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

Return flights

31 Oct - 05 Nov	Air Serbia	direct
30 Oct - 05 Nov	Air Serbia	direct
13 Oct - 17 Oct	Air Serbia	direct
10 Oct - 13 Oct	Air Serbia
17 Oct - 19 Oct	Air Serbia
09 Oct - 13 Oct	Norwegian
20 Oct - 26 Oct	Air Serbia	direct
24 Oct - 26 Oct	Air Serbia	direct
24 Oct - 02 Nov	Air Serbia	direct
10 Oct - 12 Oct	Air Serbia
29 Oct - 02 Nov	Norwegian	direct
09 Oct - 12 Oct	Norwegian
03 Oct - 05 Oct	Air Serbia

Also check the deals for one-way flights from Oslo to Belgrade 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 Oslo to Belgrade in October from 124€

Return flights