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

One-Way flights

06 Sep	Vueling Airlines	direct
03 Sep	Vueling Airlines	direct
17 Sep	Vueling Airlines	direct
10 Sep	Vueling Airlines	direct
24 Sep	Vueling Airlines	direct
22 Sep	Vueling Airlines	direct
20 Sep	Vueling Airlines	direct
04 Sep	Wizz Air
11 Sep	Wizz Air
13 Sep	Norwegian Air Sweden AOC	direct

Also check the deals for return flights from Barcelona to Oslo 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 Barcelona to Oslo in September from 30€

One-Way flights