AirHint found the following cheapest return flights from London (LCY) to Toronto (YYZ) in May 2026 (see full year).

Return flights

06 May - 20 May	Lufthansa
06 May - 10 May	Lufthansa
07 May - 12 May	SWISS
07 May - 14 May	SWISS
01 May - 11 May	SWISS
11 May - 18 May	SWISS
14 May - 18 May	SWISS
07 May - 11 May	SWISS
14 May - 17 May	SWISS
05 May - 20 May	Lufthansa
27 May - 03 Jun	ITA Airways
27 May - 07 Jun	ITA Airways
18 May - 03 Jun	ITA Airways
20 May - 10 Jun	Air Dolomiti
15 May - 02 Jun	Lufthansa
26 May - 03 Jun	Air Dolomiti
10 May - 17 Jun	Lufthansa
25 May - 04 Jun	SWISS
21 May - 01 Jun	ITA Airways
20 May - 03 Jun	Lufthansa

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

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 May from 488€

Return flights