Cheap flights from London to Australia from £399

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SYD
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Cheap flight deals from London to Australia

Keep the following information in mind while searching for London to Australia flight deals. Data was last updated 18 September 2025.

Round-trip from

£666

One-way from

£399

Popular in

December

Cheapest in

May

Average price

£840

Good round-trip deal

£1,016 or less

Good one-way deal

£917 or less
China Southern
  • China Southern
  • 3/11-10/12
  • 3 total stops
  • 78h 20m total
  • London to Australia
China Eastern
  • China Eastern
  • 11/3
  • 1 total stop
  • 30h 00m total
  • London to Australia
Highest demand for flights based on searches. 9% potential increase in price (£76 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£23 potential savings vs. average return price).
Average for round-trip flights in September 2025
Price to beat on a round-trip flight from London (LON) to Australia.
Price to beat on a one-way flight from London (LON) to Australia.

Find flight deals from London to Australia

Cheapest flights from London to Australia
Explore the most affordable flight options available from London to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Mon 3/1121:30LHR - BNE
2 stops48h 45mChina Southern
Wed 10/1223:00BNE - LHR
1 stop29h 35mChina Southern
Deal found 17/9£666
Sun 2/1122:00LHR - BNE
1 stop24h 15mChina Southern
Sun 9/1110:15BNE - LHR
1 stop42h 20mChina Southern
Deal found 17/9£667
Wed 19/1117:15LHR - BNE
2 stops29h 00mChina Southern
Sun 30/1110:10BNE - LHR
2 stops65h 45mChina Southern
Deal found 17/9£671
Mon 20/1022:10LHR - BNE
1 stop25h 05mChina Southern
Sun 9/1110:10BNE - LHR
1 stop42h 25mChina Southern
Deal found 16/9£672
Fri 31/1021:30LHR - BNE
2 stops48h 45mChina Southern
Thu 13/1110:10BNE - LHR
2 stops41h 45mChina Southern
Deal found 17/9£673
Sun 19/1021:00LHR - BNE
2 stops50h 15mChina Southern
Sun 26/1010:10BNE - LHR
1 stop42h 25mChina Southern
Deal found 17/9£674
Sat 1/1121:30LHR - MEL
2 stops37h 00mChina Southern
Sat 8/1111:25MEL - LHR
2 stops37h 35mChina Southern
Deal found 17/9£674
Thu 25/922:10LHR - BNE
1 stop25h 05mChina Southern
Fri 17/1010:10BNE - LHR
2 stops63h 05mChina Southern
Deal found 17/9£675
Wed 12/1121:30LHR - MEL
2 stops37h 00mChina Southern
Mon 24/1111:25MEL - LHR
2 stops41h 30mChina Southern
Deal found 17/9£675
Wed 26/1121:00LHR - BNE
1 stop26h 00mChina Eastern
Mon 23/211:10BNE - LHR
1 stop40h 20mChina Eastern
Deal found 17/9£676
Fri 31/1010:30LGW - MEL
1 stop36h 30mMultiple Airlines
Fri 7/1115:00MEL - LGW
2 stops29h 10mMultiple Airlines
Deal found 16/9£676
Fri 31/1021:00LHR - MEL
2 stops31h 10mMultiple Airlines
Fri 7/1115:00MEL - LHR
2 stops29h 55mMultiple Airlines
Deal found 16/9£676

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Australia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 18 September 2025.
Use the filters below to find and compare flights from London to Australia that are best for you.

