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

Return flights

30 Aug - 16 Sep	KLM
26 Aug - 09 Sep	KLM
26 Aug - 16 Sep	KLM
25 Aug - 25 Sep	KLM
25 Aug - 30 Sep	KLM
20 Aug - 30 Sep	Virgin Atlantic
27 Aug - 08 Sep	KLM
26 Aug - 04 Sep	SWISS
30 Aug - 02 Sep	KLM
19 Aug - 18 Sep	KLM
22 Aug - 27 Aug	KLM
21 Aug - 24 Aug	Lufthansa
22 Aug - 24 Aug	KLM
20 Aug - 25 Aug	Virgin Atlantic
20 Aug - 27 Aug	KLM
19 Aug - 24 Aug	Virgin Atlantic
22 Aug - 25 Aug	ITA Airways
16 Aug - 25 Aug	SWISS
23 Aug - 26 Aug	KLM
19 Aug - 25 Aug	SWISS

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 529€

Return flights