Cheapest return flights from Ontario to Helsinki in September from $928

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

Return flights

26 Sep - 29 Sep British Airways
19 Sep - 22 Sep Iberia
09 Sep - 16 Sep Iberia
26 Sep - 28 Sep Iberia
29 Sep - 08 Oct Iberia
25 Sep - 05 Oct British Airways
12 Sep - 15 Sep British Airways
27 Sep - 29 Sep Iberia
18 Sep - 21 Sep Iberia
19 Sep - 21 Sep Iberia
29 Sep - 02 Oct Iberia

Also check the deals for one-way flights from Ontario to Helsinki 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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