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

Return flights

06 Dec - 09 Dec	easyJet
10 Dec - 14 Dec	easyJet
06 Dec - 07 Dec	easyJet
06 Dec - 13 Dec	easyJet
04 Dec - 07 Dec	easyJet
02 Dec - 06 Dec	easyJet
04 Dec - 08 Dec	easyJet
02 Dec - 13 Dec	Vueling Airlines
24 Dec - 10 Jan	Vueling Airlines
26 Dec - 02 Jan	Air Serbia
05 Dec - 08 Dec	Ryanair
19 Dec - 24 Dec	Ryanair
31 Dec - 10 Jan	Vueling Airlines
23 Dec - 02 Jan	Vueling Airlines
23 Dec - 10 Jan	Volotea
30 Dec - 10 Jan	Volotea
24 Dec - 06 Jan	Vueling Airlines
24 Dec - 03 Jan	Vueling Airlines
20 Dec - 10 Jan	Volotea
25 Dec - 10 Jan	Vueling Airlines

Also check the deals for one-way flights from Porto 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 Porto to Athens in December from $170

Return flights