Flights from London Heathrow to Sydney

Our cheapest offers for flights from London Heathrow to Sydney

Here you can compare cheap flights from London Heathrow (LHR) to Sydney (SYD) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Sydney. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Best option
London Heathrow
Sydney
Outbound
20/10/25
1 Stopover (CAN)
CZ0304, CZ0301
36h 30min
Return
11/11/25
1 Stopover (CAN)
CZ0302, CZ0303
31h 15min
China Southern Airlines
£766
London Heathrow
Sydney
Outbound
20/10/25
1 Stopover (CAN)
CZ0304, CZ0301
36h 30min
Return
11/11/25
1 Stopover (CAN)
CZ0302, CZ0303
31h 15min
China Southern Airlines
£768
London Heathrow
Sydney
Outbound
20/10/25
1 Stopover (CAN)
CZ0304, CZ0301
36h 30min
Return
11/11/25
1 Stopover (CAN)
CZ0302, CZ0303
31h 15min
China Southern Airlines
£775
London Heathrow
Sydney
Outbound
20/10/25
1 Stopover (CAN)
CZ0304, CZ0301
36h 30min
Return
11/11/25
2 Stopovers (CAN, PKX)
CZ0302, CZ3101, CZ0673
30h 55min
China Southern Airlines
£776
London Heathrow
Sydney
Outbound
20/10/25
1 Stopover (CAN)
CZ0304, CZ0301
36h 30min
Return
11/11/25
1 Stopover (CAN)
CZ0302, CZ0303
31h 15min
China Southern Airlines
£777
London Heathrow
Sydney
Outbound
20/10/25
2 Stopovers (PKX, SZX)
CZ0674, CZ3152, CZ3071
48h 25min
Return
11/11/25
1 Stopover (CAN)
CZ0302, CZ0303
31h 15min
China Southern Airlines ?
£820
London Heathrow
Sydney
Outbound
20/10/25
1 Stopover (CAN)
CZ0304, CZ0301
36h 30min
Return
11/11/25
1 Stopover (CAN)
CZ0302, CZ0303
31h 15min
China Southern Airlines
£820
London Heathrow
Sydney
Outbound
20/10/25
2 Stopovers (PKX, CAN)
CZ0674, CZ3114, CZ0301
37h 40min
Return
11/11/25
1 Stopover (CAN)
CZ0326, CZ0303
41h 50min
China Southern Airlines
£822
London Heathrow
Sydney
Outbound
20/10/25
2 Stopovers (PKX, CAN)
CZ0674, CZ3100, CZ0301
37h 40min
Return
11/11/25
1 Stopover (CAN)
CZ0302, CZ0303
31h 15min
China Southern Airlines
£825
London Heathrow
Sydney
Outbound
20/10/25
1 Stopover (CAN)
CZ0304, CZ0301
36h 30min
Return
11/11/25
1 Stopover (CAN)
CZ0302, CZ0303
31h 15min
China Southern Airlines
£826
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from London Heathrow to Sydney

Favourite airline: e.g. Air India, Air China
68 % of flights booked on the route from London Heathrow to Sydney are booked with Air India, Air China and Emirates.
Air India
29 %
Air China
29 %
Emirates
10 %
Favourite connection: via Beijing International
The most popular flights on this route are via Beijing International and are booked by 60 % of all travellers.
Route
bookings
1 stopover Beijing International
31h 10min, from 649 £
60 %
1 stopover Dubai
28h 15min, from 1 277 £
20 %
1 stopover Guangzhou Baiyun
25h 15min, from 1 012 £
13 %

Important flight information

Flight information: London Heathrow - Sydney

Outbound and return from 765,97 £
Flight duration min. 20:30 / max. 21:00
Return flight duration min. 22:00/ max. 22:25
Distance 17039 km
Flights per week 16
Departure airport Airport London Heathrow (LHR)
Arrival airport Airport Sydney Kingsford Smith (SYD)
Destination country Flights to Australia
Alternative routes to Australia
Alternative flights to Sydney
Flight destinations with a similar price