$661+ Cheap flights from Boston (BOS) to Sydney (SYD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SYD
Dec 13 — Dec 201
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Sydney with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Boston to Sydney
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Cheapest flights from Boston to SydneyExplore the most affordable flight options available from Boston to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2026.
Explore the most affordable flight options available from Boston to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2026.
This Bravofly deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/173:31 pm -
1 stop23h 24m
Sat 12/511:15 am -
1 stop21h 07m
Deal found 11/9![Qantas Airways logo]()
$1,356
This FlightHub deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:00 am -
1 stop29h 25m
Tue 11/1711:10 am -
1 stop21h 19m
Deal found 11/9![Qantas Airways logo]()
$1,361
This Delta deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1711:35 am -
1 stop28h 55m
Tue 12/221:35 pm -
1 stop26h 23m
Deal found 11/12![Delta logo]()
$1,386
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:32 pm -
2 stops27h 48m
Tue 11/179:15 am -
2 stops31h 31m
Deal found 11/9![United Airlines logo]()
$1,387
This Cheapflightsfares deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/66:00 am -
2 stops32h 50m
Tue 12/229:10 pm -
1 stop32h 45m
Deal found 11/10![Qatar Airways logo]()
$1,389
This Delta deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:50 am -
2 stops32h 40m
Tue 12/221:35 pm -
1 stop26h 23m
Deal found 11/13![Delta logo]()
$1,391
This Cheapflightsfares deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/68:40 pm -
1 stop29h 40m
Sun 12/139:10 pm -
1 stop32h 45m
Deal found 11/8![Qatar Airways logo]()
$1,393
This SmartFares deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:15 am -
2 stops35h 20m
Wed 11/182:05 pm -
2 stops33h 10m
Deal found 11/12![Air New Zealand logo]()
$1,400
Best flights from Boston to SydneyDiscover carefully curated flight deals from Boston to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 13, 2026.
Discover carefully curated flight deals from Boston to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 13, 2026.
This Delta deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/612:06 pm -
2 stops28h 24m
Tue 12/221:35 pm -
2 stops26h 23m
Deal found 11/8![Delta logo]()
$1,392
This Air New Zealand deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2810:44 am -
3 stops31h 56m
Mon 5/39:55 am -
2 stops27h 25m
Deal found 11/12![Multiple Airlines logo]()
$1,431
This Turkish Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/148:00 pm -
2 stops31h 25m
Thu 2/259:35 pm -
2 stops36h 30m
Deal found 11/11![Turkish Airlines logo]()
$1,490
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/222:25 pm -
2 stops26h 40m
Thu 3/411:50 am -
2 stops23h 09m
Deal found 11/9![United Airlines logo]()
$1,552
This Qatar Airways deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/249:40 pm -
2 stops32h 45m
Sat 4/105:45 pm -
2 stops35h 30m
Deal found 11/9![Qatar Airways logo]()
$1,614
This Delta deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1712:40 pm -
2 stops27h 50m
Wed 3/310:40 am -
2 stops24h 19m
Deal found 11/12![Delta logo]()
$1,451
This Air New Zealand deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/169:10 am -
3 stops33h 25m
Fri 2/2611:50 am -
2 stops35h 19m
Deal found 11/12![Multiple Airlines logo]()
$1,481
This Air New Zealand deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/49:09 am -
3 stops31h 26m
Mon 2/89:55 am -
3 stops40h 47m
Deal found 11/12![Multiple Airlines logo]()
$1,485
This Delta deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:45 am -
1 stop32h 45m
Wed 12/910:40 am -
1 stop26h 46m
Deal found 11/11![Delta logo]()
$1,738
This Air New Zealand deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/511:52 am -
3 stops28h 43m
Wed 2/172:05 pm -
3 stops36h 20m
Deal found 11/12![Multiple Airlines logo]()
$1,666
This Air New Zealand deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/137:40 am -
3 stops32h 55m
Fri 3/2611:50 am -
3 stops36h 26m
Deal found 11/12![Multiple Airlines logo]()
$1,772
This Air New Zealand deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/1411:31 am -
3 stops31h 04m
Thu 2/252:05 pm -
3 stops36h 20m
Deal found 11/10![Multiple Airlines logo]()
$1,965
Last-minute flights from Boston to SydneyDiscover last-minute flight deals from Boston to Sydney. Data last updated November 13, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Sydney. Data last updated November 13, 2026 and is based on user searches.
This SmartFares deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:15 am -
2 stops35h 20m
Wed 11/182:05 pm -
2 stops33h 10m
Deal found 11/12![Air New Zealand logo]()
$1,400
This Bravofly deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/173:31 pm -
1 stop23h 24m
Sat 12/511:15 am -
1 stop21h 07m
Deal found 11/9![Qantas Airways logo]()
$1,356
This Delta deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1711:35 am -
1 stop28h 55m
Tue 12/221:35 pm -
1 stop26h 23m
Deal found 11/12![Delta logo]()
$1,386
This Cheapflightsfares deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/66:00 am -
2 stops32h 50m
Tue 12/229:10 pm -
1 stop32h 45m
Deal found 11/10![Qatar Airways logo]()
$1,389
This Delta deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:50 am -
2 stops32h 40m
Tue 12/221:35 pm -
1 stop26h 23m
Deal found 11/13![Delta logo]()
$1,391
This Cheapflightsfares deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/68:40 pm -
1 stop29h 40m
Sun 12/139:10 pm -
1 stop32h 45m
Deal found 11/8![Qatar Airways logo]()
$1,393
One-way flights from Boston to SydneySearch for one-way flight options from Boston to Sydney. Find affordable one-way fares based on user searches. Data last updated November 13, 2026.
