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Cheap flights from Sydney to the United Kingdom from $645

SYD — LHR
21 Sep — 28 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sydney to United Kingdom

Enter your travel dates to find the best prices.

Cheapest flights from Sydney to United Kingdom

Tue 22/920:35 -
1 stop30h 40m
Mon 28/921:30 -
1 stop36h 35m
Deal found 20/8$1,402
Tue 25/820:35 -
1 stop30h 30m
Sat 12/921:30 -
1 stop36h 35m
Deal found 18/8$1,407
Thu 22/1021:00 -
2 stops32h 30m
Sun 1/1121:30 -
2 stops29h 05m
Deal found 22/8$1,435
Tue 1/911:00 -
1 stop41h 10m
Fri 4/911:35 -
3 stops35h 25m
Deal found 21/8$1,435
Thu 15/1012:00 -
1 stop40h 40m
Thu 29/1021:00 -
2 stops49h 05m
Deal found 22/8$1,436
Tue 6/1021:35 -
1 stop25h 10m
Tue 27/1021:30 -
2 stops48h 55m
Deal found 20/8$1,437
Wed 30/920:30 -
1 stop43h 10m
Wed 28/1010:30 -
1 stop36h 30m
Deal found 20/8$1,437
Thu 17/921:00 -
2 stops31h 30m
Sat 31/1021:30 -
2 stops29h 05m
Deal found 22/8$1,439
Tue 15/911:00 -
1 stop37h 00m
Mon 5/1011:35 -
1 stop36h 25m
Deal found 21/8$1,439
Fri 16/1011:05 -
2 stops37h 55m
Sat 31/1020:20 -
2 stops37h 00m
Deal found 21/8$1,440
Tue 20/1012:00 -
1 stop40h 40m
Tue 27/1021:00 -
2 stops49h 05m
Deal found 20/8$1,442
Tue 8/911:00 -
1 stop37h 00m
Tue 13/1018:00 -
2 stops29h 00m
Deal found 22/8$1,442

Find flight deals from Sydney to United Kingdom

Round-trip from

$1,402

One-way from

$645

Popular in

December

Cheapest in

February

Average price

$1,813

Good round-trip deal

$2,095 or less

Good one-way deal

$1,749 or less
Air India
  • Air India
  • 22/9-28/9
  • 2 total stops
  • 67h 15m total
  • Sydney to United Kingdom
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XiamenAir
  • XiamenAir
  • 15/10
  • 1 total stop
  • 28h 10m total
  • Sydney to United Kingdom
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Highest demand for flights based on searches. 6% potential increase in price ($176 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease ($69 potential savings vs. average return price).
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Average for round-trip flights in August 2026
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Price to beat on a round-trip flight from Sydney Kingsford Smith to United Kingdom.
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Price to beat on a one-way flight from Sydney Kingsford Smith to United Kingdom.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Sydney to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneyBelfast

SYD Sydney Kingsford Smith - BFS Belfast Intl

SYDBFS

Sydney Kingsford Smith

Sat 7/11

12:00-17:50

2 stops40h 50m

Belfast Intl

Sun 15/11

09:25-13:35

2 stops41h 10m

$1,514

SydneyBirmingham

SYD Sydney Kingsford Smith - BHX Birmingham

SYDBHX

Sydney Kingsford Smith

Sat 3/10

20:35-18:15

1 stop30h 40m

Birmingham

Sat 10/10

21:30-20:05

1 stop36h 35m

$1,608

SydneyLondon

SYD Sydney Kingsford Smith - LHR London Heathrow

SYDLHR

Sydney Kingsford Smith

Sat 21/11

21:35-16:20

2 stops29h 45m

London Heathrow

Wed 3/2

22:40-19:25

2 stops33h 45m

$1,650

SydneyBirmingham

SYD Sydney Kingsford Smith - BHX Birmingham

SYDBHX

Sydney Kingsford Smith

Tue 13/10

22:05-09:05

2 stops45h 00m

Birmingham

Tue 27/10

11:00-19:25

2 stops45h 25m

$1,693

SydneyLondon

SYD Sydney Kingsford Smith - STN London Stansted

SYDSTN

Sydney Kingsford Smith

Thu 12/11

21:35-16:20

2 stops29h 45m

London Stansted

Sun 15/11

10:55-19:25

2 stops45h 30m

$1,694

SydneyGlasgow

SYD Sydney Kingsford Smith - GLA Glasgow Intl

SYDGLA

Sydney Kingsford Smith

Wed 28/10

15:15-10:30

2 stops30h 15m

Glasgow Intl

Sun 1/11

11:40-06:55

2 stops32h 15m

$1,743

SydneyLondon

SYD Sydney Kingsford Smith - LTN London Luton

SYDLTN

Sydney Kingsford Smith

Sun 6/9

10:05-09:00

2 stops31h 55m

London Luton

Sun 13/9

07:50-19:25

2 stops26h 35m

$1,756

SydneyManchester

SYD Sydney Kingsford Smith - MAN Manchester

SYDMAN

Sydney Kingsford Smith

Thu 12/11

15:15-08:15

2 stops28h 00m

Manchester

Mon 16/11

08:55-06:55

2 stops35h 00m

$1,777

SydneyLondon

SYD Sydney Kingsford Smith - LGW London Gatwick

SYDLGW

Sydney Kingsford Smith

Fri 11/9

21:05-22:25

2 stops34h 20m

London Gatwick

Sun 20/9

17:35-19:10

2 stops40h 35m

$1,781

SydneyManchester

SYD Sydney Kingsford Smith - MAN Manchester

SYDMAN

Sydney Kingsford Smith

Thu 12/11

21:30-06:15

1 stop43h 45m

Manchester

Mon 16/11

19:55-06:30

1 stop23h 35m

$1,789

Flights are sorted by cheapest return flights first.

