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

Return flights

27 Aug - 29 Aug	Air Europa
15 Aug - 23 Aug	Ryanair
30 Aug - 07 Sep	Ryanair
27 Aug - 02 Sep	Air Europa
31 Aug - 07 Sep	Aer Lingus
29 Aug - 31 Aug	Wizz Air
07 Aug - 26 Aug	Wizz Air Malta
29 Aug - 08 Sep	Wizz Air
20 Aug - 30 Aug	TAP
11 Aug - 08 Sep	Ryanair
08 Aug - 11 Aug	Ryanair	direct
08 Aug - 14 Aug	Ryanair
15 Aug - 25 Aug	Ryanair	direct
01 Aug - 11 Aug	Ryanair	direct
01 Aug - 02 Sep	Ryanair
29 Aug - 22 Sep	Ryanair
18 Aug - 28 Aug	Vueling Airlines
29 Aug - 08 Sep	Ryanair	direct
30 Aug - 08 Sep	Ryanair
29 Aug - 19 Sep	Ryanair	direct

Also check the deals for one-way flights from Lisbon to Warsaw 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 Lisbon to Warsaw in August from $277

Return flights