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

Return flights

07 Dec - 10 Dec	easyJet
07 Dec - 11 Dec	Vueling Airlines
21 Dec - 03 Jan	Vueling Airlines
21 Dec - 02 Jan	Vueling Airlines
21 Dec - 04 Jan	Vueling Airlines
21 Dec - 06 Jan	Vueling Airlines
24 Dec - 03 Jan	Vueling Airlines
29 Dec - 04 Jan	Vueling Airlines
29 Dec - 03 Jan	Vueling Airlines
29 Dec - 06 Jan	Vueling Airlines
28 Dec - 04 Jan	Vueling Airlines
28 Dec - 03 Jan	Vueling Airlines

Also check the deals for one-way flights from Bilbao 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 Bilbao to Athens in December from 107€

Return flights