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

Flying on Porter Airlines is currently your cheapest option to London, with prices starting at £434. Additional return tickets that might be worth considering are offered by British Airways and Air Transat, with the lowest prices starting at £434 and £435, 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 cheapest airlines to fly from Montreal to London one-way?

The cheapet airlines for a one-way flight from Montreal to London are WestJet (£232), TAP AIR PORTUGAL (£232), and Air Transat (£262).

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

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

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 cheapest flights from Montreal to London?

On average you can expect to pay £1,008 for a flight from Montreal to London. The cheapest flight overall is £467 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow) is currently priced at £440.

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 (64%), American Airlines (62%) and Aer Lingus (62%).

What are the most popular airlines that fly from Montreal to London?

When booking a flight from Montreal to London, you may want to consider flying on Air Canada, Finnair or British Airways as they are the most popular for this route.

What is the cheapest day to fly round-trip from Montreal to London?

Flying to your destination on a Friday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to London. Check prices with Cheapflights to find a great deal for your trip.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 13% on flights from Montreal to London compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £539. For sooner than that we have options available in the next 3 days from £689.

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

Our data shows that September tends to be the cheapest month to fly to London from Montreal. Users have commonly found prices around £559 for the month, but tickets can be as low as £402. Due to multiple factors, prepare for potentially higher prices in December.

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.

£232+ Flights from Montreal to London

Cheapflights Tip: The best prices from Montreal to London are usually found in September or October, booked 60 days in advance, depart on a Sunday or Tuesday and return on a Wednesday

Cheap flight deals from Montreal to London

Round-trip from	£434
One-way from	£232
Popular in	December
Cheapest in	September
Average price	£537
Good round-trip deal	£519 or less
Good one-way deal	£289 or less

Porter Airlines
14/5-23/5
2 total stops
36h 42m total
Montreal to London

Search Deals

WestJet
2/6
2 total stops
21h 40m total
Montreal to London

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (£19 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).

Search Deals

Average for round-trip flights in March 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

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 26 March 2025.

Sat 24/517:40YUL - LGW

1 stop12h 05mAir Transat

Sat 31/511:35LGW - YUL

Nonstop7h 40mAir Transat

Deal found 25/3£434

Thu 1/522:05YUL - LHR

Nonstop6h 40mAmerican Airlines

Sat 17/518:05LHR - YUL

Nonstop7h 10mAmerican Airlines

Deal found 25/3£434

Tue 29/422:10YUL - LHR

Nonstop6h 40mBritish Airways

Thu 8/518:05LHR - YUL

Nonstop7h 10mBritish Airways

Deal found 25/3£435

Fri 9/518:55YUL - LHR

Nonstop6h 35mAir Canada

Fri 16/506:00LHR - YUL

1 stop14h 00mAir Canada

Deal found 25/3£438

Thu 19/622:05YUL - LGW

Nonstop6h 45mPorter Airlines

Thu 26/611:35LGW - YUL

Nonstop7h 40mPorter Airlines

Deal found 25/3£444

Tue 22/418:55YUL - LHR

Nonstop6h 35mMultiple Airlines

Tue 29/406:00LHR - YUL

1 stop14h 00mMultiple Airlines

Deal found 25/3£447

Wed 21/521:30YUL - SEN

1 stop18h 20mMultiple Airlines

Thu 12/617:40SEN - YUL

1 stop22h 55mMultiple Airlines

Deal found 25/3£448

Sun 13/418:55YUL - LHR

Nonstop6h 35mLufthansa

Sat 19/407:25LHR - YUL

1 stop16h 25mLufthansa

Deal found 26/3£451

Sun 4/523:00YUL - LGW

1 stop27h 00mMultiple Airlines

Thu 8/519:40LGW - YUL

1 stop30h 20mMultiple Airlines

Deal found 24/3£454

Thu 8/516:40YUL - LGW

1 stop20h 10mSWISS

Fri 16/518:40LGW - YUL

1 stop25h 20mSWISS

Deal found 24/3£455

Wed 21/521:30YUL - LTN

1 stop16h 55mMultiple Airlines

Thu 12/619:30LTN - YUL

1 stop21h 05mMultiple Airlines

Deal found 25/3£461

Tue 8/416:40YUL - LHR

1 stop15h 20mSWISS

Sat 19/406:00LHR - YUL

2 stops18h 21mSWISS

Deal found 25/3£466

Best flights from Montreal to London
Discover carefully curated flight deals from Montreal to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 March 2025.

