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	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 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 25/05/26 1 Stopover (CAN) CZ0304, CZ0301 36h 30min	Return 07/06/26 1 Stopover (CAN) CZ0326, CZ0303 41h 55min	China Southern Airlines	£640
London Heathrow Sydney	Outbound 25/05/26 1 Stopover (CAN) CZ0304, CZ0301 36h 30min	Return 07/06/26 2 Stopovers (CAN, PKX) CZ0302, CZ3099, CZ0673 29h 20min	China Southern Airlines	£648
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
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
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
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	£678

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 £ 594
Flight London Heathrow - Brisbane from £ 601
Flight London Heathrow - Adelaide from £ 769
Flight London Heathrow - Perth from £ 664
Flight London Heathrow - Cairns from £ 583

Alternative flights to Sydney

Flight London - Sydney from £ 359
Flight Birmingham - Sydney from £ 848
Flight London Gatwick - Sydney from £ 385
Flight London City - Sydney from £ 951
Flight Manchester - Sydney from £ 535

Popular destinations for onward travel

Flight destinations with a similar price

Flight London Heathrow - Lahore from £ 338
Flight London Heathrow - Hong Kong from £ 341
Flight London Heathrow - Mumbai from £ 356
Flight London Heathrow - Los Angeles from £ 379
Flight London Heathrow - Miami from £ 387
Flight London Heathrow - Johannesburg from £ 378
Flight London Heathrow - Entebbe from £ 342
Flight London Heathrow - Dammam from £ 372
Flight London Heathrow - Osaka - Kansai from £ 352
Flight London Heathrow - Tokyo Narita from £ 379