Cheapest return flights from Montreal to London in September from 435€

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

Return flights

10 Sep - 15 Sep Air Canada
15 Sep - 08 Oct Air Canada
28 Sep - 05 Oct Air Canada
10 Sep - 14 Sep Air Canada
10 Sep - 01 Oct Air Canada direct
22 Sep - 26 Sep Air Canada direct
12 Sep - 27 Sep Brussels Airlines
10 Sep - 11 Oct Air Canada direct
15 Sep - 08 Oct Air Canada direct
19 Sep - 28 Sep Air Canada direct
28 Sep - 05 Oct Air Canada direct
10 Sep - 29 Sep Air Canada
23 Sep - 08 Oct Air Canada
21 Sep - 28 Sep Air Canada
22 Sep - 29 Sep Air Canada
23 Sep - 30 Sep Air Canada
10 Sep - 30 Sep Air Canada
24 Sep - 14 Oct Air Canada
19 Sep - 04 Oct Air Canada direct
29 Sep - 05 Oct Air Canada direct

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

Skyscanner

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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