AirHint found the following cheapest return flights from Porto (OPO) to Sofia (SOF) in July 2026 (see full year).

Return flights

02 Jul - 05 Jul	Ryanair
23 Jul - 30 Jul	Air Serbia
19 Jul - 23 Jul	Air Serbia
26 Jul - 30 Jul	Air Serbia
19 Jul - 25 Jul	Air Serbia
29 Jul - 13 Aug	Austrian Airlines
30 Jul - 13 Aug	Air Serbia
19 Jul - 26 Jul	Air Serbia
24 Jul - 31 Jul	Ryanair
31 Jul - 13 Aug	Vueling Airlines
20 Jul - 26 Jul	Ryanair
23 Jul - 23 Jul	Ryanair

Also check the deals for one-way flights from Porto 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 Porto to Sofia in July from $212

Return flights