Fly from

London

Fly to

Australia

Route

Depart

Return

Price

LondonBrisbane

LHR - BNE

LHRBNE

London Heathrow

Wed 26/11

17:45-09:00

2 stops29h 15m

Brisbane

Mon 23/2

13:30-14:55

2 stops35h 25m

£683

LondonBrisbane

LHR - BNE

LHRBNE

London Heathrow

Mon 29/9

16:40-10:20

2 stops32h 40m

Brisbane

Wed 22/10

14:45-15:05

2 stops33h 20m

£720

LondonSydney

LGW - SYD

LGWSYD

London Gatwick

Sun 28/9

11:35-08:30

2 stops35h 55m

Sydney Kingsford Smith

Sun 5/10

12:00-15:10

1 stop37h 10m

£726

LondonBrisbane

LHR - BNE

LHRBNE

London Heathrow

Fri 21/11

16:45-09:30

2 stops30h 45m

Brisbane

Thu 11/12

13:00-14:45

2 stops35h 45m

£743

LondonSydney

LGW - SYD

LGWSYD

London Gatwick

Sun 11/1

11:35-15:30

1 stop40h 55m

Sydney Kingsford Smith

Sun 22/2

15:50-05:55

1 stop25h 05m

£817

LondonSydney

STN - SYD

STNSYD

London Stansted

Thu 6/11

20:15-18:35

1 stop35h 20m

Sydney Kingsford Smith

Fri 21/11

06:00-18:00

1 stop23h 00m

£841

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 7/10

21:45-19:00

1 stop35h 15m

Sydney Kingsford Smith

Thu 23/10

20:30-11:30

1 stop25h 00m

£849

LondonPerth

LHR - PER

LHRPER

London Heathrow

Sun 16/11

22:35-01:25

2 stops42h 50m

Perth

Sat 29/11

23:10-14:55

2 stops47h 45m

£852

LondonPerth

LHR - PER

LHRPER

London Heathrow

Thu 30/10

20:15-06:55

1 stop26h 40m

Perth

Wed 5/11

00:25-17:20

1 stop24h 55m

£862

LondonPerth

LHR - PER

LHRPER

London Heathrow

Fri 6/3

17:50-06:55

1 stop29h 05m

Perth

Sat 21/3

08:30-05:25

1 stop28h 55m

£862

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 60 results
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Best time to book a flight from London to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Australia

What is the cheapest month to book a flight from London to Australia?

Currently, May is the cheapest month in which you can book a flight from London to Australia (average of £985). Flying from London to Australia in July is currently the most expensive (average of £1,726). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to AU?

Find hourly flight availability from London to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 September 2025.

When flying from London to Australia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London to Australia

Explore weekly flight availability from London to Australia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 18 September 2025.

The most flights from LON to AU0 are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Australia. Reviews last updated 18 September 2025.
See what other customers who have flown with Emirates, Singapore Airlines, andCathay Pacific from London to Australia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.9

Crew

8.3

Overall

8.1

Boarding

8.1

Comfort

8.0

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Steven,Feb 2025

GLA - DXB

Although I was in economy it made no difference where the staff were concerned they were attentive and pleasant throughout the flight maybe one day I'll get the chance to see if there's a difference in business or 1st class service but in truth for the way I was treated I can only see the menu being an upgrade as the staff don't need upgrading and are indeed the biggest asset on a long journey a credit to the company.

Food

7.9

Crew

8.3

Overall

8.1

Boarding

8.1

Comfort

8.0

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Steven,Feb 2025

GLA - DXB

Although I was in economy it made no difference where the staff were concerned they were attentive and pleasant throughout the flight maybe one day I'll get the chance to see if there's a difference in business or 1st class service but in truth for the way I was treated I can only see the menu being an upgrade as the staff don't need upgrading and are indeed the biggest asset on a long journey a credit to the company.

Food

7.9

Crew

8.3

Overall

8.1

Boarding

8.1

Comfort

8.0

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Steven,Feb 2025

GLA - DXB

Although I was in economy it made no difference where the staff were concerned they were attentive and pleasant throughout the flight maybe one day I'll get the chance to see if there's a difference in business or 1st class service but in truth for the way I was treated I can only see the menu being an upgrade as the staff don't need upgrading and are indeed the biggest asset on a long journey a credit to the company.

Food

7.9

Crew

8.3

Overall

8.1

Boarding

8.1

Comfort

8.0

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Steven,Feb 2025

GLA - DXB

Although I was in economy it made no difference where the staff were concerned they were attentive and pleasant throughout the flight maybe one day I'll get the chance to see if there's a difference in business or 1st class service but in truth for the way I was treated I can only see the menu being an upgrade as the staff don't need upgrading and are indeed the biggest asset on a long journey a credit to the company.

Food

7.9

Crew

8.3

Overall

8.1

Boarding

8.1

Comfort

8.0

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Steven,Feb 2025

GLA - DXB

Although I was in economy it made no difference where the staff were concerned they were attentive and pleasant throughout the flight maybe one day I'll get the chance to see if there's a difference in business or 1st class service but in truth for the way I was treated I can only see the menu being an upgrade as the staff don't need upgrading and are indeed the biggest asset on a long journey a credit to the company.

