There is a staff shortage at Swiss. The parent company Lufthansa helps out for a few months on the routes between Zurich and Frankfurt as well as Munich. Some courses will be served temporarily by the Kranich airline from June 2022.
The changes can already be seen in the booking systems of both airlines. A Swiss spokesman told Aviation.Direct: "Between June and October, some of the flights from Zurich to Munich and Frankfurt will be temporarily taken over by Lufthansa due to an internal group portfolio optimization, the connections are still guaranteed".
When asked how many aircraft will be operated by Helvetic Airways on behalf of Swiss in midsummer 2022, the media officer said: "In addition to the six Helvetic aircraft operated all year round for Swiss, further Helvetic aircraft will be flexibly operated in midsummer to cover the additional seasonal demand for Swiss in the summer be deployed".