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C$ 348+ 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 19/7. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
1 Jul — 8 Jul1
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 1 June 2026.

Mon 13/710:55 p.m.
YYZ
-
SOU
1 stop15h 35m
Multiple Airlines
Mon 20/79:20 a.m.
SOU
-
YYZ
2 stops36h 50m
Multiple Airlines
Deal found 27/5C$ 724
Tue 18/87:35 a.m.
YYZ
-
SOU
2 stops28h 15m
Multiple Airlines
Tue 25/85:20 p.m.
SOU
-
YYZ
2 stops26h 40m
Multiple Airlines
Deal found 30/5C$ 787
Mon 6/76:20 p.m.
YYZ
-
SOU
2 stops17h 30m
Multiple Airlines
Tue 14/78:00 p.m.
SOU
-
YYZ
2 stops26h 15m
Multiple Airlines
Deal found 28/5C$ 836
Wed 23/97:15 p.m.
YYZ
-
SOU
1 stop10h 50m
Multiple Airlines
Sun 4/1010:00 a.m.
SOU
-
YYZ
1 stop30h 00m
Multiple Airlines
Deal found 28/5C$ 850
Mon 7/99:55 p.m.
YYZ
-
SOU
1 stop29h 50m
Delta
Sat 19/99:15 a.m.
SOU
-
YYZ
2 stops19h 09m
Delta
Deal found 28/5C$ 1,031
Mon 13/710:20 a.m.
YTZ
-
SOU
3 stops28h 05m
Multiple Airlines
Mon 20/77:55 p.m.
SOU
-
YTZ
2 stops24h 56m
Multiple Airlines
Deal found 29/5C$ 1,301

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 1 June 2026.

Round-trip from

C$ 799

One-way from

C$ 348

Popular in

December

Cheapest in

February

Average price

C$ 922
3/9-10/9
  • 3/9-10/9
  • 2 total stops
  • 23h 15m total
  • Toronto to London
Search Deals
19/7
  • 19/7
  • 2 total stops
  • 29h 30m total
  • Toronto to Portsmouth
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
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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 1 June 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 7/9

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

1 stop29h 50m

Southampton Eastleigh

Sat 19/9

5:20 p.m.-11:24 p.m.

2 stops35h 04m

C$ 1,034

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Tue 21/7

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

1 stop11h 00m

Southampton Eastleigh

Tue 28/7

6:05 p.m.-7:55 p.m.

1 stop30h 50m

C$ 1,291
Quickest round-trip

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Tue 7/7

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

1 stop11h 00m

Southampton Eastleigh

Thu 16/7

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

1 stop15h 40m

C$ 1,291

TorontoSouthampton

YTZ - SOU

YTZSOU

Toronto Island

Mon 13/7

10:20 a.m.-7:25 p.m.

3 stops28h 05m

Southampton Eastleigh

Mon 20/7

7:55 p.m.-3:51 p.m.

2 stops24h 56m

C$ 1,301

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Sat 4/7

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

1 stop11h 00m

Southampton Eastleigh

Wed 8/7

6:05 p.m.-5:39 p.m.

2 stops28h 34m

C$ 1,327

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Thu 9/7

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

1 stop11h 00m

Southampton Eastleigh

Fri 24/7

6:05 p.m.-3:20 p.m.

2 stops26h 15m

C$ 1,329

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Sat 4/7

4:45 p.m.-5:00 p.m.

1 stop19h 15m

Southampton Eastleigh

Sun 19/7

5:30 p.m.-5:39 p.m.

2 stops29h 09m

C$ 1,329

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Fri 3/7

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

1 stop11h 00m

Southampton Eastleigh

Fri 24/7

6:05 p.m.-3:20 p.m.

2 stops26h 15m

C$ 1,329
Cheapest one-way

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Sun 19/7

10:10 p.m.-8:40 a.m.

2 stops29h 30m

C$ 348

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Wed 8/7

9:35 p.m.-4:50 p.m.

1 stop14h 15m

C$ 373

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/5

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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 19 hours 12 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 Monday (45 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (27 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$ 1,017
KLM
KLM
From C$ 1,037

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).

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 1 June 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
7.8
Good
1,524 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.8

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,524 reviews
KLM
7.8
Good
1,524 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.8

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Aer Lingus
7.3
Good
1,590 reviews
KLM
7.8
Good
1,524 reviews
Check prices

Boarding

7.8

Crew

8.4

Overall

7.8

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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$ 1,028, however they can be found for as little as C$ 223.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, Montreal offers the quickest one-way flight (9 hours 40 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

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