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

Return flights

04 Dec - 07 Dec	Air Serbia
07 Dec - 14 Dec	Air Serbia
26 Dec - 03 Jan	Air Serbia
12 Dec - 14 Dec	Air Serbia
08 Dec - 12 Dec	Air Serbia
05 Dec - 07 Dec	Air Serbia
19 Dec - 24 Jan	Air Serbia
20 Dec - 03 Jan	Air Serbia
21 Dec - 04 Jan	Air Serbia
25 Dec - 29 Dec	LOT
02 Dec - 04 Dec	Ryanair
04 Dec - 08 Dec	Ryanair
31 Dec - 10 Jan	LOT
22 Dec - 05 Jan	Wizz Air Malta
20 Dec - 05 Jan	Wizz Air Malta
22 Dec - 29 Dec	Air Serbia
09 Dec - 13 Dec	Wizz Air Malta
29 Dec - 15 Jan	Wizz Air Malta
23 Dec - 05 Jan	KLM
29 Dec - 07 Jan	Wizz Air Malta

Also check the deals for one-way flights from Bucharest 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 Bucharest to Zurich in December from $192

Return flights