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Cheap flights from Portsmouth to Montreal from £649

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YMQ
23 Apr — 30 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Montreal

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to Montreal
Explore the most affordable flight options available from Portsmouth to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 March 2026.

Tue 5/517:20
SOU
-
YUL
1 stop28h 35m
KLM
Tue 12/518:50
YUL
-
SOU
1 stop17h 00m
KLM
Deal found 21/3£649
Tue 5/509:05
SOU
-
YUL
1 stop12h 50m
Virgin Atlantic
Tue 12/512:49
YUL
-
SOU
2 stops14h 46m
Virgin Atlantic
Deal found 21/3£672
Sun 3/517:20
SOU
-
YUL
1 stop28h 35m
KLM
Sun 10/518:50
YUL
-
SOU
1 stop17h 00m
KLM
Deal found 19/3£679
Wed 8/409:05
SOU
-
YUL
1 stop12h 50m
KLM
Tue 21/718:50
YUL
-
SOU
1 stop17h 45m
KLM
Deal found 23/3£687
Mon 21/909:20
SOU
-
YUL
2 stops29h 25m
British Airways
Mon 12/1022:00
YUL
-
SOU
2 stops16h 25m
British Airways
Deal found 23/3£722
Sat 19/909:20
SOU
-
YUL
2 stops29h 25m
British Airways
Sat 10/1022:00
YUL
-
SOU
2 stops17h 15m
British Airways
Deal found 21/3£724
Sat 11/407:50
SOU
-
YUL
2 stops41h 25m
British Airways
Mon 20/722:00
YUL
-
SOU
2 stops17h 55m
British Airways
Deal found 23/3£726
Wed 10/614:25
SOU
-
YUL
2 stops34h 50m
British Airways
Sun 14/622:00
YUL
-
SOU
2 stops17h 55m
British Airways
Deal found 20/3£728

Find flight deals from Portsmouth to Montreal

Keep the following information in mind while searching for Portsmouth to Montreal flight deals. Data was last updated 24 March 2026.

Round-trip from

£649

Popular in

December

Cheapest in

September

Average price

£491
KLM
  • KLM
  • 5/5-12/5
  • 2 total stops
  • 45h 35m total
  • Portsmouth to Montreal
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£20 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Montreal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 24 March 2026.
Use the filters below to find and compare flights from Portsmouth to Montreal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Tue 5/5

17:20-16:55

1 stop28h 35m

Montreal Pierre Elliott Trudeau Intl

Tue 12/5

18:50-16:50

1 stop17h 00m

£649
Fastest return journey

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Tue 5/5

09:05-16:55

1 stop12h 50m

Montreal Pierre Elliott Trudeau Intl

Tue 12/5

12:49-08:35

2 stops14h 46m

£672

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Wed 10/6

19:55-20:15

2 stops53h 20m

Montreal Pierre Elliott Trudeau Intl

Sun 14/6

22:00-20:55

2 stops17h 55m

£729

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Sun 3/5

17:20-12:00

2 stops23h 40m

Montreal Pierre Elliott Trudeau Intl

Sun 10/5

12:15-08:35

2 stops15h 20m

£732

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Thu 25/6

14:25-20:15

2 stops34h 50m

Montreal Pierre Elliott Trudeau Intl

Sat 4/7

22:00-08:30

2 stops29h 30m

£747

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Tue 7/4

17:20-16:55

1 stop28h 35m

Montreal Pierre Elliott Trudeau Intl

Tue 21/7

18:50-17:35

1 stop17h 45m

£767

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Mon 20/4

19:55-20:15

2 stops29h 20m

Montreal Pierre Elliott Trudeau Intl

Mon 11/5

22:00-19:25

2 stops16h 25m

£772

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Tue 21/4

08:55-20:15

2 stops16h 20m

Montreal Pierre Elliott Trudeau Intl

Tue 12/5

22:00-19:25

2 stops16h 25m

£774

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Thu 25/6

17:20-16:55

1 stop28h 35m

Montreal Pierre Elliott Trudeau Intl

Sat 4/7

19:20-17:00

2 stops16h 40m

£789

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Tue 7/4

17:20-16:55

1 stop28h 35m

Montreal Pierre Elliott Trudeau Intl

Sat 18/7

18:50-17:00

1 stop17h 10m

£797

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 13 resultsSorted by cheapest first
1
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Best time to book a flight from Portsmouth to Montreal

Have a flexible travel schedule? Discover the best time to fly to Montreal from Portsmouth 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 Portsmouth to Montreal

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

Currently, September is the cheapest month in which you can book a flight from Portsmouth to Montreal (average of £285). Flying from Portsmouth to Montreal in December is currently the most expensive (average of £386). 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 P0R to YMQ?

Find hourly flight availability from Portsmouth to Montreal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 24 March 2026.

When flying from Portsmouth to Montreal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Montreal. 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 Portsmouth to Montreal?

    Departing from Portsmouth to Montreal will take you 12h 50m. Portsmouth and Montreal are separated by a distance of 3217 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Consider Aegean Airlines (96%), Air Canada (90%) or Thai Airways (90%) when booking your flight. These represent the most reliable airlines when flying from Portsmouth to Montreal.

  • What are the cheapest flights from Portsmouth to Montreal?

    Looking for the cheapest flight from Portsmouth to Montreal? While on average our users pay £1,033, our data indicates the cheapest price to be £317. The most popular route (Southampton Eastleigh - Montreal Pierre Elliott Trudeau Intl), is priced around £649.

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

    Yes. In addition to deals on Portsmouth to Montreal flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portsmouth to Montreal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Montreal.

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

    Yes. Cheapflights offers flight deals from Portsmouth to Montreal 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 Portsmouth to Montreal?

    Currently, September is the cheapest month in which you can book a flight from Portsmouth to Montreal (average of £285). Flying from Portsmouth to Montreal in December is currently the most expensive (average of £386). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 7 airlines flying from Portsmouth to Montreal

Discover the top 7 airlines that operate flights from Portsmouth to Montreal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 24 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapest£303Average£457FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
United AirlinesCheapest£328Average£496FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest£362Average£504FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£384Average£531FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£390Average£757FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£396Average£518FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£426Average£726FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Portsmouth to Montreal?

When you search for this flight from Portsmouth to Montreal, 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 Portsmouth to Montreal?

Cheapflights helps you find that perfect flight to Montreal from Portsmouth by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Need flexible booking options for your flight to Montreal from Portsmouth? 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 Portsmouth to Montreal become cheaper?

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

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