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

Return flights

02 Dec - 09 Dec	easyJet
02 Dec - 11 Dec	easyJet
03 Dec - 10 Dec	easyJet
06 Dec - 09 Dec	easyJet
08 Dec - 10 Dec	easyJet
07 Dec - 12 Dec	easyJet
06 Dec - 10 Dec	easyJet
08 Dec - 12 Dec	easyJet
10 Dec - 14 Dec	easyJet
09 Dec - 12 Dec	easyJet
21 Dec - 12 Jan	Ryanair
23 Dec - 12 Jan	Volotea
20 Dec - 01 Jan	Ryanair
23 Dec - 13 Jan	Volotea
31 Dec - 12 Jan	Vueling Airlines
31 Dec - 13 Jan	Vueling Airlines
31 Dec - 15 Jan	Vueling Airlines
31 Dec - 16 Jan	Vueling Airlines
24 Dec - 12 Jan	Vueling Airlines
24 Dec - 13 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 113€

Return flights