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
London Heathrow
Sydney
Outbound
18/12/25
2 Stopovers (IST, TFU)
3U7206, 3U3828, 3U3891
53h 05min
Return
-
Sichuan Airlines
£695
London Heathrow
Sydney
Outbound
02/03/26
1 Stopover (DEL)
AI0112, AI0302
43h 15min
Return
15/03/26
1 Stopover (DEL)
AI0301, AI0111
25h 45min
Air India
£604
Best option
London Heathrow
Sydney
Outbound
20/04/26
direct
BA0015
22h 45min
Return
07/05/26
direct
BA0016
23h 45min
British Airways ?
£1,010
London Heathrow
Sydney
Please note: transfer for connecting flight
Outbound
27/12/25
1 Stopover (SIN)
QF0002, QF0002
23h 25min
Return
16/01/26
1 Stopover (SIN)
SQ0212, QF0001
32h 10min
Qantas Airways
£18,135
London Heathrow
Sydney
Outbound
23/04/26
1 Stopover (PEK)
CA0856, CA0173
31h 10min
Return
10/05/26
1 Stopover (PEK)
CA0174, CA0937
31h 05min
Air China
£626
London Heathrow
Sydney
Outbound
02/03/26
1 Stopover (DEL)
AI0112, AI0302
43h 15min
Return
15/03/26
1 Stopover (DEL)
AI0301, AI2017
33h 35min
Air India ?
£629
London Heathrow
Sydney
Outbound
23/04/26
1 Stopover (PEK)
CA0856, CA0173
31h 10min
Return
10/05/26
1 Stopover (PEK)
CA0174, CA0855
33h 50min
Air China
£629
London Heathrow
Sydney
Outbound
23/04/26
1 Stopover (PEK)
CA0856, CA0173
31h 10min
Return
10/05/26
1 Stopover (PEK)
CA0174, CA0855
33h 50min
Air China
£631
London Heathrow
Sydney
Outbound
23/04/26
1 Stopover (PEK)
CA0856, CA0173
31h 10min
Return
10/05/26
1 Stopover (PEK)
CA0174, CA0855
33h 50min
Air China
£636
London Heathrow
Sydney
Outbound
23/04/26
1 Stopover (PEK)
CA0856, CA0173
31h 10min
Return
10/05/26
1 Stopover (PEK)
CA0174, CA0937
31h 05min
Air China
£652
Prices based on recent searches, subject to last-minute changes
Page 1 / 8

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 GBP
60 %
1 stopover Dubai
28h 15min, from 1 277 GBP
20 %
1 stopover Guangzhou Baiyun
25h 15min, from 1 012 GBP
13 %

Important flight information

Flight information: London Heathrow - Sydney

Cheapest outbound flight from 694,78 GBP
Outbound and return from 603,20 GBP
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
Popular destinations for onward travel
Flight destinations with a similar price