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.
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 |
Find flight deals from United Kingdom to Sydney
Cheapest flights from United Kingdom to SydneyExplore 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.
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.
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
Fly to
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
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
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
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
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
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
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
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
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
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
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.
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.
Crew
Food
Boarding
Entertainment
Comfort
Overall
Reviews
Roger,Jun 2025
ORD - PIT
Crew
Food
Boarding
Entertainment
Comfort
Overall
Reviews
Roger,Jun 2025
ORD - PIT
Crew
Food
Boarding
Entertainment
Comfort
Overall
Reviews
Roger,Jun 2025
ORD - PIT
Crew
Food
Boarding
Entertainment
Comfort
Overall
Reviews
Roger,Jun 2025
ORD - PIT
Crew
Food
Boarding
Entertainment
Comfort
Overall
Reviews
Roger,Jun 2025
ORD - PIT
Crew
Food
Boarding
Entertainment
Comfort
Overall
Reviews
Roger,Jun 2025
ORD - PIT
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.
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Alternative routes for United Kingdom to Sydney
See prices for flight routes from nearby airports that may be better suited for you.
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.
Fly with Cheapflights
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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.