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

Return flights

18 May - 31 May	TAP
04 May - 19 May	TAP
17 May - 31 May	TAP
06 May - 11 May	TAP
25 May - 31 May	TAP
16 May - 24 May	TAP
12 May - 02 Jun	TAP
11 May - 17 May	TAP
06 May - 19 May	TAP
11 May - 20 May	TAP
06 May - 13 May	TAP
26 May - 11 Jun	TAP
30 May - 07 Jun	TAP
12 May - 09 Jun	TAP
07 May - 01 Jun	Icelandair
28 May - 08 Jun	Icelandair
27 May - 02 Jun	TAP
27 May - 01 Jun	TAP
26 May - 02 Jun	TAP
25 May - 01 Jun	TAP

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 436€

Return flights