Cheapest return flights from Montreal to London in September from 421€
AirHint found the following cheapest return flights from Montreal (YUL) to London (LGW)
in September 2025 (see full year ).
Return flights
08 Sep
- 15 Sep
Porter Airlines (Canada) Ltd
421 €
19 Sep
- 22 Sep
Air Transat
429 €
28 Sep
- 05 Oct
Air Transat
429 €
10 Sep
- 01 Oct
Porter Airlines (Canada) Ltd
433 €
17 Sep
- 24 Sep
Porter Airlines (Canada) Ltd
435 €
22 Sep
- 26 Sep
Air Transat
439 €
03 Sep
- 17 Sep
Porter Airlines (Canada) Ltd
439 €
08 Sep
- 13 Sep
Air Transat
442 €
direct
17 Sep
- 23 Sep
Air Transat
442 €
direct
22 Sep
- 26 Sep
Air Transat
442 €
direct
21 Sep
- 25 Sep
Air Transat
442 €
direct
08 Sep
- 22 Sep
Air Transat
442 €
direct
20 Sep
- 05 Oct
Air Transat
442 €
direct
29 Sep
- 05 Oct
Air Transat
442 €
direct
18 Sep
- 05 Oct
Air Transat
442 €
direct
19 Sep
- 05 Oct
Air Transat
447 €
24 Sep
- 01 Oct
Air Transat
447 €
30 Sep
- 07 Oct
Air Transat
447 €
27 Sep
- 03 Oct
Air Transat
447 €
15 Sep
- 08 Oct
Air Transat
453 €
Also check the deals for one-way flights from Montreal to London in September .
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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