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

Return flights

31 Jul - 08 Aug	Ryanair
31 Jul - 05 Aug	Ryanair
28 Jul - 08 Aug	Norwegian Air Sweden AOC	direct
31 Jul - 03 Aug	Ryanair
28 Jul - 03 Aug	Norwegian Air Sweden AOC
28 Jul - 04 Aug	Norwegian Air Sweden AOC
27 Jul - 01 Aug	Ryanair
27 Jul - 30 Jul	Ryanair
27 Jul - 31 Jul	Ryanair
28 Jul - 04 Aug	Norwegian Air Sweden AOC	direct
30 Jul - 06 Aug	Pegasus Airlines
28 Jul - 31 Jul	Norwegian Air Sweden AOC
27 Jul - 28 Jul	Ryanair

Also check the deals for one-way flights from Helsinki 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 Helsinki to Sofia in July from 276€

Return flights