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

Return flights

05 Dec - 19 Dec	Turkish Airlines
30 Dec - 15 Jan	Air France
30 Dec - 19 Jan	Air France
28 Dec - 03 Jan	HiSky Europe
31 Dec - 07 Jan	Turkish Airlines
31 Dec - 10 Jan	Turkish Airlines
31 Dec - 11 Jan	Turkish Airlines
15 Dec - 01 Jan	Turkish Airlines
30 Dec - 11 Jan	Air France
25 Dec - 01 Jan	Turkish Airlines
20 Dec - 27 Dec	Turkish Airlines
25 Dec - 12 Jan	KLM

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 $830

Return flights