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Cheap flights from Sydney to the United Kingdom from £288

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 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — LHR
30 Mar — 6 Apr1
1 adult

Cheap flight deals from Sydney to United Kingdom

Keep the following information in mind while searching for Sydney to United Kingdom flight deals. Data was last updated 25 March 2025.

Round-trip from

£689

One-way from

£288

Popular in

December

Cheapest in

October

Average price

£823

Good round-trip deal

£1,051 or less

Good one-way deal

£663 or less
Air China
  • Air China
  • 17/6-7/9
  • 2 total stops
  • 62h 15m total
  • Sydney to United Kingdom
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15/6
  • 15/6
  • 3 total stops
  • 42h 55m total
  • Sydney to United Kingdom
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£96 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£25 potential savings vs. average return price).
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Average for round-trip flights in March 2025
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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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Find flight deals from Sydney to United Kingdom

Cheapest flights from Sydney to United Kingdom
Explore the most affordable flight options available from Sydney to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 March 2025.

Mon 2/620:30SYD - LHR
1 stop31h 10mChina Eastern
Mon 16/621:20LHR - SYD
1 stop26h 40mChina Eastern
Deal found 25/3£690
Wed 28/510:05SYD - LHR
1 stop41h 55mChina Southern
Thu 12/622:10LHR - SYD
1 stop36h 30mChina Southern
Deal found 25/3£693
Mon 2/620:30SYD - LGW
1 stop27h 30mChina Eastern
Thu 26/611:35LGW - SYD
2 stops35h 05mChina Eastern
Deal found 25/3£693
Thu 15/506:00SYD - LGW
2 stops33h 40mMultiple Airlines
Tue 27/518:00LGW - SYD
2 stops28h 40mMultiple Airlines
Deal found 25/3£705
Thu 1/519:20SYD - BHX
1 stop31h 55mAir India
Mon 12/520:15BHX - SYD
1 stop36h 35mAir India
Deal found 25/3£713
Thu 1/521:00SYD - LHR
2 stops31h 30mMultiple Airlines
Thu 15/522:40LHR - SYD
1 stop31h 10mMultiple Airlines
Deal found 25/3£717
Tue 29/419:40SYD - LHR
1 stop33h 50mAir China
Thu 15/520:25LHR - SYD
1 stop33h 25mAir China
Deal found 25/3£719
Wed 1/1020:55SYD - LGW
2 stops46h 00mTurkish Airlines
Tue 28/1016:55LGW - SYD
2 stops39h 40mTurkish Airlines
Deal found 25/3£730
Sun 2/1121:15SYD - BHX
2 stops47h 50mTurkish Airlines
Sun 23/1116:50BHX - SYD
2 stops39h 45mTurkish Airlines
Deal found 25/3£747
Mon 28/715:00SYD - LHR
1 stop33h 45mSingapore Airlines
Tue 19/811:25LHR - SYD
1 stop33h 30mSingapore Airlines
Deal found 25/3£751
Tue 7/1021:55SYD - LHR
2 stops45h 55mTurkish Airlines
Mon 27/1006:35LHR - SYD
2 stops26h 00mTurkish Airlines
Deal found 25/3£758
Wed 1/1018:05SYD - LGW
1 stop45h 20mSingapore Airlines
Tue 28/1009:20LGW - SYD
1 stop39h 30mSingapore Airlines
Deal found 25/3£758

Cheapflights Fare Finder

Customise your flight search to find flights from Sydney to United Kingdom 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 25 March 2025.
Use the filters below to find and compare flights from Sydney to the United Kingdom that are best for you.

