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

Return flights

10 May - 22 May	Icelandair
02 May - 17 May	Icelandair
12 May - 22 May	Icelandair
12 May - 19 May	Icelandair
15 May - 19 May	Icelandair
01 May - 11 May	Icelandair
01 May - 12 May	Icelandair
01 May - 13 May	Icelandair
14 May - 22 May	Icelandair
12 May - 20 May	Icelandair
18 May - 01 Jun	Ryanair
19 May - 01 Jun	TAP
02 May - 20 Jun	Icelandair
04 May - 01 Jun	TAP
30 May - 23 Jun	Air Transat
15 May - 04 Jun	Icelandair
15 May - 03 Jun	Icelandair
24 May - 06 Jun	Air Transat
18 May - 02 Jun	Air Transat
28 May - 02 Jun	Air Transat

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 358€

Return flights