YUL - YXU

C$ 325 Find Cheap Flights from Montreal to London – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Montreal to London departing on 21/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

Save 20% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
C$ 696
WestJet
Thu 30/7Sun 2/8
YUL - YXU • 1 stop
Cheapest one-way flights
C$ 325
WestJet
Fri 21/8
YUL - YXU • 1 stop
Top airlines
Cheapest • from C$ 696 (round-trip)
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Montreal and London. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg C$ 458 (round-trip)
Shortest trip • 4h 19m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to London!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Montreal to London (YUL-YXU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Montreal to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Montreal to London

Thu, 30 Jul - Sun, 2 Aug
WestJet Logo
8:00 p.m. - 5:20 a.m.
YUL
-
YXU
9h 20m
1 stop
WestJet Logo
2:40 p.m. - 4:45 p.m.
YXU
-
YUL
26h 05m
2 stops
C$ 696WestJet
Fri, 21 Aug - Fri, 28 Aug
WestJet Logo
8:00 p.m. - 5:20 a.m.
YUL
-
YXU
9h 20m
1 stop
WestJet Logo
8:40 p.m. - 7:05 a.m.
YXU
-
YUL
10h 25m
1 stop
C$ 703WestJet
Fri, 21 Aug - Fri, 28 Aug
Multiple Airlines Logo
8:00 p.m. - 5:20 a.m.
YUL
-
YXU
9h 20m
1 stop
Multiple Airlines Logo
2:40 p.m. - 12:25 a.m.
YXU
-
YUL
9h 45m
2 stops
C$ 720Multiple Airlines
Thu, 27 Aug - Mon, 7 Sep
WestJet Logo
8:00 p.m. - 5:20 a.m.
YUL
-
YXU
9h 20m
1 stop
WestJet Logo
6:10 a.m. - 4:30 p.m.
YXU
-
YUL
10h 20m
1 stop
C$ 753WestJet
Thu, 27 Aug - Mon, 31 Aug
WestJet Logo
8:00 p.m. - 5:20 a.m.
YUL
-
YXU
9h 20m
1 stop
WestJet Logo
5:55 p.m. - 11:45 p.m.
YXU
-
YUL
29h 50m
1 stop
C$ 769WestJet
Thu, 27 Aug - Mon, 31 Aug
WestJet Logo
5:45 p.m. - 1:50 p.m.
YUL
-
YXU
20h 05m
2 stops
WestJet Logo
5:55 p.m. - 11:45 p.m.
YXU
-
YUL
29h 50m
1 stop
C$ 781WestJet
Thu, 27 Aug - Sun, 6 Sep
WestJet Logo
8:00 p.m. - 5:20 a.m.
YUL
-
YXU
9h 20m
1 stop
WestJet Logo
2:40 p.m. - 12:25 a.m.
YXU
-
YUL
9h 45m
2 stops
C$ 794WestJet
Thu, 27 Aug - Sun, 6 Sep
WestJet Logo
8:00 p.m. - 5:20 a.m.
YUL
-
YXU
9h 20m
1 stop
WestJet Logo
6:10 a.m. - 11:45 p.m.
YXU
-
YUL
17h 35m
1 stop
C$ 796WestJet
Fri, 18 Sep - Sun, 20 Sep
Air Canada Logo
4:40 p.m. - 9:40 p.m.
YUL
-
YXU
5h 00m
1 stop
Air Canada Logo
10:05 a.m. - 3:23 p.m.
YXU
-
YUL
5h 18m
2 stops
C$ 803Air Canada
Thu, 30 Jul - Sun, 2 Aug
WestJet Logo
6:45 a.m. - 1:50 p.m.
YUL
-
YXU
31h 05m
2 stops
WestJet Logo
2:40 p.m. - 4:45 p.m.
YXU
-
YUL
26h 05m
2 stops
C$ 811WestJet
Booking Insights

KAYAK's insights & trends for Montreal to London flights

Get data-powered insights and trends into flights from Montreal to London to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport to London?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to London, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Montreal Pierre Elliott Trudeau Intl Airport to London is March, where tickets cost C$ 0 (return) on average. On the other hand, the most expensive months are August and December, where the average cost of round-trip tickets is C$ 1,378 and C$ 1,276 respectively.

