Flights Cancelled Across Scotland After NATS Prestwick Air Traffic Control Issue

Flights were cancelled and delayed across Scotland on Monday after a technical issue at National Air Traffic Services’ (NATS) Prestwick control centre prompted air traffic restrictions, disrupting schedules from major hubs such as Edinburgh and Glasgow to regional island routes.

What happened, and why it affected so many routes

Published coverage indicates the disruption began early Monday, September 21, 2026, when a network-related problem emerged at NATS’ Prestwick centre, the facility responsible for controlling significant portions of airspace over Scotland. As a standard safety measure, traffic regulations were introduced to manage demand while the issue was investigated and resolved.

NATS later reported that the fault had been fixed and that operations were running at full capacity, while work continued with airports and airlines to unwind residual delays. Even after a fix, cancellations can continue as aircraft and crews end up out of position, and inbound flights arrive late enough to knock subsequent departures off schedule.

The episode arrived less than two weeks after a separate, major NATS incident on September 8 that triggered widespread UK disruption. NATS has described Monday’s Prestwick problem as unrelated to that earlier event, but the back-to-back failures have increased pressure on the resilience of the UK’s air traffic control systems.

Airports and airlines hit: from Edinburgh and Glasgow to island links

Disruption was visible across Scotland’s busiest airports, with Edinburgh and Glasgow among those experiencing significant departure and arrival delays, and a knock-on effect felt beyond Scotland. Reports also pointed to impacts on parts of Northern England and Northern Ireland, reflecting how airspace flow constraints in one region can propagate through the wider network.

Regional connectivity was also affected. Highlands and Islands Airports Limited (HIAL), which operates multiple airports across the Highlands and islands, reported network-wide schedule impacts linked to the Prestwick issue, and noted that disruption could continue even after the technical problem was resolved.

Loganair, a key carrier for Scotland’s domestic and island services, listed cancellations connected to the NATS disruption. Published reporting highlighted impacts on flights involving destinations such as Islay, Tiree, and Kirkwall, illustrating how technical constraints at a mainland control centre can quickly affect lifeline routes where alternatives are limited.

Scale of cancellations and delays, and what travelers should expect next

By midday Monday, aviation analytics estimates cited in published coverage indicated that roughly 200 flights had been cancelled or otherwise did not operate as planned, with additional services delayed. Separately, early tallies referenced by analysts in UK media suggested dozens of cancellations at that point, with the number expected to rise as the day progressed.

Even when air traffic control capacity returns to normal, disruption can persist into the evening peak and, in some cases, into the following day. Edinburgh Airport’s chief executive was quoted in Scottish coverage as expecting it could take the rest of Monday and possibly into Tuesday, September 22, to get operations fully back on track.

For passengers, that typically translates into last-minute gate changes, rolling delays that move hour by hour, and rebookings that may not align neatly with original plans. Travelers on multi-leg itineraries, especially those connecting via London or other hubs, can experience compounded disruption if an early cancellation triggers missed onward flights.

Passenger rights: rebooking, care, and compensation guidance

The UK Civil Aviation Authority (CAA) issued guidance on September 21, 2026, addressing passenger compensation and outlining where travelers can find information on rights for delays and cancellations linked to the NATS incident at Prestwick. The CAA’s guidance emphasizes that entitlements can differ depending on the circumstances behind a disruption.

In practical terms, passengers with cancelled flights are generally looking at two immediate needs: getting rebooked on the next available service (which may be later the same day or the following day) and securing “duty of care” support when waits extend for hours. Depending on the airline and the length of the delay, that can include refreshments, meals, and, where necessary, hotel accommodation and transport to lodging.

Compensation is more complex. Under the UK’s post-Brexit passenger rights framework, airlines may not owe fixed compensation when cancellations or long delays result from extraordinary circumstances outside the carrier’s control. However, travelers may still be entitled to refunds or rerouting, and to reasonable care during extended disruption. Passengers are typically advised to keep receipts for eligible expenses, retain proof of travel disruption, and submit claims through the airline’s standard channels.