C$ 353+ Cheap flights to Portsmouth

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.
— LHR
17 Aug — 24 Aug1
1 adult
1 adult, Economy, 0 bags

Flights to Portsmouth in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Portsmouth
Explore the most affordable flight options available to Portsmouth. Find the lowest fares based on data from user searches, with prices last updated on 18 July 2026.

Mon 17/810:55 p.m.
YYZ
-
SOU
1 stop12h 55m
Multiple Airlines
Tue 25/88:00 p.m.
SOU
-
YYZ
2 stops26h 15m
Multiple Airlines
Deal found 13/7C$ 763
Mon 10/810:55 p.m.
YYZ
-
SOU
1 stop12h 55m
Multiple Airlines
Wed 26/88:00 p.m.
SOU
-
YYZ
2 stops30h 45m
Multiple Airlines
Deal found 13/7C$ 773
Mon 10/811:55 p.m.
YYZ
-
SOU
1 stop14h 35m
Multiple Airlines
Wed 19/88:00 p.m.
SOU
-
YYZ
1 stop24h 50m
Multiple Airlines
Deal found 16/7C$ 899
Mon 10/810:45 a.m.
YTZ
-
SOU
3 stops22h 00m
Multiple Airlines
Wed 26/82:20 p.m.
SOU
-
YTZ
2 stops22h 31m
Multiple Airlines
Deal found 13/7C$ 1,257

Find flight deals to Portsmouth

Find the latest flights to Portsmouth in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 629,999 searches and data was last updated on 18 July 2026.

Round-trip from

C$ 755

One-way from

C$ 353

Popular in

July

Cheapest in

February

Average price

C$ 1,199
Air Transat
  • Air Transat
  • 17/9-23/9
  • 2 total stops
  • 43h 46m total
  • Toronto to London
Search Deals
16/10
  • 16/10
  • 2 total stops
  • 32h 50m total
  • Toronto to Portsmouth
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 178 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Portsmouth that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 629,999 searches and data was last updated on 18 July 2026.
Use the filters below to find and compare flights to Portsmouth that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest round-trip

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Mon 10/8

11:55 p.m.-7:30 p.m.

1 stop14h 35m

Southampton Eastleigh

Wed 19/8

8:00 p.m.-3:50 p.m.

1 stop24h 50m

C$ 899

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Tue 6/10

9:55 p.m.-4:50 p.m.

1 stop13h 55m

Southampton Eastleigh

Thu 22/10

5:20 p.m.-1:20 p.m.

1 stop25h 00m

C$ 956

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Thu 8/10

9:55 p.m.-4:50 p.m.

1 stop13h 55m

Southampton Eastleigh

Sun 18/10

9:15 a.m.-1:20 p.m.

1 stop33h 05m

C$ 956
Quickest round-trip

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Thu 8/10

4:45 p.m.-8:35 a.m.

1 stop10h 50m

Southampton Eastleigh

Tue 20/10

9:05 a.m.-7:55 p.m.

1 stop15h 50m

C$ 956

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Sun 4/10

4:45 p.m.-8:35 a.m.

1 stop10h 50m

Southampton Eastleigh

Wed 21/10

5:20 p.m.-1:20 p.m.

1 stop25h 00m

C$ 956

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Sat 3/10

9:55 p.m.-4:50 p.m.

1 stop13h 55m

Southampton Eastleigh

Sun 18/10

5:20 p.m.-1:20 p.m.

1 stop25h 00m

C$ 956

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Sat 3/10

4:45 p.m.-8:45 a.m.

1 stop11h 00m

Southampton Eastleigh

Tue 20/10

9:05 a.m.-7:55 p.m.

1 stop15h 50m

C$ 956

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Sun 13/9

4:45 p.m.-8:35 a.m.

1 stop10h 50m

Southampton Eastleigh

Thu 17/9

5:20 p.m.-3:15 p.m.

2 stops26h 55m

C$ 999

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Mon 7/9

6:25 p.m.-8:45 a.m.

2 stops33h 20m

Southampton Eastleigh

Sat 19/9

5:20 p.m.-10:59 p.m.

2 stops34h 39m

C$ 1,032

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Sun 9/8

11:40 p.m.-5:05 p.m.

1 stop12h 25m

Southampton Eastleigh

Sun 23/8

10:00 a.m.-11:00 a.m.

1 stop30h 00m

C$ 1,084

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/7

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Best time to book a flight to Portsmouth

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

How long is the flight to Portsmouth?

On average, a flight from Toronto to Portsmouth takes 16 hours 2 minutes. Flights to Portsmouth from other popular cities in Canada will vary in length. Below are a few examples of popular routes and their flight times.

Weekly flight availability to Portsmouth

The most flights from Toronto to Portsmouth are scheduled on a Tuesday (47 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (30 on average).

What are the most popular airlines that fly to Portsmouth?

The most popular airline flying from Toronto to Portsmouth is Aer Lingus.

Aer Lingus
Aer Lingus
From C$ 1,103

What are the cheapest airlines that fly to Portsmouth?

The cheapest airline flying from Toronto to Portsmouth is Aer Lingus.

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).

FAQs about flying to Portsmouth

  • Can I find cheaper flights to Portsmouth if I am willing to have layovers?

    Yes, flights with layovers are often cheaper than direct flights. Keep an eye out for flight deals to Portsmouth on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Portsmouth?

    Based on reviews from Cheapflights users, KLM is rated the highest out of the airlines that fly to Portsmouth.

  • How much is a round-trip flight to Portsmouth?

    A round-trip flight to Portsmouth will typically cost around C$ 1,749, however they can be found for as little as C$ 194.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, Toronto offers the quickest one-way flight (10 hours 5 minutes).

  • Does London Heathrow have rental cars?

    Yes. Those touching down at London Heathrow can take advantage of the rental car services offered upon their arrival.

  • Are there hotels close to London Heathrow?

    Yes. London Heathrow has hotels nearby for those requiring accommodations. Aerotel London Heathrow is the closest property to London Heathrow (0.0 km away from London Heathrow).

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.

Search flights to Portsmouth by cabin class

Find flights to Portsmouth, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First class flights to Portsmouth
Business class flights to Portsmouth
Prem Economy class flights to Portsmouth
Economy class flights to Portsmouth

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 to Portsmouth?

When you search for this flight to Portsmouth, 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 best flight for you.

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

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 to Portsmouth.

Can Cheapflights find flights to Portsmouth with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights to Portsmouth flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights to Portsmouth become cheaper?

Yes! Start tracking prices for Portsmouth flights today and get alerted when prices change. To subscribe and begin receiving alerts, click the bell icon next to the flight deals above and provide your email address.

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.