$1,385+ Cheap flights to Portsmouth

— LHR
3 Oct — 10 Oct1
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

Thu 12/1115:50 -
2 stops38h 40m
Sun 15/1109:20 -
2 stops34h 30m
Deal found 1/9$2,052
Thu 12/1115:50 -
2 stops38h 40m
Mon 16/1109:20 -
2 stops34h 30m
Deal found 31/8$2,610
Sat 19/914:50 -
2 stops37h 40m
Tue 13/1009:15 -
2 stops35h 55m
Deal found 31/8$3,652
Tue 24/1122:10 -
2 stops32h 20m
Fri 15/120:00 -
2 stops59h 20m
Deal found 2/9$11,772
Fri 4/1222:10 -
2 stops56h 20m
Sun 20/1220:00 -
2 stops35h 20m
Deal found 31/8$12,764

Find flight deals to Portsmouth

Return from

$1,437

One-way from

$1,385

Popular in

December

Cheapest in

February

Average price

$2,080
Air China
  • Air China
  • 22/10-4/11
  • 2 total stops
  • 61h 10m total
  • Sydney to London
Search Deals
Qatar Airways
  • Qatar Airways
  • 18/10
  • 2 total stops
  • 37h 40m total
  • Sydney to Portsmouth
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($130 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($50 potential savings vs. average return price).
Search Deals
Average for return flights in September 2026
Search Deals

Cheapflights Fare Finder

 
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 Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Thu 12/11

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Sun 15/11

09:20-06:50

2 stops34h 30m

$2,052

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Mon 1/3

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Wed 31/3

09:20-06:25

2 stops35h 05m

$2,449

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Thu 11/2

15:50-11:55

2 stops31h 05m

Southampton Eastleigh

Thu 4/3

20:00-18:20

2 stops35h 20m

$2,595
Fastest return journey

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Mon 25/1

15:50-11:50

2 stops31h 00m

Southampton Eastleigh

Mon 8/2

20:00-18:20

2 stops35h 20m

$2,596

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Thu 12/11

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Mon 16/11

09:20-06:50

2 stops34h 30m

$2,610

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Wed 10/2

22:10-19:30

2 stops32h 20m

Southampton Eastleigh

Thu 4/3

09:20-06:50

2 stops34h 30m

$2,612

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Sun 14/2

22:10-19:30

2 stops32h 20m

Southampton Eastleigh

Thu 4/3

09:20-06:50

2 stops34h 30m

$2,612

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Mon 1/3

22:10-19:30

2 stops32h 20m

Southampton Eastleigh

Mon 29/3

09:20-06:25

2 stops35h 05m

$2,651

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Mon 1/3

22:10-19:30

2 stops32h 20m

Southampton Eastleigh

Sat 27/3

09:20-06:25

2 stops34h 05m

$2,693
Cheapest one-way

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Tue 20/10

15:50-19:30

2 stops37h 40m

$1,385

Flights are sorted by cheapest return flights first.

Deals found on 2/9

Showing 1-10 of 16 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

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 31 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 (4 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Portsmouth 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

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, Virgin Australia 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 $265, however they can be found for as little as $244.

  • 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 5 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

Browse thousands of different options on Cheapflights for your next trip

Search flights to Portsmouth by cabin class

First Class flights to Portsmouth
Business Class flights to Portsmouth
Prem Economy Class flights to Portsmouth
Economy Class flights to Portsmouth

Fly with Cheapflights

How does Cheapflights help users find flights to Portsmouth?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights to Portsmouth. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.