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Cheap flights from Montreal to London from £221

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 23/1. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — LON
17 Jan — 24 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Montreal to London are usually found in May or November, booked 49 days in advance, depart on a Sunday or Friday and return on a Wednesday

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 18 December 2025.

Wed 31/1216:00YUL - LHR
1 stop12h 20mMultiple Airlines
Wed 21/109:00LHR - YUL
1 stop11h 10mMultiple Airlines
Deal found 16/12£485
Tue 30/1221:30YUL - LHR
1 stop18h 05mAir Canada
Wed 14/106:50LHR - YUL
1 stop9h 55mAir Canada
Deal found 15/12£499
Wed 31/1219:30YUL - LHR
Nonstop6h 40mAir Canada
Wed 21/113:25LHR - YUL
Nonstop7h 40mAir Canada
Deal found 16/12£505
Tue 30/1219:30YUL - LHR
Nonstop6h 40mAir Canada
Mon 12/113:25LHR - YUL
Nonstop7h 45mAir Canada
Deal found 15/12£506
Mon 29/1217:10YUL - LHR
1 stop10h 20mAir Canada
Mon 12/109:00LHR - YUL
1 stop13h 35mAir Canada
Deal found 15/12£511
Mon 29/1217:10YUL - LHR
1 stop10h 20mAir Canada
Tue 13/111:10LHR - YUL
1 stop13h 48mAir Canada
Deal found 15/12£516
Wed 31/1217:15YUL - LHR
2 stops13h 05mAir Canada
Wed 14/106:50LHR - YUL
1 stop9h 55mAir Canada
Deal found 15/12£539
Wed 24/1207:08YUL - LHR
1 stop23h 52mMultiple Airlines
Mon 29/1214:45LHR - YUL
1 stop12h 54mMultiple Airlines
Deal found 15/12£541
Sat 27/1219:30YUL - LHR
Nonstop6h 40mAir Canada
Mon 12/113:25LHR - YUL
Nonstop7h 45mAir Canada
Deal found 16/12£561
Wed 31/1221:40YUL - LGW
1 stop15h 05mMultiple Airlines
Wed 21/107:55LGW - YUL
1 stop16h 45mMultiple Airlines
Deal found 16/12£581
Wed 31/1217:25YUL - LGW
1 stop11h 20mAir Transat
Wed 21/111:40LGW - YUL
1 stop14h 15mAir Transat
Deal found 16/12£583
Mon 29/1210:15YUL - LGW
1 stop18h 30mAir Transat
Sat 10/111:40LGW - YUL
1 stop26h 40mAir Transat
Deal found 15/12£593

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 18 December 2025.

Round-trip from

£442

One-way from

£221

Popular in

December

Cheapest in

May

Average price

£662

Good round-trip deal

£455 or less

Good one-way deal

£431 or less
Porter Airlines
  • Porter Airlines
  • 17/3-1/4
  • 2 total stops
  • 56h 15m total
  • Montreal to London
Search Deals
23/1
  • 23/1
  • 2 total stops
  • 20h 25m total
  • Montreal to London
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£16 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 18 December 2025.
Use the filters below to find and compare flights from Montreal to London that are best for you.

