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C$ 476+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
22 Mar — 29 Mar1
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 20 February 2026.

Mon 6/410:00 p.m.
YYZ
-
SOU
1 stop29h 05m
Multiple Airlines
Mon 13/48:00 p.m.
SOU
-
YYZ
1 stop23h 15m
Multiple Airlines
Deal found 20/2C$ 854
Sun 1/39:15 p.m.
YYZ
-
SOU
1 stop14h 50m
Delta
Thu 5/38:50 a.m.
SOU
-
YYZ
1 stop11h 50m
Delta
Deal found 17/2C$ 912
Sun 5/49:55 p.m.
YYZ
-
SOU
1 stop13h 55m
Delta
Sun 12/49:15 a.m.
SOU
-
YYZ
1 stop15h 40m
Delta
Deal found 19/2C$ 928
Tue 31/34:45 p.m.
YYZ
-
SOU
1 stop10h 50m
Delta
Wed 8/45:20 p.m.
SOU
-
YYZ
1 stop25h 00m
Delta
Deal found 19/2C$ 930
Wed 6/59:55 p.m.
YYZ
-
SOU
1 stop29h 40m
Delta
Sun 17/59:15 a.m.
SOU
-
YYZ
1 stop15h 40m
Delta
Deal found 16/2C$ 932
Wed 6/59:55 p.m.
YYZ
-
SOU
1 stop29h 40m
Delta
Tue 19/55:20 p.m.
SOU
-
YYZ
1 stop25h 00m
Delta
Deal found 16/2C$ 957
Mon 6/49:55 p.m.
YYZ
-
SOU
1 stop13h 55m
Delta
Mon 13/49:05 a.m.
SOU
-
YYZ
2 stops18h 51m
Delta
Deal found 20/2C$ 965
Mon 6/41:55 p.m.
YTZ
-
SOU
3 stops22h 20m
Multiple Airlines
Mon 13/47:20 p.m.
SOU
-
YTZ
3 stops26h 55m
Multiple Airlines
Deal found 20/2C$ 1,501
Mon 6/72:55 p.m.
YTZ
-
SOU
2 stops12h 45m
Multiple Airlines
Fri 24/79:10 a.m.
SOU
-
YTZ
2 stops14h 32m
Multiple Airlines
Deal found 18/2C$ 3,071

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 20 February 2026.

Round-trip from

C$ 702

One-way from

C$ 476

Popular in

December

Cheapest in

May

Average price

C$ 742
Air Transat
  • Air Transat
  • 6/3-12/3
  • Nonstop
  • 15h 30m total
  • Toronto to London
Search Deals
3/4
  • 3/4
  • 1 total stop
  • 16h 45m total
  • Toronto to Portsmouth
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 45 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 February 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 20 February 2026.
Use the filters below to find and compare flights to Portsmouth that are best for you.

Fly from

Toronto

Route

Depart

Return

Price

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Sun 5/4

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

1 stop13h 55m

Southampton Eastleigh

Sun 12/4

9:15 a.m.-7:55 p.m.

1 stop15h 40m

C$ 928

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Tue 31/3

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

1 stop10h 50m

Southampton Eastleigh

Fri 10/4

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

1 stop25h 00m

C$ 930

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Wed 1/4

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

1 stop13h 55m

Southampton Eastleigh

Sun 12/4

9:15 a.m.-7:55 p.m.

1 stop15h 40m

C$ 930

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Tue 31/3

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

1 stop10h 50m

Southampton Eastleigh

Tue 7/4

5:20 p.m.-7:55 p.m.

1 stop31h 35m

C$ 930

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Wed 1/4

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

1 stop13h 55m

Southampton Eastleigh

Sat 11/4

5:20 p.m.-7:55 p.m.

1 stop31h 35m

C$ 930

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Tue 31/3

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

1 stop10h 50m

Southampton Eastleigh

Sat 11/4

5:20 p.m.-7:55 p.m.

1 stop31h 35m

C$ 930

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Tue 31/3

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

1 stop10h 50m

Southampton Eastleigh

Wed 8/4

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

1 stop25h 00m

C$ 930

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Wed 1/4

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

1 stop13h 55m

Southampton Eastleigh

Thu 9/4

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

1 stop25h 00m

C$ 930

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Sun 10/5

9:55 p.m.-8:35 a.m.

1 stop29h 40m

Southampton Eastleigh

Sun 17/5

9:15 a.m.-7:55 p.m.

1 stop15h 40m

C$ 932

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Fri 8/5

9:55 p.m.-8:45 a.m.

1 stop29h 50m

Southampton Eastleigh

Sun 17/5

9:15 a.m.-7:55 p.m.

1 stop15h 40m

C$ 932

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/2

Showing 1-10 of 23 results
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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 11 hours 22 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 (40 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (22 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$ 1,016
KLM
KLM
From C$ 1,027

What are the cheapest airlines that fly to Portsmouth?

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

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 20 February 2026.
See what other customers who have flown with KLM and Aer Lingus to the United Kingdom have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,458 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.7
Good
1,458 reviews
KLM
7.7
Good
1,458 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Aer Lingus
7.2
Good
1,456 reviews
KLM
7.7
Good
1,458 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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$ 798, however they can be found for as little as C$ 140.

  • 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 0 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

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