Swiss (LX, Zurich) has confirmed to ch-aviation that it is assessing whether to seek damages from Swiss air navigation service provider Skyguide following an IT failure that disrupted flight operations on June 21, 2026, based on a recent ruling by the European Court of Justice (ECJ).

First reported by Neue Zürcher Zeitung, a spokesperson for the airline confirmed to ch-aviation that the carrier was analysing whether the ruling applies to the incident and whether it is enforceable under the Switzerland-European Union bilateral air transport agreement.

The outage led to the closure of Swiss airspace, which Swiss said forced the cancellation of 14 flights, affecting about 1,750 passengers, causing widespread delays, missed connections, and last-minute rescheduling across the carrier's network. While Swiss has not disclosed the value of any claim, it said: "Besides the operational burdens, such events inevitably result in additional financial costs."

Explaining its legal considerations, the airline said: "In light of the recent ECJ ruling in case C-408/24 – Austrian Airlines v. Republic of Austria – we are currently analysing whether and to what extent events such as the IT outage of June 21 fall under its purview. The ruling confirms that Article 8 of the SES [Single European Sky] Regulation protects the economic interests of airspace users and that airlines can derive rights directly from the SES Regulation in the event of operational disruptions and claim compensation for purely financial losses. We are currently examining the relevance of this ruling for Switzerland, for example, with regard to its potential adoption under the bilateral air transport agreement. This examination is not yet complete."

Skyguide responds

In a statement, Skyguide said the disruption was caused by a technical fault affecting radar displays at its Dübendorf control centre and Zurich tower after restricted airspace for a peace conference was added at short notice. As a precaution, it briefly activated a "Clear the Sky" procedure, although aircraft already approaching Zurich and flights carrying conference delegations were allowed to land.

Engineers quickly fixed the problem and flight operations gradually returned to normal. Skyguide temporarily reduced overflight capacity as a precaution but said Zurich Airport was not directly affected, although some flight disruptions continued for a short time.

"We acknowledge that Swiss is examining this matter. Skyguide does not comment on hypothetical or potential legal action," a spokesperson for the Swiss air navigation company told ch-aviation.

The bottom line

"Skyguide is an indispensable partner for us," Swiss stated. "Especially in a complex environment like air traffic, we must work closely together to ensure reliable travel for our passengers."

It added: "We maintain close communication with Skyguide – our shared goal is a safe, stable, and efficient infrastructure for Swiss aviation. We expect the performance and quality of air traffic control to be commensurate with the costs.

"Recent incidents demonstrate the importance of continuously improving the resilience of our systems and learning from these events. We are counting on Skyguide to embrace its responsibility and fully utilise this potential – in the interest of our passengers and the entire Swiss aviation sector," the airline said.