$1,374+ Cheap flights to Portsmouth

— LHR
24 Sep — 1 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
Mon 16/1109:20 -
2 stops34h 30m
Deal found 20/8$2,598
Thu 12/1115:50 -
2 stops38h 40m
Sun 15/1109:20 -
2 stops34h 30m
Deal found 24/8$2,609
Sun 25/1015:50 -
2 stops38h 40m
Thu 28/120:00 -
2 stops47h 50m
Deal found 24/8$2,820
Tue 27/1022:10 -
2 stops56h 20m
Thu 28/120:00 -
2 stops47h 50m
Deal found 24/8$2,834
Sun 25/1015:50 -
2 stops38h 40m
Fri 29/109:20 -
2 stops34h 30m
Deal found 24/8$2,860
Sat 31/1015:50 -
2 stops38h 40m
Thu 28/120:00 -
2 stops47h 50m
Deal found 24/8$2,865
Tue 27/1022:10 -
2 stops56h 20m
Sat 30/109:20 -
2 stops34h 30m
Deal found 24/8$2,874
Fri 30/1022:10 -
2 stops56h 20m
Thu 28/120:00 -
2 stops47h 50m
Deal found 24/8$2,877
Sat 31/1015:50 -
2 stops38h 40m
Sat 30/109:20 -
2 stops34h 30m
Deal found 24/8$2,904
Wed 28/1015:50 -
2 stops38h 40m
Wed 27/108:55 -
2 stops47h 25m
Deal found 24/8$2,915

Find flight deals to Portsmouth

Return from

$1,434

One-way from

$1,374

Popular in

December

Cheapest in

February

Average price

$1,813
11/11-25/11
  • 11/11-25/11
  • 4 total stops
  • 67h 30m total
  • Sydney to London
Search Deals
22/10
  • 22/10
  • 2 total stops
  • 31h 45m total
  • Sydney to Portsmouth
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($125 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($49 potential savings vs. average return price).
Search Deals
Average for return flights in August 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
Fastest return journey

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

$2,598

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Mon 25/1

22:10-08:40

2 stops45h 30m

Southampton Eastleigh

Mon 8/2

20:00-18:20

2 stops35h 20m

$2,601

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Fri 30/10

22:10-19:30

2 stops56h 20m

Southampton Eastleigh

Sat 30/1

09:20-06:50

2 stops34h 30m

$2,918

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Tue 24/11

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Wed 6/1

09:20-06:50

2 stops34h 30m

$3,085

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Mon 23/11

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Thu 7/1

20:00-19:20

2 stops36h 20m

$3,095

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Tue 24/11

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Thu 7/1

20:00-19:20

2 stops36h 20m

$3,095

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Wed 25/11

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Fri 8/1

20:00-06:50

2 stops47h 50m

$3,189

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Sat 21/11

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Mon 4/1

09:20-06:50

2 stops34h 30m

$3,250

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Fri 20/11

22:10-19:30

2 stops56h 20m

Southampton Eastleigh

Thu 7/1

20:00-19:20

2 stops36h 20m

$3,274

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Sun 6/12

22:10-16:35

2 stops29h 25m

Southampton Eastleigh

Sat 19/12

10:15-18:20

2 stops45h 05m

$3,420

Flights are sorted by cheapest return flights first.

Deals found on 21/8

Showing 1-10 of 20 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 28 hours 55 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 $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 (28 hours 45 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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