Cheapest return flights from Helsinki to Sofia in September from 156€

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

Return flights

30 Sep - 02 Oct Ryanair
25 Sep - 28 Sep Ryanair
29 Sep - 02 Oct Ryanair
30 Sep - 03 Oct Ryanair
24 Sep - 01 Oct Ryanair
23 Sep - 28 Sep Ryanair
22 Sep - 28 Sep Ryanair
21 Sep - 25 Sep Ryanair
25 Sep - 29 Sep Ryanair
23 Sep - 26 Sep Ryanair
21 Sep - 27 Sep Ryanair
18 Sep - 23 Sep Ryanair
11 Sep - 25 Sep Ryanair
17 Sep - 22 Sep Ryanair
13 Sep - 01 Oct 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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