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

Return flights

07 May - 19 May	Icelandair
07 May - 31 May	Air Transat
10 May - 20 May	Air Transat
10 May - 18 May	Air Transat
05 May - 18 May	Air Transat
05 May - 13 May	Air Transat
27 May - 09 Jun	WestJet
12 May - 30 May	Air Transat
12 May - 20 May	WestJet
22 May - 02 Jun	Air Transat
12 May - 13 May	WestJet
19 May - 02 Jun	Air Transat
01 May - 31 May	WestJet
26 May - 02 Jun	Air Transat
19 May - 09 Jun	Air Transat
27 May - 07 Jun	WestJet
27 May - 03 Jun	WestJet
19 May - 16 Jun	WestJet
26 May - 16 Jun	Air Transat
21 May - 01 Jun	WestJet

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 388€

Return flights