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

Return flights

11 Sep - 17 Sep	easyJet	direct
10 Sep - 17 Sep	easyJet	direct
24 Sep - 29 Sep	easyJet	direct
11 Sep - 15 Sep	easyJet	direct
10 Sep - 15 Sep	easyJet	direct
11 Sep - 16 Sep	easyJet	direct
25 Sep - 07 Oct	easyJet	direct
11 Sep - 30 Sep	easyJet	direct
25 Sep - 29 Sep	easyJet	direct
26 Sep - 29 Sep	TAP	direct
29 Sep - 01 Oct	TAP	direct
26 Sep - 01 Oct	TAP	direct
24 Sep - 04 Oct	easyJet
17 Sep - 22 Sep	easyJet	direct
29 Sep - 07 Oct	TAP	direct
30 Sep - 04 Oct	TAP
09 Sep - 31 Oct	easyJet	direct
27 Sep - 01 Oct	easyJet	direct
30 Sep - 01 Oct	easyJet	direct
24 Sep - 14 Oct	Vueling Airlines

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 $117

Return flights