£138+ Cheap flights from Montreal

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
YMQ — LHR
15 Jan — 22 Jan1
1 adult
1 adult, Economy, 0 bags

What to know about flights from Montreal

Discover essential information about flights departing from Montreal, including flight schedules, destinations, airlines operating at the Montreal airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 16 December 2025.

Cheapest airline

Porter Airlines

Good round-trip deal

£138 or less

Good one-way deal

£123 or less
On average, Porter Airlines currently has the cheapest one-way flight from Montreal (avg. price of £166).
Price to beat on a round-trip flight from Montreal.
Price to beat on a one-way flight from Montreal.

Find flights from Montreal

Enter your travel dates to find the best prices.

Cheapest flights from Montreal
Explore the most affordable flight options available from Montreal. Find the lowest fares based on data from user searches, with prices last updated on 16 December 2025.

Fri 30/109:15YUL - CUN
1 stop7h 25mUnited Airlines
Fri 6/217:09CUN - YUL
1 stop26h 39mUnited Airlines
Deal found 15/12£247
Thu 29/116:45YUL - CUN
1 stop20h 48mUnited Airlines
Thu 5/217:09CUN - YUL
1 stop26h 39mUnited Airlines
Deal found 15/12£249
Wed 7/116:45YUL - CUN
2 stops20h 49mUnited Airlines
Wed 21/117:55CUN - YUL
2 stops20h 05mUnited Airlines
Deal found 16/12£250
Sun 11/106:45YUL - CUN
2 stops35h 47mWestJet
Fri 16/115:05CUN - YUL
2 stops16h 00mWestJet
Deal found 15/12£255
Wed 31/1216:45YUL - CUN
2 stops20h 09mUnited Airlines
Tue 13/117:55CUN - YUL
2 stops21h 21mUnited Airlines
Deal found 15/12£256
Tue 20/115:00YUL - CUN
2 stops20h 25mUnited Airlines
Tue 3/316:51CUN - YUL
2 stops22h 25mUnited Airlines
Deal found 14/12£259
Fri 16/106:45YUL - CUN
1 stop12h 57mWestJet
Wed 21/116:50CUN - YUL
1 stop7h 53mWestJet
Deal found 15/12£259
Thu 8/106:45YUL - CUN
1 stop13h 37mWestJet
Mon 12/120:40CUN - YUL
1 stop28h 03mWestJet
Deal found 15/12£260
Fri 1/518:30YUL - CUN
2 stops19h 03mUnited Airlines
Fri 8/517:22CUN - YUL
2 stops18h 48mUnited Airlines
Deal found 14/12£261
Sun 29/310:15YUL - CUN
1 stop8h 40mPorter Airlines
Thu 9/416:55CUN - YUL
1 stop6h 40mPorter Airlines
Deal found 13/12£262
Tue 13/106:45YUL - MAN
1 stop19h 25mAir Transat
Sun 18/108:40MAN - YUL
1 stop20h 55mAir Transat
Deal found 15/12£402
Tue 13/121:45YUL - MAN
1 stop20h 20mMultiple Airlines
Sun 18/106:40MAN - YUL
2 stops30h 42mMultiple Airlines
Deal found 15/12£412

Find flights from Montreal within your budget

 
Find flights departing from Montreal that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 16 December 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches

