YUL - LHR

£221 Find Cheap Flights from Montreal to London Heathrow Airport – 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 Heathrow departing on 1/10. 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

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Everything you should know

Cheapest return fare
£399
Typical prices: £470-£610
Brussels Airlines, SWISS
Sun 6/9Tue 8/9
YUL - LHR • 1 stop
Cheapest direct flights
£457
Typical prices: £462-£592
Air Canada
Sun 27/9Fri 2/10
YUL - LHR • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Lufthansa Premium Economy adds 50% more space and an extra 23 kg checked bag.
BA premium economy adds 18 cm legroom, wider seats, and priority boarding.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from £401 (return)
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Direct flights
You can fly direct with Air Canada and British Airways. Average duration is 6h 46m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 77% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 6 weeks in advance save around 13% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 17% price drop
Most popular
Good to know
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
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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 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

Sun, 6 Sep - Tue, 8 Sep
Multiple Airlines Logo
18:25 - 21:35
YUL
-
LHR
22h 10m
1 stop
Multiple Airlines Logo
18:40 - 15:00
LHR
-
YUL
25h 20m
1 stop
£399Multiple Airlines
Thu, 1 Oct - Thu, 8 Oct
TAP AIR PORTUGAL Logo
22:45 - 22:55
YUL
-
LHR
19h 10m
1 stop
TAP AIR PORTUGAL Logo
06:00 - 21:10
LHR
-
YUL
20h 10m
1 stop
£401TAP AIR PORTUGAL
Wed, 25 Nov - Sat, 28 Nov
TAP AIR PORTUGAL Logo
21:45 - 18:55
YUL
-
LHR
16h 10m
1 stop
TAP AIR PORTUGAL Logo
19:55 - 19:55
LHR
-
YUL
29h 00m
1 stop
£406TAP AIR PORTUGAL
Sun, 27 Sep - Wed, 7 Oct
TAP AIR PORTUGAL Logo
22:45 - 22:00
YUL
-
LHR
18h 15m
1 stop
TAP AIR PORTUGAL Logo
18:45 - 21:10
LHR
-
YUL
31h 25m
1 stop
£406TAP AIR PORTUGAL
Fri, 13 Nov - Sun, 15 Nov
Air Canada Logo
17:10 - 11:20
YUL
-
LHR
13h 10m
1 stop
Air Canada Logo
09:05 - 13:20
LHR
-
YUL
33h 15m
1 stop
£434Air Canada
Fri, 25 Sep - Sun, 27 Sep
Air Canada Logo
13:10 - 11:50
YUL
-
LHR
17h 40m
2 stops
Air Canada Logo
11:05 - 10:40
LHR
-
YUL
28h 35m
1 stop
£448Air Canada
Wed, 26 Aug - Wed, 2 Sep
Air Canada Logo
22:00 - 21:00
YUL
-
LHR
18h 00m
1 stop
Air Canada Logo
08:40 - 15:00
LHR
-
YUL
11h 20m
1 stop
£450Air Canada
Tue, 15 Sep - Wed, 20 Jan
British Airways Logo
22:00 - 09:40
YUL
-
LHR
6h 40mdirect
British Airways Logo
16:45 - 19:15
LHR
-
YUL
7h 30mdirect
£473British Airways
Tue, 15 Sep - Wed, 20 Jan
British Airways Logo
22:00 - 09:40
YUL
-
LHR
6h 40mdirect
British Airways Logo
16:45 - 19:15
LHR
-
YUL
7h 30mdirect
£474British Airways
Tue, 15 Sep - Wed, 20 Jan
British Airways Logo
22:00 - 09:40
YUL
-
LHR
6h 40mdirect
British Airways Logo
16:45 - 19:15
LHR
-
YUL
7h 30mdirect
£475British Airways
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 September.

Flight prices are below average for this route right now.

Flights to London Heathrow Airport from Montreal Pierre Elliott Trudeau Intl Airport usually cost between £555 and £721 in September.
The lowest price found in the past 5 days was £399 on Multiple Airlines (6 Sept–8 Sept).

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 Friday, with Sunday 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 November, where tickets cost £465 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is £678 and £625 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 £580, 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 6 weeks before departure, which saves you about 13% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Expert advice

Expert advice for your flight from Montreal to Heathrow

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

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.

Stefanie Waldek

Stefanie Waldek

Expert on Air Canada

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.

Duncan Madden

Duncan Madden

Expert on British Airways

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.

Brandon Schultz

Brandon Schultz

Expert on YUL

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.

Kirstie Pickering

Kirstie Pickering

Expert on LHR

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.

