Cheap flights from Montreal to London from C$ 371

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — LON
19 Oct — 26 Oct1
1 adult
1 adult, Economy

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 Saturday 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 19 September 2025.

Round-trip from

C$ 732

One-way from

C$ 371

Popular in

December

Cheapest in

May

Average price

C$ 900

Good round-trip deal

C$ 781 or less

Good one-way deal

C$ 498 or less
Air Transat
  • Air Transat
  • 7/11-13/11
  • 2 total stops
  • 26h 00m total
  • Montreal to London
12/10
  • 12/10
  • 2 total stops
  • 21h 00m total
  • Montreal to London
Highest demand for flights based on searches. 6% potential increase in price (C$ 90 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease (C$ 38 potential savings vs. average RT price).
Average for round-trip flights in September 2025
Price to beat on a round-trip flight from Montreal (YMQ) to London (LON).
Price to beat on a one-way flight from Montreal (YMQ) to London (LON).

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 19 September 2025.

Fri 7/112:30 p.m.YUL - LGW
1 stop14h 15mAir Transat
Thu 13/1111:40 a.m.LGW - YUL
1 stop11h 45mAir Transat
Deal found 17/9C$ 732
Mon 6/104:00 p.m.YUL - LGW
1 stop13h 45mAir Transat
Fri 10/1011:35 a.m.LGW - YUL
Nonstop7h 40mAir Transat
Deal found 17/9C$ 735
Mon 10/1110:35 a.m.YUL - LGW
1 stop18h 10mAir Transat
Fri 21/1111:40 a.m.LGW - YUL
1 stop11h 45mAir Transat
Deal found 17/9C$ 736
Sun 30/118:15 p.m.YUL - STN
1 stop18h 10mMultiple Airlines
Sat 6/128:25 p.m.STN - YUL
2 stops25h 30mMultiple Airlines
Deal found 17/9C$ 743
Fri 24/105:05 p.m.YUL - LGW
1 stop12h 40mAir Transat
Mon 3/1111:40 a.m.LGW - YUL
1 stop11h 45mAir Transat
Deal found 18/9C$ 745
Thu 23/1010:05 p.m.YUL - LGW
Nonstop6h 45mAir Transat
Tue 4/1111:40 a.m.LGW - YUL
1 stop11h 45mAir Transat
Deal found 18/9C$ 747
Mon 1/128:15 p.m.YUL - STN
1 stop17h 25mMultiple Airlines
Sat 6/128:25 p.m.STN - YUL
2 stops25h 30mMultiple Airlines
Deal found 17/9C$ 749
Tue 11/116:45 a.m.YUL - LGW
1 stop22h 00mAir Transat
Mon 17/1111:40 a.m.LGW - YUL
1 stop17h 55mAir Transat
Deal found 18/9C$ 749
Wed 19/117:10 p.m.YUL - LHR
Nonstop7h 00mAir Canada
Sat 29/116:00 a.m.LHR - YUL
1 stop12h 45mAir Canada
Deal found 18/9C$ 749
Wed 12/112:30 p.m.YUL - LGW
1 stop14h 15mAir Transat
Sat 15/1111:40 a.m.LGW - YUL
1 stop11h 45mAir Transat
Deal found 18/9C$ 750
Wed 5/112:30 p.m.YUL - LGW
1 stop14h 15mAir Transat
Mon 10/1111:40 a.m.LGW - YUL
1 stop11h 45mAir Transat
Deal found 17/9C$ 751
Sat 11/103:10 p.m.YUL - LGW
1 stop14h 35mAir Transat
Thu 23/1012:40 p.m.LGW - YUL
1 stop16h 57mAir Transat
Deal found 18/9C$ 753

Cheapflights Fare Finder

 
Customize 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 629,999 searches. Data last updated 19 September 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

Fri 7/11

2:30 p.m.-9:45 a.m.

1 stop14h 15m

London Gatwick

Thu 13/11

11:40 a.m.-6:25 p.m.

