AirHint found the following cheapest return flights from Porto (OPO) to Athens (ATH) in January 2026 (see full year).

Return flights

09 Jan - 23 Jan	Ryanair
22 Jan - 26 Jan	easyJet
23 Jan - 26 Jan	Ryanair
30 Jan - 01 Feb	Ryanair
30 Jan - 02 Feb	Ryanair
16 Jan - 02 Feb	Vueling Airlines
16 Jan - 19 Jan	Ryanair
16 Jan - 18 Jan	Ryanair
21 Jan - 23 Jan	easyJet
09 Jan - 18 Jan	Ryanair
20 Jan - 24 Jan	Vueling Airlines
20 Jan - 23 Jan	Vueling Airlines
20 Jan - 09 Feb	Vueling Airlines
19 Jan - 22 Jan	Ryanair
20 Jan - 02 Feb	Vueling Airlines
21 Jan - 09 Feb	Vueling Airlines
16 Jan - 05 Feb	Vueling Airlines
21 Jan - 02 Feb	Vueling Airlines
20 Jan - 10 Feb	Vueling Airlines
20 Jan - 07 Feb	Vueling Airlines

Also check the deals for one-way flights from Porto to Athens in January.

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 January from 138€

Return flights