Fly from

Sydney

Fly to

United Kingdom

Route

Depart

Return

Price

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Tue 17/6

19:40-17:45

1 stop31h 05m

London Heathrow

Sun 7/9

22:40-14:50

1 stop31h 10m

£689

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Thu 22/5

11:00-18:40

1 stop40h 40m

London Heathrow

Fri 13/6

21:20-12:35

1 stop30h 15m

£690

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Wed 28/5

10:05-19:00

1 stop41h 55m

London Heathrow

Thu 12/6

22:10-19:40

1 stop36h 30m

£693

SydneyLondon

SYD - LGW

SYDLGW

Sydney Kingsford Smith

Mon 2/6

20:30-15:00

1 stop27h 30m

London Gatwick

Thu 26/6

11:35-07:40

2 stops35h 05m

£693

SydneyLondon

SYD - LGW

SYDLGW

Sydney Kingsford Smith

Thu 15/5

06:00-06:40

2 stops33h 40m

London Gatwick

Tue 27/5

18:00-07:40

2 stops28h 40m

£705

SydneyBirmingham

SYD - BHX

SYDBHX

Sydney Kingsford Smith

Thu 1/5

19:20-18:15

1 stop31h 55m

Birmingham

Mon 12/5

20:15-17:50

1 stop36h 35m

£713

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Tue 6/5

22:10-16:35

1 stop27h 25m

London Heathrow

Sun 25/5

11:00-19:35

1 stop23h 35m

£727

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Wed 14/5

12:00-17:45

2 stops38h 45m

London Heathrow

Wed 28/5

22:40-18:25

2 stops34h 45m

£736

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Fri 9/5

22:10-16:30

1 stop27h 20m

London Heathrow

Fri 16/5

21:10-10:45

1 stop28h 35m

£764

SydneyLondon

SYD - LHR

SYDLHR

Sydney Kingsford Smith

Tue 17/6

08:55-19:55

1 stop44h 00m

London Heathrow

Wed 25/6

09:20-06:20

1 stop36h 00m

£768

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 60 results
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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
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 Sydney to the United Kingdom

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

Currently, January is the cheapest month in which you can book a flight from Sydney to United Kingdom (average of £112). Flying from Sydney to United Kingdom in August is currently the most expensive (average of £164). 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?

Find hourly flight availability from Sydney to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 March 2025.

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

Rainfall in United Kingdom by month

Plan your trip to United Kingdom by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in United Kingdom ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit United Kingdom when rainfall is around 40.0 mm.

Temperature in United Kingdom by month

Plan your trip to United Kingdom by taking into account the average temperature totals by month.

If weather is an important factor for your trip to United Kingdom, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated 25 March 2025.
Get a feel of what it's like to fly with Korean Air, Japan Airlines and ANA from Sydney to United Kingdom by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,047 reviews
Check prices

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very Good
1,047 reviews
Korean Air
8.4
Very Good
1,047 reviews
Check prices

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Japan Airlines
8.3
Very Good
1,440 reviews
Korean Air
8.4
Very Good
1,047 reviews
Check prices

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
ANA
8.3
Very Good
826 reviews
Korean Air
8.4
Very Good
1,047 reviews
Check prices

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.2
Very Good
722 reviews
Korean Air
8.4
Very Good
1,047 reviews
Check prices

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very Good
1,284 reviews
Korean Air
8.4
Very Good
1,047 reviews
Check prices

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Sydney to United Kingdom. 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 from for flights from Sydney to United Kingdom?

    Sydney Kingsford Smith (SYD), located 4.6 mi from the city center, is the airport you fly out of when you book flights from Sydney to United Kingdom.

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

    The cheapest airline one-way is Hainan Airlines, with whom users have recently found tickets for as low as £318. However, be on the lookout for offers from Air China and China Southern, 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 route from Sydney to United Kingdom is Sydney Kingsford Smith - London Heathrow. You may also consider Sydney Kingsford Smith - London Gatwick or Sydney Kingsford Smith - London Stansted.

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

    Looking for the cheapest flight from Sydney to United Kingdom? While on average our users pay £886, our data indicates the cheapest price to be £655. The most popular route (Sydney Kingsford Smith - London Heathrow), is priced around £645.

  • 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, January is the cheapest month in which you can book a flight from Sydney to United Kingdom (average of £112). Flying from Sydney to United Kingdom in August is currently the most expensive (average of £164). 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

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Alternative routes for Sydney to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Sydney to United Kingdom

Discover the top 10 airlines that operate flights from Sydney to United Kingdom. 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 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest£609Average£880FlexibilityNo cancel feeOn-time67%
Search Air China flights
China SouthernCheapest£621Average£1,062FlexibilityNo cancel feeOn-time69%
Search China Southern flights
China EasternCheapest£658Average£1,190FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
China AirlinesCheapest£699Average£896FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Air IndiaCheapest£734Average£876FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Etihad AirwaysCheapest£749Average£1,066FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Turkish AirlinesCheapest£758Average£1,033FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Cathay PacificCheapest£772Average£1,171FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Qatar AirwaysCheapest£782Average£1,159FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Singapore AirlinesCheapest£792Average£1,004FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines 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 Sydney to United Kingdom?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to United Kingdom from Sydney today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from Sydney to United Kingdom by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

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

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

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

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