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

Return flights

08 Dec - 23 Dec	KLM
04 Dec - 11 Dec	Wizz Air Malta
01 Dec - 14 Dec	Pegasus Airlines
16 Dec - 30 Dec	Ryanair
25 Dec - 01 Jan	Wizz Air Malta
11 Dec - 18 Dec	TAROM
11 Dec - 14 Dec	Animawings
30 Dec - 21 Jan	Ryanair
24 Dec - 31 Dec	Wizz Air Malta
20 Dec - 27 Dec	Ryanair
19 Dec - 10 Jan	Ryanair
19 Dec - 02 Jan	Ryanair
28 Dec - 07 Jan	Wizz Air Malta
29 Dec - 10 Jan	Pegasus Airlines
22 Dec - 29 Dec	TAROM
29 Dec - 11 Jan	TAROM
28 Dec - 11 Jan	Wizz Air Malta
18 Dec - 09 Jan	Wizz Air
18 Dec - 06 Jan	Wizz Air

Also check the deals for one-way flights from Bucharest 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 Bucharest to Singapore in December from $654

Return flights