Montreal to London flights
Round trip · Economy · Prices per person in USD
Prices updated
Prices are low right now
$590 is $94 (14%) below the usual $684 for Montreal → London.
Buy now or wait? We're still learning this route. We have 1 day of prices so far and need about a week to say whether to book or wait.
Not ready to book? Get an email when Montreal → London drops below your price.Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| September 2026 | No fares found yet |
| October 2026 | $712 |
| November 2026 | $590 (cheapest month) |
| December 2026 | $735 |
| January 2027 | No fares found yet |
| February 2027 | No fares found yet |
| March 2027 | No fares found yet |
| April 2027 | No fares found yet |
| May 2027 | $656 |
Cheapest dates in the next 4 months
Round trip, per person-
Nov 16 – Dec 4 18 nights · leave Mon$590 −14% vs usual$590 −14% vs usual Book
Lufthansa 2 stops · 12h 00m -
Nov 23 – 29 6 nights · leave Mon$658$658 Book
Porter Airlines Canada 1 stop · 8h 45m -
Oct 28 – Nov 1 4 nights · leave Wed$712$712 Book
TAP Air Portugal 1 stop · 9h 45m -
Oct 11 – 17 6 nights · leave Sun$725 +6% vs usual$725 +6% vs usual Book
KLM 1 stop · 8h 45m -
Dec 28 – Jan 15, 2027 18 nights · leave Mon$735 +7% vs usual$735 +7% vs usual Book
TAP Air Portugal 2 stops · 10h 44m
-
Oct 8 – 15 7 nights · leave Thu$762 +11% vs usual$762 +11% vs usual Book
KLM 1 stop · 8h 00m
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
Fixed prices from LHR on KiwitaxiTo see transfer prices here, turn on partner content in .
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Plan the rest of your trip
London · Nov 16 – Dec 4Travel insurance · EKTA Airport transfer · Kiwitaxi
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Good to know
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Montreal to London: questions
How much is a flight from Montreal to London?
The cheapest round trip we have found right now is $590, leaving November 16 and returning December 4. The usual price on this route is about $684, so this fare is 14% 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 $590. The most expensive month in our data is December (from $735). Based on the 4 months ahead we have prices for.
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 $590, departing November 16 and returning December 4, about 14% below the usual $684. Right now we're following 6 upcoming date combinations on this route. The cheapest month to fly in our data is November, from $590. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.