Food

7.9

Crew

8.3

Overall

8.1

Boarding

8.1

Comfort

8.0

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Steven,Feb 2025

GLA - DXB

Although I was in economy it made no difference where the staff were concerned they were attentive and pleasant throughout the flight maybe one day I'll get the chance to see if there's a difference in business or 1st class service but in truth for the way I was treated I can only see the menu being an upgrade as the staff don't need upgrading and are indeed the biggest asset on a long journey a credit to the company.

Related info for your journey

Find useful and relevant information for your journey from London to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How long is the flight from London to Australia?

    For as low as £720, Turkish Airlines can have you in Australia from London in 32h 40m. Airlines will cover a distance of 10273 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from London to Australia one-way?

    The cheapest airline one-way is China Southern, with whom users have recently found tickets for as low as £413. However, be on the lookout for offers from China Eastern and SWISS, as they are both options that can get you from London to Australia for a low price.

  • What are the most popular routes from London to Australia?

  • What are the cheapest flights from London to Australia?

    Looking at all options, your cheapest flight can be booked for £839. While the most popular route (London Heathrow - Sydney Kingsford Smith) can be booked for £537 on average, our data indicates £4,240 when flying from London to Australia.

  • Can I find deals for flights from London to Australia that include hotel bookings?

    Yes. In addition to deals on London to Australia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Australia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Australia.

  • Can I find deals for business class flights from London to Australia?

    Yes. Cheapflights offers flight deals from London to Australia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London to Australia?

    Currently, May is the cheapest month in which you can book a flight from London to Australia (average of £985). Flying from London to Australia in July is currently the most expensive (average of £1,726). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

  • What are the most eco-friendly airlines from London to Australia?

    As a frequent flyer, you might want to help keep the planet clean by flying green via flights that have advanced mechanisms to reduce aviation emissions. Some of the best eco-friendly airlines to Australia from London include Virgin Atlantic, Alitalia, Air France, Air India, Delta Airlines, and more. These airlines engage in carbon offset programs that contribute to the neutralisation of emissions from flights. Ozone-friendly air passenger carriers engage in renewable energy projects that help reduce the climate impact of your flight. Air services such as Delta Airlines use biofuels which are more ozone-friendly than jet fuel. However, these possibilities are more achievable when you decide to use eco-friendly airlines as your means of transport every time. Furthermore, some airlines permit travellers to participate in funding the advancement of sustainable air fuels.

  • How can I fly more sustainably from London to Australia?

    We can help you book your sustainable travel through this platform. Additionally, we supply you with all the information you need to know about eco-friendly flights. You can minimise your carbon footprint by flying non-polluting commuter airlines. Newer and bigger planes have invested in promoting clean air travel technologies that help reduce carbon emissions. Of course, you can help your carbon footprint by travelling light and packing less. The plane will save more fuel if every passenger on your flight carries 1-2kg less language. Airlines can fly greener by reducing fuel consumption. Additionally, you can fly more sustainably to Australia from London by air shuttles that have removed all single-use plastic items from the flights. While onboard your flight, you may also want to select environmentally-friendly snacks.

See more FAQs

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Alternative routes for London to Australia

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from London to Australia

Discover the top 10 airlines that operate flights from London to Australia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 18 September 2025.
AirlineCheapestAverageFlexibilityOn-time
AirAsiaCheapest£126Average£174FlexibilityNo cancel feeOn-time66%
Search AirAsia flights
Beijing Capital AirlinesCheapest£322Average£723FlexibilityNo cancel feeOn-timeN/A
Search Beijing Capital Airlines flights
Hainan AirlinesCheapest£330Average£966FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Oman AirCheapest£487Average£1,363FlexibilityNo cancel feeOn-time76%
Search Oman Air flights
Royal Brunei AirlinesCheapest£632Average£758FlexibilityNo cancel feeOn-time84%
Search Royal Brunei Airlines flights
Vietnam AirlinesCheapest£725Average£1,080FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
SWISSCheapest£726Average£983FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Austrian AirlinesCheapest£731Average£828FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Air FranceCheapest£743Average£1,137FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air New ZealandCheapest£754Average£1,176FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Australia?

Cheapflights makes it easy to find London to Australia flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from London to Australia?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from London to Australia.

Can Cheapflights find flights from London to Australia with no change fees?

Yes, we can. To see specific flights from London to Australia with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from London to Australia become cheaper?

Not ready to book yet? You can track prices for flights from London to Australia on Cheapflights with our Price Alert feature and get notified when better prices are available.

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