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

Return flights

15 Jul - 22 Jul	Ryanair
23 Jul - 25 Jul	Ryanair
21 Jul - 24 Jul	Wizz Air Malta
16 Jul - 23 Jul	Wizz Air Malta
31 Jul - 31 Aug	Ryanair
18 Jul - 28 Jul	Ryanair
20 Jul - 23 Jul	Air Serbia
20 Jul - 22 Jul	Air Serbia
12 Jul - 19 Jul	easyJet

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 236€

Return flights