YUL - LHR

£231 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 27/7. 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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Flights 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, 8 Aug - Sun, 17 Aug
Lufthansa Logo
14:10 - 06:35YUL-LHR
11h 25m1 stop
Lufthansa Logo
14:05 - 16:15LHR-YUL
7h 10mdirect
£272Lufthansa
Find Deal
Sun, 14 Sep - Mon, 22 Sep
Austrian Airlines Logo
18:35 - 21:40YUL-LHR
22h 05m1 stop
Austrian Airlines Logo
10:25 - 13:50LHR-YUL
32h 25m1 stop
£370Austrian Airlines
Find Deal
Mon, 8 Sep - Mon, 15 Sep
Air Canada Logo
21:55 - 09:35YUL-LHR
6h 40mdirect
Air Canada Logo
09:30 - 11:40LHR-YUL
7h 10mdirect
£375Air Canada
Find Deal
Wed, 3 Sep - Wed, 24 Sep
Air Canada Logo
21:55 - 09:35YUL-LHR
6h 40mdirect
Air Canada Logo
08:40 - 15:00LHR-YUL
11h 20m1 stop
£390Air Canada
Find Deal
Wed, 3 Sep - Wed, 24 Sep
Air Canada Logo
21:55 - 09:35YUL-LHR
6h 40mdirect
Air Canada Logo
09:30 - 11:40LHR-YUL
7h 10mdirect
£392Air Canada
Find Deal
Mon, 8 Sep - Mon, 15 Sep
 Logo
21:55 - 09:35YUL-LHR
6h 40mdirect
 Logo
17:50 - 11:35LHR-YUL
22h 45m1 stop
Wed, 10 Sep - Sat, 20 Sep
 Logo
21:55 - 09:35YUL-LHR
6h 40mdirect
 Logo
11:05 - 11:35LHR-YUL
29h 30m1 stop
Sat, 29 Nov - Sun, 7 Dec
British Airways Logo
20:50 - 08:40YUL-LHR
6h 50mdirect
British Airways Logo
16:30 - 19:05LHR-YUL
7h 35mdirect
£438British Airways
Find Deal
Fri, 26 Sep - Sat, 11 Oct
British Airways Logo
22:00 - 09:40YUL-LHR
6h 40mdirect
British Airways Logo
18:05 - 20:15LHR-YUL
7h 10mdirect
£439British Airways
Find Deal
Sat, 25 Oct - Thu, 6 Nov
Finnair Logo
21:50 - 08:40YUL-LHR
6h 50mdirect
Finnair Logo
16:30 - 19:05LHR-YUL
7h 35mdirect
£455Finnair
Find Deal
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
Useful Info

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.

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 October, where tickets cost £484 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £679 and £628 respectively.

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. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.


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

Low seasonFebruary
High seasonSeptember
Cheapest flight£231
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly and prices are also 8% lower 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 £314 for a one-way ticket and £369 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, and Lufthansa 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 direct flights from Montreal to London Heathrow Airport on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from Montreal to London are Finnair and Air Canada. With an average price for the route of £615 and an overall rating of 7.6, Finnair is the most popular choice. Air Canada is also a great choice for the route, with an average price of £507 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 £365 or less one-way and £425 or less round-trip.

Prefer to fly direct from Montreal to London Heathrow Airport?

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

Aegean Airlines, Aer Lingus, Air Canada, +10 more

Aegean Airlines, Aer Lingus, +11 more

Tuesday

Aegean Airlines, Aer Lingus, Air Canada, +10 more

Aegean Airlines, Aer Lingus, +11 more

Wednesday

Aegean Airlines, Aer Lingus, Air Canada, +10 more

Aegean Airlines, Aer Lingus, +11 more

Thursday

Aegean Airlines, Aer Lingus, Air Canada, +10 more

Aegean Airlines, Aer Lingus, +11 more

Friday

Aegean Airlines, Aer Lingus, Air Canada, +10 more

Aegean Airlines, Aer Lingus, +11 more

Saturday

Aegean Airlines, Aer Lingus, Air Canada, +10 more

Aegean Airlines, Aer Lingus, +11 more

Sunday

Aegean Airlines, Aer Lingus, Air Canada, +10 more

Aegean Airlines, Aer Lingus, +11 more

See more direct flights

Direct returns

London Heathrow to Montreal Pierre Elliott Trudeau Intl

Monday

Aer Lingus, Air Canada, American Airlines, +7 more

Aer Lingus, Air Canada, +8 more

Tuesday

Aegean Airlines, Aer Lingus, Air Canada, +10 more

Aegean Airlines, Aer Lingus, +11 more

Wednesday

Aegean Airlines, Aer Lingus, Air Canada, +10 more

Aegean Airlines, Aer Lingus, +11 more

Thursday

Aer Lingus, Air Canada, American Airlines, +7 more

Aer Lingus, Air Canada, +8 more

Friday

Aegean Airlines, Aer Lingus, Air Canada, +10 more

Aegean Airlines, Aer Lingus, +11 more

Saturday

Aegean Airlines, Aer Lingus, Air Canada, +10 more

Aegean Airlines, Aer Lingus, +11 more

Sunday

Aegean Airlines, Aer Lingus, Air Canada, +10 more

Aegean Airlines, Aer Lingus, +11 more

See more direct flights
See more direct flights

Top 3 airlines serving 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.
7.6
FinnairOverall score based on 1290 reviews
6.9Entertainment
8.1Crew
7.4Comfort
7.6Boarding
6.7Food
Airline reviews

