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

Return flights

03 May - 18 May	Icelandair
14 May - 17 May	Icelandair
02 May - 18 May	Icelandair
15 May - 19 May	Icelandair
14 May - 18 May	Icelandair
01 May - 05 May	Icelandair
03 May - 07 May	Icelandair
08 May - 10 May	Icelandair
02 May - 04 May	Icelandair
07 May - 10 May	Icelandair
26 May - 09 Jun	Air Transat
26 May - 07 Jun	Air Transat
15 May - 05 Jun	Icelandair
15 May - 09 Jun	Icelandair
11 May - 03 Jun	Icelandair
10 May - 03 Jun	Icelandair
26 May - 02 Jun	Air Transat
27 May - 14 Jun	Air Transat
18 May - 09 Jun	Air Transat
26 May - 08 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.

Book a cheap hotel in Toronto

Cheap car rent in Toronto

Cheapest return flights from London to Toronto in May from $437

Return flights