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Cheap flights from Montreal to London from £250

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 26/9. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — LON
18 Jul — 25 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Montreal to London are usually found in September or October, booked 65 days in advance, depart on a Sunday or Monday 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 18 June 2026.

Wed 16/917:45
YUL
-
STN
2 stops21h 35m
Multiple Airlines
Mon 21/920:50
STN
-
YUL
3 stops32h 35m
Multiple Airlines
Deal found 15/6£420
Wed 23/920:35
YUL
-
LGW
1 stop30h 20m
Air Transat
Fri 2/1012:40
LGW
-
YUL
1 stop16h 57m
Air Transat
Deal found 16/6£420
Thu 30/719:00
YUL
-
LHR
1 stop13h 45m
Virgin Atlantic
Sat 8/811:45
LHR
-
YUL
1 stop10h 10m
Virgin Atlantic
Deal found 15/6£420
Sun 13/906:45
YUL
-
LTN
2 stops34h 35m
Multiple Airlines
Tue 22/905:40
LTN
-
YUL
3 stops23h 45m
Multiple Airlines
Deal found 15/6£420
Tue 13/1017:00
YUL
-
LGW
1 stop12h 45m
Porter Airlines
Wed 21/1012:40
LGW
-
YUL
1 stop11h 52m
Porter Airlines
Deal found 17/6£421
Wed 29/706:45
YUL
-
LGW
1 stop20h 10m
Porter Airlines
Wed 5/809:40
LGW
-
YUL
1 stop14h 52m
Porter Airlines
Deal found 14/6£421
Fri 3/722:05
YUL
-
LGW
Nonstop6h 45m
Air Transat
Wed 8/709:40
LGW
-
YUL
1 stop14h 52m
Air Transat
Deal found 14/6£422
Thu 10/920:35
YUL
-
LGW
1 stop9h 10m
Air Transat
Wed 23/911:35
LGW
-
YUL
Nonstop7h 40m
Air Transat
Deal found 18/6£423
Tue 8/918:00
YUL
-
LGW
1 stop11h 45m
Porter Airlines
Wed 23/909:40
LGW
-
YUL
1 stop12h 22m
Porter Airlines
Deal found 18/6£424
Tue 20/1017:00
YUL
-
LGW
1 stop12h 45m
Porter Airlines
Tue 3/1111:40
LGW
-
YUL
1 stop15h 40m
Porter Airlines
Deal found 14/6£424
Wed 4/1107:00
YUL
-
LHR
1 stop23h 05m
United Airlines
Fri 6/1111:05
LHR
-
YUL
2 stops56h 57m
United Airlines
Deal found 15/6£424
Mon 27/714:35
YUL
-
LGW
1 stop15h 10m
Air Transat
Mon 17/811:35
LGW
-
YUL
Nonstop7h 40m
Air Transat
Deal found 18/6£425

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 June 2026.

Round-trip from

£420

One-way from

£250

Popular in

December

Cheapest in

September

Average price

£558

Good round-trip deal

£414 or less

Good one-way deal

£338 or less
16/9-21/9
  • 16/9-21/9
  • 5 total stops
  • 54h 10m total
  • Montreal to London
Search Deals
26/9
  • 26/9
  • 3 total stops
  • 32h 50m total
  • Montreal to London
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 18 June 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

Wed 22/7

22:05-09:50

Nonstop6h 45m

London Gatwick

Mon 10/8

09:40-17:02

1 stop12h 22m

£444

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Mon 14/9

18:00-10:45

1 stop11h 45m

London Gatwick

Thu 17/9

12:40-00:37

1 stop16h 57m

£446

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Mon 17/8

21:00-16:00

1 stop14h 00m

London Gatwick

Tue 25/8

10:35-18:25

1 stop12h 50m

£470

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Wed 19/8

17:00-09:25

1 stop11h 25m

London Gatwick

Tue 25/8

10:35-18:25

1 stop12h 50m

£470

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 1/9

18:40-06:30

Nonstop6h 50m

London Heathrow

Tue 8/9

14:05-16:40

Nonstop7h 35m

£480

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

Wed 16/9

23:45-18:20

1 stop13h 35m

London Luton

Mon 21/9

07:05-17:20

1 stop15h 15m

£480

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

Thu 12/11

20:10-17:15

1 stop16h 05m

London Luton

Thu 19/11

18:35-12:40

1 stop23h 05m

£485

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 22/7

14:29-12:10

1 stop16h 41m

London Heathrow

Sat 1/8

18:35-18:54

1 stop29h 19m

£488

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

Sun 13/9

23:25-22:50

1 stop18h 25m

London Luton

Wed 23/9

06:25-16:15

1 stop14h 50m

£499

MontrealLondon

YUL - LCY

YULLCY

Montreal Pierre Elliott Trudeau Intl

Tue 29/9

17:10-12:35

2 stops14h 25m

London City

Tue 20/10

19:15-15:00

1 stop24h 45m

£503

Flights are sorted by cheapest return flights first.

Deals found on 17/6

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

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 £436). Flying from Montreal to London in February is currently the most expensive (average of £934). 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 June 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 18 June 2026.

The most flights from YMQ to LON are scheduled on a Wednesday (18 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (9 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 £511.

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.

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

The best time to book flights from Montreal to London is 22 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.

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 June 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
555 reviews
Check prices

Boarding

7.9

Overall

7.8

Food

6.8

Crew

8.5

Entertainment

7.1

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
555 reviews
Air Transat
7.8
Good
555 reviews
Check prices

Boarding

7.9

Overall

7.8

Food

6.8

Crew

8.5

Entertainment

7.1

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
11,212 reviews
Air Transat
7.8
Good
555 reviews
Check prices

Boarding

7.9

Overall

7.8

Food

6.8

Crew

8.5

Entertainment

7.1

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
8,054 reviews
Air Transat
7.8
Good
555 reviews
Check prices

Boarding

7.9

Overall

7.8

Food

6.8

Crew

8.5

Entertainment

7.1

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, Porter Airlines, or Delta 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 British Airways is currently your cheapest option to London, with prices starting at £409. Another option worth looking into is Air Canada, starting at £424 return. You may be able to fly from Montreal to London for 21% 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 Austrian Airlines (86%), United Airlines (86%) and Lufthansa (86%).

  • What are the cheapest flights from Montreal to London?

    On average you can expect to pay £653 for a flight from Montreal to London. The cheapest flight overall is £442 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow) is currently priced at £454.

  • 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 £436). Flying from Montreal to London in February is currently the most expensive (average of £934). 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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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 18 June 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£409Average£603FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air CanadaCheapest£424Average£503FlexibilityNo cancel feeOn-time67%
Search Air Canada 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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