Flights from Boston to Sydney

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 Shop 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
Pay attention to transfer at connecting flight
Outbound
09/23/25
3 Stopovers (YYZ, YVR, HNL)
AC0767, AC0109, WS1864, JQ0004
42h 40min
Return
09/30/25
3 Stopovers (BNE, YVR, YUL)
JQ0810, AC0036, AC0304, AC8614
29h 22min
Air Canada, Westjet, Jetstar Airways
$1,063
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
11/03/25
2 Stopovers (SFO, MNL)
UA1008, UA0809, 5J0039
34h 45min
Return
11/12/25
1 Stopover (IAH)
UA0100, UA1076
27h 30min
United Airlines, CEBU Pacific Air ?
$1,108
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
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Boston to Sydney

Favorite airline: e.g. American Airlines, Air Canada
The favorite airline for flights from Boston to Sydney is American Airlines.
American Airlines
20 %
Air Canada
20 %
Air New Zealand
16 %
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 destinations with a similar price