$1,386+ 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 14/7. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
12 Jul — 19 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 12 June 2026.

Mon 27/720:50
SYD
-
SOU
2 stops44h 15m
Multiple Airlines
Mon 3/817:20
SOU
-
SYD
2 stops27h 50m
Multiple Airlines
Deal found 11/6$2,197
Fri 24/715:40
SYD
-
SOU
2 stops49h 55m
Multiple Airlines
Fri 31/717:20
SOU
-
SYD
2 stops27h 50m
Multiple Airlines
Deal found 8/6$2,248
Wed 11/1115:50
SYD
-
SOU
2 stops38h 40m
Qatar Airways
Sun 15/1109:20
SOU
-
SYD
2 stops34h 30m
Qatar Airways
Deal found 11/6$2,415
Thu 19/1115:50
SYD
-
SOU
2 stops38h 40m
Qatar Airways
Mon 23/1109:20
SOU
-
SYD
2 stops34h 30m
Qatar Airways
Deal found 7/6$2,421
Wed 5/814:50
SYD
-
SOU
2 stops37h 40m
Qatar Airways
Wed 19/809:20
SOU
-
SYD
2 stops35h 50m
Qatar Airways
Deal found 9/6$2,536
Tue 14/714:50
SYD
-
SOU
2 stops37h 40m
Qatar Airways
Mon 27/709:20
SOU
-
SYD
2 stops35h 50m
Qatar Airways
Deal found 12/6$2,887
Tue 14/714:50
SYD
-
SOU
2 stops37h 40m
Qatar Airways
Sun 26/720:00
SOU
-
SYD
2 stops49h 10m
Qatar Airways
Deal found 12/6$2,891
Tue 14/714:50
SYD
-
SOU
2 stops37h 40m
Qatar Airways
Wed 29/709:20
SOU
-
SYD
2 stops35h 50m
Qatar Airways
Deal found 12/6$2,953
Tue 14/714:50
SYD
-
SOU
2 stops37h 40m
Qatar Airways
Sat 25/709:20
SOU
-
SYD
2 stops35h 50m
Qatar Airways
Deal found 12/6$2,994

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 647,157 searches and data was last updated on 12 June 2026.

Return from

$1,619

One-way from

$1,386

Popular in

December

Cheapest in

February

Average price

$2,071
30/7-12/8
  • 30/7-12/8
  • 2 total stops
  • 68h 10m total
  • Sydney to London
Search Deals
Qatar Airways
  • Qatar Airways
  • 14/7
  • 2 total stops
  • 37h 40m total
  • Sydney to Portsmouth
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($147 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($51 potential savings vs. average return price).
Search Deals
Average for return flights in June 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 647,157 searches and data was last updated on 12 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 return flight

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Fri 24/7

15:40-08:35

2 stops49h 55m

Southampton Eastleigh

Fri 31/7

17:20-06:10

2 stops27h 50m

$2,248
Fastest return journey

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Wed 11/11

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Sun 15/11

09:20-06:50

2 stops34h 30m

$2,415

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Thu 19/11

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Mon 23/11

09:20-06:50

2 stops34h 30m

$2,421

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Wed 5/8

14:50-19:30

2 stops37h 40m

Southampton Eastleigh

Wed 19/8

09:20-06:10

2 stops35h 50m

$2,536

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Thu 16/7

20:45-19:30

2 stops55h 45m

Southampton Eastleigh

Tue 21/7

09:15-06:10

2 stops35h 55m

$3,406

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Thu 9/7

20:45-19:30

2 stops55h 45m

Southampton Eastleigh

Sun 26/7

20:00-06:10

2 stops49h 10m

$3,508

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Thu 9/7

20:45-19:30

2 stops55h 45m

Southampton Eastleigh

Thu 23/7

17:20-06:10

2 stops27h 50m

$3,903

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Sat 4/7

20:45-19:30

2 stops55h 45m

Southampton Eastleigh

Wed 22/7

09:20-06:10

2 stops35h 50m

$3,940
Cheapest one-way
Fastest single journey

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Thu 1/10

14:50-19:30

2 stops37h 40m

$1,394

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Wed 30/9

14:50-19:30

2 stops37h 40m

$1,394

Flights are sorted by cheapest return flights first.

Deals found on 8/6

Showing 1-10 of 20 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 return 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 Sydney to Portsmouth takes 37 hours 40 minutes. Flights to Portsmouth from other popular cities in Australia 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 Sydney to Portsmouth are scheduled on a Monday (3 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

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 stopovers?

    Yes, flights with stopovers 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, AirAsia X is rated the highest out of the airlines that fly to Portsmouth.

  • How much is a return flight to Portsmouth?

    A return flight to Portsmouth will typically cost around $377, however they can be found for as little as $296.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, Perth offers the quickest one-way flight (25 hours 50 minutes).

  • Does London Heathrow have car hire?

    Yes. Those touching down at London Heathrow can take advantage of the car hire 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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Fly with Cheapflights

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How does Cheapflights help users find flights to Portsmouth?

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Why should you use Cheapflights to find cheap flight tickets to Portsmouth?

Cheapflights helps you find that perfect flight to Portsmouth by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights to Portsmouth with no change fees?

Need flexible booking options for your flight to Portsmouth ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights to Portsmouth become cheaper?

Yes, Cheapflights has a feature called Price Alerts, which notifies users when flight prices change. Track prices for your flight to Portsmouth today and book when you’re ready!

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