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

Return flights

19 May - 26 May	TAP
19 May - 27 May	TAP
05 May - 12 May	Icelandair
13 May - 26 May	TAP
09 May - 26 May	TAP
11 May - 16 Jun	ITA Airways
02 May - 10 May	Icelandair
01 May - 09 May	Icelandair
05 May - 10 May	Icelandair
02 May - 06 May	Icelandair
01 May - 08 May	Icelandair
20 May - 03 Jun	TAP
25 May - 02 Jun	ITA Airways
25 May - 01 Jun	Ryanair
01 May - 01 Jun	Scandinavian Airlines
14 May - 01 Jun	Scandinavian Airlines
26 May - 04 Jun	Ryanair
27 May - 03 Jun	easyJet
15 May - 02 Jun	Icelandair
25 May - 03 Jun	Ryanair

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 $472

Return flights