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

Return flights

28 Aug - 12 Sep	Air Canada
28 Aug - 16 Sep	Air Canada
28 Aug - 10 Sep	Air Canada
26 Aug - 03 Sep	Air Canada
28 Aug - 11 Sep	Air Canada
26 Aug - 09 Sep	Air Canada
28 Aug - 17 Sep	Air Canada
28 Aug - 04 Sep	Air Canada
28 Aug - 05 Sep	Air Canada
26 Aug - 07 Sep	Air Canada
28 Aug - 31 Aug	Air Canada
27 Aug - 31 Aug	Air Canada
30 Aug - 31 Aug	Air Canada
29 Aug - 31 Aug	Lufthansa
26 Aug - 30 Aug	Air France
08 Aug - 13 Aug	Air Canada
17 Aug - 24 Aug	British Airways
07 Aug - 14 Aug	Air Canada
08 Aug - 15 Aug	Air Canada
17 Aug - 25 Aug	British Airways

Also check the deals for one-way flights from London to Toronto in August.

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 London to Toronto in August from $482

Return flights