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

Return flights

20 Aug - 09 Sep	Wizz Air
20 Aug - 27 Aug	Wizz Air
20 Aug - 26 Aug	Wizz Air
20 Aug - 28 Aug	Wizz Air
28 Aug - 03 Sep	Wizz Air
20 Aug - 25 Aug	Wizz Air
27 Aug - 02 Sep	Wizz Air Malta
27 Aug - 03 Sep	Wizz Air
18 Aug - 28 Aug	Wizz Air
13 Aug - 18 Aug	Wizz Air
28 Aug - 04 Sep	SWISS
21 Aug - 28 Aug	SWISS
28 Aug - 02 Sep	Wizz Air
27 Aug - 04 Sep	Wizz Air Malta
27 Aug - 30 Aug	Wizz Air
06 Aug - 22 Aug	SWISS
07 Aug - 13 Aug	Wizz Air
26 Aug - 16 Sep	Vueling Airlines
25 Aug - 02 Sep	Wizz Air
14 Aug - 04 Sep	Wizz Air

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 215€

Return flights