Cheapest one-way flights from Ontario to London in April from 474€

AirHint found the following cheapest one-way flights from Ontario (ONT) to London (LGW) in April 2026 (see full year).

One-Way flights

20 Apr British Airways
25 Apr British Airways
06 Apr British Airways
21 Apr British Airways
22 Apr British Airways
23 Apr British Airways
13 Apr British Airways
14 Apr British Airways
08 Apr British Airways
07 Apr British Airways

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

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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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