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 Pay attention to transfer at connecting flight	Outbound 27/01/26 3 Stopovers (VIE, SIN, DPS) OS0340, TR0711, TR0282, GA0714 39h 10min	Return 10/02/26 2 Stopovers (SIN, KUL) TR0003, MH0610, MH0002 26h 15min	Austrian Airlines, Scoot, Garuda Indonesia		£936
London Heathrow Sydney	Outbound 19/04/26 3 Stopovers (VIE, BKK, SGN) OS0340, OS0005, VJ0806, VJ0085 64h 20min	Return 05/05/26 2 Stopovers (SIN, ATH) TR0003, TR0720, BA0631 41h 00min	Austrian Airlines, VietJet Air	?	£844
London Heathrow Sydney	Outbound 18/04/26 3 Stopovers (VIE, BKK, SGN) OS0338, OS0005, VJ0806, VJ0085 74h 50min	Return 04/05/26 3 Stopovers (SIN, SZB, KUL, DXB) TR0013, TR0462, EK0347, EK0003 54h 55min	Austrian Airlines, VietJet Air	?	£922
London Heathrow Sydney	Outbound 27/01/26 1 Stopover (SFO) OS0949, OS0829 29h 35min	Return 10/02/26 1 Stopover (SFO) OS0870, OS0901 30h 15min	Austrian Airlines		£956

Important flight information

Flight information: London Heathrow - Sydney

Cheapest outbound flight from	£ 950,12
Outbound and return from	£ 612,96
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

Our cheapest offers for flights from London Heathrow to Sydney

London Heathrow

Sydney Kingsford Smith

Austrian Airlines

Important flight information

Flight information: London Heathrow - Sydney

Alternative routes to Australia

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