YUL - LHR

$257 Find Cheap Flights from Montreal to London Heathrow Airport

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 10/7. 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

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to London, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Montreal to Heathrow (YUL-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Montreal to Heathrow 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

Mon, Nov 10 - Wed, Nov 19
Air Canada Logo
6:40 pm - 8:35 pmYUL-LHR
20h 55m1 stop
Air Canada Logo
9:00 am - 3:10 pmLHR-YUL
11h 10m1 stop
$563Air Canada
Find Deal
Tue, Nov 11 - Tue, Nov 18
Air Canada Logo
9:45 pm - 8:35 pmYUL-LHR
17h 50m1 stop
Air Canada Logo
9:00 am - 3:10 pmLHR-YUL
11h 10m1 stop
$564Air Canada
Find Deal
Mon, Oct 13 - Wed, Oct 22
Lufthansa Logo
9:55 pm - 9:35 amYUL-LHR
6h 40mnonstop
Lufthansa Logo
1:45 pm - 9:00 pmLHR-YUL
12h 15m1 stop
$568Lufthansa
Find Deal
Tue, Nov 25 - Mon, Dec 8
Lufthansa Logo
7:10 pm - 7:10 amYUL-LHR
7h 00mnonstop
Lufthansa Logo
7:40 am - 6:20 pmLHR-YUL
15h 40m1 stop
$569Lufthansa
Find Deal
Wed, Oct 15 - Mon, Oct 27
British Airways Logo
10:10 pm - 9:50 amYUL-LHR
6h 40mnonstop
British Airways Logo
4:10 pm - 7:45 pmLHR-YUL
7h 35mnonstop
$585British Airways
Find Deal
Mon, Sep 29 - Tue, Oct 7
British Airways Logo
10:10 pm - 9:50 amYUL-LHR
6h 40mnonstop
British Airways Logo
6:05 pm - 8:15 pmLHR-YUL
7h 10mnonstop
$587British Airways
Find Deal
Tue, Oct 7 - Wed, Oct 22
Delta Logo
5:00 pm - 8:00 amYUL-LHR
10h 00m1 stop
Delta Logo
6:30 am - 4:55 pmLHR-YUL
15h 25m1 stop
$603Delta
Find Deal
Tue, Oct 7 - Wed, Oct 22
Delta Logo
2:25 pm - 10:30 amYUL-LHR
15h 05m2 stops
Delta Logo
11:45 am - 4:55 pmLHR-YUL
10h 10m1 stop
$604Delta
Find Deal
Mon, Nov 10 - Fri, Nov 21
American Airlines Logo
8:40 pm - 8:30 amYUL-LHR
6h 50mnonstop
American Airlines Logo
4:10 pm - 6:45 pmLHR-YUL
7h 35mnonstop
$606American Airlines
Find Deal
Thu, Oct 23 - Thu, Oct 30
American Airlines Logo
10:05 pm - 9:45 amYUL-LHR
6h 40mnonstop
American Airlines Logo
4:10 pm - 7:45 pmLHR-YUL
7h 35mnonstop
$628American Airlines
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
Air Canada's Premium Economy offers extra legroom.
The Elizabeth Line is a cost-effective Heathrow commute.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Air Canada
Cheapest • from $563 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 10% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 11% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$563
Overall average: $684
Air Canada
Mon 11/10Wed 11/19
YUL - LHR • 1 stop
Cheapest non-stop
$582
Typical prices: $658-787
Air Canada
Wed 11/19Mon 11/24
YUL - LHR • Non-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to London!
Expert advice

Expert advice for your flight from Montreal to London

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Air Canada

Signature Class offers lie-flat seats with direct aisle access, ideal for long-haul comfort.


Premium Economy provides extra legroom and priority boarding, enhancing comfort on long flights.

Read more about Air Canadaby Stefanie Waldek
British Airways

Premium Economy offers more space and peace, with wider seats and deeper recline.


BA's professional cabin crew enhance the flight experience with attentive service.

Lufthansa

Premium Economy offers 50% more space and an extra checked bag, enhancing comfort.


Lufthansa's special meals cater to dietary needs, available on long-haul flights.

Read more about Lufthansaby Jessica Macdonald
American Airlines

Main Cabin Extra offers early boarding and complimentary drinks, ideal for longer flights.


Flagship Lounges provide premium services including upgraded seating and meals for qualifying passengers.

Airports
YUL

Security lines at YUL move quickly. Arrive 90 minutes early; expect 20-30 minutes for screening.

Read more about YULby Brandon Schultz
LHR

The Elizabeth Line offers a cost-effective commute from Heathrow to central London, taking about twice as long as the Express.

Read more about LHRby Duncan Madden
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Air Canada

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Duncan Madden

Duncan Madden

Expert on British Airways and LHR

Duncan Madden

Duncan Madden

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Jessica Macdonald

Jessica Macdonald

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Read more
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Brandon Schultz

Brandon Schultz

Expert on YUL

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
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’s the cheapest day of the week to fly from Montreal to London Heathrow Airport?

