Cheapest return flights from Helsinki to Sofia in September from 148€

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

Return flights

08 Sep - 12 Sep Ryanair
05 Sep - 11 Sep Ryanair
20 Sep - 23 Sep Ryanair
23 Sep - 27 Sep Ryanair
27 Sep - 25 Oct airBaltic
19 Sep - 21 Sep Ryanair
07 Sep - 08 Sep Ryanair
10 Sep - 13 Sep Ryanair
18 Sep - 23 Sep Ryanair
20 Sep - 27 Sep airBaltic

Also check the deals for one-way flights from Helsinki to Sofia in September.

Skyscanner

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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