Vaccinated or recovered passengers no longer require a test, but must still be able to show valid proof of vaccination (or equivalent certificate).
All passengers who are not vaccinated or who have not recovered from Covid-19 aged 16 and over must have proof of a negative PCR test (not older than 72 hours) or a rapid antigen test (not older than 24 hours) before boarding. More information here.
Before entering Switzerland, an entry form must be completed by all passengers: swissplf.admin.ch/formular. Passengers from countries with a worrying variant travelling to Switzerland may also have to go into quarantine.
Entry into Switzerland is unrestricted for Swiss nationals, persons holding a residence permit, and authorised cross-border commuters. For nationals of all Schengen states, normal entry requirements apply.
Switzerland has eased the entry restrictions for persons arriving from non-Schengen countries and third countries who can prove they have been vaccinated.
The interactive travel check tool shows you what measures apply to you.
For more information, see this page.
A good tip: Contact the authorities ahead of your trip to check the applicable entry requirements.