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

Return flights

24 Sep - 29 Sep	easyJet	direct
29 Sep - 07 Oct	TAP	direct
25 Sep - 07 Oct	easyJet	direct
24 Sep - 16 Oct	easyJet
10 Sep - 15 Sep	easyJet	direct
25 Sep - 09 Oct	SWISS	direct
25 Sep - 29 Sep	easyJet	direct
27 Sep - 30 Sep	TAP	direct
29 Sep - 01 Oct	TAP	direct
24 Sep - 09 Oct	easyJet
10 Sep - 17 Sep	easyJet	direct
24 Sep - 04 Oct	easyJet
12 Sep - 15 Sep	easyJet	direct
17 Sep - 21 Sep	easyJet	direct
12 Sep - 16 Sep	easyJet	direct
17 Sep - 24 Sep	easyJet	direct
27 Sep - 29 Sep	easyJet	direct
27 Sep - 01 Oct	easyJet	direct
24 Sep - 16 Oct	SWISS	direct
24 Sep - 09 Oct	SWISS	direct

Also check the deals for one-way flights from Lisbon to Geneva 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 Lisbon to Geneva in September from 104€

Return flights