Cheapest return flights from Montreal to London in September from $618

AirHint found the following cheapest return flights from Montreal (YUL) to London (STN) in September 2026 (see full year).

Return flights

01 Sep - 15 Sep WestJet
02 Sep - 10 Sep WestJet
05 Sep - 15 Sep WestJet
24 Sep - 04 Oct WestJet
22 Sep - 13 Oct Air Transat
08 Sep - 22 Sep Air Transat
02 Sep - 20 Sep WestJet
05 Sep - 18 Sep Air Transat
02 Sep - 15 Sep Turkish Airlines

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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