How long is the flight from Montreal to London?

There are many flights that can get you from Montreal to London in 6h 40m. Fly via Air Transat, Lufthansa, or British Airways 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 £382. Additional return tickets that might be worth considering are offered by Air Canada and British Airways, with the lowest prices starting at £392 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 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 afternoons when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

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 City or Montreal Pierre Elliott Trudeau Intl - London Gatwick as they are the most popular.

What are the cheapest flights from Montreal to London?

On average you can expect to pay £774 for a flight from Montreal to London. The cheapest flight overall is £379 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow) is currently priced at £357.

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 (70%), Aer Lingus (70%) and Finnair (70%).

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 35 days in advance, which can save you up to 26% on flights from Montreal to London compared to booking the week you need them. Waiting 35 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 £484. For sooner than that we have options available in the next 3 days from £645.

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

Our data shows that May tends to be the cheapest month to fly to London from Montreal. Users have commonly found prices around £517 for the month, but tickets can be as low as £360. 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.

£190+ Flights from Montreal to London

Q: How much does it cost for a return flight from Montreal to London?

Airfare is below average for this route at the moment. Montreal to London flights typically cost between £412 and £537 in January. The cheapest return flight price found within the last 3 days was £391 on Air Transat (10 Jan-15 Feb).

Cheapflights Tip: The best prices from Montreal to London are usually found in May or October, booked 34 days in advance, depart on a Sunday or Wednesday and return on a Wednesday

Cheap flight deals from Montreal to London

Round-trip from	£391
One-way from	£190
Popular in	December
Cheapest in	May
Average price	£463
Good round-trip deal	£456 or less
Good one-way deal	£537 or less

Air Transat
10/1-15/2
2 total stops
25h 35m total
Montreal to London

Search Deals

15/10
1 total stop
18h 45m total
Montreal to London

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (£27 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 September 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 12 September 2025.

Sat 4/1022:05YUL - LGW

Nonstop6h 45mAir Transat

Sun 12/1012:40LGW - YUL

1 stop13h 50mAir Transat

Deal found 10/9£392

Sun 26/1006:45YUL - LGW

1 stop23h 00mAir Transat

Sun 2/1111:40LGW - YUL

1 stop15h 30mAir Transat

Deal found 11/9£393

Mon 10/1106:45YUL - LGW

1 stop22h 00mAir Transat

Fri 21/1111:40LGW - YUL

1 stop11h 45mAir Transat

Deal found 10/9£394

Thu 2/1016:00YUL - LGW

1 stop13h 45mAir Transat

Sun 7/1211:40LGW - YUL

1 stop12h 45mAir Transat

Deal found 11/9£394

Thu 2/1015:10YUL - LGW

1 stop14h 35mAir Transat

Thu 9/1011:35LGW - YUL

Nonstop7h 40mAir Transat

Deal found 11/9£395

Tue 16/918:55YUL - LHR

Nonstop6h 35mAir Canada

Sun 21/906:50LHR - YUL

1 stop9h 45mAir Canada

Deal found 11/9£396

Thu 23/1022:05YUL - LGW

Nonstop6h 45mAir Transat

Sat 1/1111:40LGW - YUL

1 stop14h 30mAir Transat

Deal found 11/9£397

Sun 23/1121:45YUL - LHR

1 stop18h 50mTAP AIR PORTUGAL

Tue 9/1218:30LHR - YUL

1 stop30h 45mTAP AIR PORTUGAL

Deal found 10/9£397

Thu 6/1114:30YUL - LGW

1 stop14h 15mAir Transat

Sun 16/1111:40LGW - YUL

1 stop11h 45mAir Transat

Deal found 11/9£399

Sun 19/1006:45YUL - LGW

1 stop23h 00mAir Transat

Sun 2/1111:40LGW - YUL

1 stop17h 55mAir Transat

Deal found 11/9£399

Sun 26/1021:45YUL - LHR

1 stop18h 50mAir Canada

Sun 2/1105:50LHR - YUL

1 stop9h 55mAir Canada

Deal found 11/9£399

Mon 29/922:05YUL - LGW

Nonstop6h 45mAir Transat

Mon 1/1211:40LGW - YUL

1 stop15h 30mAir Transat

Deal found 11/9£400

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 12 September 2025.

