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

Return flights

18 Dec - 21 Dec	TAROM
16 Dec - 21 Dec	TAROM
18 Dec - 22 Dec	TAROM
03 Dec - 07 Dec	Wizz Air Malta
06 Dec - 09 Dec	TAROM	direct
08 Dec - 11 Dec	Aegean Airlines	direct
04 Dec - 07 Dec	TAROM	direct
12 Dec - 16 Dec	Aegean Airlines	direct
08 Dec - 12 Dec	Aegean Airlines	direct
03 Dec - 07 Dec	Aegean Airlines	direct
31 Dec - 04 Jan	TAROM	direct
26 Dec - 05 Jan	TAROM	direct
31 Dec - 06 Jan	TAROM	direct

Also check the deals for one-way flights from Athens 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 Athens to Bucharest in December from 99€

Return flights