1 stop11h 45m

C$ 732

MontrealLondon

YUL - STN

YULSTN

Montreal Pierre Elliott Trudeau Intl

Thu 6/11

2:00 p.m.-11:35 a.m.

2 stops16h 35m

London Stansted

Sun 9/11

8:00 p.m.-7:22 p.m.

2 stops28h 22m

C$ 754

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Sun 30/11

2:30 p.m.-9:45 a.m.

1 stop14h 15m

London Gatwick

Thu 4/12

11:40 a.m.-6:25 p.m.

1 stop11h 45m

C$ 757

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Sun 9/11

2:30 p.m.-9:45 a.m.

1 stop14h 15m

London Gatwick

Wed 12/11

11:40 a.m.-6:25 p.m.

1 stop11h 45m

C$ 757

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Wed 5/11

2:30 p.m.-9:45 a.m.

1 stop14h 15m

London Gatwick

Sun 9/11

11:40 a.m.-6:25 p.m.

1 stop11h 45m

C$ 757

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Thu 6/11

2:30 p.m.-9:45 a.m.

1 stop14h 15m

London Gatwick

Sun 9/11

11:40 a.m.-6:25 p.m.

1 stop11h 45m

C$ 757

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Sun 9/11

2:30 p.m.-9:45 a.m.

1 stop14h 15m

London Gatwick

Thu 13/11

11:40 a.m.-6:25 p.m.

1 stop11h 45m

C$ 757

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

Sun 23/11

8:15 p.m.-1:40 p.m.

1 stop12h 25m

London Luton

Sun 30/11

7:20 a.m.-12:15 p.m.

1 stop33h 55m

C$ 775

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 7/10

6:55 p.m.-6:30 a.m.

Nonstop6h 35m

London Heathrow

Wed 15/10

2:05 p.m.-4:15 p.m.

Nonstop7h 10m

C$ 809

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 8/10

6:55 p.m.-6:30 a.m.

Nonstop6h 35m

London Heathrow

Wed 15/10

9:30 a.m.-11:40 a.m.

Nonstop7h 10m

C$ 809

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/9

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 round-trip 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 round-trip flight from Montreal to London. Price data was last updated on 12 September 2025.

The price you pay for your flight from Montreal to London may vary depending on when you book. For the best chance of a lower fare, look to book 88 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 C$ 560). Flying from Montreal to London in July is currently the most expensive (average of C$ 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 19 September 2025.

It’s typically best to fly out from Montreal to London at noon. Doing so could potentially save you 34% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Montreal to London?

Use this chart to determine the cheapest time to fly round-trip from Montreal to London. Price data was last updated on 15 September 2024.

Travelers seeking maximum savings on their Montreal to London flight should consider departing on Wednesday at noon when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 19 September 2025.

The most flights from YMQ to LON are scheduled on a Wednesday (20 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (15 on average).

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

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

Toronto (YYZ) – chosen by Cheapflights users on 74% of one-stop itineraries from Montreal to London on Cheapflights.

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

Average round-trip fare for 1-stop flights from Montreal to London, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Lisbon (LIS) is the most affordable 1-stop option, with an average round-trip price of C$ 676.

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

Shortest average travel time for 1-stop one-way flights from Montreal to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Ottawa (YOW) have the shortest average one-way travel time for 1-stop routes: 9h 00m.

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

Average layover duration for 1-stop one-way flights from Montreal to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Newark (EWR) offer the fastest connection on this route, with an average layover time of 1h 20m.

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 19 September 2025.
Read reviews from past customers who have flown 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.

Boarding

8.2

Entertainment

7.0

Food

7.6

Crew

8.6

Comfort

7.9

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 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.

Boarding

8.2

Entertainment

7.0

Food

7.6

Crew

8.6

Comfort

7.9

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 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.

Boarding

8.2

Entertainment

7.0

Food

7.6

Crew

8.6

Comfort

7.9

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 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.

Boarding

8.2

Entertainment

7.0

Food

7.6

Crew

8.6

Comfort

7.9

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 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.