Sat 31/117:25YUL - LGW

1 stop11h 20mAir Transat

Sun 15/211:40LGW - YUL

1 stop18h 10mAir Transat

Deal found 10/9£393

Wed 26/1120:15YUL - LTN

1 stop21h 15mMultiple Airlines

Sun 7/1216:30LTN - YUL

1 stop24h 45mMultiple Airlines

Deal found 10/9£405

Tue 30/921:55YUL - LHR

Nonstop6h 40mLufthansa

Mon 1/1208:45LHR - YUL

1 stop14h 35mLufthansa

Deal found 11/9£419

Mon 29/922:10YUL - LHR

Nonstop6h 40mBritish Airways

Mon 1/1216:10LHR - YUL

Nonstop7h 35mBritish Airways

Deal found 11/9£433

Wed 8/1018:50YUL - LHR

1 stop10h 55mDelta

Wed 22/1006:30LHR - YUL

1 stop15h 25mDelta

Deal found 11/9£449

Tue 23/913:15YUL - LHR

1 stop11h 40mUnited Airlines

Tue 30/906:50LHR - YUL

2 stops17h 55mUnited Airlines

Deal found 10/9£461

Tue 21/1018:50YUL - LCY

1 stop9h 40mKLM

Wed 29/1009:20LCY - YUL

1 stop13h 00mKLM

Deal found 11/9£486

Tue 21/1018:50YUL - LCY

1 stop17h 30mVirgin Atlantic

Thu 30/1017:50LCY - YUL

1 stop28h 30mVirgin Atlantic

Deal found 11/9£487

Sat 10/115:55YUL - LGW

1 stop12h 50mAir Transat

Wed 11/211:40LGW - YUL

1 stop11h 45mAir Transat

Deal found 9/9£394

Thu 16/1015:10YUL - STN

2 stops19h 35mMultiple Airlines

Tue 21/1007:10STN - YUL

1 stop32h 00mMultiple Airlines

Deal found 10/9£430

Wed 1/1021:55YUL - LHR

Nonstop6h 40mLufthansa

Wed 8/1009:30LHR - YUL

Nonstop7h 10mLufthansa

Deal found 9/9£431

Mon 29/922:10YUL - LHR

Nonstop6h 40mBritish Airways

Tue 7/1018:05LHR - YUL

Nonstop7h 10mBritish Airways

Deal found 9/9£433

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 12 September 2025.

Mon 29/922:05YUL - LGW

Nonstop6h 45mAir Transat

Fri 10/1011:35LGW - YUL

Nonstop7h 40mAir Transat

Deal found 11/9£403

Mon 29/922:05YUL - LGW

Nonstop6h 45mAir Transat

Thu 9/1011:35LGW - YUL

Nonstop7h 40mAir Transat

Deal found 9/9£404

Wed 19/1119:10YUL - LHR

Nonstop7h 00mAir Canada

Fri 28/1113:25LHR - YUL

Nonstop7h 45mAir Canada

Deal found 10/9£408

Sat 11/1022:05YUL - LGW

Nonstop6h 45mAir Transat

Fri 24/1011:35LGW - YUL

Nonstop7h 40mAir Transat

Deal found 10/9£419

Wed 8/1022:05YUL - LGW

Nonstop6h 45mPorter Airlines

Tue 14/1011:35LGW - YUL

Nonstop7h 40mPorter Airlines

Deal found 10/9£425

Sat 27/922:05YUL - LGW

Nonstop6h 45mAir Transat

Thu 9/1011:35LGW - YUL

Nonstop7h 40mAir Transat

Deal found 11/9£427

Mon 10/1120:40YUL - LHR

Nonstop6h 50mBritish Airways

Wed 19/1116:10LHR - YUL

Nonstop7h 35mBritish Airways

Deal found 11/9£427

Wed 14/119:30YUL - LHR

Nonstop6h 40mAir Canada

Tue 20/113:25LHR - YUL

Nonstop7h 45mAir Canada

Deal found 10/9£429

Wed 1/1018:55YUL - LHR

Nonstop6h 35mMultiple Airlines

Wed 22/1014:05LHR - YUL

Nonstop7h 10mMultiple Airlines

Deal found 10/9£430

Wed 8/1018:55YUL - LHR

Nonstop6h 35mAir Canada

Tue 14/1009:30LHR - YUL

Nonstop7h 10mAir Canada

Deal found 10/9£430

Tue 14/1018:55YUL - LHR

Nonstop6h 35mAir Canada

Wed 22/1009:30LHR - YUL

Nonstop7h 10mAir Canada

Deal found 10/9£431

Mon 29/922:10YUL - LHR

Nonstop6h 40mBritish Airways

Wed 12/1116:10LHR - YUL

Nonstop7h 35mBritish Airways

Deal found 11/9£433

Last-minute flights from Montreal to London
Discover last-minute flight deals from Montreal to London. Data last updated 12 September 2025 and is based on user searches.

