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

Return flights

31 Dec - 05 Jan	Aegean Airlines
31 Dec - 01 Jan	Aegean Airlines
31 Dec - 03 Jan	Aegean Airlines
31 Dec - 01 Jan	Aegean Airlines	direct
29 Dec - 01 Jan	arkia
29 Dec - 02 Jan	arkia
30 Dec - 02 Jan	Wizz Air
29 Dec - 30 Dec	arkia
31 Dec - 02 Jan	Wizz Air
29 Dec - 05 Jan	arkia
30 Dec - 05 Jan	Wizz Air
29 Dec - 30 Dec	Aegean Airlines	direct
29 Dec - 29 Dec	Aegean Airlines

Also check the deals for one-way flights from Sofia to Athens 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 Sofia to Athens in December from 197€

Return flights