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Cheap flights from London to Australia from $725

LON — SYD
21 Oct — 28 Oct1
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

Sun 15/1110:30 -
1 stop40h 35m
Sun 29/1112:00 -
1 stop37h 00m
Deal found 21/9$1,283
Sun 1/1110:30 -
1 stop40h 35m
Sun 15/1122:30 -
1 stop43h 00m
Deal found 21/9$1,285
Sat 31/1010:30 -
1 stop40h 35m
Fri 13/1112:00 -
1 stop29h 30m
Deal found 18/9$1,287
Wed 25/1122:00 -
1 stop36h 30m
Sat 20/208:40 -
2 stops40h 20m
Deal found 17/9$1,290
Sun 8/1121:00 -
1 stop30h 05m
Sun 22/1112:00 -
1 stop40h 30m
Deal found 20/9$1,292
Tue 17/1110:30 -
1 stop40h 35m
Sat 5/1212:00 -
1 stop37h 00m
Deal found 18/9$1,292
Mon 2/1110:30 -
1 stop40h 35m
Fri 13/1112:00 -
1 stop37h 00m
Deal found 18/9$1,294
Thu 5/1110:30 -
1 stop36h 30m
Wed 25/1122:30 -
1 stop43h 00m
Deal found 21/9$1,295
Sat 14/1121:00 -
1 stop30h 05m
Sun 24/101:50 -
1 stop26h 40m
Deal found 19/9$1,298
Sun 18/1017:55 -
1 stop30h 05m
Tue 3/1112:00 -
1 stop29h 30m
Deal found 21/9$1,298
Wed 28/1017:15 -
2 stops29h 30m
Wed 4/1123:30 -
1 stop30h 05m
Deal found 20/9$1,299
Sun 18/1017:55 -
1 stop30h 05m
Sun 8/1112:00 -
1 stop37h 00m
Deal found 20/9$1,299

Find flight deals from London to Australia

Round-trip from

$1,283

One-way from

$725

Popular in

December

Cheapest in

May

Average price

$1,821

Good round-trip deal

$2,929 or less

Good one-way deal

$2,032 or less
China Eastern
  • China Eastern
  • 15/11-29/11
  • 2 total stops
  • 77h 35m total
  • London to Australia
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China Eastern
  • China Eastern
  • 2/12-31/12
  • 1 total stop
  • 40h 35m total
  • London to Australia
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($209 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease ($95 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from London (LON) to Australia.
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Price to beat on a one-way flight from London (LON) to Australia.
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Cheapflights Fare Finder

 
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

Wed 2/12

08:50-06:50

3 stops35h 00m

Melbourne

Wed 31/12

00:00-15:00

Nonstop0h 00m

$768

LondonMelbourne

STN London Stansted - MEL Melbourne

STNMEL

London Stansted

Wed 2/12

17:10-07:25

2 stops51h 15m

Melbourne

Wed 31/12

00:00-15:00

Nonstop0h 00m

$807

LondonSydney

LTN London Luton - SYD Sydney Kingsford Smith

LTNSYD

London Luton

Tue 20/10

09:40-20:25

3 stops48h 45m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$824

LondonMelbourne

LCY London City - MEL Melbourne

LCYMEL

London City

Wed 2/12

08:40-06:50

2 stops35h 10m

Melbourne

Wed 31/12

00:00-15:00

Nonstop0h 00m

$835

LondonSydney

LHR London Heathrow - SYD Sydney Kingsford Smith

LHRSYD

London Heathrow

Tue 20/10

22:40-15:50

1 stop31h 10m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$954

LondonSydney

LTN London Luton - SYD Sydney Kingsford Smith

LTNSYD

London Luton

Sun 18/10

07:50-21:55

3 stops52h 05m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$954

LondonSydney

LTN London Luton - SYD Sydney Kingsford Smith

LTNSYD

London Luton

Sun 27/9

07:50-09:45

3 stops40h 55m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$961

LondonSydney

LTN London Luton - SYD Sydney Kingsford Smith

LTNSYD

London Luton

Tue 29/9

06:00-09:45

3 stops42h 45m

Sydney Kingsford Smith

Wed 31/12

00:00-15:00

Nonstop0h 00m

$968

LondonMelbourne

LGW London Gatwick - MEL Melbourne

LGWMEL

London Gatwick

Wed 25/11

18:40-07:10

2 stops25h 30m

Melbourne

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,131

LondonMelbourne

LHR London Heathrow - MEL Melbourne

LHRMEL

London Heathrow

Tue 8/12

18:40-07:10

2 stops25h 30m

Melbourne

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,132

Flights are sorted by cheapest return flights first.

Deals found on 16/9

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

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 $1,750). Flying from London to Australia in December is currently the most expensive (average of $2,634). 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?

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

The most flights from LON to AU0 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).

How often are flights from London to Australia delayed?

About 22% of weekly flights between London and Australia have experienced delays in the past year, with the average delay time being 114 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 22% 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

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
1,606 reviews
Check prices

Entertainment

8.1

Crew

8.6

Boarding

8.3

Overall

8.2

Food

7.8

Comfort

8.0

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
1,606 reviews
Singapore Airlines
8.2
Very Good
1,606 reviews
Check prices

Entertainment

8.1

Crew

8.6

Boarding

8.3

Overall

8.2

Food

7.8

Comfort

8.0

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
7.3
Good
3,731 reviews
Singapore Airlines
8.2
Very Good
1,606 reviews
Check prices

Entertainment

8.1

Crew

8.6

Boarding

8.3

Overall

8.2

Food

7.8

Comfort

8.0

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
1,531 reviews
Singapore Airlines
8.2
Very Good
1,606 reviews
Check prices

Entertainment

8.1

Crew

8.6

Boarding

8.3

Overall

8.2

Food

7.8

Comfort

8.0

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
172 reviews
Singapore Airlines
8.2
Very Good
1,606 reviews
Check prices

Entertainment

8.1

Crew

8.6

Boarding

8.3

Overall

8.2

Food

7.8

Comfort

8.0

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
242 reviews
Singapore Airlines
8.2
Very Good
1,606 reviews
Check prices

Entertainment

8.1

Crew

8.6

Boarding

8.3

Overall

8.2

Food

7.8

Comfort

8.0

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

  • How long is the flight from London to Australia?

    A quick flight from London to Australia can take about 22h 15m. Shenzhen Airlines provides one of the quickest options available for as low as $1,705. London and Australia are separated by a distance of 16837 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 ($500), China Southern ($667), and China Eastern ($691).

  • 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 $3,333, our data shows the cheapest flight currently is $2,235. When looking at the most popular route, (London Heathrow - Sydney Kingsford Smith), you can expect to pay $1,182 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 $1,750). Flying from London to Australia in December is currently the most expensive (average of $2,634). 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

Top 10 airlines flying from London to Australia

AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest$783Average$1,622FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air IndiaCheapest$1,168Average$1,921FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Singapore AirlinesCheapest$1,225Average$2,262FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
China EasternCheapest$1,244Average$1,518FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Etihad AirwaysCheapest$1,276Average$1,892FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Qatar AirwaysCheapest$1,372Average$2,408FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Cathay PacificCheapest$1,461Average$2,185FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Qantas AirwaysCheapest$1,475Average$2,400FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Malaysia AirlinesCheapest$1,535Average$2,605FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
EmiratesCheapest$1,686Average$2,020FlexibilityNo cancel feeOn-time75%
Search Emirates flights

Fly with Cheapflights

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.

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