AirHint found the following cheapest return flights from Athens (ATH) to Lisbon (LIS) in August 2025 (see full year).

Return flights

15 Aug - 28 Aug	Iberia
20 Aug - 09 Sep	Vueling Airlines
28 Aug - 16 Sep	Vueling Airlines
26 Aug - 16 Sep	Vueling Airlines
28 Aug - 11 Sep	Vueling Airlines
21 Aug - 02 Sep	easyJet
25 Aug - 04 Sep	Ryanair
21 Aug - 29 Aug	easyJet
02 Aug - 07 Aug	Iberia
28 Aug - 04 Sep	Ryanair
20 Aug - 28 Aug	SWISS
05 Aug - 11 Aug	KLM
05 Aug - 08 Aug	KLM
05 Aug - 19 Aug	KLM
26 Aug - 11 Sep	Vueling Airlines
28 Aug - 09 Sep	Vueling Airlines
28 Aug - 17 Sep	Vueling Airlines
15 Aug - 20 Aug	Iberia
06 Aug - 13 Aug	Vueling Airlines
15 Aug - 22 Aug	Wizz Air Malta

Also check the deals for one-way flights from Athens to Lisbon in August.

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 Athens to Lisbon in August from 231€

Return flights