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Cheap flights from Montreal to Portsmouth from C$ 599

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 16/10. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — LHR
4 May — 11 May1
1 adult

Cheap flight deals from Montreal to Portsmouth

Keep the following information in mind while searching for Montreal to Portsmouth flight deals. Data was last updated 29 April 2025.

Round-trip from

C$ 1,037

One-way from

C$ 599

Popular in

February

Cheapest in

January

Average price

C$ 1,402
Virgin Atlantic
  • Virgin Atlantic
  • 9/6-14/6
  • 2 total stops
  • 29h 45m total
  • Montreal to Portsmouth
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16/10
  • 16/10
  • 2 total stops
  • 15h 10m total
  • Montreal to Portsmouth
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 260 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (C$ 178 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
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Find flight deals from Montreal to Portsmouth

Cheapest flights from Montreal to Portsmouth
Explore the most affordable flight options available from Montreal to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.

Mon 9/66:50 p.m.YUL - SOU
1 stop17h 10mVirgin Atlantic
Sat 14/69:20 a.m.SOU - YUL
1 stop12h 35mVirgin Atlantic
Deal found 28/4C$ 1,037
Wed 28/56:50 p.m.YUL - SOU
1 stop17h 10mKLM
Wed 4/65:35 p.m.SOU - YUL
1 stop28h 20mKLM
Deal found 28/4C$ 1,170
Wed 28/55:05 p.m.YUL - SOU
2 stops18h 55mDelta
Wed 4/69:20 a.m.SOU - YUL
1 stop12h 35mDelta
Deal found 28/4C$ 1,172
Wed 25/612:00 p.m.YUL - SOU
2 stops23h 35mAer Lingus
Sat 5/79:40 a.m.SOU - YUL
2 stops17h 00mAer Lingus
Deal found 28/4C$ 1,617
Wed 25/68:40 p.m.YUL - SOU
1 stop14h 55mMultiple Airlines
Sat 5/79:40 a.m.SOU - YUL
2 stops39h 56mMultiple Airlines
Deal found 28/4C$ 1,811

Cheapflights Fare Finder

Customize your flight search to find flights from Montreal to Portsmouth 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 629,999 searches. Data last updated 29 April 2025.
Use the filters below to find and compare flights from Montreal to Portsmouth that are best for you.

Fly from

Montreal

Fly to

Portsmouth

Route

Depart

Return

Price

MontrealSouthampton

YUL - SOU

YULSOU

Montreal Pierre Elliott Trudeau Intl

Mon 9/6

6:50 p.m.-5:00 p.m.

1 stop17h 10m

Southampton Eastleigh

Sat 14/6

9:20 a.m.-4:55 p.m.

1 stop12h 35m

C$ 1,037

MontrealSouthampton

YUL - SOU

YULSOU

Montreal Pierre Elliott Trudeau Intl

Wed 28/5

6:50 p.m.-5:00 p.m.

1 stop17h 10m

Southampton Eastleigh

Wed 4/6

5:35 p.m.-4:55 p.m.

1 stop28h 20m

C$ 1,170

MontrealSouthampton

YUL - SOU

YULSOU

Montreal Pierre Elliott Trudeau Intl

Wed 28/5

5:05 p.m.-5:00 p.m.

2 stops18h 55m

Southampton Eastleigh

Wed 4/6

9:20 a.m.-4:55 p.m.

1 stop12h 35m

C$ 1,172

MontrealSouthampton

YUL - SOU

YULSOU

Montreal Pierre Elliott Trudeau Intl

Wed 25/6

12:00 p.m.-4:35 p.m.

2 stops23h 35m

Southampton Eastleigh

Sat 5/7

9:40 a.m.-9:40 p.m.

2 stops17h 00m

C$ 1,617

MontrealSouthampton

YUL - SOU

YULSOU

Montreal Pierre Elliott Trudeau Intl

Wed 25/6

8:40 p.m.-4:35 p.m.

1 stop14h 55m

Southampton Eastleigh

Sat 5/7

9:40 a.m.-8:36 p.m.

2 stops39h 56m

C$ 1,811

MontrealSouthampton

YUL - SOU

YULSOU

Montreal Pierre Elliott Trudeau Intl

Thu 16/10

10:45 p.m.-6:55 p.m.

2 stops15h 10m

C$ 599

MontrealSouthampton

YUL - SOU

YULSOU

Montreal Pierre Elliott Trudeau Intl

Thu 16/10

6:50 p.m.-5:00 p.m.

1 stop17h 10m

C$ 1,161

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/4

Best time to book a flight from Montreal to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Montreal with our price prediction graph.
Estimated round-trip 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 Portsmouth

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

Currently, January is the cheapest month in which you can book a flight from Montreal to Portsmouth (average of C$ 560). Flying from Montreal to Portsmouth in July is currently the most expensive (average of C$ 870). 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 P0R?

Find hourly flight availability from Montreal to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 April 2025.

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

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

Use this chart to determine the cheapest time to fly round-trip from Montreal to Portsmouth. Price data was last updated on 15 September 2024.

Travelers seeking maximum savings on their Montreal to Portsmouth flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Montreal to Portsmouth

Explore weekly flight availability from Montreal to Portsmouth. 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 29 April 2025.

The most flights from YMQ to P0R are scheduled on a Wednesday (20 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (13 on average).

Rainfall in Portsmouth by month

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

In terms of precipitation, rainfall in Portsmouth ranges from 25.0 - 76.0 mm per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Portsmouth when rainfall is around 25.0 mm.

Temperature in Portsmouth by month

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

If weather is an important factor for your trip to Portsmouth, 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 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Portsmouth

Get insights into the airlines that provide service to Portsmouth. 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 Portsmouth. Reviews last updated 29 April 2025.
Delta
8.0
Very good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

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
7,929 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

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
1,333 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

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.
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

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.
Aer Lingus
7.0
Good
1,076 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

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

Find useful and relevant information for your journey from Montreal to Portsmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    No one likes to see their flight delayed. When booking a flight from Montreal to Portsmouth consider choosing Thai Airways (82%), Air Canada (75%) or Austrian Airlines (75%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Montreal to Portsmouth?

    On average you can expect to pay C$ 1,755 for a flight from Montreal to Portsmouth. The cheapest flight overall is C$ 640 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - Southampton Eastleigh) is currently priced at C$ 1,037.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Montreal to Portsmouth (average of C$ 560). Flying from Montreal to Portsmouth in July is currently the most expensive (average of C$ 870). 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

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Alternative routes for Montreal to Portsmouth

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Montreal to Portsmouth

Discover the top 10 airlines that operate flights from Montreal to Portsmouth. 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 629,999 searches. Data last updated 29 April 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapestC$ 570AverageC$ 1,011FlexibilityNo cancel feeOn-time76%
Search Finnair flights
TAP AIR PORTUGALCheapestC$ 605AverageC$ 672FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air FranceCheapestC$ 611AverageC$ 900FlexibilityNo cancel feeOn-time77%
Search Air France flights
Porter AirlinesCheapestC$ 689AverageC$ 775FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air TransatCheapestC$ 693AverageC$ 985FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air CanadaCheapestC$ 748AverageC$ 990FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AtlanticCheapestC$ 771AverageC$ 864FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapestC$ 790AverageC$ 1,028FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapestC$ 799AverageC$ 1,048FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapestC$ 806AverageC$ 1,174FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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

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

Deals for Montreal to Portsmouth flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Montreal to Portsmouth for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes, we can. To see specific flights from Montreal to Portsmouth with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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Of course! You can now track prices for flights from Montreal to Portsmouth and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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