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Cheap flights from the United Kingdom to Sydney from £423

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SYD
1 Jul — 8 Jul1
1 adult

Cheap flight deals from United Kingdom to Sydney

Keep the following information in mind while searching for United Kingdom to Sydney flight deals. Data was last updated 26 June 2025.

Round-trip from

£694

One-way from

£423

Popular in

December

Cheapest in

May

Average price

£829

Good round-trip deal

£991 or less

Good one-way deal

£1,014 or less
Air India
  • Air India
  • 17/8-9/9
  • 2 total stops
  • 48h 15m total
  • United Kingdom to Sydney
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15/9
  • 15/9
  • 3 total stops
  • 36h 40m total
  • United Kingdom to Sydney
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£77 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£23 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from United Kingdom to Sydney Kingsford Smith.
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Price to beat on a one-way flight from United Kingdom to Sydney Kingsford Smith.
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Find flight deals from United Kingdom to Sydney

Cheapest flights from United Kingdom to Sydney
Explore the most affordable flight options available from United Kingdom to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 June 2025.

Tue 21/1022:10LHR - SYD
1 stop25h 15mChina Southern
Thu 6/1111:25SYD - LHR
1 stop41h 50mChina Southern
Deal found 24/6£693
Sun 17/809:45LHR - SYD
1 stop23h 15mAir India
Tue 9/919:30SYD - LHR
1 stop25h 00mAir India
Deal found 25/6£694
Mon 13/1022:05LHR - SYD
2 stops36h 25mMultiple Airlines
Sat 25/1021:45SYD - LHR
2 stops56h 25mMultiple Airlines
Deal found 25/6£695
Wed 25/618:25LGW - SYD
2 stops52h 15mChina Eastern
Wed 9/711:00SYD - LGW
1 stop37h 00mChina Eastern
Deal found 25/6£696
Wed 29/1021:00LHR - SYD
1 stop29h 35mChina Eastern
Wed 12/1112:00SYD - LHR
1 stop40h 30mChina Eastern
Deal found 24/6£697
Tue 21/1021:30LGW - SYD
2 stops37h 10mChina Southern
Mon 3/1122:00SYD - LGW
2 stops30h 20mChina Southern
Deal found 24/6£698
Thu 25/909:00LGW - SYD
3 stops39h 45mMultiple Airlines
Sun 19/1013:50SYD - LGW
2 stops32h 45mMultiple Airlines
Deal found 25/6£703
Fri 14/1117:40LHR - SYD
1 stop34h 50mAir China
Sat 22/1120:40SYD - LHR
1 stop30h 15mAir China
Deal found 25/6£712
Thu 25/907:05STN - SYD
3 stops41h 40mMultiple Airlines
Sun 19/1013:50SYD - STN
3 stops35h 50mMultiple Airlines
Deal found 25/6£715
Mon 3/1121:25LHR - SYD
1 stop23h 30mMalaysia Airlines
Mon 24/1122:15SYD - LHR
1 stop28h 10mMalaysia Airlines
Deal found 25/6£744
Wed 29/1018:40LGW - SYD
2 stops30h 10mSWISS
Thu 13/1116:10SYD - LGW
2 stops36h 40mSWISS
Deal found 24/6£777
Sun 2/1108:55LHR - SYD
2 stops39h 55mSWISS
Mon 10/1112:15SYD - LHR
2 stops30h 50mSWISS
Deal found 24/6£780

Cheapflights Fare Finder

Customise your flight search to find flights from United Kingdom 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 26 June 2025.
Use the filters below to find and compare flights from the United Kingdom to Sydney that are best for you.

Fly from

United Kingdom

Fly to

Sydney

Route

Depart

Return

Price

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Tue 21/10

22:10-09:25

1 stop25h 15m

Sydney Kingsford Smith

Thu 6/11

11:25-18:15

1 stop41h 50m

£693

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Sun 17/8

09:45-18:00

1 stop23h 15m

Sydney Kingsford Smith

Tue 9/9

19:30-11:30

1 stop25h 00m

£694

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 13/10

22:05-20:30

2 stops36h 25m

Sydney Kingsford Smith

Sat 25/10

21:45-20:10

2 stops56h 25m

£695

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Wed 29/10

21:00-13:35

1 stop29h 35m

Sydney Kingsford Smith

Wed 12/11

12:00-17:30

1 stop40h 30m

£697

LondonSydney

LGW - SYD

LGWSYD

London Gatwick

Tue 21/10

21:30-20:40

2 stops37h 10m

Sydney Kingsford Smith

Mon 3/11

22:00-17:20

2 stops30h 20m

£698

LondonSydney

LGW - SYD

LGWSYD

London Gatwick

Fri 7/11

10:30-10:00

1 stop36h 30m

Sydney Kingsford Smith

Mon 17/11

12:00-06:30

1 stop29h 30m

£700

LondonSydney

LGW - SYD

LGWSYD

London Gatwick

Thu 25/9

09:00-09:45

3 stops39h 45m

Sydney Kingsford Smith

Sun 19/10

13:50-12:35

2 stops32h 45m

£703

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Fri 14/11

17:40-15:30

1 stop34h 50m

Sydney Kingsford Smith

Sat 22/11

20:40-15:55

1 stop30h 15m

£712

LondonSydney

STN - SYD

STNSYD

London Stansted

Thu 25/9

07:05-09:45

3 stops41h 40m

Sydney Kingsford Smith

Sun 19/10

13:50-15:40

3 stops35h 50m

£715

LondonSydney

LHR - SYD

LHRSYD

London Heathrow

Mon 3/11

21:25-07:55

1 stop23h 30m

Sydney Kingsford Smith

Mon 24/11

22:15-15:25

1 stop28h 10m

£744

Flights are sorted by cheapest return flights first.

