Cheap flights from London to Sydney 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SYD
20 Feb — 27 Feb1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Sydney Kingsford Smith are usually found in May or June, booked 46 days in advance, depart on a Monday or Tuesday and return on a Wednesday

Cheap flight deals from London to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from London to Sydney
Explore the most affordable flight options available from London to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 January 2026.

Mon 2/222:00
LHR
-
SYD
1 stop28h 35m
Multiple Airlines
Mon 9/212:00
SYD
-
LHR
1 stop40h 30m
Multiple Airlines
Deal found 20/1£744
Sun 1/221:00
LHR
-
SYD
1 stop26h 00m
China Eastern
Tue 3/312:00
SYD
-
LHR
1 stop40h 30m
China Eastern
Deal found 20/1£744
Sun 25/117:00
LGW
-
SYD
2 stops38h 45m
Multiple Airlines
Sun 8/210:30
SYD
-
LGW
1 stop38h 30m
Multiple Airlines
Deal found 20/1£745
Wed 13/506:15
STN
-
SYD
2 stops25h 45m
Turkish Airlines
Thu 4/621:30
SYD
-
STN
2 stops28h 20m
Turkish Airlines
Deal found 20/1£745
Wed 8/418:25
LGW
-
SYD
1 stop29h 35m
China Eastern
Wed 13/520:30
SYD
-
LGW
1 stop27h 30m
China Eastern
Deal found 19/1£747
Sat 21/216:35
LHR
-
SYD
2 stops27h 00m
Turkish Airlines
Sat 7/321:45
SYD
-
LHR
2 stops29h 25m
Turkish Airlines
Deal found 19/1£747
Sat 18/421:00
LHR
-
SYD
2 stops30h 35m
China Southern
Sat 2/514:15
SYD
-
LHR
1 stop37h 45m
China Southern
Deal found 20/1£747
Wed 21/110:30
LGW
-
SYD
1 stop40h 05m
China Eastern
Wed 28/121:30
SYD
-
LGW
1 stop44h 00m
China Eastern
Deal found 20/1£748
Wed 21/121:00
LHR
-
SYD
1 stop29h 35m
China Eastern
Wed 28/110:30
SYD
-
LHR
1 stop42h 00m
China Eastern
Deal found 20/1£748
Sun 19/419:00
LGW
-
SYD
1 stop29h 00m
China Eastern
Sat 2/511:00
SYD
-
LGW
1 stop38h 00m
China Eastern
Deal found 20/1£749
Wed 28/117:15
LHR
-
SYD
2 stops26h 20m
Multiple Airlines
Thu 12/221:00
SYD
-
LHR
2 stops31h 35m
Multiple Airlines
Deal found 18/1£749
Thu 19/317:00
LGW
-
SYD
1 stop30h 00m
China Eastern
Mon 6/411:00
SYD
-
LGW
1 stop28h 40m
China Eastern
Deal found 20/1£749

Find flight deals from London to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 January 2026.

Round-trip from

£744

One-way from

£399

Popular in

December

Cheapest in

May

Average price

£999

Good round-trip deal

£983 or less

Good one-way deal

£1,219 or less
China Eastern
  • China Eastern
  • 3/3-24/3
  • 3 total stops
  • 60h 30m total
  • London to Sydney
China Eastern
  • China Eastern
  • 7/4
  • 3 total stops
  • 49h 40m total
  • London to Sydney
Highest demand for flights based on searches. 8% potential increase in price (£68 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£25 potential savings vs. average return price).
Average for round-trip flights in January 2026
Price to beat on a round-trip flight from London (LON) to Sydney Kingsford Smith.
Price to beat on a one-way flight from London (LON) to Sydney Kingsford Smith.

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Sydney 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 21 January 2026.
Use the filters below to find and compare flights from London to Sydney that are best for you.

