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

Return flights

08 Sep - 17 Sep	easyJet
08 Sep - 22 Sep	easyJet
08 Sep - 06 Oct	easyJet
08 Sep - 22 Sep	easyJet	direct
17 Sep - 26 Sep	easyJet
08 Sep - 10 Sep	easyJet
10 Sep - 17 Sep	easyJet
15 Sep - 17 Sep	easyJet
04 Sep - 17 Sep	easyJet
17 Sep - 25 Sep	easyJet
08 Sep - 15 Sep	easyJet
08 Sep - 06 Oct	easyJet	direct
04 Sep - 04 Oct	easyJet
27 Sep - 04 Oct	easyJet
29 Sep - 07 Oct	easyJet
28 Sep - 11 Oct	easyJet
14 Sep - 04 Oct	easyJet
27 Sep - 08 Oct	easyJet
28 Sep - 05 Oct	easyJet
26 Sep - 15 Oct	easyJet	direct

Also check the deals for one-way flights from Prague 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 Prague to Lisbon in September from 117€

Return flights