Tue 16/918:55YUL - LHR

Nonstop6h 35mAir Canada

Sun 21/906:50LHR - YUL

1 stop9h 45mAir Canada

Deal found 11/9£396

Tue 16/921:55YUL - LHR

Nonstop6h 40mAir Canada

Thu 25/909:30LHR - YUL

Nonstop7h 10mAir Canada

Deal found 11/9£407

Tue 16/918:55YUL - LHR

Nonstop6h 35mAir Canada

Tue 23/908:45LHR - YUL

1 stop11h 15mAir Canada

Deal found 11/9£416

Tue 16/923:45YUL - STN

1 stop17h 00mMultiple Airlines

Tue 23/907:15STN - YUL

1 stop15h 05mMultiple Airlines

Deal found 11/9£441

Wed 17/918:55YUL - LHR

Nonstop6h 35mAir Canada

Fri 26/909:30LHR - YUL

Nonstop7h 10mAir Canada

Deal found 11/9£405

Wed 17/920:40YUL - STN

1 stop11h 05mMultiple Airlines

Thu 25/906:55STN - YUL

2 stops15h 25mMultiple Airlines

Deal found 10/9£410

Wed 17/922:05YUL - LGW

Nonstop6h 45mAir Transat

Thu 25/912:40LGW - YUL

1 stop11h 40mAir Transat

Deal found 10/9£437

Thu 18/906:45YUL - LGW

2 stops21h 40mMultiple Airlines

Thu 25/912:40LGW - YUL

1 stop11h 40mMultiple Airlines

Deal found 11/9£428

Fri 19/922:05YUL - LGW

Nonstop6h 45mAir Transat

Fri 10/1011:35LGW - YUL

Nonstop7h 40mAir Transat

Deal found 9/9£425

Sun 21/922:05YUL - LGW

Nonstop6h 45mAir Transat

Wed 1/1012:40LGW - YUL

1 stop11h 40mAir Transat

Deal found 11/9£422

Sun 21/923:00YUL - LGW

1 stop14h 40mMultiple Airlines

Wed 1/1007:40LGW - YUL

1 stop18h 20mMultiple Airlines

Deal found 11/9£433

Sun 21/922:05YUL - LGW

Nonstop6h 45mAir Transat

Fri 3/1011:35LGW - YUL

Nonstop7h 40mAir Transat

Deal found 9/9£439

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 12 September 2025.

