Cheap flights from London to Australia from $723

LON — SYD
17 Oct — 24 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

Mon 2/1117:00 -
1 stop33h 35m
Mon 16/1112:00 -
1 stop29h 30m
Deal found 12/9$1,199
Mon 2/1121:00 -
1 stop29h 35m
Mon 16/1112:00 -
1 stop40h 30m
Deal found 12/9$1,268
Thu 29/1009:50 -
1 stop24h 40m
Thu 5/1123:30 -
1 stop42h 00m
Deal found 14/9$1,274
Sat 31/1010:30 -
1 stop40h 35m
Sat 7/1113:00 -
2 stops52h 30m
Deal found 16/9$1,281
Thu 15/1011:35 -
1 stop36h 25m
Thu 22/1012:00 -
1 stop37h 00m
Deal found 15/9$1,282
Fri 30/1010:30 -
1 stop40h 35m
Fri 6/1112:00 -
1 stop29h 30m
Deal found 15/9$1,286
Sat 31/1010:30 -
1 stop36h 30m
Fri 13/1112:00 -
1 stop29h 30m
Deal found 15/9$1,288
Sat 5/1209:25 -
1 stop21h 25m
Thu 10/1217:10 -
1 stop24h 25m
Deal found 15/9$1,289
Thu 31/1210:30 -
1 stop26h 20m
Thu 28/122:30 -
1 stop26h 30m
Deal found 14/9$1,289
Tue 13/1021:20 -
1 stop26h 40m
Wed 28/1022:30 -
1 stop30h 00m
Deal found 14/9$1,291
Thu 22/1011:35 -
2 stops37h 25m
Wed 4/1122:30 -
1 stop43h 00m
Deal found 16/9$1,291
Wed 21/1018:00 -
3 stops55h 00m
Mon 26/1013:00 -
2 stops52h 30m
Deal found 15/9$1,292

Find flight deals from London to Australia

Round-trip from

$1,199

One-way from

$723

Popular in

December

Cheapest in

May

Average price

$1,822

Good round-trip deal

$2,931 or less
China Eastern
  • China Eastern
  • 2/11-16/11
  • 2 total stops
  • 63h 05m total
  • London to Australia
Hainan Airlines
  • Hainan Airlines
  • 28/10-31/12
  • 1 total stop
  • 32h 25m total
  • London to Australia
Highest demand for flights based on searches. 7% potential increase in price ($209 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($97 potential savings vs. average return price).
Average for round-trip flights in September 2026
Price to beat on a round-trip flight from London (LON) to Australia.

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

LHR London Heathrow - MEL Melbourne

LHRMEL

London Heathrow

Mon 23/11

21:30-09:35

1 stop25h 05m

Melbourne

Wed 31/12

00:00-15:00

Nonstop0h 00m

$772

LondonMelbourne

LHR London Heathrow - MEL Melbourne

LHRMEL

London Heathrow

Mon 2/11

21:30-09:35

1 stop25h 05m

Melbourne

Wed 31/12

00:00-15:00

Nonstop0h 00m

$772

LondonPerth

LHR London Heathrow - PER Perth

LHRPER

London Heathrow

Mon 7/12

21:10-19:40

3 stops38h 30m

Perth

Wed 31/12

00:00-17:00

Nonstop0h 00m

$803

LondonMelbourne

LHR London Heathrow - MEL Melbourne

LHRMEL

London Heathrow

Thu 26/11

22:30-13:00

1 stop27h 30m

Melbourne

Wed 31/12

00:00-15:00

Nonstop0h 00m

$820

LondonPerth

STN London Stansted - PER Perth

STNPER

London Stansted

Sat 3/10

15:05-05:50

3 stops55h 45m

Perth

Wed 31/12

00:00-17:00

Nonstop0h 00m

$862

LondonPerth

STN London Stansted - PER Perth

STNPER

London Stansted

Sat 26/9

23:00-19:50

2 stops37h 50m

Perth

Wed 31/12

00:00-17:00

Nonstop0h 00m

$879

LondonPerth

LHR London Heathrow - PER Perth

LHRPER

London Heathrow

Wed 7/10

20:45-03:45

2 stops24h 00m

Perth

Wed 31/12

00:00-17:00

Nonstop0h 00m

$1,031

LondonPerth

LHR London Heathrow - PER Perth

LHRPER

London Heathrow

Mon 19/10

20:45-05:50

2 stops50h 05m

Perth

Wed 31/12

00:00-17:00

Nonstop0h 00m

$1,035

LondonPerth

STN London Stansted - PER Perth

STNPER

London Stansted

Sun 4/10

09:30-05:40

2 stops37h 10m

Perth

Wed 31/12

00:00-17:00

Nonstop0h 00m

$1,062

LondonMelbourne

LHR London Heathrow - MEL Melbourne

LHRMEL

London Heathrow

Fri 1/1

21:00-15:10

1 stop31h 10m

Melbourne

Wed 31/12

00:00-15:00

Nonstop0h 00m

$1,107

Flights are sorted by cheapest return flights first.

Deals found on 13/9

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 $1,748). Flying from London to Australia in December is currently the most expensive (average of $2,633). 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 Monday (3 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 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.

Comfort

8.0

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

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.

Comfort

8.0

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

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.

Comfort

8.0

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

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.

Comfort

8.0

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

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.

Comfort

8.0

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

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.

Comfort

8.0

Boarding

8.3

Crew

8.6

Food

7.8

Overall

8.2

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

  • How long is the flight from London to Australia?

    A quick flight from London to Australia can take about 21h 25m. Turkish Airlines provides one of the quickest options available for as low as $1,713. London and Australia are separated by a distance of 16943 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 ($668), and China Eastern ($691).

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

  • What are the cheapest flights from London to Australia?

    While on average a flight from London to Australia is generally $2,947, our data shows the cheapest flight currently is $2,237. When looking at the most popular route, (London Heathrow - Sydney Kingsford Smith), you can expect to pay $1,215 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 $1,748). Flying from London to Australia in December is currently the most expensive (average of $2,633). 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$784Average$1,611FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air IndiaCheapest$1,169Average$1,887FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Singapore AirlinesCheapest$1,226Average$2,258FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
China EasternCheapest$1,248Average$1,555FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Etihad AirwaysCheapest$1,277Average$1,966FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Qatar AirwaysCheapest$1,373Average$2,409FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Qantas AirwaysCheapest$1,438Average$2,508FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Cathay PacificCheapest$1,462Average$2,188FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Malaysia AirlinesCheapest$1,536Average$2,626FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
EmiratesCheapest$1,688Average$2,036FlexibilityNo 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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