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Cheap flights from Montreal to London from £223

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 16/11. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — LON
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Montreal to London are usually found in May or October, booked 88 days in advance, depart on a Sunday or Wednesday and return on a Wednesday

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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 31 October 2025.

Mon 24/1110:35YUL - LGW
1 stop18h 10mPorter Airlines
Tue 9/1211:40LGW - YUL
1 stop11h 45mPorter Airlines
Deal found 30/10£419
Fri 5/1221:45YUL - LHR
1 stop14h 45mTAP AIR PORTUGAL
Sun 14/1216:30LHR - YUL
1 stop32h 45mTAP AIR PORTUGAL
Deal found 30/10£423
Sun 23/1121:45YUL - LGW
2 stops17h 50mTAP AIR PORTUGAL
Wed 3/1210:40LGW - YUL
1 stop14h 35mTAP AIR PORTUGAL
Deal found 29/10£424
Mon 24/1117:25YUL - LGW
1 stop11h 20mPorter Airlines
Mon 8/1211:40LGW - YUL
1 stop15h 45mPorter Airlines
Deal found 30/10£425
Thu 13/1113:15YUL - LHR
1 stop26h 20mAir Canada
Wed 19/1109:00LHR - YUL
1 stop11h 10mAir Canada
Deal found 29/10£426
Wed 26/1121:45YUL - STN
1 stop15h 25mMultiple Airlines
Wed 3/1206:30STN - YUL
1 stop18h 45mMultiple Airlines
Deal found 30/10£427
Thu 27/1113:15YUL - LHR
1 stop26h 20mMultiple Airlines
Tue 2/1218:40LHR - YUL
1 stop25h 30mMultiple Airlines
Deal found 30/10£427
Wed 19/1114:30YUL - LGW
1 stop14h 15mPorter Airlines
Mon 24/1111:40LGW - YUL
1 stop15h 40mPorter Airlines
Deal found 29/10£428
Mon 1/1206:45YUL - LGW
1 stop22h 00mPorter Airlines
Wed 3/1211:40LGW - YUL
1 stop11h 45mPorter Airlines
Deal found 28/10£429
Wed 26/1120:10YUL - LTN
1 stop13h 50mMultiple Airlines
Wed 3/1214:40LTN - YUL
1 stop27h 00mMultiple Airlines
Deal found 29/10£429
Tue 25/1117:25YUL - LGW
1 stop11h 20mPorter Airlines
Wed 3/1211:40LGW - YUL
1 stop11h 45mPorter Airlines
Deal found 30/10£430
Fri 28/1114:30YUL - LGW
1 stop14h 15mAir Transat
Sat 6/1211:40LGW - YUL
1 stop11h 45mAir Transat
Deal found 29/10£430

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 31 October 2025.

Round-trip from

£419

One-way from

£223

Popular in

December

Cheapest in

May

Average price

£476

Good round-trip deal

£499 or less

Good one-way deal

£233 or less
Porter Airlines
  • Porter Airlines
  • 24/11-26/11
  • 2 total stops
  • 33h 50m total
  • Montreal to London
Search Deals
16/11
  • 16/11
  • 1 total stop
  • 11h 45m total
  • Montreal to London
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£30 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 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 31 October 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

Tue 3/3

10:15-09:45

1 stop18h 30m

London Gatwick

Wed 11/3

11:40-20:55

1 stop13h 15m

£419

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Mon 24/11

10:35-09:45

1 stop18h 10m

London Gatwick

Tue 9/12

11:40-18:25

1 stop11h 45m

£419

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Tue 3/3

10:15-09:45

1 stop18h 30m

London Gatwick

Tue 10/3

11:40-16:55

1 stop33h 15m

£419

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Wed 19/11

14:30-09:45

1 stop14h 15m

London Gatwick

Mon 24/11

11:40-22:20

1 stop15h 40m

£428

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Mon 2/3

10:15-09:45

1 stop18h 30m

London Gatwick

Wed 11/3

11:40-00:35

1 stop16h 55m

£430

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Fri 30/1

17:25-09:45

1 stop11h 20m

London Gatwick

Sun 15/3

11:40-09:20

1 stop25h 40m

£431

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Mon 12/1

14:30-09:45

1 stop14h 15m

London Gatwick

Sun 18/1

11:40-00:35

1 stop17h 55m

£434

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Mon 1/12

17:25-09:45

1 stop11h 20m

London Gatwick

Sun 7/12

11:40-18:25

1 stop11h 45m

£434

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Wed 3/12

14:30-09:45

1 stop14h 15m

London Gatwick

Fri 5/12

11:40-18:25

1 stop11h 45m

£434

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

Thu 8/1

20:10-21:50

1 stop20h 40m

London Luton

Wed 14/1

14:40-12:40

1 stop27h 00m

£435

Flights are sorted by cheapest return flights first.

Deals found on 29/10

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 24 October 2025.

The best time to book flights from Montreal to London is 88 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 £261). Flying from Montreal to London in July is currently the most expensive (average of £489). 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 31 October 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.

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 68% 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 £441.

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.

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 31 October 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
384 reviews
Check prices

Comfort

8.0

Entertainment

7.0

Food

7.6

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sept 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
8.0
Very Good
384 reviews
Porter Airlines
8.0
Very Good
384 reviews
Check prices

Comfort

8.0

Entertainment

7.0

Food

7.6

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sept 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Transat
7.8
Good
469 reviews
Porter Airlines
8.0
Very Good
384 reviews
Check prices

Comfort

8.0

Entertainment

7.0

Food

7.6

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sept 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,385 reviews
Porter Airlines
8.0
Very Good
384 reviews
Check prices

Comfort

8.0

Entertainment

7.0

Food

7.6

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sept 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
British Airways
6.7
Okay
7,489 reviews
Porter Airlines
8.0
Very Good
384 reviews
Check prices

Comfort

8.0

Entertainment

7.0

Food

7.6

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sept 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

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 7h. Fly via Porter Airlines, Lufthansa, or SWISS to get the fastest option. Montreal and London are separated by a distance of 3239 mi. This flight may include one or multiple stops.

  • 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 £393. Additional return tickets that might be worth considering are offered by Air Canada and British Airways, with the lowest prices starting at £406 and £418, respectively. You may be able to fly from Montreal to London for 26% 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 Aegean Airlines (77%), Thai Airways (77%) and Air Canada (72%).

  • What are the cheapest flights from Montreal to London?

    On average you can expect to pay £932 for a flight from Montreal to London. The cheapest flight overall is £402 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow) is currently priced at £381.

  • 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 £261). Flying from Montreal to London in July is currently the most expensive (average of £489). 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 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 31 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapest£393Average£578FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air CanadaCheapest£406Average£506FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£418Average£784FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£557Average£615FlexibilityNo cancel feeOn-time71%
Search American Airlines 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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