Wed 15/1006:35YUL - LGW

1 stop18h 45mMultiple Airlines

Deal found 10/9£190

Sat 4/1006:35YUL - LGW

1 stop18h 45mMultiple Airlines

Deal found 10/9£192

Mon 20/1006:55YUL - LGW

2 stops18h 25mMultiple Airlines

Deal found 9/9£193

Wed 15/1022:45YUL - LHR

1 stop14h 00mTAP AIR PORTUGAL

Deal found 11/9£194

Tue 7/1020:15YUL - LGW

3 stops17h 55mMultiple Airlines

Deal found 10/9£195

Mon 29/922:45YUL - LHR

1 stop19h 10mTAP AIR PORTUGAL

Deal found 11/9£195

Fri 17/1020:15YUL - STN

3 stops17h 10mMultiple Airlines

Deal found 10/9£196

Thu 2/1006:45YUL - LGW

2 stops22h 15mMultiple Airlines

Deal found 10/9£197

Mon 20/1006:45YUL - STN

2 stops26h 35mMultiple Airlines

Deal found 9/9£199

Mon 29/923:00YUL - LGW

1 stop15h 10mMultiple Airlines

Deal found 9/9£199

Mon 20/1006:45YUL - LTN

2 stops33h 40mMultiple Airlines

Deal found 9/9£199

Wed 15/1022:45YUL - LGW

1 stop30h 00mTAP AIR PORTUGAL

Deal found 11/9£199

Fly from

Fly to

Route

Depart

Return

Price

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Sat 31/1

17:25-09:45

1 stop11h 20m

London Gatwick

Sun 15/2

11:40-00:50

1 stop18h 10m

£393

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Sat 10/1

15:55-09:45

1 stop12h 50m

London Gatwick

Wed 11/2

11:40-18:25

1 stop11h 45m

£394

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Tue 13/1

06:45-09:45

1 stop22h 00m

London Gatwick

Sun 15/2

11:40-18:25

1 stop11h 45m

£394

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Tue 13/1

06:45-09:45

1 stop22h 00m

London Gatwick

Mon 16/2

11:40-18:25

1 stop11h 45m

£394

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Tue 13/1

06:45-09:45

1 stop22h 00m

London Gatwick

Fri 13/2

11:40-18:25

1 stop11h 45m

£394

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Thu 8/1

14:30-09:45

1 stop14h 15m

London Gatwick

Wed 11/2

11:40-18:25

1 stop11h 45m

£394

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Thu 2/10

16:00-10:45

1 stop13h 45m

London Gatwick

Sat 29/11

11:40-18:25

1 stop11h 45m

£405

MontrealLondon

YUL - LTN

YULLTN

Montreal Pierre Elliott Trudeau Intl

Wed 26/11

20:15-22:30

1 stop21h 15m

London Luton

Sun 7/12

16:30-12:15

1 stop24h 45m

£405

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 30/9

21:55-09:35

Nonstop6h 40m

London Heathrow

Mon 1/12

08:45-18:20

1 stop14h 35m

£419

MontrealLondon

YUL - STN

YULSTN

Montreal Pierre Elliott Trudeau Intl

Thu 16/10

15:10-15:45

2 stops19h 35m

London Stansted

Tue 21/10

07:10-10:10

1 stop32h 00m

£430

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 60 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 34 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 morning, when flights are generally more expensive, you can save up to 16% on flights from Montreal to London by exploring options for tickets at midday.

Weekly flight availability from Montreal to London

The most flights from YMQ to LON are scheduled on a Wednesday (19 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (14 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?

Toronto (YYZ) – chosen by Cheapflights users on 66% of one-stop itineraries from Montreal to London on Cheapflights.

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

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £344.

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

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?

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 05m.

Reviews of airlines servicing London

Read reviews from past customers who have flown with Porter Airlines, Air Transat, andAmerican Airlines 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

7.9

Good

363 reviews

Check prices

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

7.9

Good

363 reviews

Porter Airlines

7.9

Good

363 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Sept 2025

YYZ - OPO

Air Transat

7.7

Good

438 reviews

Porter Airlines

7.9

Good

363 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Sept 2025

YYZ - OPO

American Airlines

7.2

Good

10,000 reviews

Porter Airlines

7.9

Good

363 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Sept 2025

YYZ - OPO

Air Canada

7.1

Good

10,000 reviews

Porter Airlines

7.9

Good

363 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Sept 2025

YYZ - OPO

British Airways

6.7

Okay

7,361 reviews

Porter Airlines

7.9

Good

363 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Sept 2025

YYZ - OPO

Related info for your journey

How long is the flight from Montreal to London?
There are many flights that can get you from Montreal to London in 6h 40m. Fly via Air Transat, Lufthansa, or British Airways 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 £382. Additional return tickets that might be worth considering are offered by Air Canada and British Airways, with the lowest prices starting at £392 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 City or Montreal Pierre Elliott Trudeau Intl - London Gatwick 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 (70%), Aer Lingus (70%) and Finnair (70%).
What are the cheapest flights from Montreal to London?
On average you can expect to pay £774 for a flight from Montreal to London. The cheapest flight overall is £379 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow) is currently priced at £357.
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

Milton Keynes

Croydon

Hounslow

Gatwick

Slough

Luton

Deal

Wembley

Ilford

Crawley

Hayes

Watford

Folkestone

Winchester

Chichester

Ipswich

Dartford

Eastbourne

Guildford

Bishop's Stortford

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Montreal to London

Airline	Cheapest	Average	Flexibility	On-time
Air Transat	Cheapest£382	Average£562	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Air Canada	Cheapest£392	Average£492	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
British Airways	Cheapest£418	Average£722	FlexibilityNo cancel fee	On-time70%	Search British Airways 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 £190

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 15/10. 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 May or October, booked 34 days in advance, depart on a Sunday or Wednesday 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 12 September 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 12 September 2025.

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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 29 August 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 12 September 2025.

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 12 September 2025.

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.

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.

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.

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.

Reviews of airlines servicing London

Read reviews from past customers who have flown with Porter Airlines, Air Transat, andAmerican Airlines 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.

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?

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

What are the most popular routes from Montreal to London?

What are the most reliable airlines from Montreal to London?

What are the cheapest flights from Montreal to London?

Can I find deals for flights from Montreal to London that include hotel bookings?

How can I find direct flights from Montreal to London?

Can I find deals for business class flights from Montreal to London?

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

Travelling to a place near London?

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Alternative routes for Montreal to London

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 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 12 September 2025.