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 06/18/25 2 Stopovers (YUL, YVR) AC0751, AC0307, AC0033 31h 00min	Return 07/15/25 2 Stopovers (YVR, YYZ) AC0034, AC0110, AC0756 27h 18min	Air Canada	?	$1,137
Boston Sydney	Outbound 08/28/25 1 Stopover (YYZ) AC0769, AC0033 30h 40min	Return 09/19/25 2 Stopovers (YVR, YUL) AC0034, AC0306, AC8614 26h 50min	Air Canada	?	$1,144
Boston Sydney	Outbound 06/18/25 2 Stopovers (YYZ, YVR) AC0769, AC0121, AC0033 30h 40min	Return 07/15/25 2 Stopovers (YVR, YUL) AC0034, AC0312, AC0748 38h 15min	Air Canada	?	$1,162
Boston Sydney	Outbound 09/04/25 2 Stopovers (LAX, AKL) B60387, NZ0005, NZ0101 28h 00min	Return 09/28/25 2 Stopovers (AKL, LAX) NZ0104, NZ0006, B60988 33h 15min	JetBlue Airways, Air New Zealand	?	$1,197 found 3 days ago
Boston Sydney	Outbound 09/19/25 2 Stopovers (LAX, NAN) DL0479, FJ0811, FJ0911 39h 15min	Return 09/29/25 2 Stopovers (NAN, LAX) FJ0910, FJ0810, DL0507 30h 43min	Delta Air Lines, Fiji Airways	?	$1,202

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 Los Angeles - Sydney from $ 801
Flight Atlanta - Sydney from $ 778
Flight Orlando - Sydney from $ 1.078
Flight New York - Sydney from $ 1.292
Flight Tampa - Sydney from $ 1.235
Flight Louisville - Sydney from $ 1.394
Flight San Francisco - Sydney from $ 1.019
Flight Honolulu - Sydney from $ 731
Flight New York - Sydney from $ 1.292

Flight destinations with a similar price

Flight Boston - Amman from $ 781
Flight Boston - Riyadh from $ 762