AirHint found the following cheapest return flights from Sofia (SOF) to Oslo (OSL) in October 2025 (see full year).

Return flights

09 Oct - 12 Oct	Norwegian	direct
16 Oct - 19 Oct	Norwegian	direct
09 Oct - 19 Oct	Norwegian	direct
02 Oct - 12 Oct	Norwegian	direct
02 Oct - 19 Oct	Norwegian	direct
12 Oct - 19 Oct	Wizz Air
02 Oct - 09 Oct	Norwegian	direct
13 Oct - 20 Oct	Wizz Air
05 Oct - 12 Oct	Wizz Air
12 Oct - 19 Oct	Norwegian	direct

Also check the deals for one-way flights from Sofia to Oslo in October.

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 Sofia to Oslo in October from 94€

Return flights