Deals found on 22/8

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Sydney to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Sydney with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Sydney to the United Kingdom

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

Currently, February is the cheapest month in which you can book a flight from Sydney to United Kingdom (average of $1,574). Flying from Sydney to United Kingdom in December is currently the most expensive (average of $2,563). 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 SYD to GB?

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

Weekly flight availability from Sydney to United Kingdom

The most flights from SYD to GB0 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 far ahead should I book a flight from Sydney to United Kingdom?

The best time to book flights from Sydney to United Kingdom is 50 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 United Kingdom

Read through reviews of airlines operating flights from Sydney to the United Kingdom, such as Emirates,Qantas Airways, andEtihad Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very Good
3,657 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.1

Food

7.9

Crew

8.4

Entertainment

8.2

Reviews

1 / 20
6.0
Good

Jodie,Aug 2026

SYD - DXB

Overall it was a good flight with great service, however we paid for extra legroom only to find that the seat my husband was on was extremely small, it was the “window” seat. It seemed smaller than a regular seat so definitely not worth the amount we paid.
Emirates
8.1
Very Good
3,657 reviews
Emirates
8.1
Very Good
3,657 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.1

Food

7.9

Crew

8.4

Entertainment

8.2

Reviews

1 / 20
6.0
Good

Jodie,Aug 2026

SYD - DXB

Overall it was a good flight with great service, however we paid for extra legroom only to find that the seat my husband was on was extremely small, it was the “window” seat. It seemed smaller than a regular seat so definitely not worth the amount we paid.
Qantas Airways
7.5
Good
1,085 reviews
Emirates
8.1
Very Good
3,657 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.1

Food

7.9

Crew

8.4

Entertainment

8.2

Reviews

1 / 20
6.0
Good

Jodie,Aug 2026

SYD - DXB

Overall it was a good flight with great service, however we paid for extra legroom only to find that the seat my husband was on was extremely small, it was the “window” seat. It seemed smaller than a regular seat so definitely not worth the amount we paid.
Etihad Airways
7.3
Good
1,509 reviews
Emirates
8.1
Very Good
3,657 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.1

Food

7.9

Crew

8.4

Entertainment

8.2

Reviews

1 / 20
6.0
Good

Jodie,Aug 2026

SYD - DXB

Overall it was a good flight with great service, however we paid for extra legroom only to find that the seat my husband was on was extremely small, it was the “window” seat. It seemed smaller than a regular seat so definitely not worth the amount we paid.
China Southern
7.3
Good
172 reviews
Emirates
8.1
Very Good
3,657 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.1

Food

7.9

Crew

8.4

Entertainment

8.2

Reviews

1 / 20
6.0
Good

Jodie,Aug 2026

SYD - DXB

Overall it was a good flight with great service, however we paid for extra legroom only to find that the seat my husband was on was extremely small, it was the “window” seat. It seemed smaller than a regular seat so definitely not worth the amount we paid.
China Eastern
7.3
Good
232 reviews
Emirates
8.1
Very Good
3,657 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.1

Food

7.9

Crew

8.4

Entertainment

8.2

Reviews

1 / 20
6.0
Good

Jodie,Aug 2026

SYD - DXB

Overall it was a good flight with great service, however we paid for extra legroom only to find that the seat my husband was on was extremely small, it was the “window” seat. It seemed smaller than a regular seat so definitely not worth the amount we paid.

Related info for your journey

  • What airport do you fly from for flights from Sydney to United Kingdom?

    Sydney Kingsford Smith (SYD) is the airport you will fly out of if you book a flight from Sydney to United Kingdom. It is only a 7.5 km journey to Kingsford Smith (SYD) from Sydney’s city centre.

  • How long is the flight from Sydney to United Kingdom?

    Departing from Sydney to United Kingdom will take you 29h 45m. Sydney and United Kingdom are separated by a distance of 17008 km. This flight may include one or multiple stops.

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

    The cheapest airline one-way is China Southern, with whom users have recently found tickets for as low as $344. However, be on the lookout for offers from Air China and Hainan Airlines, as they are both options that can get you from Sydney to United Kingdom for a low price.

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

    The most popular flight routes from Sydney to United Kingdom are Sydney Kingsford Smith - London Heathrow, Sydney Kingsford Smith - London Stansted and Sydney Kingsford Smith - London Gatwick.

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

    The cheapest flight price from Sydney to United Kingdom is $1,682. On average you can expect to pay $6,409. The most popular route, (Sydney Kingsford Smith - London Heathrow), can usually be booked for $1,286.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Sydney to United Kingdom (average of $1,574). Flying from Sydney to United Kingdom in December is currently the most expensive (average of $2,563). 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 Sydney to United Kingdom

AirlineCheapestAverageFlexibilityOn-time
Virgin AustraliaCheapest$852Average$2,193FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
Air ChinaCheapest$929Average$1,577FlexibilityNo cancel feeOn-time67%
Search Air China flights
China SouthernCheapest$954Average$1,445FlexibilityNo cancel feeOn-time69%
Search China Southern flights
China EasternCheapest$1,074Average$1,796FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Turkish AirlinesCheapest$1,112Average$1,790FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
China AirlinesCheapest$1,304Average$1,622FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Air IndiaCheapest$1,314Average$1,624FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
British AirwaysCheapest$1,357Average$2,109FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Malaysia AirlinesCheapest$1,461Average$1,714FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Cathay PacificCheapest$1,476Average$2,658FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights

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Millions of users choose and trust Cheapflights to book the best flight deals from Sydney to United Kingdom 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 Sydney to United Kingdom with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Sydney to United Kingdom, users can toggle the no change fees filter when performing a flight search.

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