$1,807+ Cheap flights to Portsmouth

— LHR
14 Oct — 21 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

Sun 11/1016:40 -
2 stops50h 00m
Sun 18/1017:20 -
2 stops27h 15m
Deal found 10/9$2,011
Thu 12/1115:50 -
2 stops38h 40m
Sun 15/1109:20 -
2 stops34h 30m
Deal found 13/9$2,050
Sun 25/1016:50 -
2 stops30h 05m
Sun 1/1120:00 -
2 stops47h 30m
Deal found 10/9$2,120
Sun 25/1022:15 -
2 stops44h 55m
Sun 1/1117:30 -
3 stops39h 45m
Deal found 10/9$2,930
Tue 1/1215:50 -
2 stops38h 40m
Thu 21/109:20 -
2 stops34h 30m
Deal found 14/9$3,389
Tue 1/1215:50 -
2 stops38h 40m
Wed 20/112:20 -
2 stops55h 30m
Deal found 14/9$3,405
Wed 2/1215:50 -
2 stops31h 05m
Fri 22/120:00 -
2 stops35h 20m
Deal found 14/9$3,417

Find flight deals to Portsmouth

Return from

$1,369

One-way from

$1,807

Popular in

December

Cheapest in

February

Average price

$2,100
China Southern
  • China Southern
  • 6/11-22/11
  • 2 total stops
  • 62h 45m total
  • Sydney to London
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Qatar Airways
  • Qatar Airways
  • 17/9-31/12
  • 2 total stops
  • 55h 45m total
  • Sydney to Portsmouth
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($138 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease ($52 potential savings vs. average return price).
Search Deals
Average for return flights in September 2026
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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 17/9

20:45-19:30

2 stops55h 45m

Southampton Eastleigh

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,807

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Sun 11/10

16:40-08:40

2 stops50h 00m

Southampton Eastleigh

Sun 18/10

17:20-06:35

2 stops27h 15m

$2,011

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

$2,050

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Sat 19/9

20:45-19:30

2 stops55h 45m

Southampton Eastleigh

Wed 31/12

00:00-09:00

Nonstop0h 00m

$2,259

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Sun 25/10

16:20-14:45

3 stops33h 25m

Southampton Eastleigh

Sun 1/11

20:50-06:55

3 stops47h 05m

$2,307

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Tue 1/12

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Tue 19/1

12:20-06:50

2 stops31h 30m

$3,389

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Tue 1/12

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Thu 21/1

09:20-06:50

2 stops34h 30m

$3,389

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Fri 4/12

22:10-19:30

2 stops56h 20m

Southampton Eastleigh

Sun 20/12

20:50-18:20

2 stops34h 30m

$3,463

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Sun 6/12

22:10-19:30

2 stops32h 20m

Southampton Eastleigh

Tue 29/12

09:20-06:50

2 stops34h 30m

$3,490

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Sun 6/12

22:10-19:30

2 stops32h 20m

Southampton Eastleigh

Thu 31/12

09:20-06:50

2 stops34h 30m

$3,490

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 13 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 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 30 hours 5 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 Friday (4 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

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 $257, however they can be found for as little as $257.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, Sydney Kingsford Smith offers the quickest one-way flight (30 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

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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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