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

Return flights

25 Jun - 09 Jul	SWISS
24 Jun - 15 Jul	SWISS
24 Jun - 04 Jul	SWISS
17 Jun - 08 Jul	Ryanair
21 Jun - 19 Jul	Lufthansa
30 Jun - 14 Jul	Air Transat
25 Jun - 07 Jul	SWISS
20 Jun - 06 Jul	Lufthansa
24 Jun - 03 Jul	SWISS
23 Jun - 06 Jul	Austrian Airlines
26 Jun - 29 Jun	SWISS
24 Jun - 30 Jun	Lufthansa
20 Jun - 23 Jun	Air Transat	direct
20 Jun - 22 Jun	Air Transat	direct
21 Jun - 22 Jun	Air Transat
20 Jun - 24 Jun	Air Transat	direct
21 Jun - 30 Jun	Lufthansa
20 Jun - 29 Jun	Air Canada
27 Jun - 30 Jun	Air Canada
21 Jun - 23 Jun	Lufthansa

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

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 June from $426

Return flights