Good to know

Low seasonSeptember
Cheapest flightC$ 325
Best time to beat the crowds (28% less expensive on average)
Most popular time to fly (44% more expensive on average)
Flight from Montreal to London

When to book flights from Montreal to London

Are your dates flexible? Find out the best times to travel from Montreal to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Montreal to London flights

  • What is the cheapest flight from Montreal Pierre Elliott Trudeau Intl Airport to London?

    In the last 5 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to London was C$ 325 for a one-way ticket and C$ 696 for a round-trip.

  • Which airports will I be using when flying from Montreal to London?

    When flying out of Montreal you will be using Montreal Pierre Elliott Trudeau Intl. You will be landing at London, also known as London.

  • Which aircraft models fly most regularly from Montreal to London?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Montreal to London?

    Star Alliance is the only airline alliance operating flights between Montreal and London.

  • How does KAYAK find such low prices on flights from Montreal to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Montreal to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Montreal to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Montreal is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Montreal to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Montreal with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Montreal to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Montreal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Montreal to London

 
See real verified KAYAK customer reviews for airlines flying from Montreal to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Montreal to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
Air CanadaOverall score based on 11321 reviews
6.8Entertainment
7.1Comfort
6.3Food
7.8Crew
7.3Boarding
Airline reviews

Cancelled flight, had to rearrange plans independently and no vouchers offered

8.0 ExcellentAnonymous, Jul 2026
YUL - YYZ
Read more Air Canada reviews

Cancelled flight, had to rearrange plans independently and no vouchers offered

This was my second leg of my trip and was delayed so was worried about my connection in Montreal. Still hungry so on boarding I asked a flight attendant if I could use my $14.00 voucher on the plane for food as I was starving. She said she would check and let me know but she never came back. So no food again as none was offered. Had to get my bags and check them again and that was ok but don’t understand why I had to go through security and because of them almost missed my flight. No food offered nor possibility to purchase food so still hungry and just watched a movie and hoped I could get food when I landed. Was able to use the $14.00 voucher to buy something and had my family bring food as I was now starving. I’ve been travelling on AC for years and this was my worst experience ever. After our flight got cancelled in SXM and was told the staff there didn’t work for AC so couldn’t do much to help us was not a good experience

When I came in the front door in Montreal airport I didn't know where to go, first time traveling. Signs were not directing me.

I had a great experience at YUL Air Canada. The service was top drawer as I needed help to board.

Disappointed my flight was delayed to TO as i had a connection to make. Ran through the airport I made my flight but I initially had 1.5 hours to connect. Unnecessary stress!

The speaker flight attendant talked over was way too loud. Hurt my ears -had to take out hearing aids.

The flight attendants were lovely - very warm and kind. Really appreciated it.

The Q400 plane is getting old and very noisy. They should allow the quieter jets fly onto the island.

Went on an earlier, standby flight, but was delayed so we only save 30 minutes getting to Toronto. AND we were in business class on our original flight but had to go in economy on the earlier flight because pilots and crew “had to” go business. What?!?! The paying passenger (I am Super Elite) has to go economy so they can dead-head employees? That’s messed up. As in my other posts, I only take AIr Canada because there is little other choice for the destinations I need to get to. But I am not proud to show my Super Elite tag on my luggage.

Do not book a flight thru Toronto Pearson to the US with less than 2 hrs between connecting flights. With 90 minutes (which I had) if your first plane is 25-30 minutes late by the time you debark, walk to go through security again, go through US customs and find your new gate with at least 15 minutes before your departure. If you stop to go the the bathroom you will be lucky to catch your flight, in my case I wasn’t lucky. The airline should not offer flights that do not allow you time to get to your second plane, bad customer service!

Everything you need to know for your flight from Montreal to London

Information on your arrival and departure airports