Cheapest one-way flights from Ontario to London in October from $485

Best time to book flights for Ontario (ONT) to London (LGW) flights at AirHint

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

One-Way flights

03 Oct Iberia
02 Oct Iberia

Also check the deals for return flights from Ontario to London in October.

Skyscanner

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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