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

Return flights

15 Oct - 22 Oct	Wizz Air
16 Oct - 19 Oct	Wizz Air
24 Oct - 27 Oct	Air Serbia
16 Oct - 23 Oct	Air Serbia
18 Oct - 20 Oct	Air Serbia
03 Oct - 05 Oct	Wizz Air
21 Oct - 23 Oct	Wizz Air
16 Oct - 19 Oct	Air Serbia	direct
21 Oct - 23 Oct	Air Serbia	direct
18 Oct - 20 Oct	Air Serbia	direct

Also check the deals for one-way flights from Belgrade to Sofia 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 Belgrade to Sofia in October from 94€

Return flights