Our cheapest offers for flights from Boston to Sydney

Here you can compare cheap flights from Boston (BOS) 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
Boston Sydney	Outbound 06/08/25 1 Stopover (SFO) UA1008, UA0863 32h 35min	Return 06/12/25 1 Stopover (LAX) UA0842, UA2210 35h 43min	United Airlines		$740
Best option Boston Sydney	Outbound 06/08/25 1 Stopover (SFO) UA1008, UA0863 32h 35min	Return 06/12/25 1 Stopover (LAX) UA0842, UA1783 21h 48min	United Airlines	?	$762
Boston Sydney	Outbound 06/08/25 2 Stopovers (YUL, YVR) AC0753, AC0311, AC0033 26h 00min	Return 06/12/25 2 Stopovers (YVR, YYZ) AC0034, AC0124, AC8698 51h 16min	Air Canada		$747
Boston Sydney	Outbound 06/08/25 1 Stopover (LAX) UA0333, UA0839 22h 30min	Return 06/12/25 2 Stopovers (SFO, EWR) UA0870, UA2480, UA2098 36h 35min	United Airlines	?	$768
Boston Sydney	Outbound 06/08/25 1 Stopover (SFO) UA1008, UA0863 32h 35min	Return 06/12/25 1 Stopover (LAX) UA0842, UA1783 21h 48min	United Airlines	?	$818
Boston Sydney	Outbound 04/12/25 2 Stopovers (YUL, YVR) AC8605, AC0311, AC0033 30h 30min	Return 04/27/25 2 Stopovers (YVR, YUL) AC0034, AC0304, AC8604 38h 47min	Air Canada	?	$958
Boston Sydney	Outbound 04/21/25 2 Stopovers (YUL, YVR) AC8607, AC0311, AC0033 25h 40min	Return 05/19/25 2 Stopovers (YVR, YUL) AC0034, AC0312, AC8614 50h 44min	Air Canada		$1,091
Boston Sydney	Outbound 04/21/25 1 Stopover (SFO) UA1434, UA0863 29h 45min	Return 05/19/25 2 Stopovers (LAX, IAD) UA0842, UA1140, UA0688 24h 02min	United Airlines		$1,093
Boston Sydney	Outbound 04/21/25 2 Stopovers (DEN, LAX) UA0778, UA1368, UA0839 25h 30min	Return 05/19/25 2 Stopovers (SFO, ORD) UA0870, UA0793, UA1989 25h 37min	United Airlines	?	$1,116
Boston Sydney	Outbound 04/21/25 1 Stopover (SFO) UA1008, UA0863 32h 55min	Return 05/19/25 1 Stopover (SFO) UA0870, UA0332 23h 51min	United Airlines	?	$1,129

Tips and tricks to help you find cheap flights from Boston to Sydney

Favourite connection: via Los Angeles

62 % of booked tickets on this route are for flights with a transfer in Los Angeles.

Route

bookings

1 stopover Los Angeles International Airport, CA

22h 55min, from $ 1.328

62 %

2 stopovers New York - John F. Kennedy International Airport, NY Tokyo-Haneda International Airport

31h 16min, from $ 1.596

25 %

2 stopovers San Francisco International Airport, CA Auckland

35h 30min, from $ 1.376

12 %

Important flight information

Flight information: Boston - Sydney

Roundtrip from	$ 739,51
Distance	16269 km
Departure airport	Airport Boston Logan International Airport, MA (BOS)
Arrival airport	Airport Sydney-Kingsford Smith International Airport, NSW (SYD)
Destination country	Flights to Australia

Alternative flights to Sydney

Flight Louisville - Sydney from $ 1.021
Flight Los Angeles - Sydney from $ 744
Flight New York - Sydney from $ 1.074
Flight Tampa - Sydney from $ 1.142
Flight Honolulu - Sydney from $ 459
Flight San Francisco - Sydney from $ 1.017
Flight Atlanta - Sydney from $ 752
Flight Orlando - Sydney from $ 963
Flight New York - Sydney from $ 1.074

Flights from Boston to Sydney

Our cheapest offers for flights from Boston to Sydney

Boston Logan International Airport, MA

Sydney-Kingsford Smith International Airport, NSW

Tips and tricks to help you find cheap flights from Boston to Sydney

Important flight information

Flight information: Boston - Sydney

Alternative flights to Sydney

Flight destinations with a similar price