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

Return flights

02 Dec - 08 Dec	Air India
26 Dec - 05 Jan	Air India
21 Dec - 02 Jan	Air India
23 Dec - 05 Jan	Air India
21 Dec - 04 Jan	Air India
28 Dec - 18 Jan	Air India
01 Dec - 07 Dec	Air India
26 Dec - 04 Jan	Air India
28 Dec - 04 Jan	Air India
19 Dec - 10 Jan	Air India
29 Dec - 05 Jan	Air India
20 Dec - 04 Jan	Air India
10 Dec - 14 Dec	Norse Atlantic Airways (UK)
05 Dec - 10 Dec	IndiGo
21 Dec - 28 Dec	Finnair
20 Dec - 29 Dec	Finnair
20 Dec - 28 Dec	Finnair
19 Dec - 28 Dec	Finnair
17 Dec - 30 Dec	Finnair
15 Dec - 29 Dec	Finnair

Also check the deals for one-way flights from Bangkok to Zurich 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 Bangkok to Zurich in December from 545€

Return flights