Fly from

London

Fly to

Sydney

Route

Depart

Return

Price

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sat 21/2

16:40-06:35

2 stops26h 55m

Sydney Kingsford Smith

Sat 7/3

21:45-14:55

2 stops28h 10m

£749

LondonSydney

LGW - SYD

LGWSYD

London Gatwick

Tue 17/3

17:00-10:00

1 stop30h 00m

Sydney Kingsford Smith

Mon 27/4

20:30-15:00

1 stop27h 30m

£764

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 17/2

21:00-13:35

1 stop29h 35m

Sydney Kingsford Smith

Wed 11/3

21:30-17:30

1 stop31h 00m

£765

LondonSydney

LGW - SYD

LGWSYD

London Gatwick

Tue 3/3

10:30-11:00

3 stops37h 30m

Sydney Kingsford Smith

Sun 22/3

21:30-14:00

1 stop27h 30m

£770

LondonSydney

LGW - SYD

LGWSYD

London Gatwick

Fri 6/3

17:00-11:00

2 stops55h 00m

Sydney Kingsford Smith

Tue 7/4

11:00-15:00

1 stop37h 00m

£770

LondonSydney

LGW - SYD

LGWSYD

London Gatwick

Sat 14/3

17:00-11:00

2 stops31h 00m

Sydney Kingsford Smith

Mon 27/4

20:30-15:00

1 stop27h 30m

£770

LondonSydney

LGW - SYD

LGWSYD

London Gatwick

Tue 3/3

17:00-11:00

2 stops31h 00m

Sydney Kingsford Smith

Mon 6/4

11:00-06:40

1 stop28h 40m

£770

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 11/3

21:00-13:35

1 stop29h 35m

Sydney Kingsford Smith

Sat 28/3

13:30-17:40

2 stops63h 10m

£773

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 16/2

21:00-13:35

1 stop29h 35m

Sydney Kingsford Smith

Mon 2/3

13:30-17:30

3 stops63h 00m

£773

LondonSydney

LTN - SYD

LTNSYD

London Luton

Wed 4/3

14:00-09:15

2 stops32h 15m

Sydney Kingsford Smith

Wed 11/3

20:05-18:40

2 stops33h 35m

£776

Flights are sorted by cheapest return flights first.

Deals found on 19/1

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

Have a flexible travel schedule? Discover the best time to fly to Sydney 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 Sydney

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

Use this chart to determine the optimal time to book a return flight from London to Sydney. Price data was last updated on 16 January 2026.

The best time to book flights from London to Sydney is 46 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.

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

Currently, February is the cheapest month in which you can book a flight from London to Sydney (average of £332). Flying from London to Sydney in January is currently the most expensive (average of £749). 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 SYD?

Find hourly flight availability from London to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 January 2026.

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

Weekly flight availability from London to Sydney

Explore weekly flight availability from London to Sydney. 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 21 January 2026.

The most flights from LON to SYD 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 much does it cost for a return flight from London to Sydney?

What’s the top stopover airport for flights from London to Sydney?

Share of one-stop return flights from London to Sydney chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Singapore (SIN) – chosen by Cheapflights users on 13% of one-stop itineraries from London to Sydney on Cheapflights.

What’s the cheapest stopover airport for flights from London to Sydney?

Average return fare for one-stop flights from London to Sydney, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Jakarta (CGK) is the most affordable one-stop option, with an average return flight price of £343.

What’s the fastest stopover option from London to Sydney?

Shortest average travel time for one-stop one-way flights from London to Sydney, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Jakarta (CGK) have the shortest average one-way travel time for one-stop routes: 12h 20m.

Which airport typically offers the quickest stopover for flights from London to Sydney?

