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

Return flights

03 Oct - 06 Oct	Icelandair
30 Oct - 03 Nov	Icelandair
17 Oct - 21 Oct	Icelandair
01 Oct - 08 Oct	WestJet
31 Oct - 08 Nov	Icelandair
12 Oct - 14 Oct	Aer Lingus
06 Oct - 09 Oct	Icelandair
25 Oct - 31 Oct	Icelandair
25 Oct - 05 Nov	Icelandair
25 Oct - 01 Nov	Icelandair
19 Oct - 08 Nov	Icelandair
17 Oct - 03 Nov	WestJet
31 Oct - 06 Nov	Icelandair
13 Oct - 22 Oct	WestJet
08 Oct - 23 Oct	WestJet
17 Oct - 19 Oct	WestJet
01 Oct - 23 Oct	WestJet
15 Oct - 26 Nov	Aer Lingus
10 Oct - 01 Nov	Icelandair
30 Oct - 05 Nov	Icelandair

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 408€

Return flights