Cheap Flights from Boston, MA to Sydney from $609

Return flight: Sydney – Boston

On Cheapflightsplus.com you will find 1000 connecting flights from Boston to Sydney. You can compare airfare deals from 37 airlines and multiple travel sites from $609, book and save on cheap plane tickets and last minute offers. Also check out BOS-SYD flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Boston to Sydney Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $609 (one-way), $1044 (round-trip).
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Full flight schedule will help you in detecting at what time planes fly from Boston to Sydney. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
01:40 — 20:45
+1 day
01:40 — 05:00 CX811 Cathay Pacific
Boston — Hong Kong
3h 45m stop
09:10 — 20:10 CX139 Cathay Pacific
Hong Kong — Sydney
28h 5m
including layover
Find flight
from$1452
01:40 — 06:10
+2 days
00:30 — 05:10 CX811 Cathay Pacific
Boston — Hong Kong
14h 10m stop
19:10 — 07:15 CX111 Cathay Pacific
Hong Kong — Sydney
38h 30m
including layover
Find flight
from$1452
06:00 — 07:20
+2 days
06:00 — 07:59 AC8689 Air Canada
Boston — Toronto
10h 35m stop
18:45 — 07:20 AC33 Air Canada
Toronto — Sydney
35h 20m
including layover
Find flight
from$906
06:00 — 07:20
+2 days
06:00 — 07:55 AC767 Air Canada
Boston — Toronto
10h 49m stop
18:45 — 07:20 AC33 Air Canada
Toronto — Sydney
35h 20m
including layover
Find flight
from$1086
07:00 — 06:05
+2 days
07:00 — 10:49 AS357 Alaska Airlines
Boston — San Francisco
11h 11m stop
22:00 — 06:05 QF74 Qantas
San Francisco — Sydney
33h 5m
including layover
Find flight
from$965
07:35 — 07:00
+2 days
07:34 — 10:45 UA311 United Airlines
Boston — Los Angeles
12h 3m stop
22:50 — 07:00 UA839 United Airlines
Los Angeles — Sydney
33h 25m
including layover
Find flight
from$1119
08:05 — 07:05
+2 days
08:00 — 11:35 QF4482 Qantas
Boston — Los Angeles
11h 34m stop
22:50 — 07:05 QF4112 Qantas
Los Angeles — Sydney
33h
including layover
Find flight
from$945
08:15 — 07:55
+2 days
08:00 — 11:50 UA1008 United Airlines
Boston — San Francisco
11h 13m stop
22:55 — 09:15 UA863 United Airlines
San Francisco — Sydney
32h 40m
including layover
Find flight
from$953
10:30 — 07:55
+2 days
10:30 — 14:01 UA2279 United Airlines
Boston — San Francisco
8h 59m stop
23:00 — 06:55 UA863 United Airlines
San Francisco — Sydney
30h 25m
including layover
Find flight
from$953
10:40 — 07:20
+2 days
10:40 — 12:34 AC769 Air Canada
Boston — Toronto
6h 10m stop
18:40 — 07:20 AC33 Air Canada
Toronto — Sydney
30h 40m
including layover
Find flight
from$1086
11:00 — 06:55
+2 days
11:00 — 14:31 UA1482 United Airlines
Boston — San Francisco
8h 29m stop
23:00 — 06:55 UA863 United Airlines
San Francisco — Sydney
29h 55m
including layover
Find flight
from$960
11:45 — 07:00
+2 days
11:45 — 14:55 UA642 United Airlines
Boston — Los Angeles
7h 50m stop
22:45 — 07:00 UA839 United Airlines
Los Angeles — Sydney
29h 15m
including layover
Find flight
from$953
12:15 — 07:20
+2 days
12:15 — 14:22 AC8693 Air Canada
Boston — Toronto
4h 33m stop
18:40 — 07:20 AC33 Air Canada
Toronto — Sydney
29h 5m
including layover
Find flight
from$1086
12:40 — 06:55
+2 days
12:40 — 15:55 QF3284 Qantas
Boston — Dallas
6h 45m stop
22:40 — 06:55 QF8 Qantas
Dallas — Sydney
28h 15m
including layover
Find flight
from$946
13:48 — 06:05
+2 days
14:00 — 17:31 UA1074 United Airlines
Boston — San Francisco
3h 43m stop
22:00 — 06:05 QF74 Qantas
San Francisco — Sydney
25h 17m
including layover
Find flight
from$1167
14:00 — 06:55
+2 days
14:00 — 17:31 UA1074 United Airlines
Boston — San Francisco
5h 29m stop
23:00 — 06:55 UA863 United Airlines
San Francisco — Sydney
26h 55m
including layover
Find flight
from$959
14:44 — 06:55
+2 days
14:44 — 18:01 QF4563 Qantas
Boston — Dallas
4h 39m stop
22:40 — 06:55 QF8 Qantas
Dallas — Sydney
26h 11m
including layover
Find flight
from$946
16:30 — 16:55
+2 days
16:30 — 12:55 EY8 Etihad Airways
Boston — Abu Dhabi
8h 20m stop
21:15 — 16:55 EY454 Etihad Airways
Abu Dhabi — Sydney
34h 25m
including layover
Find flight
from$849
16:30 — 06:10
+3 days
16:30 — 12:55 EY8 Etihad Airways
Boston — Abu Dhabi
21h 30m stop
10:25 — 06:10 EY450 Etihad Airways
Abu Dhabi — Sydney
47h 40m
including layover
Find flight
from$849
18:12 — 07:05
+2 days
18:12 — 21:31 QF3015 Qantas
Boston — Los Angeles
1h 24m stop
22:55 — 07:05 QF4112 Qantas
Los Angeles — Sydney
22h 53m
including layover
Find flight
from$943
18:30 — 07:00
+2 days
18:10 — 21:48 UA333 United Airlines
Boston — Los Angeles
58m stop
22:40 — 09:05 UA839 United Airlines
Los Angeles — Sydney
22h 30m
including layover
Find flight
from$845
19:00 — 07:20
+3 days
19:00 — 21:01 AC8699 Air Canada
Boston — Toronto
21h 44m stop
18:45 — 07:20 AC33 Air Canada
Toronto — Sydney
46h 20m
including layover
Find flight
from$906
19:00 — 07:20
+3 days
19:00 — 20:54 AC757 Air Canada
Boston — Toronto
21h 53m stop
18:40 — 07:20 AC33 Air Canada
Toronto — Sydney
46h 20m
including layover
Find flight
from$1020
20:19 — 06:05
+3 days
20:19 — 23:59 HA4812 Hawaiian Airlines
Boston — San Francisco
22h 1m stop
22:00 — 06:05 QF74 Qantas
San Francisco — Sydney
43h 46m
including layover
Find flight
from$1076
20:23 — 06:05
+3 days
20:23 — 23:52 HA4827 Hawaiian Airlines
Boston — San Francisco
22h 8m stop
22:00 — 06:05 QF74 Qantas
San Francisco — Sydney
43h 42m
including layover
Find flight
from$1016
21:35 — 19:00
+2 days
21:35 — 13:55 TK82 Turkish Airlines
Boston — Istanbul
1h 55m stop
15:50 — 19:00 TK174 Turkish Airlines
Istanbul — Sydney
31h 25m
including layover
Find flight
from$1113
22:00 — 17:10
+2 days
22:00 — 17:05 QR744 Qatar Airways
Boston — Doha
3h 15m stop
23:35 — 20:50 QR908 Qatar Airways
Doha — Sydney
29h 10m
including layover
Find flight
from$1022
22:00 — 06:15
+3 days
22:00 — 16:55 QR744 Qatar Airways
Boston — Doha
16h 20m stop
09:15 — 06:15 QR8401 Qatar Airways
Doha — Sydney
42h 15m
including layover
Find flight
from$1032
23:05 — 17:20
+2 days
22:10 — 19:20 EK238 Emirates
Boston — Dubai
2h 10m stop
21:45 — 18:35 EK416 Emirates
Dubai — Sydney
28h 15m
including layover
Find flight
from$1371
23:05 — 22:05
+2 days
23:05 — 19:20 EK238 Emirates
Boston — Dubai
6h 55m stop
02:15 — 22:05 EK414 Emirates
Dubai — Sydney
33h
including layover
Find flight
from$1371
*Departure and arrival times - local. Updated on August 18, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Boston to Sydney depends on and how to choose the most interesting flight option for you.