Average stopover duration for one-stop one-way flights from London to Sydney, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Singapore (SIN) offer the fastest connection on this route, with an average stopover time of 1h 15m.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. 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 Sydney. Reviews last updated 21 January 2026.
Check out reviews from past customers who have flown with Cathay Pacific, Etihad Airways, andChina Southern from London to Sydney to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.1

Comfort

7.6

Food

7.3

Boarding

7.9

Overall

7.6

Entertainment

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jan 2026

HKG - CTS

I went to sleep without dinner, woke up about 4 hours before landing. I asked for breakfast, waited for an hour, nothing, I asked again, still nothing after 15 minutes. I then asked for coffee, when the coffee came after half an hour, it was cold. Crew manager apologised.

Crew

8.1

Comfort

7.6

Food

7.3

Boarding

7.9

Overall

7.6

Entertainment

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jan 2026

HKG - CTS

I went to sleep without dinner, woke up about 4 hours before landing. I asked for breakfast, waited for an hour, nothing, I asked again, still nothing after 15 minutes. I then asked for coffee, when the coffee came after half an hour, it was cold. Crew manager apologised.

Crew

8.1

Comfort

7.6

Food

7.3

Boarding

7.9

Overall

7.6

Entertainment

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jan 2026

HKG - CTS

I went to sleep without dinner, woke up about 4 hours before landing. I asked for breakfast, waited for an hour, nothing, I asked again, still nothing after 15 minutes. I then asked for coffee, when the coffee came after half an hour, it was cold. Crew manager apologised.

Crew

8.1

Comfort

7.6

Food

7.3

Boarding

7.9

Overall

7.6

Entertainment

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jan 2026

HKG - CTS

I went to sleep without dinner, woke up about 4 hours before landing. I asked for breakfast, waited for an hour, nothing, I asked again, still nothing after 15 minutes. I then asked for coffee, when the coffee came after half an hour, it was cold. Crew manager apologised.

Crew

8.1

Comfort

7.6

Food

7.3

Boarding

7.9

Overall

7.6

Entertainment

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jan 2026

HKG - CTS

I went to sleep without dinner, woke up about 4 hours before landing. I asked for breakfast, waited for an hour, nothing, I asked again, still nothing after 15 minutes. I then asked for coffee, when the coffee came after half an hour, it was cold. Crew manager apologised.

Crew

8.1

Comfort

7.6

Food

7.3

Boarding

7.9

Overall

7.6

Entertainment

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jan 2026

HKG - CTS

I went to sleep without dinner, woke up about 4 hours before landing. I asked for breakfast, waited for an hour, nothing, I asked again, still nothing after 15 minutes. I then asked for coffee, when the coffee came after half an hour, it was cold. Crew manager apologised.

Related info for your journey

Find useful and relevant information for your journey from London to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Sydney from London?

    For a flight from London to Sydney, you will be flying into Kingsford Smith. Sydney Kingsford Smith (SYD) is just 4.6 mi from the center of the city. Kingsford Smith is the only Sydney airport and it handles 3 inbound flights from London per day. 29 airlines have flights to Sydney Kingsford Smith from London on a regular basis.

  • How long is the flight from London to Sydney?

    A quick flight from London to Sydney can take about 26h 55m. Turkish Airlines provides one of the quickest options available for as low as £749. Airlines will cover a distance of 10568 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from London to Sydney round-trip?

    Flying on Hainan Airlines is currently your cheapest option to Sydney, with prices starting at £335. Additional return tickets that might be worth considering are offered by China Southern and Air China, with the lowest prices starting at £463 and £484, respectively. Hainan Airlines is 64% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapet airlines for a one-way flight from London to Sydney are Air China (£330), Tianjin Airlines (£351), and China Southern (£368).

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

  • What are the cheapest flights from London to Sydney?

    The cheapest flight price from London to Sydney is £828. On average you can expect to pay £4,342. The most popular route, (London Heathrow - Sydney Kingsford Smith), can usually be booked for £554.

  • Where are the most common stopover locations when flying from London to Sydney?

  • What are some popular things to do or see while on a stopover in Shanghai?

