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

Return flights

13 May - 26 May	ITA Airways
05 May - 26 May	ITA Airways
11 May - 26 May	ITA Airways
13 May - 18 May	ITA Airways
12 May - 19 May	ITA Airways
05 May - 12 May	SWISS
05 May - 10 May	SWISS
04 May - 10 May	Lufthansa
04 May - 12 May	Lufthansa
04 May - 14 May	Lufthansa
28 May - 09 Jun	ITA Airways
28 May - 08 Jun	ITA Airways
28 May - 04 Jun	ITA Airways
07 May - 02 Jun	SWISS
31 May - 07 Jun	ITA Airways
12 May - 09 Jun	ITA Airways
07 May - 04 Jun	SWISS
26 May - 02 Jun	British Airways
20 May - 07 Jun	British Airways
20 May - 04 Jun	British Airways

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 493€

Return flights