Montreal to London flights
The cheapest round trip we found from Montreal to London is $582 (Nov 24 – Dec 2, 2 stops), 17% below the usual $698.
YMQ to LON · Round trip · Economy · Prices per person in USD · Price found (2 days ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $582 (cheapest month) |
| December 2026 | $810 |
| January 2027 | No fares found yet |
| February 2027 | $664 |
| March 2027 | No fares found yet |
| April 2027 | $722 |
| May 2027 | No fares found yet |
| June 2027 | $675 |
| July 2027 | No fares found yet |
| August 2027 | $842 |
Cheapest dates in the next 4 months
Round trip, per person-
Nov 24 – Dec 2 8 nights · leave Tue$582 −17% vs usual$582 −17% vs usual Book
Air Canada 2 stops · 9h 40m -
Nov 24 – Dec 1 7 nights · leave Tue$608 −13% vs usual$608 −13% vs usual Book
Air Canada 1 stop · 9h 40m
-
Nov 25 – Dec 3 8 nights · leave Wed$608 −13% vs usual$608 −13% vs usual Book
Air Canada 1 stop · 9h 40m
-
Nov 25 – Dec 2 7 nights · leave Wed$612 −12% vs usual$612 −12% vs usual Book
Air Canada 1 stop · 9h 40m
-
Nov 28 – Dec 4 6 nights · leave Sat$627 −10% vs usual$627 −10% vs usual Book
Porter Airlines Canada 1 stop · 8h 41m -
Nov 23 – Dec 1 8 nights · leave Mon$631 −10% vs usual$631 −10% vs usual Book
Air Transat 2 stops · 9h 20m -
Nov 23 – 30 7 nights · leave Mon$635 −9% vs usual$635 −9% vs usual Book
Air Transat 1 stop · 9h 20m
-
Nov 26 – Dec 3 7 nights · leave Thu$643 −8% vs usual$643 −8% vs usual Book
Porter Airlines Canada 1 stop · 8h 42m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
Things to do in London
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Airport transfer to London
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Plan the rest of your trip
London · Nov 24 – Dec 2- eSIM for United Kingdom Yesim · prepaid mobile data (opens Yesim in a new tab)
- Car rental in United Kingdom Economybookings · compare rental companies (opens Economybookings in a new tab)
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Good to know
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Flights to London from other cities
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Montreal to London: questions
How much does a flight from Montreal to London cost?
The cheapest round trip we have found right now is $582, leaving November 24 and returning December 2. The usual price on this route is about $698, so this fare is 17% less. Prices are per person, economy, in USD.
What is the cheapest month to fly from Montreal to London?
November 2026, with round trips from $582. The most expensive month in our data is August (from $842). Based on the 6 months ahead we have prices for.
Which airports do Montreal to London flights use?
Montreal airports include Mirabel International (YMX), Montreal-Pierre Elliott Trudeau International (YUL) and St. Hubert (YHU). London airports include London Heathrow (LHR), London City (LCY) and London Gatwick (LGW). The prices on this page cover every airport in both cities (YMQ and LON are the city codes).
About this route
We track round-trip economy fares from Montreal (Canada) to London (United Kingdom) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $582, departing November 24 and returning December 2, about 17% below the usual $698. Right now we're following 11 upcoming date combinations on this route. The cheapest month to fly in our data is November, from $582. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.