$669+ 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SYD
Nov 23 — Nov 301
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Sydney with Cheapflights
1. Tell us where you want to go
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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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 October 24, 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 October 24, 2026.
This KAYAK deal was found by Cheapflights users on 10/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:30 am -
2 stops36h 05m
Thu 11/2611:20 am -
2 stops38h 28m
Deal found 10/20![Air New Zealand logo]()
$1,297
This oojo deal was found by Cheapflights users on 10/20. 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.
Fri 10/235:45 pm -
1 stop23h 20m
Mon 11/211:10 am -
1 stop21h 19m
Deal found 10/20![Qantas Airways logo]()
$1,298
This oojo deal was found by Cheapflights users on 10/19. 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.
Wed 11/112:25 pm -
1 stop24h 00m
Sat 11/2111:10 am -
1 stop26h 10m
Deal found 10/19![Qantas Airways logo]()
$1,299
This BusinessClass deal was found by Cheapflights users on 10/20. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/133:30 pm -
2 stops26h 05m
Sat 11/2111:20 am -
2 stops38h 28m
Deal found 10/20![Air New Zealand logo]()
$1,300
This Air Canada deal was found by Cheapflights users on 10/21. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:30 am -
3 stops36h 05m
Wed 11/411:20 am -
3 stops38h 28m
Deal found 10/21![Air Canada logo]()
$1,301
This Ovago deal was found by Cheapflights users on 10/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/133:30 pm -
2 stops26h 05m
Fri 11/2011:20 am -
1 stop39h 02m
Deal found 10/20![Air New Zealand logo]()
$1,303
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/105:44 pm -
2 stops34h 01m
Sat 11/219:40 pm -
2 stops47h 44m
Deal found 10/20![Multiple Airlines logo]()
$1,304
This BusinessClass deal was found by Cheapflights users on 10/22. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/83:10 pm -
1 stop26h 25m
Sun 11/2211:20 am -
2 stops38h 28m
Deal found 10/22![Air New Zealand logo]()
$1,306
This Ovago deal was found by Cheapflights users on 10/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:45 am -
1 stop35h 50m
Fri 11/2011:20 am -
1 stop27h 17m
Deal found 10/20![Multiple Airlines logo]()
$1,307
This Delta deal was found by Cheapflights users on 10/22. 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.
Sat 11/76:55 pm -
1 stop45h 35m
Tue 11/2410:40 am -
2 stops48h 10m
Deal found 10/22![Delta logo]()
$1,309
This FlightHub deal was found by Cheapflights users on 10/20. 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.
Sun 10/255:30 am -
2 stops36h 05m
Thu 11/511:20 am -
2 stops26h 08m
Deal found 10/20![Air Canada logo]()
$1,311
This Air Canada deal was found by Cheapflights users on 10/20. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1310:25 am -
2 stops31h 10m
Wed 11/2511:20 am -
2 stops38h 28m
Deal found 10/20![Air Canada logo]()
$1,316
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 October 24, 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 October 24, 2026.
This JetBlue deal was found by Cheapflights users on 10/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/228:40 pm -
1 stop30h 40m
Sun 3/79:10 pm -
1 stop32h 45m
Deal found 10/22![JetBlue logo]()
$1,321
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Wed 11/116:01 pm -
1 stop23h 19m
Sat 11/2111:50 am -
1 stop20h 59m
Deal found 10/20![United Airlines logo]()
$1,324
This Delta deal was found by Cheapflights users on 10/20. 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 11/154:15 pm -
1 stop24h 15m
Fri 11/2010:40 am -
1 stop24h 40m
Deal found 10/20![Delta logo]()
$1,324
This Turkish Airlines deal was found by Cheapflights users on 10/23. 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.
Fri 1/228:00 pm -
2 stops31h 25m
Sun 3/79:35 pm -
2 stops37h 30m
Deal found 10/23![Turkish Airlines logo]()
$1,623
This Emirates deal was found by Cheapflights users on 10/23. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:10 pm -
1 stop28h 25m
Wed 11/119:45 pm -
1 stop32h 10m
Deal found 10/23![Emirates logo]()
$1,768
This Air New Zealand deal was found by Cheapflights users on 10/23. 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 1/209:09 am -
3 stops33h 26m
Sun 1/319:55 am -
3 stops40h 43m
Deal found 10/23![Multiple Airlines logo]()
$1,819
This United Airlines deal was found by Cheapflights users on 10/22. 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 1/221:48 pm -
1 stop24h 32m
Sat 3/611:50 am -
2 stops28h 13m
Deal found 10/22![United Airlines logo]()
$1,437
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Wed 1/139:09 am -
2 stops32h 11m
Tue 1/261:20 pm -
1 stop22h 16m
Deal found 10/20![United Airlines logo]()
$1,628
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Sat 11/215:17 pm -
1 stop45h 43m
Sat 11/289:10 am -
1 stop21h 17m
Deal found 10/22![United Airlines logo]()
$1,731
This Air New Zealand deal was found by Cheapflights users on 10/20. 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 1/139:09 am -
3 stops33h 26m
Sun 1/3111:50 am -
2 stops35h 30m
Deal found 10/20![Multiple Airlines logo]()
$2,189
This Emirates deal was found by Cheapflights users on 10/22. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/2210:10 pm -
1 stop40h 50m
Fri 3/54:30 pm -
2 stops37h 25m
Deal found 10/22![Emirates logo]()
$2,355
This Air New Zealand deal was found by Cheapflights users on 10/21. 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.
Mon 1/119:09 am -
3 stops33h 26m
Mon 1/252:05 pm -
3 stops36h 37m
Deal found 10/21![Multiple Airlines logo]()
$2,199
Last-minute flights from Boston to SydneyDiscover last-minute flight deals from Boston to Sydney. Data last updated October 24, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Sydney. Data last updated October 24, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 10/20. 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.