Wed 14/510:00YUL - LGW

1 stop19h 45mPorter Airlines

Fri 23/512:40LGW - YUL

1 stop16h 57mPorter Airlines

Deal found 25/3£434

Thu 8/522:05YUL - LHR

Nonstop6h 40mBritish Airways

Mon 12/518:05LHR - YUL

Nonstop7h 10mBritish Airways

Deal found 25/3£434

Sat 10/515:10YUL - LGW

1 stop14h 35mAir Transat

Sun 18/511:35LGW - YUL

Nonstop7h 40mAir Transat

Deal found 23/3£435

Mon 9/622:10YUL - LHR

Nonstop6h 40mAmerican Airlines

Mon 23/618:05LHR - YUL

Nonstop7h 10mAmerican Airlines

Deal found 25/3£446

Tue 22/418:55YUL - LHR

Nonstop6h 35mMultiple Airlines

Tue 29/406:00LHR - YUL

1 stop14h 00mMultiple Airlines

Deal found 25/3£447

Wed 21/516:25YUL - LHR

2 stops11h 10mAir Canada

Wed 28/508:40LHR - YUL

1 stop11h 20mAir Canada

Deal found 25/3£449

Wed 30/421:20YUL - LHR

1 stop28h 10mLufthansa

Sat 10/513:45LHR - YUL

1 stop12h 15mLufthansa

Deal found 25/3£451

Thu 8/516:40YUL - LGW

1 stop20h 10mSWISS

Fri 16/518:40LGW - YUL

1 stop25h 20mSWISS

Deal found 24/3£455

Fri 9/507:29YUL - LGW

2 stops22h 11mFinnair

Fri 16/512:20LGW - YUL

2 stops30h 24mFinnair

Deal found 24/3£467

Sat 24/506:05YUL - LHR

1 stop21h 45mDelta

Tue 3/606:30LHR - YUL

1 stop15h 25mDelta

Deal found 24/3£474

Mon 28/418:50YUL - LHR

1 stop14h 00mKLM

Mon 12/511:45LHR - YUL

1 stop10h 10mKLM

Deal found 25/3£487

Thu 22/518:55YUL - LHR

1 stop21h 40mBrussels Airlines

Mon 16/617:50LHR - YUL

2 stops29h 01mBrussels Airlines

Deal found 25/3£489

Direct flights from Montreal to London
Explore direct flight options from Montreal to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 March 2025.

Thu 8/522:05YUL - LHR

Nonstop6h 40mBritish Airways

Mon 12/518:05LHR - YUL

Nonstop7h 10mBritish Airways

Deal found 25/3£434

Thu 19/622:05YUL - LGW

Nonstop6h 45mPorter Airlines

Thu 26/611:35LGW - YUL

Nonstop7h 40mPorter Airlines

Deal found 25/3£436

Thu 22/522:05YUL - LGW

Nonstop6h 45mAir Transat

Sun 1/611:35LGW - YUL

Nonstop7h 40mAir Transat

Deal found 23/3£441

Mon 9/622:10YUL - LHR

Nonstop6h 40mAmerican Airlines

Mon 23/618:05LHR - YUL

Nonstop7h 10mAmerican Airlines

Deal found 25/3£446

Fri 9/518:55YUL - LHR

Nonstop6h 35mAir Canada

Fri 16/514:05LHR - YUL

Nonstop7h 10mAir Canada

Deal found 25/3£447

Mon 7/422:20YUL - LHR

Nonstop6h 40mLufthansa

Sat 12/409:30LHR - YUL

Nonstop7h 10mLufthansa

Deal found 25/3£461

Thu 5/622:05YUL - LHR

Nonstop6h 40mMultiple Airlines

Mon 23/618:05LHR - YUL

Nonstop7h 10mMultiple Airlines

Deal found 25/3£469

Sat 3/522:05YUL - LGW

Nonstop6h 45mMultiple Airlines

Fri 9/511:35LGW - YUL

Nonstop7h 40mMultiple Airlines

Deal found 24/3£545

Thu 18/922:05YUL - LHR

Nonstop6h 40mFinnair

Thu 16/1018:05LHR - YUL

Nonstop7h 10mFinnair

Deal found 24/3£557

Last-minute flights from Montreal to London
Discover last-minute flight deals from Montreal to London. Data last updated 26 March 2025 and is based on user searches.

