AirHint found the following cheapest return flights from Toronto (YYZ) to London (LHR) in October 2026 (see full year).

Return flights

06 Oct - 20 Oct	British Airways
06 Oct - 13 Oct	Finnair	direct
14 Oct - 11 Nov	Finnair	direct
21 Oct - 18 Nov	Finnair	direct
12 Oct - 19 Oct	British Airways	direct
05 Oct - 27 Oct	British Airways	direct
07 Oct - 03 Nov	British Airways	direct
16 Oct - 25 Oct	TAP
13 Oct - 30 Oct	TAP
12 Oct - 27 Oct	TAP
14 Oct - 22 Oct	TAP
22 Oct - 05 Nov	TAP
09 Oct - 18 Oct	British Airways
08 Oct - 18 Oct	British Airways
10 Oct - 10 Nov	Icelandair
22 Oct - 05 Nov	Finnair	direct
10 Oct - 10 Nov	Aer Lingus	direct

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 $635

Return flights