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Cheap flights from Portsmouth to Montreal from £363

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 19/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YMQ
22 Jul — 29 Jul1
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 22 June 2026.

Sat 19/909:20
SOU
-
YUL
2 stops29h 29m
British Airways
Sat 10/1022:00
YUL
-
SOU
2 stops17h 20m
British Airways
Deal found 20/6£645
Mon 21/909:20
SOU
-
YUL
2 stops29h 29m
British Airways
Mon 12/1022:00
YUL
-
SOU
2 stops16h 25m
British Airways
Deal found 22/6£646
Thu 3/919:30
SOU
-
YUL
2 stops53h 45m
British Airways
Sun 6/922:00
YUL
-
SOU
2 stops17h 55m
British Airways
Deal found 19/6£693
Sun 19/717:30
SOU
-
YUL
2 stops23h 30m
KLM
Sun 26/718:50
YUL
-
SOU
1 stop17h 45m
KLM
Deal found 21/6£710
Wed 2/906:50
SOU
-
YUL
2 stops18h 25m
British Airways
Sun 6/922:00
YUL
-
SOU
2 stops17h 55m
British Airways
Deal found 21/6£758
Mon 21/1208:55
SOU
-
YUL
2 stops15h 20m
British Airways
Mon 11/121:15
YUL
-
SOU
2 stops30h 10m
British Airways
Deal found 22/6£767
Fri 18/920:00
SOU
-
YUL
2 stops42h 49m
British Airways
Fri 9/1022:00
YUL
-
SOU
2 stops35h 30m
British Airways
Deal found 19/6£787

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 22 June 2026.

Round-trip from

£645

One-way from

£363

Popular in

December

Cheapest in

September

Average price

£473
British Airways
  • British Airways
  • 19/9-10/10
  • 4 total stops
  • 46h 49m total
  • Portsmouth to Montreal
Search Deals
19/7
  • 19/7
  • 2 total stops
  • 55h 15m total
  • Portsmouth to Montreal
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 22 June 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

Sat 19/9

09:20-09:49

2 stops29h 29m

Montreal Pierre Elliott Trudeau Intl

Sat 10/10

22:00-20:20

2 stops17h 20m

£645

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Mon 21/9

09:20-09:49

2 stops29h 29m

Montreal Pierre Elliott Trudeau Intl

Mon 12/10

22:00-19:25

2 stops16h 25m

£646

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Thu 3/9

19:30-20:15

2 stops53h 45m

Montreal Pierre Elliott Trudeau Intl

Sun 6/9

22:00-20:55

2 stops17h 55m

£693
Fastest return journey

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Sun 19/7

17:30-12:00

2 stops23h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 26/7

18:50-17:35

1 stop17h 45m

£710

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Fri 18/9

20:00-09:49

2 stops42h 49m

Montreal Pierre Elliott Trudeau Intl

Fri 9/10

22:00-14:30

2 stops35h 30m

£787

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Thu 17/9

20:00-09:49

2 stops42h 49m

Montreal Pierre Elliott Trudeau Intl

Thu 8/10

10:30-19:30

2 stops28h 00m

£830

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Thu 16/7

19:55-20:15

2 stops29h 20m

Montreal Pierre Elliott Trudeau Intl

Thu 6/8

22:00-19:25

2 stops16h 25m

£1,064
Cheapest one-way

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Sun 19/7

20:00-10:40

3 stops43h 40m

£397

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Tue 7/7

12:20-10:30

2 stops27h 10m

£403

SouthamptonMontreal

SOU - YUL

SOUYUL

Southampton Eastleigh

Sat 1/8

20:00-00:25

3 stops33h 25m

£424

Flights are sorted by cheapest return flights first.

Deals found on 18/6

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

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 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 22 June 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.

Weekly flight availability from Portsmouth to Montreal

Explore weekly flight availability from Portsmouth to Montreal. 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 22 June 2026.

The most flights from P0R to YMQ are scheduled on a Saturday (20 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (10 on average).

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 29h 29m. Portsmouth and Montreal are separated by a distance of 3217 mi.

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

    Consider Air Canada (97%), United Airlines (97%) or Lufthansa (97%) 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 £1,027, our data indicates the cheapest price to be £338. The most popular route (Southampton Eastleigh - Montreal Pierre Elliott Trudeau Intl), is priced around £645.

  • 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.

See more FAQs

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.

Top 6 airlines flying from Portsmouth to Montreal

Discover the top 6 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 22 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapest£317Average£493FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air CanadaCheapest£378Average£558FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
FinnairCheapest£394Average£705FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£397Average£593FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£420Average£572FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£430Average£610FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

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 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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