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

Return flights

23 Oct - 27 Oct	Scandinavian Airlines
20 Oct - 03 Nov	British Airways
20 Oct - 31 Oct	WestJet
17 Oct - 08 Nov	Scandinavian Airlines
07 Oct - 14 Oct	Scandinavian Airlines
24 Oct - 27 Oct	Scandinavian Airlines
17 Oct - 24 Oct	Scandinavian Airlines
03 Oct - 07 Oct	Delta
27 Oct - 03 Nov	Lufthansa
17 Oct - 19 Oct	Scandinavian Airlines
15 Oct - 25 Oct	Scandinavian Airlines
01 Oct - 02 Oct	WestJet

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

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

Cheapest return flights from Toronto to Helsinki in October from $511

Return flights