C$ 435+ 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 13/9. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
7 Sep — 14 Sep1
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 8 August 2026.

Mon 21/911:55 p.m. -
1 stop14h 35m
Tue 6/109:05 a.m. -
2 stops35h 45m
Deal found 7/8C$ 944
Thu 15/109:55 p.m. -
1 stop13h 55m
Thu 29/105:30 p.m. -
1 stop27h 10m
Deal found 3/8C$ 958
Fri 6/119:15 p.m. -
1 stop30h 40m
Sun 15/119:30 a.m. -
1 stop14h 45m
Deal found 4/8C$ 959
Sat 3/104:45 p.m. -
1 stop19h 05m
Tue 6/105:20 p.m. -
1 stop30h 55m
Deal found 7/8C$ 963
Sat 19/99:35 p.m. -
1 stop30h 05m
Sat 26/97:50 a.m. -
1 stop32h 10m
Deal found 5/8C$ 995
Fri 16/109:55 p.m. -
1 stop29h 50m
Mon 26/105:30 p.m. -
2 stops28h 08m
Deal found 3/8C$ 997
Sat 7/1112:15 p.m. -
2 stops15h 40m
Sat 14/115:30 p.m. -
1 stop30h 45m
Deal found 4/8C$ 998
Fri 2/106:10 a.m. -
2 stops29h 40m
Tue 6/105:20 p.m. -
1 stop30h 55m
Deal found 6/8C$ 1,000
Sun 1/115:55 p.m. -
1 stop9h 15m
Tue 17/115:30 p.m. -
1 stop27h 10m
Deal found 5/8C$ 1,016
Mon 2/116:10 p.m. -
2 stops33h 00m
Thu 19/115:30 p.m. -
2 stops28h 44m
Deal found 5/8C$ 1,029
Sat 19/94:30 p.m. -
3 stops35h 10m
Sat 26/98:00 p.m. -
3 stops28h 50m
Deal found 5/8C$ 1,402
Thu 13/88:30 a.m. -
2 stops30h 10m
Wed 26/82:20 p.m. -
2 stops22h 35m
Deal found 6/8C$ 1,437

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 8 August 2026.

Round-trip from

C$ 755

One-way from

C$ 435

Popular in

December

Cheapest in

February

Average price

C$ 1,167
Air Transat
  • Air Transat
  • 8/9-15/9
  • 2 total stops
  • 24h 15m total
  • Toronto to London
Search Deals
13/9
  • 13/9
  • 2 total stops
  • 29h 45m total
  • Toronto to Portsmouth
Search Deals
Highest demand for flights based on searches. 1% potential increase in price.
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 8 August 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 Toronto Pearson Intl - SOU Southampton Eastleigh

YYZSOU

Toronto Pearson Intl

Mon 19/10

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

1 stop13h 55m

Southampton Eastleigh

Mon 26/10

5:30 p.m.-4:40 p.m.

1 stop27h 10m

C$ 958

TorontoSouthampton

YYZ Toronto Pearson Intl - SOU Southampton Eastleigh

YYZSOU

Toronto Pearson Intl

Mon 21/9

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

1 stop13h 55m

Southampton Eastleigh

Tue 6/10

5:20 p.m.-7:15 p.m.

1 stop30h 55m

C$ 958

TorontoSouthampton

YYZ Toronto Pearson Intl - SOU Southampton Eastleigh

YYZSOU

Toronto Pearson Intl

Tue 3/11

5:55 p.m.-8:10 a.m.

1 stop9h 15m

Southampton Eastleigh

Thu 19/11

5:30 p.m.-7:15 p.m.

1 stop30h 45m

C$ 958
Quickest round-trip

TorontoSouthampton

YYZ Toronto Pearson Intl - SOU Southampton Eastleigh

YYZSOU

Toronto Pearson Intl

Thu 5/11

5:45 p.m.-8:10 a.m.

1 stop9h 25m

Southampton Eastleigh

Fri 13/11

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

1 stop15h 35m

C$ 959

TorontoSouthampton

YYZ Toronto Pearson Intl - SOU Southampton Eastleigh

YYZSOU

Toronto Pearson Intl

Sat 3/10

4:45 p.m.-4:50 p.m.

1 stop19h 05m

Southampton Eastleigh

Tue 6/10

5:20 p.m.-7:15 p.m.

1 stop30h 55m

C$ 963

TorontoSouthampton

YYZ Toronto Pearson Intl - SOU Southampton Eastleigh

YYZSOU

Toronto Pearson Intl

Tue 3/11

6:10 p.m.-5:00 p.m.

2 stops17h 50m

Southampton Eastleigh

Wed 18/11

5:30 p.m.-3:40 p.m.

1 stop27h 10m

C$ 997

TorontoSouthampton

YYZ Toronto Pearson Intl - SOU Southampton Eastleigh

YYZSOU

Toronto Pearson Intl

Tue 20/10

6:00 a.m.-8:45 a.m.

2 stops21h 45m

Southampton Eastleigh

Sat 24/10

5:20 p.m.-8:15 p.m.

1 stop31h 55m

C$ 997

TorontoSouthampton

YYZ Toronto Pearson Intl - SOU Southampton Eastleigh

YYZSOU

Toronto Pearson Intl

Sun 1/11

5:55 p.m.-8:10 a.m.

1 stop9h 15m

Southampton Eastleigh

Tue 17/11

5:30 p.m.-3:40 p.m.

1 stop27h 10m

C$ 1,016

TorontoSouthampton

YYZ Toronto Pearson Intl - SOU Southampton Eastleigh

YYZSOU

Toronto Pearson Intl

Fri 2/10

6:10 a.m.-4:50 p.m.

2 stops29h 40m

Southampton Eastleigh

Tue 6/10

9:05 a.m.-10:56 p.m.

2 stops18h 51m

C$ 1,029

TorontoSouthampton

YYZ Toronto Pearson Intl - SOU Southampton Eastleigh

YYZSOU

Toronto Pearson Intl

Sun 1/11

5:55 p.m.-8:10 a.m.

1 stop9h 15m

Southampton Eastleigh

Wed 18/11

5:30 p.m.-5:14 p.m.

2 stops28h 44m

C$ 1,056

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

Showing 1-10 of 25 resultsSorted by cheapest first
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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 20 hours 7 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 Thursday (46 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (35 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$ 1,099

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, TAP AIR PORTUGAL 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$ 262, however they can be found for as little as C$ 186.

  • 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

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