Cheapest return flights from Montreal to London in May from $487

Best time to book flights for Montreal (YUL) to London (LGW) flights at AirHint

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

Return flights

07 May - 09 May Air Transat
13 May - 21 May Air Transat
20 May - 11 Jun Air Transat direct
26 May - 04 Jun Air Transat direct
24 May - 01 Jun Air Transat direct
22 May - 28 May Air Transat direct
22 May - 27 May Air Transat direct
20 May - 30 May Air Transat direct
17 May - 27 May Air Transat direct
17 May - 28 May Air Transat direct
20 May - 27 May Air Transat direct
22 May - 07 Jun Air Transat direct
27 May - 10 Jun Air Transat direct
21 May - 28 May Air Transat
07 May - 27 May Air Transat
28 May - 04 Jun Air Transat
21 May - 24 Jun Air Transat
28 May - 03 Jun Air Transat
26 May - 09 Jun Air Transat
27 May - 03 Jun Air Transat direct

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

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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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