Cheapest return flights from Ontario to Helsinki in October from $693

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

Return flights

21 Oct - 28 Oct British Airways
22 Oct - 29 Oct British Airways
10 Oct - 20 Oct Frontier Airlines
23 Oct - 30 Oct British Airways
11 Oct - 20 Oct British Airways
18 Oct - 25 Oct Iberia
03 Oct - 05 Oct British Airways
12 Oct - 19 Oct British Airways
09 Oct - 19 Oct British Airways
02 Oct - 05 Oct British Airways

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

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.

Book a cheap hotel in Helsinki

Cheap car rent in Helsinki

Feel free to contact us with any feedback or request another flight research.