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

Return flights

10 Oct - 12 Oct	WestJet
08 Oct - 21 Oct	WestJet
13 Oct - 20 Oct	WestJet
06 Oct - 21 Oct	WestJet
10 Oct - 20 Oct	WestJet
02 Oct - 06 Oct	Air Transat
07 Oct - 21 Oct	WestJet
17 Oct - 21 Oct	WestJet
10 Oct - 15 Oct	Air Transat
12 Oct - 15 Oct	Air Transat
22 Oct - 05 Nov	Aer Lingus
15 Oct - 05 Nov	Aer Lingus
29 Oct - 24 Nov	Aer Lingus
14 Oct - 11 Nov	Aer Lingus
21 Oct - 04 Nov	Aer Lingus
28 Oct - 18 Nov	Aer Lingus
14 Oct - 04 Nov	Aer Lingus
29 Oct - 19 Nov	Aer Lingus
14 Oct - 09 Nov	Aer Lingus
21 Oct - 17 Nov	WestJet

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 255€

Return flights