    If you're on a stopover in Shanghai and looking for things to do, consider visiting People's Square, Shanghai Disneyland, or Shanghai Dianchun Hall. People's Square, Shanghai Disneyland, and Shanghai Dianchun Hall are located about 20.3 mi, 8.7 mi, and 19.4 mi, respectively from Shanghai Pu Dong.

  • What are some popular points of interest to see during a stopover in Singapore?

    Sentosa, Merlion, and Universal Studios Singapore are the most popular attractions in Singapore if you're in need of something to do during your stopover. Sentosa, Merlion and Universal Studios Singapore are located about 13.4 mi, 10.5 mi, and 13.4 mi, respectively from Singapore Changi if you are interested in checking them out. Those looking to explore during their stopover in Singapore can hire a car from Singapore Changi for about £59 per day.

  • What are points of interest worth seeing during a stopover in Abu Dhabi?

    Most Abu Dhabi visitors opt to spend their time at Etihad Towers, Emirates Palace, and Emirates Park Zoo. Etihad Towers, Emirates Palace, and Emirates Park Zoo are located about 20.8 mi, 21.1 mi, and 7.9 mi, respectively from Abu Dhabi Zayed Intl. Travellers in need of a car in Abu Dhabi can hire one for about £17 per day.

  • Where are the least popular stopover locations for London to Sydney flights?

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London to Sydney 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 Sydney?

    Currently, February is the cheapest month in which you can book a flight from London to Sydney (average of £332). Flying from London to Sydney in January is currently the most expensive (average of £749). 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 Sydney?

    There are a few major airlines that serve the route to Sydney from London; these are Virgin Atlantic, Cathay Pacific, Singapore Airlines, and Etihad Airways. All these companies are extremely cautious and forward-thinking when it comes to sustainability and an eco-friendly atmosphere. Cathay Pacific strives to make every customer’s journey important and embrace their responsibility to serve future generations. They are also strongly committed to social responsibility and go an extra mile to reduce the environmental impacts of their company. Some of their aims are to reduce waste and also consumption of natural resources, to support communities that promote the conservation of natural resources and to ensure their stakeholders’ business decisions are also aligned with environmental, social and economic considerations. Virgin Atlantic also prioritise their commitments when it comes to sustainable travel. They have a goal to be net zero by 2050, they are reducing aircraft weight and have 100 per cent green electricity in their offices.

  • How to fly more sustainably from London to Sydney?

    There are a few things you can do in order to fly more sustainably to Sydney from London. The first and most obvious one would be to fly directly, or with as little layovers as possible. While direct flights are not available on this route, there are many flights with two or three stopovers, and it would be wise to select those with only one stop in order to reduce environmental impact. Other steps you can take is to purchase your food beforehand to reduce food waste, and also bring your own reusable mugs for water and other beverages so you can reduce plastic waste.

See more FAQs

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Bondi Beach
Wollongong
Coogee
Manly

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Fly from London to Sydney on these airlines

Choose from the following airlines for your flight from London to Sydney. Flights are based on user searches made on Cheapflights and were last updated on 21 January 2026.

Top 10 airlines flying from London to Sydney

Discover the top 10 airlines that operate flights from London to Sydney. 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 21 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Hainan AirlinesCheapest£335Average£757FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Air ChinaCheapest£484Average£860FlexibilityNo cancel feeOn-time67%
Search Air China flights
Asiana AirlinesCheapest£676Average£1,194FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Turkish AirlinesCheapest£689Average£928FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
SWISSCheapest£734Average£952FlexibilityNo cancel feeOn-time79%
Search SWISS flights
China AirlinesCheapest£740Average£853FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Air New ZealandCheapest£765Average£1,223FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Qatar AirwaysCheapest£813Average£1,050FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Vietnam AirlinesCheapest£816Average£1,056FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
LufthansaCheapest£823Average£981FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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 Sydney?

When you search for this flight from London to Sydney, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Millions of users choose and trust Cheapflights to book the best flight deals from London to Sydney for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes! Cheapflights helps users easily find flights from London to Sydney with no change fees.

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

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

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