What the official source says, who checks it, and the cheapest flights out of the country if you need to book one.
Switzerland
May be asked for
The official source says you may be asked for one on arrival or at boarding. Checked by border control on arrival.
Switzerland is in the Schengen area: the rule is shared by all its countries and applies to non-EU travellers.
“You may also have to produce other supporting documents to border officials upon arrival such as an invitation letter, proof of lodging, return or round-trip ticket.”
Source: European Union (Your Europe) · see the source · checked on 12 October 2026
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Onward ticket required · 12
May be asked for · 21
No official rule found · 6
Rules taken from official sources (governments, embassies), with their date. They change: check before you leave, and with your airline.