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

Return flights

04 May - 12 May	TAP
04 May - 13 May	TAP
02 May - 12 May	TAP
01 May - 05 May	Icelandair
14 May - 19 May	Icelandair
07 May - 15 May	Icelandair
02 May - 16 May	Icelandair
01 May - 08 May	Icelandair
02 May - 07 May	Icelandair
04 May - 16 May	Icelandair
27 May - 20 Jun	TAP
29 May - 20 Jun	Aer Lingus
26 May - 20 Jun	Aer Lingus
14 May - 09 Jun	Icelandair
16 May - 03 Jun	Icelandair
15 May - 05 Jun	Icelandair
13 May - 08 Jun	Icelandair
02 May - 02 Jun	Icelandair
11 May - 11 Jun	Icelandair
14 May - 06 Jun	Icelandair

Also check the deals for one-way flights from Toronto to London 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 Toronto to London in May from $501

Return flights