YUL - LHR

£224 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 Heathrow departing on 1/4. 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

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
Travellers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Expert advice
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 return 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 return flight deals from Montreal to Heathrow

Fri, 16 Jan - Tue, 20 Jan
TAP AIR PORTUGAL Logo
21:45 - 21:35YUL-LHR
18h 50m1 stop
TAP AIR PORTUGAL Logo
18:30 - 20:15LHR-YUL
30h 45m1 stop
£418TAP AIR PORTUGAL
Find Deal
Mon, 24 Nov - Mon, 1 Dec
SWISS Logo
16:45 - 13:00YUL-LHR
15h 15m1 stop
SWISS Logo
09:00 - 15:10LHR-YUL
11h 10m1 stop
£420SWISS
Find Deal
Thu, 13 Nov - Wed, 19 Nov
Air Canada Logo
13:15 - 20:35YUL-LHR
26h 20m1 stop
Air Canada Logo
09:00 - 15:10LHR-YUL
11h 10m1 stop
£424Air Canada
Find Deal
Thu, 13 Nov - Wed, 19 Nov
Air Canada Logo
13:15 - 20:35YUL-LHR
26h 20m1 stop
Air Canada Logo
09:00 - 15:10LHR-YUL
11h 10m1 stop
£433Air Canada
Find Deal
Fri, 21 Nov - Fri, 28 Nov
Multiple Airlines Logo
21:45 - 20:35YUL-LHR
17h 50m1 stop
Multiple Airlines Logo
09:00 - 15:10LHR-YUL
11h 10m1 stop
£434Multiple Airlines
Find Deal
Wed, 12 Nov - Thu, 20 Nov
Multiple Airlines Logo
21:40 - 14:25YUL-LHR
11h 45m1 stop
Multiple Airlines Logo
15:15 - 19:40LHR-YUL
33h 25m1 stop
£436Multiple Airlines
Find Deal
Thu, 13 Nov - Wed, 19 Nov
Lufthansa Logo
19:10 - 07:10YUL-LHR
7h 00mdirect
Lufthansa Logo
11:10 - 18:20LHR-YUL
12h 10m1 stop
£446Lufthansa
Find Deal
Thu, 27 Nov - Sun, 7 Dec
Lufthansa Logo
19:10 - 07:10YUL-LHR
7h 00mdirect
Lufthansa Logo
08:45 - 18:20LHR-YUL
14h 35m1 stop
£447Lufthansa
Find Deal
Tue, 25 Nov - Thu, 4 Dec
American Airlines Logo
20:40 - 08:30YUL-LHR
6h 50mdirect
American Airlines Logo
07:50 - 22:59LHR-YUL
20h 09m2 stops
£454American Airlines
Find Deal
Thu, 4 Dec - Mon, 15 Dec
American Airlines Logo
20:40 - 08:30YUL-LHR
6h 50mdirect
American Airlines Logo
07:50 - 22:59LHR-YUL
20h 09m2 stops
£455American Airlines
Find Deal

Everything you should know

Our travellers' advice
AI-generated summary based on content written by travel experts
BA's premium economy offers extra legroom and comfort.
Security queues at YUL move quickly; arrive 90 mins early.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
TAP AIR PORTUGAL
Cheapest • from £418 (return)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 12% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
May
Cheapest • 11% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£418
Typical prices: £475-£571
TAP AIR PORTUGAL
Fri 16/1Tue 20/1
YUL - LHR • 1 stop
Cheapest direct flights
£443
Typical prices: £488-£599
Air Canada
Thu 13/11Mon 17/11
YUL - LHR • Direct
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 Heathrow!
Booking Insights

KAYAK's insights & trends for Montreal to Heathrow flights

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

How much is a return flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport departing in January.

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.

For Montreal to London Heathrow Airport, Sunday is the cheapest day to fly on average and Saturday is the most expensive. Flying from London Heathrow Airport back to Montreal, the best deals are generally found on Wednesday, with Saturday being the most expensive.

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 May, where tickets cost £498 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £706 and £633 respectively.

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

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of £572, prices are generally cheapest when you fly direct.

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 3 weeks before departure, which saves you about 12% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Expert advice

Expert advice for your flight from Montreal to Heathrow

 
Snippets provided in this section are AI-generated based on a summarisation 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
Lufthansa

Lufthansa's Premium Economy offers 50% more space and an extra 23 kg checked bag.


Lufthansa provides 11 special meal choices, including gluten-free and kosher, ordered 24 hours before departure.

Read more about Lufthansaby Jessica Macdonald
Air Canada

Air Canada's Signature Class features lie-flat seats with direct aisle access on long-haul flights.


Air Canada's Aeroplan offers free Wi-Fi messaging for members and high-value business-class redemptions.

