Geneva, 21 June 2026 – Following a technical disruption at Skyguide on Sunday morning, operations at Zurich Airport have returned to normal. Skyguide continues to operate with slightly reduced capacity for overflights. The systems are stable, and safety was maintained at all times.
Following a technical disruption at the air navigation service provider Skyguide this morning, flight operations at Zurich Airport are once again running without restrictions. For overflights, Skyguide is currently operating with slightly reduced capacity.
A technical disruption caused restrictions in the airspace east of Bern on the morning of 21 June. The radar display at the Dübendorf control centre and Zurich Tower was affected. The disruption was triggered by the integration of the visualisation of the restricted airspace over the Bürgenstock area. This was implemented at short notice because the decision to proceed with the conference was only confirmed on Saturday, 20 June.
As a precautionary measure, Skyguide initiated a “Clear the Sky” procedure early in the morning. Aircraft already on approach to Zurich Airport were exempt from this measure. All delegations attending the Peace Conference were also able to land as planned. Safety was maintained at all times.
Skyguide specialists were able to quickly identify and isolate the issue, allowing operations to be gradually restored. As a precaution, Skyguide will maintain a slight reduction in overflight capacity until 08:00 on Monday, 22 June. As additional airspace sectors are being opened, the operational impact of the technical restriction is expected to be minimal. Zurich Airport is not affected by this capacity reduction. Nevertheless, the brief system outage may continue to have an impact on flight operations in Zurich for some time.
Skyguide apologises to the affected partners, airlines and their passengers for the inconvenience caused. Safety remains Skyguide’s highest priority at all times. Skyguide continues to ensure support for the security arrangements surrounding the Peace Conference.