AirHint found the following cheapest return flights from Montreal (YUL) to London (LHR) in June 2025 (see full year).

Return flights

18 Jun - 25 Jun	Air Canada
18 Jun - 24 Jun	Air Canada
18 Jun - 23 Jun	Air Canada
18 Jun - 26 Jun	Air Canada
17 Jun - 23 Jun	Air Canada
17 Jun - 22 Jun	Air Canada
16 Jun - 23 Jun	Air Canada
29 Jun - 06 Jul	Virgin Atlantic
20 Jun - 26 Jun	Air Canada
19 Jun - 23 Jun	Lufthansa
19 Jun - 26 Jun	Lufthansa
25 Jun - 02 Jul	TAP
24 Jun - 03 Jul	Air Canada
30 Jun - 07 Jul	KLM
28 Jun - 01 Jul	American Airlines
30 Jun - 08 Jul	Air France
30 Jun - 11 Jul	KLM
26 Jun - 03 Jul	KLM
21 Jun - 04 Jul	Air Canada
23 Jun - 02 Jul	TAP

Also check the deals for one-way flights from Montreal to London in June.

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 June from $672

Return flights