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

Return flights

21 May - 25 May	Ryanair
04 May - 08 May	Ryanair
11 May - 18 May	Ryanair
11 May - 20 May	Ryanair
04 May - 13 May	Ryanair
12 May - 02 Jun	Ryanair
05 May - 12 May	Ryanair
26 May - 31 May	Ryanair
12 May - 19 May	Ryanair
11 May - 19 May	Ryanair
06 May - 10 May	Ryanair
26 May - 25 Jun	Ryanair
25 May - 24 Jun	Ryanair
21 May - 01 Jun	Ryanair
21 May - 07 Jun	Ryanair
25 May - 07 Jun	Ryanair
24 May - 02 Jun	Ryanair
22 May - 02 Jun	Ryanair
22 May - 06 Jun	Ryanair
26 May - 14 Jun	Emirates

Also check the deals for one-way flights from London to Toronto 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 London to Toronto in May from 476€

Return flights