless of the specific technical component involved, the immediate operational result was the same: capacity was reduced, and departures and arrivals slowed across a large part of Scottish-controlled airspace.

How Wick and Inverness services were affected

Inverness Airport and Wick John O’Groats Airport both saw impacts as the restrictions filtered into local schedules. Regional airports are particularly exposed during network slowdowns because there are typically fewer flights each day, meaning a single cancellation or extended delay can eliminate same-day travel options for some passengers.

At Inverness, published coverage described delayed and cancelled flights during the morning as the Prestwick issue unfolded. Airports and airlines generally respond to such restrictions by holding flights on the ground, staggering departures, and adjusting turnaround times, which can quickly create queues for outbound services and missed inbound aircraft rotations.

Wick is a smaller airport serving the far north of mainland Scotland, and disruption there can be especially consequential for travellers connecting onward through larger hubs. When an inbound aircraft cannot depart on time from its origin or cannot secure an arrival slot, the resulting knock-on effect can remove later legs from the schedule, including the return flight passengers may be relying on.

Knock-on effects across Scotland and the UK network

While Wick and Inverness were among the airports affected, the disruption was not limited to the Highlands. Published coverage described delays and cancellations at Scotland’s larger airports as well, including Glasgow and Edinburgh, with impacts also extending to Northern Ireland and parts of northern England.

Several airport operators used passenger-facing channels to note that the technical issue had been resolved but that delays could continue due to the network-wide knock-on effect. This pattern is typical: when a control centre introduces flow restrictions, flights are held back at origin airports, aircraft arrive late to their next sectors, and schedules can remain unstable well after systems return to normal.

The timing also drew attention because it followed a separate recent NATS technical incident earlier in September that caused widespread travel disruption. In the September 21 event, NATS indicated the Prestwick problem was distinct from the earlier incident, but the proximity of the two events increased scrutiny on resilience and contingency planning across the system.

What passengers can do today if their flight is delayed or cancelled

Travellers with flights to or from Inverness or Wick are likely to see the most accurate updates directly in airline flight status tools and airport departure/arrival boards, since restrictions can change hour by hour as air traffic regulations are lifted and backlogs are cleared. In practice, rebooking options can be limited on regional routes, so earlier action often provides more alternatives.

For passengers affected by cancellations or long delays, publicly available guidance from the UK Civil Aviation Authority outlines consumer rights and how compensation rules typically apply. When disruption stems from air traffic control system issues, eligibility for compensation can depend on the circumstances, but airlines still have obligations around care and assistance such as meals, refreshments, and where necessary accommodation during extended disruption.

Travellers connecting onward from Inverness or Wick may also want to check any separate onward bookings, including rail or hotel reservations, because a relatively short delay in the morning can cascade into missed evening connections. Where possible, allowing extra buffer time for same-day onward travel can reduce the risk of additional costs when schedules remain unstable later in the day.