AirHint found the following cheapest one-way flights from Geneva (GVA) to Barcelona (BCN) in September 2025 (see full year).

One-Way flights

18 Sep	Vueling Airlines	direct
16 Sep	Vueling Airlines	direct
28 Sep	Vueling Airlines	direct
17 Sep	Vueling Airlines	direct
29 Sep	Vueling Airlines	direct
25 Sep	Vueling Airlines	direct
22 Sep	Vueling Airlines	direct
24 Sep	Vueling Airlines	direct
02 Sep	Vueling Airlines	direct
08 Sep	Vueling Airlines	direct

Also check the deals for return flights from Geneva to Barcelona 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 one-way flights from Geneva to Barcelona in September from 24€

One-Way flights