$1,362+ 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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
13 Feb — 20 Feb1
1 adult
1 adult, Economy, 0 bags

Flights to Portsmouth in 2026

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 14 January 2026.

Return from

$1,553

One-way from

$1,362

Popular in

December

Cheapest in

February

Average price

$2,101
China Eastern
  • China Eastern
  • 22/6-7/7
  • 3 total stops
  • 65h 40m total
  • Sydney to London
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Qatar Airways
  • Qatar Airways
  • 15/3
  • 2 total stops
  • 34h 45m total
  • Sydney to Portsmouth
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($212 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($56 potential savings vs. average return price).
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Average for return flights in January 2026
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Find flight deals to Portsmouth

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 14 January 2026.

Fri 27/206:00
SYD
-
SOU
2 stops45h 45m
Multiple Airlines
Fri 6/312:00
SOU
-
SYD
2 stops43h 35m
Multiple Airlines
Deal found 13/1$2,242
Sat 28/220:05
SYD
-
SOU
3 stops32h 40m
Multiple Airlines
Sat 7/315:25
SOU
-
SYD
2 stops28h 10m
Multiple Airlines
Deal found 13/1$2,360
Sun 8/215:50
SYD
-
SOU
2 stops38h 50m
Qatar Airways
Mon 9/309:30
SOU
-
SYD
2 stops34h 20m
Qatar Airways
Deal found 14/1$2,586
Sun 8/315:50
SYD
-
SOU
2 stops38h 50m
Qatar Airways
Thu 12/309:30
SOU
-
SYD
2 stops34h 20m
Qatar Airways
Deal found 12/1$2,590
Thu 26/221:40
SYD
-
SOU
2 stops33h 00m
Qatar Airways
Mon 9/309:30
SOU
-
SYD
2 stops34h 20m
Qatar Airways
Deal found 13/1$2,598
Tue 24/221:40
SYD
-
SOU
2 stops52h 55m
Qatar Airways
Mon 9/309:30
SOU
-
SYD
2 stops34h 20m
Qatar Airways
Deal found 13/1$2,601
Thu 26/221:40
SYD
-
SOU
2 stops33h 00m
Qatar Airways
Wed 11/312:25
SOU
-
SYD
2 stops55h 25m
Qatar Airways
Deal found 13/1$2,613
Tue 24/221:40
SYD
-
SOU
2 stops52h 55m
Qatar Airways
Wed 11/312:25
SOU
-
SYD
2 stops55h 25m
Qatar Airways
Deal found 13/1$2,616

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 14 January 2026.
Use the filters below to find and compare flights to Portsmouth that are best for you.

Fly from

Sydney

Route

Depart

Return

Price

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Fri 27/2

06:00-16:45

2 stops45h 45m

Southampton Eastleigh

Fri 6/3

12:00-18:35

2 stops43h 35m

$2,242

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Sat 28/2

20:05-17:45

3 stops32h 40m

Southampton Eastleigh

Sat 7/3

15:25-06:35

2 stops28h 10m

$2,360

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Sun 8/3

15:50-19:40

2 stops38h 50m

Southampton Eastleigh

Thu 12/3

09:30-06:50

2 stops34h 20m

$2,586

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Thu 26/2

21:40-19:40

2 stops33h 00m

Southampton Eastleigh

Tue 10/3

12:25-06:50

2 stops31h 25m

$2,598

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Thu 26/2

21:40-19:40

2 stops33h 00m

Southampton Eastleigh

Mon 9/3

09:30-06:50

2 stops34h 20m

$2,598

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Wed 25/2

21:40-19:40

2 stops57h 00m

Southampton Eastleigh

Sun 8/3

09:30-06:50

2 stops34h 20m

$2,601

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Thu 26/2

21:40-19:40

2 stops33h 00m

Southampton Eastleigh

Wed 11/3

12:25-06:50

2 stops55h 25m

$2,613

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Sun 15/3

15:50-15:35

2 stops34h 45m

$1,362

SydneySouthampton

SYD - SOU

SYDSOU

Sydney Kingsford Smith

Fri 1/5

14:50-09:45

2 stops27h 55m

$1,639

Flights are sorted by cheapest return flights first.

Deals found on 13/1

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 33 hours 0 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 Monday, which is when the least amount of flights are scheduled (3 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, Japan Airlines 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 $797, however they can be found for as little as $192.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, Brisbane offers the quickest one-way flight (27 hours 35 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. Aerotel London Heathrow is the closest property to London Heathrow (0.0 km away from London Heathrow).

See more FAQs

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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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