AirHint found the following cheapest return flights from Montreal (YUL) to Helsinki (HEL) in October 2026 (see full year).

Return flights

19 Oct - 26 Oct	British Airways
26 Oct - 02 Nov	British Airways
21 Oct - 28 Oct	British Airways
14 Oct - 21 Oct	British Airways
20 Oct - 27 Oct	British Airways
27 Oct - 03 Nov	British Airways
28 Oct - 04 Nov	British Airways
07 Oct - 14 Oct	British Airways
22 Oct - 29 Oct	British Airways
13 Oct - 20 Oct	British Airways
12 Oct - 19 Oct	British Airways
15 Oct - 22 Oct	British Airways
01 Oct - 08 Oct	British Airways
30 Oct - 06 Nov	British Airways
31 Oct - 07 Nov	British Airways

Also check the deals for one-way flights from Montreal 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.

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Cheapest return flights from Montreal to Helsinki in October from 697€

Return flights