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

Return flights

30 Dec - 10 Jan	Wizz Air Malta
25 Dec - 28 Dec	Austrian Airlines
30 Dec - 01 Jan	Wizz Air Malta
18 Dec - 25 Dec	Wizz Air
18 Dec - 22 Dec	Wizz Air
23 Dec - 31 Dec	Wizz Air
27 Dec - 29 Dec	Wizz Air
25 Dec - 30 Dec	Austrian Airlines
18 Dec - 24 Dec	Wizz Air
27 Dec - 30 Dec	Wizz Air
26 Dec - 07 Jan	Austrian Airlines
26 Dec - 28 Dec	Austrian Airlines
25 Dec - 29 Dec	Austrian Airlines
31 Dec - 01 Jan	AJet
29 Dec - 02 Jan	Lufthansa
27 Dec - 03 Jan	Wizz Air
30 Dec - 02 Jan	Austrian Airlines
23 Dec - 03 Jan	Wizz Air
26 Dec - 03 Jan	Wizz Air Malta
23 Dec - 04 Jan	Wizz Air

Also check the deals for one-way flights from Basel to Bucharest 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 Basel to Bucharest in December from $155

Return flights