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

Return flights

22 Aug - 09 Sep	Wizz Air
26 Aug - 16 Sep	Wizz Air Malta
27 Aug - 18 Sep	Wizz Air
25 Aug - 22 Sep	Wizz Air Malta
26 Aug - 02 Sep	SWISS
26 Aug - 09 Sep	Wizz Air
19 Aug - 17 Sep	Wizz Air Malta
19 Aug - 16 Sep	Wizz Air Malta
19 Aug - 15 Sep	Wizz Air Malta
18 Aug - 16 Sep	Wizz Air
26 Aug - 28 Aug	SWISS
25 Aug - 28 Aug	Wizz Air
06 Aug - 13 Aug	Wizz Air
20 Aug - 27 Aug	Wizz Air
21 Aug - 24 Aug	Wizz Air
26 Aug - 29 Aug	Wizz Air
20 Aug - 25 Aug	Wizz Air
28 Aug - 31 Aug	Wizz Air
24 Aug - 28 Aug	Wizz Air
25 Aug - 30 Aug	Wizz Air Malta

Also check the deals for one-way flights from Warsaw 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 Warsaw to Lisbon in August from 159€

Return flights