C$ 385+ 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 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
4 Aug — 11 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 5 July 2026.

Mon 24/810:55 p.m.
YYZ
-
SOU
1 stop15h 35m
Multiple Airlines
Wed 9/93:35 p.m.
SOU
-
YYZ
2 stops26h 45m
Multiple Airlines
Deal found 3/7C$ 845
Sun 23/811:55 p.m.
YYZ
-
SOU
2 stops27h 50m
Multiple Airlines
Tue 8/91:25 p.m.
SOU
-
YYZ
3 stops37h 20m
Multiple Airlines
Deal found 2/7C$ 901
Sun 23/85:35 p.m.
YYZ
-
SOU
1 stop10h 05m
Aer Lingus
Tue 8/99:15 a.m.
SOU
-
YYZ
1 stop11h 35m
Aer Lingus
Deal found 2/7C$ 940
Thu 17/94:45 p.m.
YYZ
-
SOU
1 stop10h 50m
Delta
Fri 25/99:05 a.m.
SOU
-
YYZ
2 stops19h 07m
Delta
Deal found 2/7C$ 1,001
Mon 7/94:45 p.m.
YYZ
-
SOU
1 stop10h 50m
Delta
Sat 19/99:15 a.m.
SOU
-
YYZ
2 stops18h 57m
Delta
Deal found 1/7C$ 1,048
Tue 28/79:55 p.m.
YYZ
-
SOU
1 stop14h 40m
Delta
Wed 16/95:20 p.m.
SOU
-
YYZ
1 stop25h 00m
Delta
Deal found 5/7C$ 1,060
Wed 22/76:55 p.m.
YTZ
-
SOU
3 stops14h 50m
Multiple Airlines
Sun 2/88:00 p.m.
SOU
-
YTZ
3 stops31h 20m
Multiple Airlines
Deal found 1/7C$ 1,984

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 5 July 2026.

Round-trip from

C$ 772

One-way from

C$ 385

Popular in

July

Cheapest in

February

Average price

C$ 1,208
Air Transat
  • Air Transat
  • 25/9-4/10
  • 1 total stop
  • 18h 40m total
  • Toronto to London
Search Deals
24/8
  • 24/8
  • 3 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 5 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
Quickest round-trip

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Mon 7/9

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

1 stop10h 50m

Southampton Eastleigh

Sat 19/9

9:15 a.m.-11:12 p.m.

2 stops18h 57m

C$ 1,048

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Thu 3/12

9:15 p.m.-5:00 p.m.

1 stop14h 45m

Southampton Eastleigh

Fri 11/12

8:40 a.m.-7:15 p.m.

1 stop15h 35m

C$ 1,060

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Fri 17/7

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

1 stop11h 00m

Southampton Eastleigh

Wed 22/7

6:05 p.m.-11:02 p.m.

2 stops33h 57m

C$ 1,101

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Wed 29/7

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

1 stop11h 00m

Southampton Eastleigh

Mon 14/9

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

2 stops26h 55m

C$ 1,382

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Wed 29/7

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

1 stop11h 00m

Southampton Eastleigh

Fri 18/9

5:20 p.m.-11:12 p.m.

2 stops34h 52m

C$ 1,382

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Wed 22/7

11:30 p.m.-5:35 p.m.

2 stops13h 05m

Southampton Eastleigh

Sun 2/8

9:15 a.m.-9:00 p.m.

2 stops16h 45m

C$ 1,624

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Wed 30/9

1:15 p.m.-4:50 p.m.

2 stops22h 35m

Southampton Eastleigh

Tue 6/10

9:15 a.m.-3:50 p.m.

1 stop11h 35m

C$ 1,641

TorontoSouthampton

YTZ - SOU

YTZSOU

Toronto Island

Wed 22/7

10:55 a.m.-7:30 p.m.

3 stops27h 35m

Southampton Eastleigh

Sun 2/8

9:20 a.m.-10:17 p.m.

2 stops17h 57m

C$ 2,098
Cheapest one-way
Quickest one-way

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Tue 18/8

7:15 p.m.-10:15 a.m.

1 stop10h 00m

C$ 436

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Fri 14/8

11:55 p.m.-8:25 a.m.

3 stops27h 30m

C$ 568

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/7

Showing 1-10 of 21 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 12 hours 35 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 Friday (45 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (20 on average).

What are the most popular airlines that fly to Portsmouth?

The most popular airlines flying from Toronto to Portsmouth are Aer Lingus and KLM.

Aer Lingus
Aer Lingus
From C$ 1,182
KLM
KLM
From C$ 1,065

What are the cheapest airlines that fly to Portsmouth?

The cheapest airlines flying from Toronto to Portsmouth are KLM and 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, WestJet 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$ 1,631, however they can be found for as little as C$ 124.

  • 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 20 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. Aeropartment & Aerotel, London Heathrow Airport, Terminal 4, Ev Stations & Cheap Parking On Site! 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.