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	Baggage	Price
London Heathrow Sydney	Outbound 21/04/26 1 Stopover (PEK) CA0856, CA0173 31h 10min	Return -	Air China		£359
Best option London Heathrow Sydney	Outbound 30/04/26 1 Stopover (PEK) CA0856, CA0173 31h 10min	Return 07/05/26 1 Stopover (PEK) CA0174, CA0855 33h 45min	Air China		£568
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
London Heathrow Sydney	Outbound 30/04/26 1 Stopover (PEK) CA0856, CA0173 31h 10min	Return 07/05/26 1 Stopover (PEK) CA0174, CA0855 33h 45min	Air China		£625
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 30/04/26 1 Stopover (CAN) CZ0304, CZ0301 36h 30min	Return 07/05/26 1 Stopover (CAN) CZ0326, CZ0303 41h 55min	China Southern Airlines		£643 found 2 days ago
London Heathrow Sydney	Outbound 30/04/26 1 Stopover (CAN) CZ0304, CZ0325 25h 15min	Return 07/05/26 1 Stopover (CAN) CZ0326, CZ0303 41h 55min	China Southern Airlines		£651 found 2 days ago
London Heathrow Sydney	Outbound 30/04/26 1 Stopover (CAN) CZ0304, CZ8091 29h 25min	Return 07/05/26 1 Stopover (CAN) CZ0302, CZ0303 30h 15min	China Southern Airlines		£656 found 2 days ago
London Heathrow Sydney	Outbound 30/04/26 1 Stopover (CAN) CZ0304, CZ0301 36h 30min	Return 07/05/26 1 Stopover (CAN) CZ8092, CZ0303 37h 45min	China Southern Airlines		£660
London Heathrow Sydney	Outbound 30/04/26 1 Stopover (CAN) CZ0304, CZ0325 25h 15min	Return 07/05/26 1 Stopover (CAN) CZ0302, CZ0303 30h 15min	China Southern Airlines		£667

Tips and tricks to help you find cheap flights from London Heathrow to Sydney

Important flight information

Flight information: London Heathrow - Sydney

Cheapest outbound flight from	359,00 £
Outbound and return from	567,69 £
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

Flight London Heathrow - Melbourne from 745 £
Flight London Heathrow - Brisbane from 573 £
Flight London Heathrow - Adelaide from 909 £
Flight London Heathrow - Perth from 669 £
Flight London Heathrow - Cairns from 583 £

Alternative flights to Sydney

Flight London - Sydney from 359 £
Flight Manchester - Sydney from 535 £
Flight London Gatwick - Sydney from 390 £
Flight Birmingham - Sydney from 856 £
Flight London City - Sydney from 1.020 £

Popular destinations for onward travel

Flight destinations with a similar price

Flight London Heathrow - Los Angeles from 379 £
Flight London Heathrow - Miami from 356 £
Flight London Heathrow - Nairobi from 361 £
Flight London Heathrow - Bangalore from 340 £
Flight London Heathrow - Goa from 349 £
Flight London Heathrow - Kefalonia Kefallinia from 362 £
Flight London Heathrow - Abuja from 344 £
Flight London Heathrow - Abu Dhabi from 329 £
Flight London Heathrow - Colombo from 330 £
Flight London Heathrow - Doha from 368 £