Our cheapest offers for flights from Sydney to London Heathrow

Here you can compare cheap flights from Sydney (SYD) to London Heathrow (LHR) 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 London Heathrow. Prices and availability may change at any time.

	Outbound	Return	Airlines	Baggage	Price
Sydney London Heathrow	Outbound 27/09/25 2 Stopovers (AVV, MEL, CAN) JQ0613, CZ0344, CZ0303 54h 40min	Return 15/10/25 2 Stopovers (CAN, MEL, AVV) CZ0304, CZ0321, JQ0612 38h 10min	Jetstar Airways, China Southern Airlines		£951
Sydney London Heathrow	Outbound 08/12/25 2 Stopovers (LAX, ORD) UA0842, UA1946, UA0929 29h 35min	Return 24/12/25 1 Stopover (SFO) UA0949, UA0863 32h 30min	United Airlines		£991
Best option Sydney London Heathrow	Outbound 08/12/25 1 Stopover (DEL) AI0301, AI0111 26h 10min	Return 24/12/25 1 Stopover (DEL) AI0162, AI0302 23h 05min	Air India		£1,032
Sydney London Heathrow	Outbound 27/09/25 1 Stopover (AUH) EY0455, EY0061 42h 30min	Return 15/10/25 2 Stopovers (BWN, MEL) BI0098, BI0005, QF0418 30h 10min	Etihad Airways		£1,004
Sydney London Heathrow	Outbound 08/12/25 1 Stopover (DEL) AI0301, AI2017 34h 00min	Return 24/12/25 1 Stopover (DEL) AI0112, AI0302 42h 20min	Air India		£1,020
Sydney London Heathrow	Outbound 08/12/25 1 Stopover (DEL) AI0301, AI0111 26h 10min	Return 24/12/25 1 Stopover (DEL) AI0162, AI0302 23h 05min	Air India		£1,054
Sydney London Heathrow	Outbound 08/12/25 1 Stopover (CAN) CZ0302, CZ0303 31h 15min	Return 24/12/25 1 Stopover (CAN) CZ0304, CZ0301 35h 20min	China Southern Airlines	?	£1,058
Sydney London Heathrow	Outbound 27/09/25 1 Stopover (BKK) TG0476, TG0910 30h 15min	Return 15/10/25 1 Stopover (BKK) TG0917, TG0471 27h 55min	Thai Airways		£1,068
Sydney London Heathrow	Outbound 08/12/25 1 Stopover (DEL) AI0301, AI0111 26h 10min	Return 24/12/25 1 Stopover (DEL) AI0162, AI0302 23h 05min	Air India	?	£1,078
Sydney London Heathrow	Outbound 27/09/25 1 Stopover (BKK) TG0476, TG0910 30h 15min	Return 15/10/25 1 Stopover (BKK) TG0917, TG0475 38h 05min	Thai Airways	?	£1,090

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

Important flight information

Flight information: Sydney - London Heathrow

Outbound and return from	£ 950,30
Flight duration	min. 22:00 / max. 22:25
Return flight duration	min. 20:30/ max. 21:00
Distance	17039 km
Flights per week	16
Departure airport	Airport Sydney Kingsford Smith (SYD)
Departure country	Flights from Australia
Arrival airport	Airport London Heathrow (LHR)
Destination country	Flights to United Kingdom

Alternative flights to London Heathrow

Flight Brisbane - London Heathrow from £ 707
Flight Perth - London Heathrow from £ 896

Popular destinations for onward travel

Flight London Heathrow - Dubai from £ 271
Flight London Heathrow - Vienna from £ 117
Flight London Heathrow - Dhaka from £ 560
Flight London Heathrow - Toronto from £ 323
Flight London Heathrow - Geneva from £ 110
Flight London Heathrow - Zurich from £ 120
Flight London Heathrow - Edinburgh from £ 72
Flight London Heathrow - Manchester from £ 41
Flight London Heathrow - Newcastle from £ 53
Flight London Heathrow - Glasgow from £ 89