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

Return flights

21 Apr - 28 Apr	Aer Lingus
14 Apr - 21 Apr	Aer Lingus
01 Apr - 08 Apr	Aer Lingus
23 Apr - 29 Apr	Aer Lingus
29 Apr - 20 May	Aer Lingus
16 Apr - 23 Apr	Aer Lingus
25 Apr - 08 May	Air Transat
20 Apr - 25 Apr	Aer Lingus
24 Apr - 02 May	Air Transat
05 Apr - 12 Apr	TAP
11 Apr - 16 Apr	TAP
09 Apr - 17 Apr	TAP

Also check the deals for one-way flights from Toronto to London in April.

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 April from 486€

Return flights