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

Return flights

13 Oct - 08 Nov	WestJet
27 Oct - 02 Nov	Icelandair
31 Oct - 16 Nov	Icelandair
24 Oct - 30 Oct	Icelandair
17 Oct - 31 Oct	Icelandair
15 Oct - 08 Nov	WestJet
12 Oct - 20 Oct	Aer Lingus
21 Oct - 15 Nov	WestJet
02 Oct - 06 Oct	WestJet
15 Oct - 31 Oct	Icelandair
14 Oct - 22 Oct	Icelandair
21 Oct - 04 Nov	Icelandair
02 Oct - 07 Oct	WestJet
06 Oct - 01 Nov	WestJet
07 Oct - 16 Oct	Icelandair
24 Oct - 31 Oct	Icelandair
07 Oct - 22 Oct	Icelandair
23 Oct - 15 Nov	Air Transat
19 Oct - 08 Nov	Air Transat
14 Oct - 08 Nov	TAP

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 $503

Return flights