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C$ 543+ 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 13/1. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
3 Jan — 10 Jan1
1 adult
1 adult, Economy, 0 bags

Flights to Portsmouth in 2025

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 4 December 2025.

Thu 25/129:15 p.m.YYZ - SOU
1 stop14h 45mDelta
Thu 15/19:00 a.m.SOU - YYZ
1 stop11h 40mDelta
Deal found 2/12C$ 1,259
Tue 30/129:15 p.m.YYZ - SOU
1 stop30h 05mDelta
Thu 15/19:00 a.m.SOU - YYZ
1 stop15h 15mDelta
Deal found 2/12C$ 1,326
Sun 28/129:15 p.m.YYZ - SOU
1 stop29h 55mDelta
Thu 15/19:00 a.m.SOU - YYZ
1 stop11h 40mDelta
Deal found 2/12C$ 1,376
Mon 29/126:10 p.m.YYZ - SOU
2 stops33h 00mDelta
Thu 15/19:00 a.m.SOU - YYZ
1 stop15h 15mDelta
Deal found 2/12C$ 1,449
Fri 26/126:10 p.m.YYZ - SOU
2 stops33h 40mDelta
Thu 15/15:35 p.m.SOU - YYZ
1 stop27h 05mDelta
Deal found 2/12C$ 1,499
Mon 15/124:44 p.m.YYZ - SOU
2 stops21h 56mBritish Airways
Sun 11/14:05 p.m.SOU - YYZ
2 stops34h 46mBritish Airways
Deal found 4/12C$ 1,521
Mon 15/124:44 p.m.YYZ - SOU
2 stops14h 11mBritish Airways
Sat 10/15:15 p.m.SOU - YYZ
2 stops51h 40mBritish Airways
Deal found 4/12C$ 1,567

Find flight deals to Portsmouth

Find the latest flights to Portsmouth in 2025, 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 4 December 2025.

Round-trip from

C$ 788

One-way from

C$ 491

Popular in

December

Cheapest in

February

Average price

C$ 1,189
SWISS
  • SWISS
  • 11/1-20/1
  • 2 total stops
  • 42h 24m total
  • Toronto to London
Search Deals
16/1
  • 16/1
  • 2 total stops
  • 18h 35m total
  • Toronto to Portsmouth
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 4 December 2025.
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

Wed 21/1

10:05 a.m.-8:25 a.m.

2 stops17h 20m

Southampton Eastleigh

Sun 25/1

5:45 p.m.-11:20 a.m.

2 stops46h 35m

C$ 942

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Wed 22/4

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

1 stop10h 50m

Southampton Eastleigh

Tue 28/4

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

1 stop25h 00m

C$ 960

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Wed 22/4

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

1 stop10h 50m

Southampton Eastleigh

Sun 26/4

5:20 p.m.-10:57 p.m.

2 stops34h 37m

C$ 999

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Tue 21/4

12:10 p.m.-8:35 a.m.

2 stops15h 25m

Southampton Eastleigh

Thu 30/4

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

1 stop31h 35m

C$ 999

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Fri 24/4

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

1 stop11h 00m

Southampton Eastleigh

Wed 29/4

5:20 p.m.-3:18 p.m.

2 stops26h 58m

C$ 1,059

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Fri 24/4

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

1 stop11h 00m

Southampton Eastleigh

Mon 27/4

9:05 a.m.-10:57 p.m.

2 stops18h 52m

C$ 1,119

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Tue 26/5

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

1 stop10h 50m

Southampton Eastleigh

Sun 14/6

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

1 stop31h 35m

C$ 1,135

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Mon 25/5

10:10 p.m.-4:50 p.m.

1 stop13h 40m

Southampton Eastleigh

Sun 7/6

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

1 stop31h 35m

C$ 1,135

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Tue 26/5

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

1 stop10h 50m

Southampton Eastleigh

Wed 3/6

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

1 stop15h 50m

C$ 1,135

TorontoSouthampton

YYZ - SOU

YYZSOU

Toronto Pearson Intl

Wed 27/5

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

1 stop10h 50m

Southampton Eastleigh

Wed 3/6

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

1 stop15h 50m

C$ 1,135

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 15 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 18 hours 37 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.

When is the cheapest time to fly to Portsmouth?

Use this chart to determine the cheapest time to fly round-trip from Toronto to Portsmouth. Price data was last updated on 16 December 2024.

Users looking for the lowest fares to Portsmouth should consider flying on Tuesday afternoons, when prices are typically cheapest. Budget-minded travellers will want to avoid Friday at noon, when prices are usually at their highest.

Weekly flight availability to Portsmouth

The most flights from Toronto to Portsmouth are scheduled on a Thursday (35 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 on average).

What are the most popular airlines that fly to Portsmouth?

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

KLM
KLM
From C$ 1,047
Aer Lingus
Aer Lingus
From C$ 1,036
Delta
Delta
From C$ 861

What are the cheapest airlines that fly to Portsmouth?

The cheapest airlines flying from Toronto to Portsmouth are Delta, 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 4 December 2025.
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
1,430 reviews
Check prices

Crew

8.4

Food

7.2

Boarding

7.8

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,430 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Crew

8.4

Food

7.2

Boarding

7.8

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Aer Lingus
7.2
Good
1,384 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Crew

8.4

Food

7.2

Boarding

7.8

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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$ 1,069, however they can be found for as little as C$ 133.

  • 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. Aerotel London Heathrow Airport Terminal 2-3 is the closest property to London Heathrow (0.0 km away from London Heathrow).

See more FAQs

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