Cheap flights from London to Sydney

LON — SYD
25 Aug — 1 Sep1
1 adult

Cheapflights Tip: The best prices from London to Sydney Kingsford Smith are usually found in May or March, booked 36 days in advance, depart on a Monday or Tuesday and return on a Tuesday

Cheap 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 20 August 2025.

Round-trip from

£747

One-way from

£441

Popular in

December

Cheapest in

May

Average price

£1,047

Good round-trip deal

£1,078 or less

Good one-way deal

£975 or less
China Eastern
  • China Eastern
  • 5/11-22/11
  • 2 total stops
  • 77h 35m total
  • London to Sydney
China Eastern
  • China Eastern
  • 1/9
  • 1 total stop
  • 26h 40m total
  • London to Sydney
Highest demand for flights based on searches. 9% potential increase in price (£77 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 August 2025
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.

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 8 August 2025.

The best time to book flights from London to Sydney is 36 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, May is the cheapest month in which you can book a flight from London to Sydney (average of £985). Flying from London to Sydney in July is currently the most expensive (average of £1,724). 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 20 August 2025.

It’s optimal to fly from London to Sydney in the afternoon. By choosing this option you can save up to 27% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly from London to Sydney?

Use this chart to determine the cheapest time to fly return from London to Sydney. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London to Sydney flight should consider departing on Monday afternoons when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost for a return flight from London to Sydney?

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 20 August 2025.
Check out reviews from past customers who have flown with Emirates, Singapore Airlines, 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.

Entertainment

8.2

Overall

8.1

Food

7.8

Boarding

8.1

Crew

8.3

Comfort

8.0

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.

Entertainment

8.2

Overall

8.1

Food

7.8

Boarding

8.1

Crew

8.3

Comfort

8.0

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.

Entertainment

8.2

Overall

8.1

Food

7.8

Boarding

8.1

Crew

8.3

Comfort

8.0

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.

Entertainment

8.2

Overall

8.1

Food

7.8

Boarding

8.1

Crew

8.3

Comfort

8.0

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.

Entertainment

8.2

Overall

8.1

Food

7.8

Boarding

8.1

Crew

8.3

Comfort

8.0

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.

Entertainment

8.2

Overall

8.1

Food

7.8

Boarding

8.1

Crew

8.3

Comfort

8.0

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 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. 30 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 25h 05m. Cathay Pacific provides one of the quickest options available for as low as £868. Airlines will cover a distance of 10548 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 £502 and £504, respectively. Hainan Airlines is 65% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 £909. On average you can expect to pay £3,937. The most popular route, (London Heathrow - Sydney Kingsford Smith), can usually be booked for £585.

  • 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, Jing'an Temple, or Shanghai Disneyland. People's Square, Jing'an Temple, and Shanghai Disneyland are located about 20.3 mi, 22.0 mi, and 8.7 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 £56 per day.

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

    Most Guangzhou visitors opt to spend their time at Baima Clothing Wholesale Market, Yide Lu, and Guangzhou Zoo. Baima Clothing Wholesale Market, Yide Lu, and Guangzhou Zoo are located about 17.3 mi, 19.5 mi, and 17.2 mi, respectively from Guangzhou Baiyun.

  • 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, May is the cheapest month in which you can book a flight from London to Sydney (average of £985). Flying from London to Sydney in July is currently the most expensive (average of £1,724). 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
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 20 August 2025.

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 20 August 2025.
AirlineCheapestAverageFlexibilityOn-time
Hainan AirlinesCheapest£335Average£1,326FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Turkish AirlinesCheapest£690Average£965FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
China AirlinesCheapest£734Average£836FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
SWISSCheapest£735Average£934FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Austrian AirlinesCheapest£740Average£850FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Air New ZealandCheapest£764Average£1,189FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Vietnam AirlinesCheapest£798Average£1,068FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
LufthansaCheapest£823Average£1,024FlexibilityNo cancel feeOn-time76%
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United AirlinesCheapest£865Average£1,017FlexibilityNo cancel feeOn-time69%
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FinnairCheapest£918Average£1,024FlexibilityNo cancel feeOn-time76%
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Fly with Cheapflights

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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?

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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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