AirHint found the following cheapest return flights from Montreal (YUL) to London (LHR) in April 2026 (see full year).

Return flights

13 Apr - 20 Apr	TAP
15 Apr - 22 Apr	TAP
27 Apr - 04 May	TAP
15 Apr - 26 Apr	TAP
12 Apr - 19 Apr	TAP
13 Apr - 13 May	TAP
27 Apr - 11 May	TAP
22 Apr - 26 Apr	Air Canada
20 Apr - 27 Apr	TAP
15 Apr - 27 Apr	TAP
01 Apr - 08 Apr	Air Canada
07 Apr - 14 Apr	Air Canada
08 Apr - 15 Apr	Air Canada
24 Apr - 08 May	TAP
23 Apr - 04 May	Air Transat
29 Apr - 06 May	TAP
30 Apr - 07 May	Air Transat
27 Apr - 01 May	Air Canada
26 Apr - 03 May	Air France
28 Apr - 05 May	Air France

Also check the deals for one-way flights from Montreal 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 Montreal to London in April from 449€

Return flights