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

Return flights

22 Sep - 01 Oct	Ryanair
27 Sep - 07 Oct	Ryanair
26 Sep - 03 Oct	Ryanair
22 Sep - 26 Sep	Ryanair
26 Sep - 03 Oct	Ryanair	direct
29 Sep - 17 Oct	Ryanair	direct
29 Sep - 03 Oct	Ryanair	direct
03 Sep - 09 Sep	Ryanair
21 Sep - 26 Oct	Ryanair
26 Sep - 30 Sep	Ryanair
25 Sep - 30 Sep	Ryanair
18 Sep - 26 Sep	Ryanair
03 Sep - 08 Sep	Ryanair
24 Sep - 01 Oct	Ryanair
03 Sep - 10 Sep	Ryanair
05 Sep - 08 Sep	Ryanair
08 Sep - 15 Sep	Ryanair
08 Sep - 16 Sep	Ryanair
26 Sep - 01 Oct	Ryanair
29 Sep - 06 Oct	Ryanair

Also check the deals for one-way flights from Warsaw to Lisbon in September.

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 September from 177€

Return flights