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

Return flights

08 Dec - 23 Jan	Etihad Airways
08 Dec - 29 Dec	KLM
08 Dec - 16 Dec	KLM
10 Dec - 17 Dec	AJet
08 Dec - 10 Dec	Etihad Airways
07 Dec - 24 Dec	AJet
11 Dec - 17 Dec	KLM
09 Dec - 17 Dec	Turkish Airlines
14 Dec - 29 Dec	AJet
14 Dec - 21 Dec	AJet
13 Dec - 27 Dec	AJet
29 Dec - 29 Jan	SunExpress
29 Dec - 16 Jan	SunExpress
14 Dec - 01 Jan	AJet
29 Dec - 09 Jan	SunExpress
11 Dec - 06 Jan	AJet
14 Dec - 06 Jan	AJet
29 Dec - 10 Jan	SunExpress
27 Dec - 15 Jan	Pegasus Airlines
16 Dec - 01 Jan	easyJet

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

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 December from $637

Return flights