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

Return flights

20 May - 27 May	TAP
02 May - 13 May	Icelandair
01 May - 09 May	Icelandair
01 May - 08 May	Icelandair
06 May - 13 May	Icelandair
05 May - 26 May	TAP
02 May - 08 May	Icelandair
02 May - 06 May	Icelandair
01 May - 04 May	Icelandair
01 May - 10 May	Icelandair
26 May - 09 Jun	ITA Airways
26 May - 16 Jun	ITA Airways
12 May - 02 Jun	ITA Airways
11 May - 01 Jun	ITA Airways
27 May - 10 Jun	ITA Airways
05 May - 15 Jun	ITA Airways
27 May - 01 Jun	ITA Airways
26 May - 05 Jun	ITA Airways
25 May - 06 Jun	Ryanair
28 May - 02 Jun	Scandinavian Airlines

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 389€

Return flights