An updated version of this article – including 700 cut flights as of June 29th – is available here. 

From Geneva, the company is dropping five flights per week to London Heathrow, while from Zurich flights to Nuremberg are suspended from July to October.

The frequency is also reduced for flights to Gdansk, Dresden and Warsaw.

The Zurich-Vienna flights will be subcontracted to Austrian Airlines, SWISS’ codeshare partner.

On long-haul routes, one Zurich to San Francisco flight per week will be eliminated.

In all 2 percent of passengers — tens of thousands of travellers — who booked flights with SWISS in July and August are affected by these changes.

The shuffle is due mostly to staffing shortage and other air traffic issues, such as “bottlenecks in air traffic control in Europe, at ground service providers around the world, as well as at SWISS”, company spokesperson said.

Oliver Buchhofer, head of the airline’s Operations Department told Swiss media that cancellations and reductions are lingering consequences the Covid pandemic, which “pose an unprecedented challenge for the entire airline industry, and also for SWISS”.

Customers who already booked any of these flights will be notified by email and offered a travel alternative. They will also have the possibility of being reimbursed, the company said.

If SWISS cancels your scheduled and paid-for flight, you can request full refund of your ticket here.

READ MORE: Airport chaos in Europe: What are your rights if flights are delayed or cancelled?