Cheapest one-way flights from Ontario to London in April from $484

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 April 2025 (see full year).

One-Way flights

05 Apr Iberia
30 Apr jetBlue
24 Apr Iberia
10 Apr British Airways

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

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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