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

Return flights

15 May - 31 May	Air Transat
15 May - 24 May	Air Transat
14 May - 22 May	Air Transat
22 May - 30 May	Air Transat
14 May - 20 May	Air Transat
14 May - 23 May	Air Transat
15 May - 22 May	Air Transat
15 May - 20 May	Air Transat
07 May - 22 May	Air Transat
06 May - 20 May	Air Transat
21 May - 05 Jun	Air Transat
21 May - 03 Jun	Air Transat
13 May - 03 Jun	Air Transat
23 May - 03 Jun	Air Transat
13 May - 06 Jun	Air Transat
13 May - 08 Jun	Air Transat
09 May - 06 Jun	Air Transat
23 May - 06 Jun	Air Transat
23 May - 02 Jun	Air Transat
28 May - 09 Jun	Air Transat

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 $568

Return flights