Cheap flights to Portsmouth

— LHR
24 Oct — 31 Oct1
1 adult
1 adult, Economy, 0 bags

Find flight deals to Portsmouth

Return from

$1,429

Popular in

December

Cheapest in

February

Average price

$2,107
China Eastern
  • China Eastern
  • 13/11-27/11
  • 4 total stops
  • 72h 30m total
  • Sydney to London
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($154 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($55 potential savings vs. average return price).
Search Deals
Average for return flights in September 2026
Search Deals

Cheapflights Insights

Everything you need to know about your flight to Portsmouth

Weekly flight availability to Portsmouth

The most flights from Sydney to Portsmouth are scheduled on a Tuesday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

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 $180, however they can be found for as little as $180.

  • 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 (27 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

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.