Cheapest return flights from Oslo to Sofia in September from $119

Best time to book flights for Oslo (OSL) to Sofia (SOF) flights at AirHint

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

Return flights

07 Sep - 25 Sep Norwegian direct
07 Sep - 10 Sep Norwegian
21 Sep - 25 Sep Norwegian direct
11 Sep - 25 Sep Air Serbia
24 Sep - 28 Sep Air Serbia
26 Sep - 28 Sep Air Serbia
10 Sep - 24 Sep KLM
11 Sep - 25 Sep Norwegian direct
21 Sep - 28 Sep Norwegian direct
25 Sep - 28 Sep Lufthansa

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

Skyscanner

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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