Sun 30/316:40YUL - LGW

1 stop20h 10mSWISS

Wed 2/418:35LGW - YUL

1 stop25h 25mSWISS

Deal found 25/3£579

Mon 31/306:15YUL - LGW

1 stop22h 45mMultiple Airlines

Tue 22/414:00LGW - YUL

2 stops32h 40mMultiple Airlines

Deal found 24/3£493

Mon 31/317:00YUL - LHR

1 stop15h 45mAir France

Mon 7/419:45LHR - YUL

1 stop21h 20mAir France

Deal found 24/3£505

Mon 31/319:00YUL - LHR

1 stop18h 35mVirgin Atlantic

Mon 7/419:45LHR - YUL

1 stop21h 20mVirgin Atlantic

Deal found 24/3£506

Mon 31/314:15YUL - LHR

1 stop11h 15mMultiple Airlines

Wed 9/406:00LHR - YUL

1 stop14h 00mMultiple Airlines

Deal found 25/3£519

Mon 31/310:00YUL - LGW

1 stop19h 45mAir Transat

Thu 10/412:40LGW - YUL

1 stop33h 35mAir Transat

Deal found 25/3£523

Tue 1/422:20YUL - LHR

Nonstop6h 40mAir Canada

Tue 8/406:00LHR - YUL

1 stop12h 50mAir Canada

Deal found 25/3£448

Tue 1/415:30YUL - LHR

2 stops14h 10mUnited Airlines

Tue 8/408:00LHR - YUL

2 stops15h 00mUnited Airlines

Deal found 25/3£501

Wed 2/422:10YUL - LHR

Nonstop6h 40mAmerican Airlines

Wed 16/418:05LHR - YUL

Nonstop7h 10mAmerican Airlines

Deal found 25/3£461

Wed 2/418:50YUL - LHR

Nonstop6h 40mLufthansa

Sun 20/412:40LHR - YUL

1 stop11h 02mLufthansa

Deal found 25/3£461

Thu 3/422:05YUL - LHR

Nonstop6h 40mBritish Airways

Mon 7/418:05LHR - YUL

Nonstop7h 10mBritish Airways

Deal found 25/3£506

Thu 3/417:23YUL - LHR

1 stop12h 17mDelta

Mon 7/412:25LHR - YUL

1 stop14h 01mDelta

Deal found 25/3£523

One-way flights from Montreal to London
Search for one-way flight options from Montreal to London. Find affordable one-way fares based on user searches. Data last updated 26 March 2025.