Deals found on 25/6

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

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

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

Currently, May is the cheapest month in which you can book a flight from United Kingdom to Sydney (average of £985). Flying from United Kingdom to Sydney in July is currently the most expensive (average of £1,705). 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 GB to SYD?

Find hourly flight availability from United Kingdom 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 26 June 2025.

When flying from United Kingdom to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from United Kingdom to Sydney

Explore weekly flight availability from United Kingdom 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 26 June 2025.

The most flights from GB0 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).

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 26 June 2025.
Check out reviews from past customers who have flown with Japan Airlines, China Airlines, andHainan Airlines from the United Kingdom 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.
Japan Airlines
8.3
Very Good
1,504 reviews
Check prices

Crew

8.7

Food

7.7

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Japan Airlines
8.3
Very Good
1,504 reviews
Japan Airlines
8.3
Very Good
1,504 reviews
Check prices

Crew

8.7

Food

7.7

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
China Airlines
8.3
Very Good
745 reviews
Japan Airlines
8.3
Very Good
1,504 reviews
Check prices

Crew

8.7

Food

7.7

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Hainan Airlines
8.2
Very Good
40 reviews
Japan Airlines
8.3
Very Good
1,504 reviews
Check prices

Crew

8.7

Food

7.7

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Garuda Indonesia
8.1
Very Good
77 reviews
Japan Airlines
8.3
Very Good
1,504 reviews
Check prices

Crew

8.7

Food

7.7

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Singapore Airlines
8.1
Very Good
1,315 reviews
Japan Airlines
8.3
Very Good
1,504 reviews
Check prices

Crew

8.7

Food

7.7

Boarding

8.4

Entertainment

7.8

Comfort

8.2

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom 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 United Kingdom?

    Most people fly into Sydney Kingsford Smith (SYD) if they book a flight to Sydney from United Kingdom. Kingsford Smith is conveniently located just 4.6 mi from Sydney’s city center.

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

    £439 is the cheapest one-way deal found within the past few days, from Air China. You may also be able to find cheap deals on China Eastern and Beijing Capital Airlines, with prices starting from £440 and £443, respectively.

  • What are the most popular routes from United Kingdom to Sydney?

    Most travelers choose London Heathrow - Sydney Kingsford Smith, London Gatwick - Sydney Kingsford Smith or London Stansted - Sydney Kingsford Smith when deciding on the best route from United Kingdom to Sydney.

  • What are the cheapest flights from United Kingdom to Sydney?

    On average you can expect to pay £4,158 for a flight from United Kingdom to Sydney. The cheapest flight overall is £808 while the most popular route, (London Heathrow - Sydney Kingsford Smith) is currently priced at £614.

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

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

  • How can I find direct flights from United Kingdom to Sydney?

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Sydney?

    Currently, May is the cheapest month in which you can book a flight from United Kingdom to Sydney (average of £985). Flying from United Kingdom to Sydney in July is currently the most expensive (average of £1,705). 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

Travelling to a place near the United Kingdom?

Book flights to the United Kingdom if you plan to visit one of these locations
Bondi Beach
Coogee
Manly

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Alternative routes for United Kingdom to Sydney

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Top 10 airlines flying from United Kingdom to Sydney

Discover the top 10 airlines that operate flights from United Kingdom 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 26 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Hainan AirlinesCheapest£331Average£1,199FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Air ChinaCheapest£496Average£662FlexibilityNo cancel feeOn-time67%
Search Air China flights
Austrian AirlinesCheapest£654Average£796FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Turkish AirlinesCheapest£685Average£1,001FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
China AirlinesCheapest£721Average£814FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Vietnam AirlinesCheapest£767Average£1,038FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Air FranceCheapest£791Average£1,124FlexibilityNo cancel feeOn-time77%
Search Air France flights
SriLankan AirlinesCheapest£825Average£877FlexibilityNo cancel feeOn-time68%
Search SriLankan Airlines flights
Juneyao AirlinesCheapest£853Average£1,265FlexibilityNo cancel feeOn-time66%
Search Juneyao Airlines flights
KLMCheapest£877Average£1,575FlexibilityNo cancel feeOn-time75%
Search KLM 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 United Kingdom to Sydney?

When you search for this flight from United Kingdom 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 United Kingdom to Sydney?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from United Kingdom to Sydney.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from United Kingdom to Sydney flexibly with Cheapflights today.

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

Yes! Start tracking prices for United Kingdom to Sydney flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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