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

Low season

February

Cheapest flight

£221
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (8% 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 5 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport was £219 for a one-way ticket and £399 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?

    Lufthansa, and Air Canada 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, Air Canada or British Airways?

    The two airlines most popular with KAYAK users for flights from Montreal to London are Air Canada and British Airways. With an average price for the route of £511 and an overall rating of 7.1, Air Canada is the most popular choice. British Airways is also a great choice for the route, with an average price of £608 and an overall rating of 6.7.

  • 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 £362 or less one-way and £519 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 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.
7.1
Air CanadaOverall score based on 11407 reviews
7.3Boarding
7.1Comfort
7.8Crew
6.8Entertainment
6.3Food
Airline reviews

It was great to have a vegetarian meal option, but departure was delayed because they had oversold the flight. Air Canada, you’re in charge of how many tickets are sold: don’t oversell!

6.0 GoodAnonymous, Mar 2026
YYC - LHR
Read more Air Canada reviews

It was great to have a vegetarian meal option, but departure was delayed because they had oversold the flight. Air Canada, you’re in charge of how many tickets are sold: don’t oversell!

I liked the quiet airport and no queue. I don't like that when booking it is not clear that there is teared economy, that you have to pay extra for choosing a seat and for your luggage both ways. We didn't find this out until checking in. It turned out not very economical.

In flight entertainment system did not work across the whole plane for entire flight. Seats were very cramped. Cabin temperature was freezing cold. Crew was miserable and answered everyone in a short and barking manner. I’ve flown air Canada many many times and never had an issue. But this was unpleasant.

They screwed up so bad, I asked for a short check for my luggage since we had a 21 hour overnight layover in London at a hotel. They said I have to receive my luggage in London because it’s an overnight layover. Get to London, nope, my bags aren’t coming off they are staying in terminal 5 over night and going straight to Ibiza. So we had no luggage for a whole day and basically stuck with no clothes or washroom stuff. Finally get to Ibiza and my luggage is completely smashed and damaged and missing a wheel. Now I have to drag this 50 lbs luggage around Ibiza islands for 10 days. Wtf. So pissed off Air Canada is LITERALLY THE WORST AIRLINE IN THE WORLD

Great flight ✈️ I requested a vegan meal and don’t think offering frozen fruit cup for breakfast is a good idea people want something warm or neutral like the muffin but it was cold from being in the paper bag with the frozen fruit 🧐 and unfortunately I didn’t have either and I don’t like wasting food so that was a disappointment. Flight was on time departure and arrival flight crew were good.

From my experience, I see there is room for a greater mixture of cultures, for example, a mix of the nationality of cabin crews, food, music, food, etc.

Fight left on time Food was good Lots of entertainment Very uncomfortable

I was suppose to be preboarded, because of my child's allergies, but it wasn't done.

After we arrived at our gate, security staff changed it to"international", and rudely refused to explain to my wife why she could not go to the nearest restroom.

Didn’t even make this flight bc air Canada caused me to miss it and make an extra stop in Lyon France

All good, professional service, and arrived close to on time.

Need thicker and wider blankets. Food was below standard especially in the fist leg.

Decrepit planes, poor business class layout designed to maximize revenue, no decent movie selection.

Boarding was efficient. Flight left on time. Wasn’t full so we could spread out a bit. Food was ok.

The A350 is a great plane but BA's seating was incredibly tight (eg compared to the same plane as flown by BA's partner Finnair) and with a middle seat it was very claustrophobic

Staff and crew where very nice and friendly. Just need to improve the timming om the meal and beverages.

Lost bag - again. No help from staff at Nice - they have a handling agent who does nothing No emergency kit Try calling BA - they eventually found the bag - now on later flight. Trying to get someone to help in the short term is impossible. If I am unhappy - then I have to log it on a website. The agent said he was only able to help with future bookings - not assist in the chaos BA had caused. IF YOU WANT SERVICE WHEN THINGS GO WRONG - PICK ANYONE BUT BA. Personally - I'm joining ABBA (Anyone But BA) again.

The seat was a bit crowded since the person in front was reclined. It’s my personal belief that if the seats are allowed to recline, there should be more room. The service provided by the crew was the best I have experienced.

Was downgraded from Premium Economy to Economy and no indication of any compensation.

we departed 5 hours late. Instead of 10pm it was after 2AM and the business lounge thew us out at 1AM and everyone was standing around the boarding gates. When we did board, the crew was nice, served dinner and then was not to be seen again until we landed. No breakfast (which is not great for diabetes)

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

Information on your arrival and departure airports