The average price of all round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to London Heathrow Airport on a Sunday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Montreal to London Heathrow Airport. For your return ticket, we recommend flying on a Tuesday and avoiding Thursdays for the best deals.

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

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 Heathrow Airport, 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 Heathrow Airport is October, where tickets cost $660 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $913 and $841 respectively.

Can I save money by flying with a layover from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $733 on average.

How far in advance should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?

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

To get a below average price on the flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport, you should book around 2 weeks before departure, which saves you about 10% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$257
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Montreal to London Heathrow Airport

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 Heathrow Airport flights

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

    In the last 3 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport was $257 for a one-way ticket and $563 for a round-trip.

  • Do I need a passport to fly between Montreal and London Heathrow Airport?

    Yes, you’ll need a passport to travel to London Heathrow Airport from Montreal.

  • Which airlines offer Wi-Fi service onboard planes from Montreal to London Heathrow Airport?

    Air Canada, Lufthansa, and SWISS offer inflight Wi-Fi service on the Montreal to London Heathrow Airport flight route.

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

    The Boeing 787-8 Dreamliner is the aircraft model that flies most regularly on the Montreal to London Heathrow Airport flight route.

  • Which airline alliances offer flights from Montreal to London Heathrow Airport?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Montreal and London Heathrow Airport, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Montreal to London Heathrow Airport?

    There are nonstop flights from Montreal to London Heathrow Airport on a daily basis.

  • Which is the best airline for flights from Montreal to London, American Airlines or Air Canada?

    The two airlines most popular with KAYAK users for flights from Montreal to London are American Airlines and Air Canada. With an average price for the route of $845 and an overall rating of 7.2, American Airlines is the most popular choice. Air Canada is also a great choice for the route, with an average price of $730 and an overall rating of 7.1.

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

    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 Heathrow Airport.

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

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

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

    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 Heathrow Airport with an airline and back to Montreal with another airline. Booking your flights between Montreal and LHR can sometimes prove cheaper using this method.

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

    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 Heathrow Airport from Montreal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $781 or less one-way and $609 or less round-trip.

Prefer to fly direct from Montreal to London Heathrow Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Montreal Pierre Elliott Trudeau Intl to London Heathrow.
Find which airlines fly direct from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

Montreal Pierre Elliott Trudeau Intl to London Heathrow

Monday

Air Canada, British Airways

Air Canada, British Airways

Tuesday

Air Canada, British Airways

Air Canada, British Airways

Wednesday

Air Canada, British Airways

Air Canada, British Airways

Thursday

Air Canada, British Airways

Air Canada, British Airways

Friday

Air Canada, British Airways

Air Canada, British Airways

Saturday

Air Canada, British Airways

Air Canada, British Airways

Sunday

Air Canada, British Airways

Air Canada, British Airways

See more direct flights

Direct returns

London Heathrow to Montreal Pierre Elliott Trudeau Intl

Monday

Air Canada, British Airways

Air Canada, British Airways

Tuesday

Air Canada, British Airways

Air Canada, British Airways

Wednesday

Air Canada, British Airways

Air Canada, British Airways

Thursday

Air Canada, British Airways

Air Canada, British Airways

Friday

Air Canada, British Airways

Air Canada, British Airways

Saturday

Air Canada, British Airways

Air Canada, British Airways

Sunday

Air Canada, British Airways

Air Canada, British Airways

See more direct flights

Reviews of the top 4 airlines serving 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.
7.2
American AirlinesOverall score based on 10000 reviews
7.2Comfort
7.5Boarding
6.4Food
8.0Crew
6.9Entertainment
Airline reviews

The flight was on time and crew were nice, seats were tight and there was entertainment available

8.0 ExcellentJohn, Sep 2025YUL - ORD
Read more American Airlines reviews

The flight was on time and crew were nice, seats were tight and there was entertainment available

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

The flight was canceled 3 hours after original take off time

Pathetic check in experience at JFK. Everything is self check in. Not enough staff present to help with when the check in process or the kiosk gets stuck. Staff present not welcoming or pleasant at all. On the other hand the NY based flight crew was great. Courteous and friendly throughout the flight. Special meals leave a lot to be desired. Kids meals should be made available when kids are flying and same goes for special kids meals too.

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

More choices on menu. Seemed only thing offered was Scottish, and while that’s good for the Scot’s it doesn’t help the Americans who don’t like that food. And I really hate it when, during sleep time the attendants have a very loud conversation right over you. Lastly, I paid 5000 dollars for business class, and having to pay more to choose my seat early is really an insult. Seems greedy

The chicken adobo was a little too spicy but good otherwise. My personal opinion. Movie selection could be improved, too many horror movies. Could add a few more chick flicks! The flight was bumpy at times. We arrived a little early too! Flight attendants friendly.

