Cheapest return flights from Helsinki to Sofia in September from 151€

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

Return flights

17 Sep - 21 Sep Ryanair
17 Sep - 22 Sep Ryanair
14 Sep - 21 Sep Ryanair
19 Sep - 22 Sep Ryanair
13 Sep - 20 Sep airBaltic
08 Sep - 15 Sep Ryanair
14 Sep - 20 Sep Ryanair
07 Sep - 21 Sep Ryanair
05 Sep - 08 Sep Ryanair
11 Sep - 15 Sep Ryanair

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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