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Cheap flights from Montreal to London from £256

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/5. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — LON
31 May — 7 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Montreal to London are usually found in September or May, booked 65 days in advance, depart on a Sunday or Friday and return on a Friday

Cheap flight deals from Montreal to London

Enter your travel dates to find the best prices.

Cheapest flights from Montreal to London
Explore the most affordable flight options available from Montreal to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 May 2026.

Thu 4/622:05
YUL
-
LGW
Nonstop6h 45m
Air Transat
Wed 17/611:35
LGW
-
YUL
Nonstop7h 40m
Air Transat
Deal found 26/4£434
Tue 2/606:45
YUL
-
STN
2 stops32h 45m
Multiple Airlines
Thu 11/617:55
STN
-
YUL
2 stops32h 05m
Multiple Airlines
Deal found 26/4£435
Fri 5/615:10
YUL
-
LGW
1 stop14h 35m
Air Transat
Mon 8/609:40
LGW
-
YUL
1 stop15h 50m
Air Transat
Deal found 25/4£435
Tue 19/516:15
YUL
-
LGW
1 stop13h 30m
Air Transat
Thu 4/612:40
LGW
-
YUL
1 stop26h 22m
Air Transat
Deal found 25/4£435
Wed 3/620:35
YUL
-
LGW
1 stop30h 20m
Air Transat
Mon 8/612:40
LGW
-
YUL
1 stop11h 50m
Air Transat
Deal found 26/4£436
Sun 24/520:35
YUL
-
LGW
1 stop9h 10m
Air Transat
Sat 30/511:35
LGW
-
YUL
Nonstop7h 40m
Air Transat
Deal found 27/4£437
Thu 21/522:05
YUL
-
LGW
Nonstop6h 45m
Air Transat
Sun 31/512:40
LGW
-
YUL
1 stop11h 40m
Air Transat
Deal found 27/4£437
Fri 5/606:45
YUL
-
STN
2 stops35h 20m
Multiple Airlines
Tue 9/615:30
STN
-
YUL
2 stops34h 30m
Multiple Airlines
Deal found 25/4£438
Mon 8/616:15
YUL
-
LGW
1 stop10h 40m
Air Transat
Mon 15/611:35
LGW
-
YUL
Nonstop7h 40m
Air Transat
Deal found 25/4£438
Fri 22/516:15
YUL
-
LTN
2 stops20h 10m
Multiple Airlines
Fri 29/506:20
LTN
-
YUL
2 stops18h 10m
Multiple Airlines
Deal found 26/4£438
Tue 16/606:45
YUL
-
STN
2 stops32h 45m
Multiple Airlines
Wed 2/906:30
STN
-
YUL
3 stops22h 55m
Multiple Airlines
Deal found 26/4£439
Mon 1/620:35
YUL
-
LGW
1 stop9h 10m
Air Transat
Mon 8/611:35
LGW
-
YUL
Nonstop7h 40m
Air Transat
Deal found 27/4£439

Find flight deals from Montreal to London

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 1 May 2026.

Round-trip from

£434

One-way from

£256

Popular in

December

Cheapest in

September

Average price

£441

Good round-trip deal

£454 or less

Good one-way deal

£341 or less
Air Transat
  • Air Transat
  • 4/6-17/6
  • Nonstop
  • 14h 25m total
  • Montreal to London
Search Deals
Air Transat
  • Air Transat
  • 29/5
  • Nonstop
  • 6h 45m total
  • Montreal to London
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£4 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Montreal (YMQ) to London (LON).
Search Deals
Price to beat on a one-way flight from Montreal (YMQ) to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Montreal to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 1 May 2026.
Use the filters below to find and compare flights from Montreal to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Thu 24/9

22:05-09:50

Nonstop6h 45m

London Gatwick

Thu 1/10

12:40-19:20

1 stop11h 40m

£456

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

Sun 7/6

21:30-22:55

1 stop20h 25m

London Luton

Wed 17/6

19:20-11:35

1 stop21h 15m

£480

MontrealLondon

YUL - SEN

YULSEN

Montreal Pierre Elliott Trudeau Intl

Mon 25/5

23:45-07:55

1 stop27h 10m

London Southend

Tue 9/6

06:30-17:20

1 stop15h 50m

£480

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

18:50-22:35

1 stop22h 45m

London Luton

Fri 5/6

19:00-11:35

1 stop21h 35m

£500

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

Tue 26/5

19:00-13:15

1 stop13h 15m

London Luton

Tue 2/6

19:10-14:00

1 stop23h 50m

£510

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

Thu 11/6

22:20-23:15

1 stop19h 55m

London Luton

Sun 21/6

19:00-14:00

1 stop24h 00m

£516

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

Tue 26/5

19:00-00:10

1 stop24h 10m

London Luton

Tue 9/6

19:10-14:00

1 stop23h 50m

£516

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Thu 4/6

13:20-10:40

2 stops16h 20m

London Heathrow

Wed 10/6

09:30-22:06

1 stop17h 36m

£520

MontrealLondon

YUL - LCY

YULLCY

Montreal Pierre Elliott Trudeau Intl

Mon 8/6

18:50-09:30

1 stop9h 40m

London City

Thu 18/6

10:00-16:55

1 stop11h 55m

£525

MontrealLondon

YUL - LCY

YULLCY

Montreal Pierre Elliott Trudeau Intl

Tue 15/9

18:50-08:50

1 stop9h 00m

London City

Fri 25/9

08:25-16:55

1 stop13h 30m

£545

Flights are sorted by cheapest return flights first.