Again flight was awesome except British Airways lost both gate checked luggage’s. Still missing

really bad they refused to check in luggages that I had purchased, even showing them the transaction receipt from british airways app the staff in miami was MEDIOCRE

Crew was great and responsive. Entertainment quit working with about 4 hours remaining on the flight. My seat cushion was broken.

1 hour late No hot drinks No restroom in the back of the plane

I did the posting for 45 years. I just retired. I’m the only seat in the plane but didn’t have any phone. It has to be mine so imagine seeing 13 hours on the flat seat with a belt that didn’t close all the rest was OK.

I had wonderful wheelchair assistance through the Montreal airport onto the flight. Air Canada was excellent in this both at the Fredericton airport and the Montreal one where an attendant helped us through customs as well as transport and baggage security.

Flight was cancelled last minute due to Air Canada strike leaving us stranded and having to stressfully find a way home that cost hundreds of dollars in excess cost added to the trip. Having just experienced our mother's funeral service, this was not a good way to end our trip.

They went on strike before time and screwed us big time. Which is not fair. We respect their planned strike but why they went on strike ahead of time ??? Poor garbage management

Premium Economy is best if you can't get upgraded to Business.. Not as good to sleep for red-eye flights, but does the job. More space for your legs and arms.. The food is also better and the service is almost like business.

Awful. As we were boarding we were told the flight was cancelled. Then had to stand in a queue for 3 hours to talk to someone at the kiosk of Air Canada. They were not helpful at all. No empathy. My issue is not with them striking but the total disregard for the chaos and distress late notice caused. No thought on the impact this has caused.

Horrible, experience, 5 hours delay, they changed gates 3 times, the last one we had to wait for 1::30 hre for the door to open to get to that gate. 0 apologies from Air Canada, they don’t care at all about their passengers

I had a very disappointing experience with customer service. I was suffering from a severe viral infection that included a rash and persistent cough, leaving me unable to even sit upright. Given the circumstances, I requested travel credits from Canada Air, explaining the potential health risk to others onboard. However, the airline showed no concern for my condition and stated they were not in a position to make decisions based on health considerations. Despite my illness, I received no support or flexibility. Ultimately, I chose to forgo my flight due to their lack of responsiveness. It’s unfortunate that airlines like this operate without prioritizing passenger health and safety.

On-time boarding, departure, and flight. Electronic notifications about bags for the whole of their own journey too - from when they got accepted into the system through to being loaded onto the plane and then finally being disgorged onto the right carousel. That was an excellent feature.

All was good, except my USB charging did not work, so my phone got drained and I could not charge it. Same happened to my neighbour.

A bit more space? Not practical, I know. I felt squished in but part of that could have been the man sitting next to me.

The plane (Mitsubishi CRJ) felt old, creaking and not very new. The crew was okay. Hot water provision was broken so hot beverages could't be served.

Not bad. We had preboarding tickets but the preboarding was badly managed. We lined up behind all the parents with little kids etc and when we got to the front of the line the attendant deliberately turned away from us and ignored us until I asked to be allowed to go to the gate. She started telling us that we had to wait until I told her we had preboarding then she let us through.

The United Airlines crew that operated this flight was subpar. They didn’t

Everything well done and customer oriented There entertainment system is difficult to navigate

They delayed my flight from Toronto Pearson for one hour and Frankfurt to Abuja for 2HRS, So sad

The aircraft was old, there was no charging sockets, and the seats were narrow and uncomfortable even though I had exit row premium seats.

The service was really good. The breakfast food could’ve been better as I don’t eat sweets for breakfast and the only choice was a muffin. Overall, good experience though. Thank you.

It was my first experience in business class. It was everything I expected and more. Service was impeccable, food was delicious and I felt rested once I arrived to London

The flight was good. It arrived at Heathrow on time but then there was no transport to take us to the terminal. We sat on the plane for an hour waiting for a bus. I will avoid Heathrow if possible in future. The crew were very apologetic.

we had to walk up stairs to get into the plane--no jetways. Perhaps that's a problem not with the airline but with facilities at Heathrow, Glasgow, and Edinburgh. But it was inconvenient.

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

flight was delayed from BWI to London - missed my connecting flight & then connecting flight (also British Air) was delayed - food is awful, TV & movie selection is great

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Excellent service by the flight crew, and the food was relatively very good compared to other airlines.

Flight was excellent, staff was great. My first time in first class and it was very relaxing and comfortable.

They can separate the young children from people who want to have a rest. It had lots of crying and loud noises from the children.

I had an awful experience with British Airways as they broke the handle of my checked in suitcase and when I went to complain they told me that this was not their responsibility. This has to be one horrible airline that does not take responsibility for the damage that they have created

Didn’t fly with them as someone had cancelled my flight

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

Information on your arrival and departure airports

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