Read more about Air Canadaby Stefanie Waldek
British Airways

BA's premium economy offers 18 cm extra legroom, priority boarding, and wider seats for long-haul comfort.


BA's Executive Club loyalty programme offers Avios points for flights and partner purchases.

Airports
YUL

Security queues at YUL move quickly. Arrive 90 minutes early; expect 20–30 minute waits even for general security.

Read more about YULby Brandon Schultz
LHR

The Heathrow Express takes you to London Paddington in 15 minutes. Buy tickets in advance for the best rate.

Read more about LHRby Kirstie Pickering
Our travel experts
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 travelled to more than 50 countries across six continents.

Read more
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 out at sea, likely en route to Antarctica or the Arctic.

Read more
Duncan Madden

Duncan Madden

Expert on British Airways

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
Brandon Schultz

Brandon Schultz

Expert on YUL

Brandon Schultz

Brandon Schultz

Brandon travels every week and makes friends with stray cats wherever he goes. Dogs, too... he once brought one home to the US from the Amalfi Coast. He’s written 6 books, visited 6 continents (still waiting on Antarctica), and would eat ice cream 6 times a day if he could. He lives in Brooklyn, New York, with his partner and three cats.

Read more
Kirstie Pickering

Kirstie Pickering

Expert on LHR

Kirstie Pickering

Kirstie Pickering

Aviation and business journalist Kirstie didn’t leave England until she was 18 years old, but has since travelled to over 20 countries including Japan, Canada, and Iceland. Her travel expertise lies in European city breaks, including how to find the best locally-owned hotels and restaurants and how to optimise the airport experience for your needs.

Read more

Good to know - Cheap tickets from Montreal to London Heathrow Airport

Low seasonJanuary
Cheapest flight£237
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly (2% more expensive on average)
Flight from Montreal to London Heathrow Airport

When to book flights from Montreal to Heathrow

Are your dates flexible? Find out the best times to travel from Montreal to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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 £237 for a one-way ticket and £418 for a return.

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

    Montreal airport is called Montreal Pierre Elliott Trudeau Intl and the only airport in London Heathrow Airport is London Heathrow.

  • 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?

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

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

    There are direct 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 £613 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 £504 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 travellers 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 return ticket. You could then fly to London Heathrow Airport 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 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 from London Heathrow Airport to Montreal? 25% of our users found flights on this route for £410 or less one-way and £497 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 3 airlines flying from Montreal to Heathrow

 
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 Heathrow? 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 11032 reviews
7.2Comfort
8.0Crew
7.5Boarding
6.4Food
6.9Entertainment
Airline reviews

Disliked having to wait a little longer to disembark from the plan when we landed in London

10.0 ExcellentLESTER, Oct 2025JFK - LHR
Read more American Airlines reviews

Disliked having to wait a little longer to disembark from the plan when we landed in London

Food should be better quality. Video screens have poor resolution and the library of movies is poor. The other airlines are much better.

The trip was smooth but the crew were very abrupt, snatching things before finished and being quite snappy when asked questions.

My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.

Lost luggage stuck no clothes and no word after 2 days leaving on cruise no stuff or clothes

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

It was crazy, boarded over a hour late from scheduled departure. Then when arrived in BNA issued with getting off the plane…over 1/2 hour. Not looking forward to flying Air Canada, ever again.

I hope they were able to assign my preferred seat on my connecting flight. Wasn’t sure if it was language issue or they just can’t.

Great flight. Only complaint is it took over an hour for my luggage to get to the carousel on the return to LAX That was irritating

The service to/from the airport/plane (wheelchair assistance for my mother in law) was exceptional. The staff was super friendly and courteous. The staff on the plane was also very nice. The food quality could have been better (mashed chicken sandwich).

The flight was great. I like it when airline capitalism give you information. For someone with flight jitters it really helps. And this captain was very cheery and reassuring. I had trouble understanding the head flight attendant because she spoke very fast. But overall staff were very helpful and kind.

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

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

Overall, it was basically good. No serious complaints on my end.

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The aircraft was okay and the crew were friendly, but the seat space felt too tight and the food could be better. Overall, nice service but room for improvement.

The flat beds. Other than that, the place was not clean.

It is a wonderful airline. The cabin crews were friendly and the food as well as the service the were excellent.

Good but could be better for comfort and entertainment aspect

Overall it was not a pleasant experience, I was given the middle seat even though I asked for a change they didn’t honor

No WiFi working on either flight. No leg room at all, the seat in front of me left dents in my knees. If I put the tray down, it was so low it was propped up by my knees. (I’m only 182.9 cm) I’m usually cool on planes, but the planes were both hot during taxi and take-off.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.