AirHint found the following cheapest return flights from Zurich (ZRH) to Singapore (SIN) in September 2025 (see full year).

Return flights

16 Sep - 23 Sep	Etihad Airways
13 Sep - 20 Sep	Air India
03 Sep - 13 Sep	Air India
01 Sep - 08 Sep	Etihad Airways
17 Sep - 24 Sep	Etihad Airways
09 Sep - 14 Sep	Finnair
02 Sep - 10 Sep	Finnair
02 Sep - 09 Sep	Finnair
03 Sep - 14 Sep	Finnair
17 Sep - 23 Sep	KLM
22 Sep - 10 Oct	KLM
29 Sep - 05 Oct	Finnair
19 Sep - 12 Oct	KLM
30 Sep - 07 Oct	Finnair
25 Sep - 10 Oct	KLM
29 Sep - 09 Oct	KLM
26 Sep - 07 Oct	IndiGo
26 Sep - 11 Oct	IndiGo
30 Sep - 07 Oct	Singapore Airlines	direct
19 Sep - 12 Oct	Singapore Airlines	direct

Also check the deals for one-way flights from Zurich to Singapore in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Zurich to Singapore in September from $606

Return flights