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

Return flights

06 Oct - 13 Oct	WestJet
09 Oct - 15 Oct	Porter Airlines (Canada) Ltd
06 Oct - 20 Oct	WestJet
10 Oct - 13 Oct	WestJet
02 Oct - 05 Oct	WestJet
13 Oct - 21 Oct	WestJet
02 Oct - 13 Oct	WestJet
02 Oct - 08 Oct	Porter Airlines (Canada) Ltd
15 Oct - 20 Oct	WestJet
13 Oct - 22 Oct	WestJet
30 Oct - 03 Nov	Icelandair
26 Oct - 08 Nov	TAP
24 Oct - 01 Nov	Air Transat
31 Oct - 15 Nov	Air Transat

Also check the deals for one-way flights from Toronto to London 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 Toronto to London in October from $442

Return flights