Search for one-way flight options from Boston to Sydney. Find affordable one-way fares based on user searches. Data last updated November 13, 2026.
This Booking.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:00 am -
2 stops31h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Alaska Airlines logo]()
$661
This BYOjet deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/99:00 am -
2 stops29h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Alaska Airlines logo]()
$665
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/137:08 am -
3 stops46h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Multiple Airlines logo]()
$688
This Expedia deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/312:21 pm -
1 stop26h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/12![Qantas Airways logo]()
$712
This American Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/233:15 pm -
2 stops25h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![American Airlines logo]()
$718
This oojo deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:21 pm -
1 stop24h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/13![Qantas Airways logo]()
$720
This Justfly.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:20 pm -
1 stop26h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Qantas Airways logo]()
$722
This FlightHub deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/134:30 pm -
1 stop24h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Qantas Airways logo]()
$723
This Justfly.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/282:15 pm -
1 stop25h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Qantas Airways logo]()
$724
This FlightHub deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/32:21 pm -
1 stop24h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/12![Qantas Airways logo]()
$726
This BYOjet deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/197:08 am -
2 stops32h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Alaska Airlines logo]()
$727
Find flight deals from Boston to Sydney
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,298 (FlightHub) |
One-way from | $661 (Booking.com) |
Popular in | December |
Cheapest in | May |
Average price | $1,459 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 13, 2026.
Use the filters below to find and compare flights from Boston to Sydney that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Sun 3/28
2:15 pm-6:30 am
1 stop25h 15m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$726
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Tue 12/1
8:27 am-9:20 am
3 stops32h 53m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$736
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Mon 11/23
5:30 am-9:20 am
3 stops35h 50m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$736
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Wed 2/17
5:45 am-6:20 am
3 stops32h 35m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$762
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Mon 2/15
5:45 am-9:20 am
3 stops35h 35m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$762
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Wed 2/3
12:26 pm-9:05 am
3 stops28h 39m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$762
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Wed 12/9
7:15 am-6:20 am
3 stops31h 05m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$762
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Thu 12/10
10:45 am-6:25 am
1 stop27h 40m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$811
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Thu 12/10
7:10 am-7:00 am
1 stop31h 50m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$822
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Sun 12/6
12:06 pm-8:30 am
2 stops28h 24m
Sydney Kingsford Smith
Tue 12/22
1:35 pm-11:58 pm
2 stops26h 23m
$1,392
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Boston to Sydney
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Sydney in November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boston-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Sydney flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-Sydney flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boston to Sydney
Have a flexible travel schedule? Discover the best time to fly to Sydney from Boston with our price prediction graph.
BOS-SYD
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boston to Sydney
Prices
More
How far ahead should I book a flight from Boston to Sydney?
To ensure you get the cheapest price possible for a flight from Boston to Sydney, you should look to book at least 1 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Boston to Sydney?
Currently, May is the cheapest month in which you can book a flight from Boston to Sydney (average of $1,260). Flying from Boston to Sydney in December is currently the most expensive (average of $1,854). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Boston to Sydney?
Airfare is below average for this route at the moment.
Boston to Sydney flights typically cost between $1,356 and $1,743 in February.The cheapest round-trip price found within the last 5 days was $1,298 on Multiple Airlines (Feb 7-Feb 20).
What’s the top layover airport for flights from Boston to Sydney?
Share of 1-stop round-trip flights from Boston to Sydney chosen by Cheapflights users in the past 12 months, using the same layover each way.
Los Angeles (LAX) – chosen by Cheapflights users on 67% of 1-stop itineraries from Boston to Sydney on Cheapflights.
What’s the cheapest layover airport for flights from Boston to Sydney?
Average round-trip fare for 1-stop flights from Boston to Sydney, chosen by Cheapflights users in the past 12 months, with the same layover each way.
San Francisco (SFO) is the most affordable 1-stop option, with an average round-trip price of $1,249.
What’s the fastest layover option from Boston to Sydney?
Shortest average travel time for 1-stop one-way flights from Boston to Sydney, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Los Angeles (LAX) have the shortest average one-way travel time for 1-stop routes: 23h 03m.
Which airport typically offers the quickest layover for flights from Boston to Sydney?
Average layover duration for 1-stop one-way flights from Boston to Sydney, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Los Angeles (LAX) offer the fastest connection on this route, with an average layover time of 1h 42m.
Reviews of airlines servicing Sydney
Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated November 13, 2026.
See what other customers who have flown with Air New Zealand,Delta, andQantas Airways from Boston to Sydney have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Entertainment
7.5
Overall
8.0
Boarding
8.2
Food
7.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Crew
8.5
Entertainment
7.5
Overall
8.0
Boarding
8.2
Food
7.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Crew
8.5
Entertainment
7.5
Overall
8.0
Boarding
8.2
Food
7.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Crew
8.5
Entertainment
7.5
Overall
8.0
Boarding
8.2
Food
7.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Crew
8.5
Entertainment
7.5
Overall
8.0
Boarding
8.2
Food
7.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Crew
8.5
Entertainment
7.5
Overall
8.0
Boarding
8.2
Food
7.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Related info for your journey
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Book flights to Sydney if you plan to visit one of these locationsParramatta
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Boston and Sydney flights
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Top 8 airlines flying from Boston to Sydney
Discover the top 8 airlines that operate flights from Boston to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$317 | Average$1,660 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$703 | Average$769 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,087 | Average$1,228 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,102 | Average$1,535 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,118 | Average$1,493 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$1,131 | Average$1,385 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,143 | Average$1,452 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,175 | Average$1,505 | FlexibilityNo cancel fee | On-time68% |