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Cheap flights from Montreal to London from £248

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 23/7. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — LON
18 6月 — 25 6月1
1 adult

Cheapflights Tip: The best prices from Montreal to London are usually found in May or September, booked 41 days in advance, depart on a Sunday or Tuesday and return on a Wednesday

Cheap 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 13 6月 2025.

Round-trip from

£380

One-way from

£248

Popular in

December

Cheapest in

May

Average price

£520

Good round-trip deal

£425 or less

Good one-way deal

£237 or less
Air Transat
  • Air Transat
  • 23/10-27/10
  • 2 total stops
  • 31h 26m total
  • Montreal to London
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23/7
  • 23/7
  • 2 total stops
  • 22h 15m total
  • Montreal to London
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Highest demand for flights based on searches. 6% potential increase in price (£26 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Montreal (YMQ) to London (LON).
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Price to beat on a one-way flight from Montreal (YMQ) to London (LON).
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Find flight deals from Montreal to London

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 13 6月 2025.

週二 9/916:30YUL - LGW
2 stops23h 10mMultiple Airlines
週二 16/909:50LGW - YUL
2 stops33h 00mMultiple Airlines
Deal found 11/6£383
週一 1/922:05YUL - LGW
Nonstop6h 45mPorter Airlines
週六 13/911:35LGW - YUL
Nonstop7h 40mPorter Airlines
Deal found 12/6£383
週一 8/921:55YUL - LHR
Nonstop6h 40mAir Canada
週一 15/912:40LHR - YUL
1 stop13h 13mAir Canada
Deal found 13/6£383
週六 1/1110:00YUL - LGW
1 stop19h 45mAir Transat
週六 8/1111:40LGW - YUL
1 stop26h 20mAir Transat
Deal found 11/6£388
週三 3/921:55YUL - LHR
Nonstop6h 40mMultiple Airlines
週日 14/906:50LHR - YUL
1 stop9h 45mMultiple Airlines
Deal found 12/6£399
週三 3/921:55YUL - LHR
Nonstop6h 40mLufthansa
週三 1/1009:30LHR - YUL
Nonstop7h 10mLufthansa
Deal found 11/6£406
週一 8/917:50YUL - STN
2 stops15h 30mMultiple Airlines
週一 15/908:15STN - YUL
2 stops18h 02mMultiple Airlines
Deal found 12/6£412
週一 8/917:50YUL - LTN
2 stops17h 10mMultiple Airlines
週一 15/909:00LTN - YUL
2 stops17h 17mMultiple Airlines
Deal found 12/6£412
週五 26/922:00YUL - LHR
Nonstop6h 40mBritish Airways
週六 11/1018:05LHR - YUL
Nonstop7h 10mBritish Airways
Deal found 12/6£439
週六 6/915:41YUL - LHR
2 stops13h 59mUnited Airlines
週六 20/909:30LHR - YUL
1 stop11h 40mUnited Airlines
Deal found 11/6£444
週五 10/1022:00YUL - LHR
Nonstop6h 40mAmerican Airlines
週三 15/1018:05LHR - YUL
Nonstop7h 10mAmerican Airlines
Deal found 11/6£454
週六 25/1021:50YUL - LHR
Nonstop6h 50mFinnair
週一 10/1116:30LHR - YUL
Nonstop7h 35mFinnair
Deal found 11/6£455

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 13 6月 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

週四 23/10

15:10-10:45

1 stop14h 35m

London Gatwick

週一 27/10

11:40-00:31

1 stop16h 51m

£380

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

週一 1/9

22:05-09:50

Nonstop6h 45m

London Gatwick

週六 13/9

11:35-14:15

Nonstop7h 40m

£383

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

週三 3/9

21:55-09:35

Nonstop6h 40m

London Heathrow

週三 24/9

08:40-15:00

1 stop11h 20m

£390

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

週三 1/10

21:55-09:35

Nonstop6h 40m

London Heathrow

週日 5/10

09:30-11:40

Nonstop7h 10m

£406

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

週三 10/9

21:55-09:35

Nonstop6h 40m

London Heathrow

週六 20/9

11:05-11:35

1 stop29h 30m

£407

MontrealLondon

YUL - STN

YULSTN

Montreal Pierre Elliott Trudeau Intl

週一 8/9

17:50-14:20

2 stops15h 30m

London Stansted

週一 15/9

08:15-21:17

2 stops18h 02m

£412

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

週一 8/9

17:50-16:00

2 stops17h 10m

London Luton

週一 15/9

09:00-21:17

2 stops17h 17m

£412

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

週四 23/10

22:05-09:45

Nonstop6h 40m

London Heathrow

週一 27/10

16:30-20:05

Nonstop7h 35m

£438

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

週六 6/9

14:00-10:10

2 stops15h 10m

London Heathrow

週三 24/9

09:30-19:45

2 stops15h 15m

£444

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

週五 26/9

22:00-09:40

Nonstop6h 40m

London Heathrow

週五 10/10

18:05-20:15

Nonstop7h 10m

£454

Flights are sorted by cheapest return flights first.

Deals found on 11/6

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 9 June 2025.

The best time to book flights from Montreal to London is 41 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, January is the cheapest month in which you can book a flight from Montreal to London (average of £112). Flying from Montreal to London in August is currently the most expensive (average of £164). 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 13 6月 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 17% on flights from Montreal to London by exploring options for tickets at midday.

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 13 6月 2025.

The most flights from YMQ to LON are scheduled on a Friday (20 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 13 6月 2025.
See what other customers who have flown with Delta, Porter Airlines and KLM from Montreal to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,946 reviews
Check prices

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,946 reviews
Delta
8.0
Very Good
7,946 reviews
Check prices

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Porter Airlines
8.0
Very Good
288 reviews
Delta
8.0
Very Good
7,946 reviews
Check prices

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very Good
7,946 reviews
Check prices

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Transat
7.8
Good
396 reviews
Delta
8.0
Very Good
7,946 reviews
Check prices

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Azores Airlines
7.6
Good
66 reviews
Delta
8.0
Very Good
7,946 reviews
Check prices

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

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

    Flying on Air Transat is currently your cheapest option to London, with prices starting at £380. Additional return tickets that might be worth considering are offered by Porter Airlines and Air Canada, with the lowest prices starting at £383 and £390, respectively. You may be able to fly from Montreal to London for 27% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Montreal to London one-way?

    The cheapet airlines for a one-way flight from Montreal to London are Air Transat (£249), TAP AIR PORTUGAL (£250), and WestJet (£266).

  • 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 American Airlines (88%), Aer Lingus (88%) and Finnair (88%).

  • What are the cheapest flights from Montreal to London?

    On average you can expect to pay £712 for a flight from Montreal to London. The cheapest flight overall is £172 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow) is currently priced at £272.

  • 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, January is the cheapest month in which you can book a flight from Montreal to London (average of £112). Flying from Montreal to London in August is currently the most expensive (average of £164). 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 Montreal?

Book flights to Montreal if you plan to visit one of these locations
Deal
Hounslow
Croydon
Milton Keynes
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Southend-on-Sea
Watford
Hayes
Ipswich
Winchester
Folkestone
Maidstone
Dartford
Guildford

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Montreal to London

Discover the top 4 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 13 6月 2025.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapest£380Average£560FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air CanadaCheapest£399Average£507FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£409Average£654FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£588Average£615FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

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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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