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

Return flights

29 Sep - 06 Oct	Ryanair
15 Sep - 19 Sep	Ryanair
08 Sep - 13 Sep	Ryanair
22 Sep - 29 Sep	KLM
17 Sep - 24 Sep	Lufthansa
09 Sep - 13 Sep	Ryanair
15 Sep - 21 Sep	Ryanair
09 Sep - 16 Sep	Ryanair
13 Sep - 17 Sep	Ryanair
07 Sep - 11 Sep	Ryanair
10 Sep - 17 Sep	Lufthansa
29 Sep - 05 Oct	Ryanair
27 Sep - 03 Oct	Ryanair
28 Sep - 05 Oct	Ryanair
26 Sep - 02 Oct	Ryanair
01 Sep - 31 Oct	Ryanair
25 Sep - 02 Oct	Ryanair
18 Sep - 01 Oct	Ryanair

Also check the deals for one-way flights from Gdansk 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 Gdansk to Lisbon in September from 176€

Return flights