Distance between Boston and Sydney is 16251 miles. Time difference between the cities is 3h. Airplanes depart 01:40 to 23:40 from 4 Boston airports and arrive 01:40 to 23:40 to 5 Sydney airports. Average flight time is 35h 20m.

  • The fastest flight 22h 29m
  • Average flight time 35h 20m
  • The earliest flight 01:40
  • The latest flight 23:40
  • Distance 10098 ml

The cheapest months to travel to Sydney are august (from 609 $), june (from 672 $), july (from 780 $).

The most expensive months are december (from 1 463 $), january (from 1 343 $), february (from 1 333 $).

What is the lowest airfare Boston to Sydney?

The cheapest plane ticket found by our users is $609. This airfare is for economy class on one-way KE92 flight by Korean Air for August 28, 2025 which leaves Logan in Boston at 12:55 am and arrives at Sydney Kingsford Smith at 06:10.

Economy class
$609
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Business class
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First class
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Popular Airlines on the Route

The flight Boston — Sydney is served by 37 regular airlines and 8 low-cost airlines. Most of the flights on this route are operated by Condor Airlines - 1 departures per week at the price of from $ 1453 . And the most expensive tickets are offered by Air Canada airline - from $ 5534.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 1000 flights with layovers on the route. The fastest connecting flight is QF4501 by Qantas takes 22h 29m and the cheapest is KE92 by Korean Air for $609.

  • DE - Condor Airlines
    from $1453
    Find
  • JL - Japan Airlines - JAL
    from $780
    Find
  • VY - Vueling
    from $1200
    Find
  • FI - Icelandair
    from $1767
    Find
  • FJ - Air Pacific
    from $973
    Find
  • UA - United Airlines
    from $845
    Find
  • NZ - Air New Zealand Limited
    from $1175
    Find
  • LX - SWISS International Air Lines
    from $1376
    Find
  • QF - Qantas
    from $943
    Find
  • IB - Iberia
    from $1099
    Find
  • KE - Korean Air
    from $609
    Find
  • MH - Malaysia Airlines
    from $1514
    Find
See more connecting flights

Airports

You can fly from Boston to Sydney from 4 airports (Boston City Heliport, Boston RT128 Rail, Boston South Rail, Logan).

Boston airports

  • Boston City Heliport-JBC
    Find
  • Boston RT128 Rail-ZRU
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  • Boston South Rail-ZTO
    Find
  • Logan-BOS
    from $609
    Find

Sydney airports

  • Bankstown-BWU
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  • Palm Beach SPB-LBH
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  • Rose Bay-RSE
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  • Kingsford Smith-SYD
    Find
  • Sydney West-SWZ
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How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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