Cheapest return flights from Montreal to London in September from $493

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 September 2025 (see full year).

Return flights

10 Sep - 17 Sep FrenchBee
12 Sep - 26 Sep Air Transat direct
06 Sep - 14 Sep Air Transat direct
10 Sep - 25 Sep Air Transat direct
04 Sep - 11 Sep Air Transat direct
12 Sep - 19 Sep Air Transat direct
18 Sep - 25 Sep Air Transat direct
07 Sep - 14 Sep Air Transat direct
19 Sep - 26 Sep Air Transat direct
08 Sep - 22 Sep Air Transat direct
25 Sep - 02 Oct Air Transat direct
25 Sep - 10 Oct Air Transat direct
28 Sep - 05 Oct FrenchBee
15 Sep - 03 Oct Air Transat
24 Sep - 01 Oct Air Transat
26 Sep - 03 Oct Air Transat
29 Sep - 06 Oct Air Transat
10 Sep - 13 Oct Air Transat
30 Sep - 07 Oct Air Transat
26 Sep - 09 Oct Porter Airlines (Canada) Ltd

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

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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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