Cheapest return flights from Ontario to London in October from 850€

AirHint found the following cheapest return flights from Ontario (ONT) to London (LGW) in October 2025 (see full year).

Return flights

28 Oct - 22 Nov Iberia
30 Oct - 22 Nov British Airways
25 Oct - 15 Nov British Airways
27 Oct - 08 Nov British Airways
29 Oct - 22 Nov British Airways
29 Oct - 05 Nov British Airways
26 Oct - 14 Nov British Airways
27 Oct - 14 Nov British Airways
26 Oct - 15 Nov British Airways
26 Oct - 21 Nov British Airways

Also check the deals for one-way flights from Ontario to London in October.

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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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