Deals found on 26/4

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Montreal to London

Have a flexible travel schedule? Discover the best time to fly to London from Montreal with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Montreal to London?

The best time to book flights from Montreal to London is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Montreal to London?

Currently, September is the cheapest month in which you can book a flight from Montreal to London (average of £432). Flying from Montreal to London in February is currently the most expensive (average of £856). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YMQ to LON?

Find hourly flight availability from Montreal to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 May 2026.

When flying from Montreal to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Montreal to London

Explore weekly flight availability from Montreal to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 1 May 2026.

The most flights from YMQ to LON are scheduled on a Tuesday (18 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (13 on average).

How much does it cost for a return flight from Montreal to London?

What’s the top stopover airport for flights from Montreal to London?

Share of one-stop return flights from Montreal to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Newark (EWR) – chosen by Cheapflights users on 29% of one-stop itineraries from Montreal to London on Cheapflights.

What’s the cheapest stopover airport for flights from Montreal to London?

Average return fare for one-stop flights from Montreal to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Toronto (YYZ) is the most affordable one-stop option, with an average return flight price of £506.

What’s the fastest stopover option from Montreal to London?

Shortest average travel time for one-stop one-way flights from Montreal to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 9h 00m.

Which airport typically offers the quickest stopover for flights from Montreal to London?

Average stopover duration for one-stop one-way flights from Montreal to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 05m.

How often are flights from Montreal to London delayed?

About 20% of weekly flights between Montreal and London have experienced delays in the past year, with the average delay time being 154 minutes.

What is the most punctual flight time for Montreal to London flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Montreal to London flights?

Over the past year, Air Transat have had the lowest number of delays on this route, with just 10% of flights being delayed.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 1 May 2026.
Read reviews from past customers who have flown with Air Transat,Air Canada, andBritish Airways from Montreal to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Transat
7.8
Good
543 reviews
Check prices

Crew

8.5

Food

6.8

Entertainment

7.1

Boarding

7.9

Overall

7.8

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.
Air Transat
7.8
Good
543 reviews
Air Transat
7.8
Good
543 reviews
Check prices

Crew

8.5

Food

6.8

Entertainment

7.1

Boarding

7.9

Overall

7.8

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.
Air Canada
7.1
Good
10,982 reviews
Air Transat
7.8
Good
543 reviews
Check prices

Crew

8.5

Food

6.8

Entertainment

7.1

Boarding

7.9

Overall

7.8

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.
British Airways
6.7
Okay
7,937 reviews
Air Transat
7.8
Good
543 reviews
Check prices

Crew

8.5

Food

6.8

Entertainment

7.1

Boarding

7.9

Overall

7.8

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

YOW - GCM

The flight was delayed for 3.5 hours. No compensation for a meal voucher. We were positioned at the back of the plane and the toilets were not working properly. It was a foul smell coming from the toilet.

Related info for your journey

Find useful and relevant information for your journey from Montreal to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Montreal to London?

    There are many flights that can get you from Montreal to London in 6h 45m. Fly via Air Transat, SWISS, or Virgin Atlantic to get the fastest option. Montreal and London are separated by a distance of 3258 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Montreal to London round-trip?

    Flying on Air Canada is currently your cheapest option to London, with prices starting at £401. Another option worth looking into is British Airways, starting at £407 return. You may be able to fly from Montreal to London for 20% less than the average price by searching for these airlines.

  • What are the most popular routes from Montreal to London?

    When deciding which route to take from Montreal to London consider Montreal Pierre Elliott Trudeau Intl - London Heathrow, Montreal Pierre Elliott Trudeau Intl - London Stansted or Montreal Pierre Elliott Trudeau Intl - London City as they are the most popular.

  • What are the most reliable airlines from Montreal to London?

    The top 3 most reliable airlines when flying from Montreal to London are Thai Airways (85%), American Airlines (83%) and Aer Lingus (83%).

  • What are the cheapest flights from Montreal to London?

    On average you can expect to pay £563 for a flight from Montreal to London. The cheapest flight overall is £440 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow) is currently priced at £462.

  • Can I find deals for flights from Montreal to London that include hotel bookings?

    Yes. In addition to deals on Montreal to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Montreal to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montreal to London.

  • Can I find deals for business class flights from Montreal to London?

    Yes. Cheapflights offers flight deals from Montreal to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montreal to London?

    Currently, September is the cheapest month in which you can book a flight from Montreal to London (average of £432). Flying from Montreal to London in February is currently the most expensive (average of £856). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
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Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Montreal to London

Discover the top 2 airlines that operate flights from Montreal to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 1 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£401Average£482FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£407Average£598FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Montreal to London?

When you search for this flight from Montreal to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Montreal to London?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from Montreal.

Can Cheapflights find flights from Montreal to London with no change fees?

Yes! Cheapflights helps users easily find flights from Montreal to London with no change fees.

Can Cheapflights notify me if prices for flights from Montreal to London become cheaper?

Yes! Start tracking prices for Montreal to London flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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