Fly from

Montreal

Fly to

London

Route

Depart

Return

Price

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Sun 5/4

19:20-10:45

1 stop10h 25m

London Gatwick

Sat 11/4

12:40-00:35

1 stop16h 55m

£444

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Wed 1/4

19:20-10:45

1 stop10h 25m

London Gatwick

Sat 11/4

12:40-00:35

1 stop16h 55m

£444

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

Mon 12/1

20:10-21:50

1 stop20h 40m

London Luton

Mon 19/1

18:35-12:40

1 stop23h 05m

£446

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

Tue 17/3

21:10-17:50

1 stop16h 40m

London Luton

Wed 1/4

06:00-12:50

1 stop11h 50m

£449

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Wed 22/4

17:25-10:45

1 stop12h 20m

London Gatwick

Fri 1/5

12:40-09:02

1 stop25h 22m

£449

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Thu 23/4

06:45-10:45

1 stop23h 00m

London Gatwick

Sun 3/5

11:35-14:15

Nonstop7h 40m

£449

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Fri 8/5

10:00-10:45

1 stop19h 45m

London Gatwick

Sun 10/5

11:35-14:15

Nonstop7h 40m

£449

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Thu 21/5

16:15-10:45

1 stop13h 30m

London Gatwick

Sat 23/5

11:35-14:15

Nonstop7h 40m

£449

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Wed 14/1

21:45-10:00

2 stops31h 15m

London Gatwick

Wed 28/1

10:40-20:15

1 stop14h 35m

£453

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Fri 3/4

18:20-10:45

1 stop11h 25m

London Gatwick

Sun 5/4

12:40-00:35

1 stop16h 55m

£453

Flights are sorted by cheapest return flights first.

Deals found on 16/12

Showing 1-10 of 60 results
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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?

Use this chart to determine the optimal time to book a return flight from Montreal to London. Price data was last updated on 12 December 2025.

The best time to book flights from Montreal to London is 49 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, December is the cheapest month in which you can book a flight from Montreal to London (average of £257). Flying from Montreal to London in July is currently the most expensive (average of £482). 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 18 December 2025.

Unlike at midday, when flights are generally more expensive, you can save up to 31% on flights from Montreal to London by exploring options for tickets in the afternoon.

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 18 December 2025.

The most flights from YMQ to LON are scheduled on a Wednesday (14 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (6 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.

Toronto (YYZ) – chosen by Cheapflights users on 48% 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 £426.

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 19% of weekly flights between Montreal and London have experienced delays in the past year, with the average delay time being 165 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?

Wednesday tends to have the lowest number of delays on this route, whereas Monday 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 7% 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 18 December 2025.
Read reviews from past customers who have flown with Porter Airlines, Air Transat, andAir Canada 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.
Porter Airlines
8.0
Very Good
399 reviews
Check prices

Overall

8.0

Crew

8.6

Comfort

7.9

Entertainment

7.0

Food

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
8.0
Very Good
399 reviews
Porter Airlines
8.0
Very Good
399 reviews
Check prices

Overall

8.0

Crew

8.6

Comfort

7.9

Entertainment

7.0

Food

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Transat
7.8
Good
483 reviews
Porter Airlines
8.0
Very Good
399 reviews
Check prices

Overall

8.0

Crew

8.6

Comfort

7.9

Entertainment

7.0

Food

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,534 reviews
Porter Airlines
8.0
Very Good
399 reviews
Check prices

Overall

8.0

Crew

8.6

Comfort

7.9

Entertainment

7.0

Food

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
British Airways
6.7
Okay
7,585 reviews
Porter Airlines
8.0
Very Good
399 reviews
Check prices

Overall

8.0

Crew

8.6

Comfort

7.9

Entertainment

7.0

Food

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

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 9h 20m. Fly via Air Transat, Delta, or KLM 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 £400. Additional return tickets that might be worth considering are offered by British Airways and Lufthansa, with the lowest prices starting at £412 and £455, respectively. You may be able to fly from Montreal to London for 22% 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 Gatwick 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 Air Canada (72%), American Airlines (70%) and Aer Lingus (70%).

  • What are the cheapest flights from Montreal to London?

    On average you can expect to pay £875 for a flight from Montreal to London. The cheapest flight overall is £415 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow) is currently priced at £354.

  • 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, December is the cheapest month in which you can book a flight from Montreal to London (average of £257). Flying from Montreal to London in July is currently the most expensive (average of £482). 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 3 airlines flying from Montreal to London

Discover the top 3 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 18 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£400Average£519FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£412Average£602FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£455Average£625FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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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