Boarding

8.2

Entertainment

7.0

Food

7.6

Crew

8.6

Comfort

7.9

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 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.

Boarding

8.2

Entertainment

7.0

Food

7.6

Crew

8.6

Comfort

7.9

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 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.

Montreal to London Travel Guide

London Gatwick is an international airport that is outside the central London area. It’s actually about 30 miles from the city centre. This is the second busiest airport in the United Kingdom. Its physical footprint is about 1,670 acres.

The largest and busiest airport in the United Kingdom, and the main airport in London, is London Heathrow. This airport is actually the second busiest airport in the entire world. It’s located only 14 miles from the middle of London.

Generally you’ll find that the stopover times are only a few hours, but there are some that will make your travel time up to double what the direct flights are. You will find that the stopover flights do sometimes cost less than direct flights do for this route, but it varies.

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 airports serve Montreal to London flights?

    You will fly from Pierre Elliott Trudeau International Airport in Montreal to London and land at either London Gatwick or London Heathrow. There are many flight options to choose from so you’ll be able to find a good fit for your trip.

  • Which airlines fly directly from Montreal to London?

    You will be able to find direct flights from Montreal into Heathrow on Air Canada, Lufthansa, American Airlines, Iberia, Finnair, and British Airways. The flight takes 6h 35m. Lufthansa’s flight is handled by Air Canada. American Airlines, Iberia, and Finnair are all handled by British Airways.

  • What are the stopover options between Montreal to London?

    You can fly on WestJet and you’ll stop in Toronto on your way to London Gatwick. Virgin Atlantic has flights to London Heathrow that stop in Amsterdam or at JFK in New York. Other stops include Newark or Paris.

  • Do I need a passport or visa to fly from Montreal to London?

    You will need your passport to visit London. You will not, however, need to get a visa for traveling to London for pleasure. The authority will stamp your passport upon arrival and that will allow you to stay for up to six months. Staying longer than that or traveling for any other reason may require a visa.

  • How long is the flight from Montreal to London?

    A quick flight from Montreal to London can take about 6h 35m. Air Transat provides one of the quickest options available for as low as C$ 809. Montreal and London are separated by a distance of 5213 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Flying on TAP AIR PORTUGAL is currently your cheapest option to London, with prices starting at C$ 602. Additional round-trip tickets that might be worth considering are offered by Air France and Air Transat, with the lowest prices starting at C$ 608 and C$ 631, respectively. TAP AIR PORTUGAL is currently priced 37% below the average price you’ll pay for this route.

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

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

    Before booking your flight to London from Montreal, check out the most reliable airlines to get you to your destination on time: American Airlines (69%), Aer Lingus (69%), Finnair( 69%).

  • What are the cheapest flights from Montreal to London?

    The cheapest flight price from Montreal to London is C$ 398. On average you can expect to pay C$ 1,968. The most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow), can usually be booked for C$ 666.

  • 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 vacation 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 C$ 560). Flying from Montreal to London in July is currently the most expensive (average of C$ 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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Sutton
Hounslow
Slough
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Milton Keynes
Romford
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Browse thousands of different options on Cheapflights for your next trip

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Fly from Montreal to London on these airlines

Choose from the following airlines for your flight from Montreal to London. Flights are based on user searches made on Cheapflights and were last updated on 19 September 2025.

Top 10 airlines flying from Montreal to London

Discover the top 10 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 629,999 searches. Data last updated 19 September 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapestC$ 602AverageC$ 694FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air FranceCheapestC$ 608AverageC$ 957FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air TransatCheapestC$ 631AverageC$ 973FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Porter AirlinesCheapestC$ 716AverageC$ 888FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
LufthansaCheapestC$ 757AverageC$ 997FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapestC$ 758AverageC$ 1,002FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AtlanticCheapestC$ 767AverageC$ 876FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapestC$ 770AverageC$ 1,020FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapestC$ 790AverageC$ 1,096FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapestC$ 802AverageC$ 1,033FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers 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?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Montreal to London. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Montreal to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Montreal to London, users can toggle the no change fees filter when performing a flight search.

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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