Fly to

Heathrow

Route

Depart

Return

Price

MontrealCancún

YUL - CUN

YULCUN

Montreal Pierre Elliott Trudeau Intl

Mon 26/1

16:45-12:30

1 stop19h 45m

Cancun

Sat 7/2

08:39-21:42

2 stops13h 03m

£249

MontrealCancún

YUL - CUN

YULCUN

Montreal Pierre Elliott Trudeau Intl

Thu 29/1

16:45-13:33

1 stop20h 48m

Cancun

Sat 7/2

17:09-15:16

1 stop22h 07m

£250

MontrealCancún

YUL - CUN

YULCUN

Montreal Pierre Elliott Trudeau Intl

Sat 10/1

07:00-17:50

2 stops10h 50m

Cancun

Tue 13/1

17:09-15:16

1 stop22h 07m

£250

MontrealCancún

YUL - CUN

YULCUN

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

16:45-15:35

1 stop22h 50m

Cancun

Sat 14/2

16:45-14:00

1 stop21h 15m

£250

MontrealCancún

YUL - CUN

YULCUN

Montreal Pierre Elliott Trudeau Intl

Sat 21/2

14:13-16:40

1 stop26h 27m

Cancun

Fri 27/2

17:55-14:00

2 stops20h 05m

£256

MontrealCancún

YUL - CUN

YULCUN

Montreal Pierre Elliott Trudeau Intl

Tue 24/2

15:00-11:25

2 stops20h 25m

Cancun

Tue 24/3

05:30-19:48

2 stops13h 18m

£266

MontrealCancún

YUL - CUN

YULCUN

Montreal Pierre Elliott Trudeau Intl

Sat 10/1

15:00-11:25

2 stops20h 25m

Cancun

Thu 26/2

17:55-13:28

2 stops19h 33m

£276

MontrealCancún

YUL - CUN

YULCUN

Montreal Pierre Elliott Trudeau Intl

Tue 10/2

15:00-11:25

2 stops20h 25m

Cancun

Tue 17/2

17:55-13:28

2 stops19h 33m

£289

MontrealCancún

YUL - CUN

YULCUN

Montreal Pierre Elliott Trudeau Intl

Wed 18/3

14:20-18:10

Nonstop4h 50m

Cancun

Mon 30/3

19:30-00:40

Nonstop4h 10m

£298

MontrealCancún

YUL - CUN

YULCUN

Montreal Pierre Elliott Trudeau Intl

Tue 17/3

14:20-18:10

Nonstop4h 50m

Cancun

Thu 26/3

19:30-00:40

Nonstop4h 10m

£298

Flights are sorted by cheapest return flights first.

Deals found on 15/12

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Montreal

Have a flexible travel schedule? Discover the best time to fly 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.

Travel insights for flights from Montreal

Get recent, data-driven insights about flights from Montreal including ideal travel times, pricing trends, and more.

When is the best time to book a flight from Montreal?

Use this chart to determine the optimal time to book a return flight from Montreal to Heathrow. Price data was last updated on 12 December 2025.

Booking 45 days in advance of your planned departure date is, on average, the best time to get cheap flights from Montreal. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from Montreal (average of £334). Flying from Montreal in July will prove the most costly (average of £538). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Airline reviews for flights from Montreal

Get insights into the airlines that provide service from Montreal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from Montreal. In the last 7 days, Cheapflights users made a total of 858,174 searches.
Check out reviews from past customers who have flown Virgin Atlantic and Air Canada from Montreal to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.2

Entertainment

7.5

Boarding

7.7

Comfort

7.3

Food

6.9

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Crew

8.2

Entertainment

7.5

Boarding

7.7

Comfort

7.3

Food

6.9

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Crew

8.2

Entertainment

7.5

Boarding

7.7

Comfort

7.3

Food

6.9

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Direct flights from Canada

Book a direct flight from one of these other cities located in Canada.

Related info for your journey

Access useful and relevant information related to your journey from Montreal. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 16 December 2025.
  • What are the most popular destinations to fly to from Montreal?

    This month, the top selected destinations from Montreal are Cancún, Bogotá, Bangkok Suvarnabhumi Airport. Throughout the year, Cancún, Casablanca, Beirut are some of the top choices made by users flying from Montreal.

  • What are the cheapest airlines flying from Montreal to anywhere?

    Over the past few days, we've found that WestJet, Porter Airlines, and Air Canada have the cheapest prices from Montreal. WestJet flights from Montreal to Cancun (£81), Porter Airlines flights from Montreal to London (£136), and Air Canada flights from Montreal to London Heathrow (£202).

  • What is the cheapest month to fly from Montreal?

    At the present moment the cheapest month to fly from Montreal is currently November; with July being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • Where are the cheapest places to fly to from Montreal?

    Check out the cheapest flights from Montreal to embark to:
    Travel from Montreal to London from £260 round trip

  • How does Cheapflights help users find flights from Montreal?

    Cheapflights makes it easy to find flights from Montreal by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

    It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Montreal.

  • Can Cheapflights find flights from Montreal with no change fees?

    Need flexible booking options for your flight from Montreal ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

  • Can Cheapflights notify me if prices for flights from Montreal become cheaper?

    Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

See more FAQs

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Montreal?

Cheapflights makes it easy to find flights from Montreal by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Montreal.

Can Cheapflights find flights from Montreal with no change fees?

Need flexible booking options for your flight from Montreal ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Montreal become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.