Mon 2/606:45YUL - LGW

2 stops21h 40mWestJet

Deal found 24/3£232

Mon 16/622:45YUL - LHR

1 stop19h 10mTAP AIR PORTUGAL

Deal found 25/3£232

Fri 9/523:00YUL - LGW

1 stop15h 30mMultiple Airlines

Deal found 24/3£233

Mon 7/422:45YUL - LGW

1 stop11h 50mTAP AIR PORTUGAL

Deal found 24/3£237

Mon 5/523:00YUL - LTN

1 stop18h 15mMultiple Airlines

Deal found 25/3£242

Tue 27/506:45YUL - STN

3 stops30h 25mMultiple Airlines

Deal found 25/3£243

Fri 13/623:00YUL - LHR

2 stops28h 00mMultiple Airlines

Deal found 25/3£243

Fri 13/623:00YUL - SEN

2 stops19h 00mMultiple Airlines

Deal found 25/3£251

Mon 26/506:45YUL - LCY

2 stops32h 05mMultiple Airlines

Deal found 25/3£254

Fri 30/522:05YUL - LGW

Nonstop6h 45mAir Transat

Deal found 24/3£262

Thu 19/622:05YUL - LGW

Nonstop6h 45mPorter Airlines

Deal found 25/3£264

Mon 31/321:30YUL - LHR

2 stops31h 50mAzores Airlines

Deal found 24/3£329

Cheapflights Fare Finder

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

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Wed 14/5

10:00-10:45

1 stop19h 45m

London Gatwick

Fri 23/5

12:40-00:37

1 stop16h 57m

£434

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Thu 8/5

22:05-09:45

Nonstop6h 40m

London Heathrow

Mon 12/5

18:05-20:15

Nonstop7h 10m

£434

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Sat 10/5

15:10-10:45

1 stop14h 35m

London Gatwick

Sun 18/5

11:35-14:15

Nonstop7h 40m

£435

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 9/6

22:10-09:50

Nonstop6h 40m

London Heathrow

Mon 23/6

18:05-20:15

Nonstop7h 10m

£446

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 22/4

18:55-06:30

Nonstop6h 35m

London Heathrow

Tue 29/4

06:00-15:00

1 stop14h 00m

£447

MontrealLondon

YUL - SEN

YULSEN

Montreal Pierre Elliott Trudeau Intl

Wed 21/5

21:30-20:50

1 stop18h 20m

London Southend

Thu 12/6

17:40-11:35

1 stop22h 55m

£448

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 21/5

16:25-08:35

2 stops11h 10m

London Heathrow

Wed 28/5

08:40-15:00

1 stop11h 20m

£449

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 30/4

21:20-06:30

1 stop28h 10m

London Heathrow

Sat 10/5

13:45-21:00

1 stop12h 15m

£451

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Sun 4/5

23:00-07:00

1 stop27h 00m

London Gatwick

Thu 8/5

19:40-21:00

1 stop30h 20m

£454

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Thu 8/5

16:40-17:50

1 stop20h 10m

London Gatwick

Fri 16/5

18:40-15:00

1 stop25h 20m

£455

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 58 results

...

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?

The best time to book flights from Montreal to London is 60 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?

Unlike in the evening, when flights are generally more expensive, you can save up to 19% on flights from Montreal to London by exploring options for tickets at midday.

Rainfall in London 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

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

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

7,891 reviews

Check prices

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

7,891 reviews

Delta

8.0

Very Good

7,891 reviews

Check prices

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

7.9

Good

276 reviews

Delta

8.0

Very Good

7,891 reviews

Check prices

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

1,318 reviews

Delta

8.0

Very Good

7,891 reviews

Check prices

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

381 reviews

Delta

8.0

Very Good

7,891 reviews

Check prices

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

63 reviews

Delta

8.0

Very Good

7,891 reviews

Check prices

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

What are the cheapest airlines flying from Montreal to London round-trip?
Flying on Porter Airlines is currently your cheapest option to London, with prices starting at £434. Additional return tickets that might be worth considering are offered by British Airways and Air Transat, with the lowest prices starting at £434 and £435, 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 cheapest airlines to fly from Montreal to London one-way?
The cheapet airlines for a one-way flight from Montreal to London are WestJet (£232), TAP AIR PORTUGAL (£232), and Air Transat (£262).
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 (64%), American Airlines (62%) and Aer Lingus (62%).
What are the cheapest flights from Montreal to London?
On average you can expect to pay £1,008 for a flight from Montreal to London. The cheapest flight overall is £467 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow) is currently priced at £440.
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

Hounslow

Deal

Milton Keynes

Gatwick

Croydon

Luton

Slough

Eastbourne

Wembley

Hayes

Ilford

Crawley

Southend-on-Sea

Winchester

Maidstone

Ipswich

Watford

Southall

Dartford

Folkestone

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Montreal to London

Airline	Cheapest	Average	Flexibility	On-time
Air Transat	Cheapest£400	Average£633	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Air Canada	Cheapest£427	Average£548	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
British Airways	Cheapest£429	Average£648	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Finnair	Cheapest£519	Average£645	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Lufthansa	Cheapest£552	Average£647	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

Fly with Cheapflights

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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Cheap flights from Montreal to London from £232

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Montreal to London are usually found in September or October, booked 60 days in advance, depart on a Sunday or Tuesday and return on a Wednesday

Cheap flight deals from Montreal to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Montreal to London

Cheapest flights from Montreal to LondonExplore 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 26 March 2025.

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 26 March 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Montreal to London that are best for you.

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.

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 21 March 2025.

What is the cheapest month to book a flight from Montreal to London?

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 26 March 2025.

Rainfall in London by month

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

Temperature in London by month

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

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 26 March 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.

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.

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Top 5 airlines flying from Montreal to London

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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 26 March 2025.