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Cheap flights from London to Australia from $821

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 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SYD
10 Sep — 17 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Australia

Enter your travel dates to find the best prices.

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 11 August 2026.

Fri 30/1021:10 -
1 stop28h 50m
Fri 20/1122:15 -
1 stop31h 55m
Deal found 10/8$1,432
Thu 27/821:55 -
1 stop29h 45m
Sat 5/921:30 -
1 stop26h 30m
Deal found 10/8$1,433
Fri 9/1022:10 -
1 stop36h 10m
Wed 28/1011:25 -
1 stop42h 10m
Deal found 10/8$1,437
Sat 12/922:00 -
1 stop26h 00m
Mon 28/912:00 -
2 stops51h 40m
Deal found 10/8$1,437
Fri 30/1021:10 -
1 stop28h 50m
Wed 18/1118:20 -
1 stop28h 45m
Deal found 10/8$1,439
Tue 27/1010:30 -
1 stop40h 35m
Wed 18/1112:00 -
1 stop29h 30m
Deal found 10/8$1,439
Sun 25/1021:10 -
1 stop28h 50m
Sun 22/1122:15 -
1 stop31h 55m
Deal found 10/8$1,440
Tue 8/921:30 -
2 stops50h 10m
Tue 29/910:20 -
1 stop29h 10m
Deal found 10/8$1,440
Fri 28/822:05 -
1 stop28h 55m
Mon 14/921:10 -
1 stop31h 10m
Deal found 10/8$1,443
Wed 26/822:00 -
1 stop26h 00m
Thu 3/912:00 -
2 stops36h 00m
Deal found 10/8$1,444
Wed 21/1022:05 -
1 stop28h 55m
Fri 20/1122:15 -
1 stop31h 55m
Deal found 10/8$1,446
Mon 17/811:35 -
1 stop36h 25m
Tue 8/921:30 -
1 stop30h 40m
Deal found 10/8$1,454

Find flight deals from London to Australia

Keep the following information in mind while searching for London to Australia flight deals. Data was last updated 11 August 2026.

Round-trip from

$1,432

One-way from

$821

Popular in

December

Cheapest in

May

Average price

$2,116

Good round-trip deal

$2,256 or less

Good one-way deal

$2,776 or less
China Southern
  • China Southern
  • 30/10-6/11
  • 4 total stops
  • 110h 50m total
  • London to Australia
Search Deals
China Southern
  • China Southern
  • 5/9
  • 1 total stop
  • 36h 10m total
  • London to Australia
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($218 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($102 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from London (LON) to Australia.
Search Deals
Price to beat on a one-way flight from London (LON) to Australia.
Search Deals

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 647,157 searches. Data last updated 11 August 2026.
Use the filters below to find and compare flights from London to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonMelbourne

LGW London Gatwick - MEL Melbourne

LGWMEL

London Gatwick

Sun 1/11

17:00-14:05

1 stop34h 05m

Melbourne

Sun 22/11

12:00-06:30

1 stop29h 30m

$1,590

LondonSydney

LHR London Heathrow - SYD Sydney Kingsford Smith

LHRSYD

London Heathrow

Tue 22/9

19:30-10:20

2 stops29h 50m

Sydney Kingsford Smith

Wed 7/10

15:35-08:20

2 stops26h 45m

$1,691

LondonMelbourne

LHR London Heathrow - MEL Melbourne

LHRMEL

London Heathrow

Thu 19/11

18:10-07:20

2 stops26h 10m

Melbourne

Sat 27/2

15:30-09:10

2 stops28h 40m

$1,797

LondonPerth

LHR London Heathrow - PER Perth

LHRPER

London Heathrow

Wed 23/9

06:30-22:55

2 stops33h 25m

Perth

Tue 13/10

00:45-21:05

2 stops27h 20m

$1,814

LondonMelbourne

LGW London Gatwick - MEL Melbourne

LGWMEL

London Gatwick

Mon 7/9

17:35-19:40

2 stops41h 05m

Melbourne

Mon 21/9

21:35-22:25

2 stops33h 50m

$1,822

LondonPerth

LHR London Heathrow - PER Perth

LHRPER

London Heathrow

Sun 8/11

08:25-01:25

2 stops33h 00m

Perth

Thu 12/11

16:15-18:25

2 stops34h 10m

$1,827

LondonPerth

LHR London Heathrow - PER Perth

LHRPER

London Heathrow

Sat 7/11

20:05-01:25

2 stops45h 20m

Perth

Tue 10/11

16:15-18:25

2 stops34h 10m

$1,852

LondonMelbourne

LHR London Heathrow - MEL Melbourne

LHRMEL

London Heathrow

Thu 14/1

06:25-20:40

2 stops27h 15m

Melbourne

Mon 1/2

22:35-16:20

2 stops28h 45m

$1,872

LondonMelbourne

LGW London Gatwick - MEL Melbourne

LGWMEL

London Gatwick

Thu 24/12

08:40-23:20

1 stop27h 40m

Melbourne

Tue 26/1

17:10-05:55

1 stop23h 45m

$1,882

LondonSydney

LHR London Heathrow - SYD Sydney Kingsford Smith

LHRSYD

London Heathrow

Tue 2/2

09:25-19:20

1 stop22h 55m

Sydney Kingsford Smith

Mon 8/2

15:50-07:20

1 stop26h 30m

$1,897

Flights are sorted by cheapest return flights first.

Deals found on 10/8

Showing 1-10 of 60 resultsSorted by cheapest first
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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 $1,745). Flying from London to Australia in December is currently the most expensive (average of $2,638). 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 11 August 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Australia as you normally would.

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 11 August 2026.

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).

How often are flights from London to Australia delayed?

About 25% of weekly flights between London and Australia have experienced delays in the past year, with the average delay time being 128 minutes.

What is the most punctual flight time for London to Australia flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Australia flights?

Over the past year, Qantas Airways have had the lowest number of delays on this route, with just 25% of flights being delayed.

How far ahead should I book a flight from London to Australia?

The best time to book flights from London to Australia is 48 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 11 August 2026.
Read through reviews of airlines operating flights from London to Australia, such as Singapore Airlines,Qatar Airways, andEtihad Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Boarding

8.3

Food

7.8

Overall

8.2

Crew

8.6

Entertainment

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Singapore Airlines
8.2
Very Good
1,584 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Boarding

8.3

Food

7.8

Overall

8.2

Crew

8.6

Entertainment

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Qatar Airways
7.4
Good
3,741 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Boarding

8.3

Food

7.8

Overall

8.2

Crew

8.6

Entertainment

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Etihad Airways
7.3
Good
1,502 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Boarding

8.3

Food

7.8

Overall

8.2

Crew

8.6

Entertainment

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
China Southern
7.3
Good
173 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Boarding

8.3

Food

7.8

Overall

8.2

Crew

8.6

Entertainment

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
China Eastern
7.3
Good
232 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Boarding

8.3

Food

7.8

Overall

8.2

Crew

8.6

Entertainment

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.

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?

    A quick flight from London to Australia can take about 26h 10m. China Eastern provides one of the quickest options available for as low as $1,797. London and Australia are separated by a distance of 16897 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    The cheapet airlines for a one-way flight from London to Australia are Air China ($622), China Southern ($673), and China Eastern ($697).

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

    When deciding which route to take from London to Australia, consider London Heathrow - Sydney Kingsford Smith, London Gatwick - Sydney Kingsford Smith or London Stansted - Sydney Kingsford Smith, as they are the most popular.

  • What are the cheapest flights from London to Australia?

    While on average a flight from London to Australia is generally $3,089, our data shows the cheapest flight currently is $2,577. When looking at the most popular route, (London Heathrow - Sydney Kingsford Smith), you can expect to pay $1,245 for that flight.

  • 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 $1,745). Flying from London to Australia in December is currently the most expensive (average of $2,638). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 647,157 searches. Data last updated 11 August 2026.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest$854Average$1,519FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air IndiaCheapest$1,178Average$2,039FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Singapore AirlinesCheapest$1,236Average$2,214FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
China EasternCheapest$1,238Average$1,568FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Etihad AirwaysCheapest$1,288Average$2,042FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Qatar AirwaysCheapest$1,384Average$2,358FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Qantas AirwaysCheapest$1,450Average$2,537FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Cathay PacificCheapest$1,475Average$2,055FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Malaysia AirlinesCheapest$1,549Average$2,549FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
EmiratesCheapest$1,702Average$1,984FlexibilityNo cancel feeOn-time75%
Search Emirates 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 goes through 900+ travel sites to look for the best flight deals for flights from London to Australia. 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 from London to Australia?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to Australia for you. Better yet — we are completely free to use.

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

Certainly. Search results for flights to Australia from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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