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

Return flights

17 Jul - 20 Jul	Air Serbia	direct
29 Jul - 31 Jul	Air Serbia	direct
19 Jul - 22 Jul	Air Serbia	direct
14 Jul - 16 Jul	Air Serbia
16 Jul - 18 Jul	Air Serbia	direct
13 Jul - 17 Jul	Air Serbia	direct
31 Jul - 03 Aug	Air Serbia
13 Jul - 24 Jul	Air Serbia	direct
07 Jul - 14 Jul	Air Serbia	direct
31 Jul - 03 Aug	Air Serbia	direct
14 Jul - 16 Jul	Air Serbia	direct

Also check the deals for one-way flights from Belgrade to Sofia in July.

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 July from 143€

Return flights