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

Return flights

13 May - 27 May	TAP
19 May - 26 May	TAP
04 May - 27 May	TAP
04 May - 10 May	TAP
26 May - 11 Jun	TAP
04 May - 13 May	TAP
18 May - 01 Jun	TAP
13 May - 08 Jun	TAP
20 May - 03 Jun	TAP
27 May - 08 Jun	TAP
27 May - 04 Jun	TAP
27 May - 07 Jun	TAP
26 May - 07 Jun	TAP
25 May - 07 Jun	TAP
07 May - 28 May	Air Transat
22 May - 27 May	Icelandair
13 May - 21 May	Icelandair
11 May - 29 May	Icelandair
07 May - 22 May	Icelandair
30 May - 05 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 $509

Return flights