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
11/09/25
2 Stopovers (ATL, LAX)
F93511, AA1225, QF4112
30h 56min
Return
12/07/25
1 Stopover (SFO)
UA0830, UA2356
21h 24min
Frontier Airlines, American Airlines, Qantas Airways ?
$994
Best option
Boston
Sydney
Outbound
02/13/26
1 Stopover (LAX)
UA0333, UA0839
22h 58min
Return
02/26/26
1 Stopover (YYZ)
AC0034, AC8690
38h 37min
United Airlines ?
$1,239
Boston
Sydney
Outbound
11/09/25
2 Stopovers (DEN, LAX)
UA2297, UA1368, UA0839
25h 50min
Return
12/07/25
1 Stopover (IAH)
UA0100, UA1756
21h 53min
United Airlines
$1,407
Boston
Sydney
Outbound
11/09/25
2 Stopovers (ORD, HND)
NH7479, NH0111, NH0889
41h 35min
Return
12/07/25
2 Stopovers (YVR, YUL)
AC0034, AC0306, AC8604
38h 12min
ANA All Nippon Airways
$1,211
Boston
Sydney
Outbound
02/13/26
1 Stopover (AUH)
EY0008, EY0450
46h 55min
Return
02/26/26
2 Stopovers (YVR, YUL)
AC0034, AC0308, AC8604
38h 12min
Etihad Airways
$1,263
Boston
Sydney
Outbound
02/13/26
1 Stopover (AUH)
EY0008, EY0450
46h 55min
Return
02/26/26
2 Stopovers (YVR, YUL)
AC0034, AC0308, AC8604
38h 12min
Etihad Airways
$1,266
Boston
Sydney
Outbound
11/09/25
2 Stopovers (ORD, HND)
UA1732, NH0111, NH0879
30h 05min
Return
12/07/25
2 Stopovers (YVR, YUL)
AC0034, AC0304, AC8612
26h 07min
United Airlines, ANA All Nippon Airways ?
$1,322
Boston
Sydney
Outbound
02/13/26
1 Stopover (AUH)
EY0008, EY0450
46h 55min
Return
02/26/26
2 Stopovers (YVR, YYZ)
AC0034, AC0104, AC0772
27h 17min
Etihad Airways ?
$1,331
Boston
Sydney
Outbound
02/13/26
2 Stopovers (ORD, SFO)
UA1732, UA2166, UA0829
25h 42min
Return
02/26/26
1 Stopover (YYZ)
AC0034, AC0772
27h 17min
United Airlines ?
$1,343
Boston
Sydney
Outbound
11/09/25
3 Stopovers (SFO, SEA, HND)
AS0357, NH7285, NH0117, NH0889
57h 16min
Return
12/07/25
2 Stopovers (DFW, ATL)
AA7261, AA1051, F93086
26h 39min
Alaska Airlines, ANA All Nippon Airways ?
$1,394
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 $993.90
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
Flight destinations with a similar price