$1,379+ Cheap flights to Portsmouth

— LHR
27 Sep — 4 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 24/8$2,599
Thu 12/1115:50 -
2 stops38h 40m
Mon 16/1109:20 -
2 stops34h 30m
Deal found 27/8$2,608
Sun 25/1015:50 -
2 stops38h 40m
Thu 28/120:00 -
2 stops47h 50m
Deal found 24/8$2,809
Tue 27/1022:10 -
2 stops56h 20m
Thu 28/120:00 -
2 stops47h 50m
Deal found 24/8$2,822
Sun 25/1015:50 -
2 stops38h 40m
Fri 29/109:20 -
2 stops34h 30m
Deal found 24/8$2,849
Sat 31/1015:50 -
2 stops38h 40m
Thu 28/120:00 -
2 stops47h 50m
Deal found 24/8$2,853
Tue 27/1022:10 -
2 stops56h 20m
Sat 30/109:20 -
2 stops34h 30m
Deal found 24/8$2,863
Fri 30/1022:10 -
2 stops56h 20m
Thu 28/120:00 -
2 stops47h 50m
Deal found 24/8$2,866
Sat 31/1015:50 -
2 stops38h 40m
Sat 30/109:20 -
2 stops34h 30m
Deal found 24/8$2,892
Wed 28/1015:50 -
2 stops38h 40m
Wed 27/108:55 -
2 stops47h 25m
Deal found 24/8$2,903

Find flight deals to Portsmouth

Return from

$1,427

One-way from

$1,379

Popular in

December

Cheapest in

February

Average price

$1,806
China Eastern
  • China Eastern
  • 19/10-3/11
  • 4 total stops
  • 90h 45m total
  • Sydney to London
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Qatar Airways
  • Qatar Airways
  • 25/10
  • 2 total stops
  • 38h 40m total
  • Sydney to Portsmouth
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($124 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 August 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

Mon 25/1

22:10-08:40

2 stops45h 30m

Southampton Eastleigh

Mon 8/2

20:00-18:20

2 stops35h 20m

$2,590

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

$2,599

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

$2,608

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Sat 31/10

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Sun 24/1

09:20-06:50

2 stops34h 30m

$3,044

SydneySouthampton

SYD Sydney Kingsford Smith - SOU Southampton Eastleigh

SYDSOU

Sydney Kingsford Smith

Tue 24/11

15:50-19:30

2 stops38h 40m

Southampton Eastleigh

Sat 9/1

09:20-06:50

2 stops34h 30m

$3,052

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

$3,073

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

$3,083

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

$3,176

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

$3,237

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

$3,261

Flights are sorted by cheapest return flights first.

Deals found on 24/8

Showing 1-10 of 17 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 38 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 (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 $264, however they can be found for as little as $243.

  • 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. 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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