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

8.0 ExcellentAnonymous, May 2025CDG - ORD
Read more Finnair reviews

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

The staff were all particularly great. The plane was clean and fresh. The bassinet worked great. It was all very nice.

Boarding uncomfortable. Stewardess said I would have to check my carry on as there was no room in the overhead bins. Another passenger helped me find a spot.

Any flight that lands safely is a good flight. However our leg from Helsinki was delayed 1 hour with no explanation. The delay would not allow us to make our connection to Cincinnati. I was informed by American Airlines that our Cincinnati flight was rescheduled for the following day. I immediately made a non refundable hotel reservation in Dallas. Upon exiting the plane at Dallas I was given a hotel voucher. Nice, but I can't get a refund on the hotel I booked. A little communication would have been helpful. Food on Finnair is below quality of Korean Air.

The cabin crew really looked like they wanted to be somewhere else. They weren't really interested in providing an attentive service to full fare paying passengers at all. However the Captiain's in flight announcements were relaxed and very entertaining.

Crew were professional and responsive. Food was mediocre and breakfast could do with revampinmg

Food was very ordinary for premium economy, very small portions.

i dont know WHY they call it business class. the seats are NOT significantly wider than economy seats, they just do not let the middle seats be beepked to give the illusion of more space between passengers. the seats do NOT recline any more than economy seats either. the only real difference is the full meal served to business (vs none for economy). I would rather have a wider, lie flat ACTUAL business class seat with no food for a 3 hr flight. this was pretty disappointing to say the least.

There wore nice leather like sits, in my opinion seats lay out bit tight . Crew was great they did averything possible to make averywone comfortable as possible, food was, think worst I ever head on flight, head chicken and yellow rice. Ice cream was a nic treat.

Our previous flight was delayed but they waited for us to board.

Service Director cut all cabin lights and window screens defaulted to dark, but it was an afternoon flight going west. I spent hours trying to see what was reading as reading lights weren't working either. What the hell.

The food could have been better. The flight attendant was the friendliest and most helpful I have ever had.

Almost no food given on a 5-hour flight (only a cookie, which is almost a joke). Boarding was a mess (as always, in Montreal boarding by zones is chaotic and the lines are a total mess). The entertainment system was old and with a limited selection.

Very nice comfortable spacy Airbus 321. I liked the offer of food on the Bistro menu. The idea is very good to pay and cost was low.

Received email saying that there won’t be a seat back entertainment screen and inflight WiFi would be available. But no WiFi both ways. Say it in the email.

Staff was very attentive! Food was good for premium economy airplane food. Clearly an older plane - seat back had to be pulled up manually after being reclined.

Good, only discomfort was consistent turbulence through the 3 hour flight. Not sure if in companies control though.

No frills very ordinary, charged me twice to book my seat assignment will.need to complain for reimbursement.

Everything ok, but it was a lot of turbulence during the flight.

Crew was pleasant and efficient. The speaker system for instructions was hard to understand

The payment system was not working so was unable to connect wifi the entire flight

The boarding call announcements versus the Staff announcements versus the digital signage board on the out-going and returning flights WERE NOT IN SYNC. I was sent through check and re-checks 3 times. WHY?

Absolutely the worst airline. Can’t find anything positive to say. We were in business which is the same as most airlines coach

everything to do with KAYAK was terrible. Your customer facing departments are utterly useless, timewasting and unhelpful.

I ordered short ribs for main course. It tasted sweet, really sweet. Horrible.

When checking our bags we were told our bags would go through our final destination. This did not happen. When boarding, after group 3 it was a free for all, everyone boards. When served lunch, I asked for anything without dairy, I was given popcorn and gummy snacks. She said she would come back with more options, she never did. Also, when traveling through London, they don’t tell you your gate number until 1 hour before flight leaves, causing everyone to run to their gate.

Full flight, but crew was great. No wifi and no seatback entertainment, so had to read...argh!

The screen didn’t work and I didn’t get the seat upgrade I paid $300 for. They were no help with that,

The crew did not really interact with me which was no problem as I was fine. I did see that they were somewhat short with some passengers but that was not common. Just in general, they did not seem friendly - no requirement to be so but I am used to a friendly crew on most flights. The food was just ok but with a flight that large, I would think it hard to make something more elaborate.

Paid $180 for seat selection, and selection essnt honored. Have to call for a refund.

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

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