Fri 10/235:45 pm -
1 stop23h 20m
Tue 11/1011:10 am -
1 stop21h 19m
Deal found 10/20![Qantas Airways logo]()
$1,298
This FlightHub deal was found by Cheapflights users on 10/20. 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.
Sun 10/255:30 am -
2 stops36h 05m
Thu 11/511:20 am -
2 stops26h 08m
Deal found 10/20![Air Canada logo]()
$1,311
This Air Canada deal was found by Cheapflights users on 10/21. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:30 am -
3 stops36h 05m
Wed 11/411:20 am -
3 stops38h 28m
Deal found 10/21![Air Canada logo]()
$1,301
This Delta deal was found by Cheapflights users on 10/22. 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.
Sat 11/76:55 pm -
1 stop45h 35m
Tue 11/2410:40 am -
2 stops48h 10m
Deal found 10/22![Delta logo]()
$1,309
This BusinessClass deal was found by Cheapflights users on 10/22. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/83:10 pm -
1 stop26h 25m
Sun 11/2211:20 am -
2 stops38h 28m
Deal found 10/22![Air New Zealand logo]()
$1,306
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/105:44 pm -
2 stops34h 01m
Sat 11/219:40 pm -
2 stops47h 44m
Deal found 10/20![Multiple Airlines logo]()
$1,304
This oojo deal was found by Cheapflights users on 10/19. 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.
Wed 11/112:25 pm -
1 stop24h 00m
Sat 11/2111:10 am -
1 stop26h 10m
Deal found 10/19![Qantas Airways logo]()
$1,299
This BusinessClass deal was found by Cheapflights users on 10/20. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/133:30 pm -
2 stops26h 05m
Sat 11/2111:20 am -
2 stops38h 28m
Deal found 10/20![Air New Zealand logo]()
$1,300
This Ovago deal was found by Cheapflights users on 10/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/133:30 pm -
2 stops26h 05m
Fri 11/2011:20 am -
1 stop39h 02m
Deal found 10/20![Air New Zealand logo]()
$1,303
This Ovago deal was found by Cheapflights users on 10/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:45 am -
1 stop35h 50m
Fri 11/2011:20 am -
1 stop27h 17m
Deal found 10/20![Multiple Airlines logo]()
$1,307
This Air Canada deal was found by Cheapflights users on 10/20. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1310:25 am -
2 stops31h 10m
Wed 11/2511:20 am -
2 stops38h 28m
Deal found 10/20![Air Canada logo]()
$1,316
This KAYAK deal was found by Cheapflights users on 10/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:30 am -
2 stops36h 05m
Thu 11/2611:20 am -
2 stops38h 28m
Deal found 10/20![Air New Zealand logo]()
$1,297
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 October 24, 2026.
Search for one-way flight options from Boston to Sydney. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
This Thrive Travel deal was found by Cheapflights users on 10/23. 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 Thrive Travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2912:56 pm -
2 stops29h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Qantas Airways logo]()
$669
This BYOjet deal was found by Cheapflights users on 10/21. 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 12/47:00 am -
2 stops31h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Alaska Airlines logo]()
$677
This oojo deal was found by Cheapflights users on 10/19. 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.
Wed 11/49:00 am -
1 stop32h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Qantas Airways logo]()
$686
This oojo deal was found by Cheapflights users on 10/20. 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.
Sun 11/89:00 am -
1 stop32h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Qantas Airways logo]()
$695
This Kiwi.com deal was found by Cheapflights users on 10/24. 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.
Mon 11/2311:10 am -
2 stops57h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$697
This American Airlines deal was found by Cheapflights users on 10/20. 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.
Wed 11/44:00 pm -
2 stops25h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![American Airlines logo]()
$699
This American Airlines deal was found by Cheapflights users on 10/19. 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.
Sun 11/11:02 pm -
2 stops25h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![American Airlines logo]()
$700
This Delta deal was found by Cheapflights users on 10/19. 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 11/15:55 pm -
1 stop22h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Delta logo]()
$701
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 October 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,297 (KAYAK) |
One-way from | $669 (Thrive Travel) |
Popular in | December |
Cheapest in | May |
Average price | $1,404 |
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 October 24, 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 11/1
5:55 pm-8:30 am
1 stop22h 35m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$701
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Tue 12/1
4:00 pm-9:00 am
2 stops25h 00m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$735
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Wed 12/9
3:29 pm-9:00 am
2 stops25h 31m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$735
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Mon 11/30
5:59 pm-9:05 am
1 stop23h 06m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$737
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
$738
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Sat 12/5
4:56 pm-7:45 pm
2 stops58h 49m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$741
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Sun 11/29
5:15 pm-10:00 am
3 stops48h 45m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$760
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Thu 10/29
8:25 am-9:20 am
3 stops33h 55m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$761
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Thu 11/12
5:30 am-9:20 am
3 stops35h 50m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$761
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Fri 1/22
8:40 pm-7:20 pm
1 stop30h 40m
Sydney Kingsford Smith
Sun 3/7
9:10 pm-1:55 pm
1 stop32h 45m
$1,321
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 October.
| 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 Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| 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
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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 $1,857). 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 $1,314 and $1,578 in November.The cheapest round-trip price found within the last 5 days was $1,297 on Air New Zealand (Nov 19-Nov 26).
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 October 24, 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.
Overall
8.0
Entertainment
7.4
Food
7.4
Boarding
8.2
Comfort
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Overall
8.0
Entertainment
7.4
Food
7.4
Boarding
8.2
Comfort
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Overall
8.0
Entertainment
7.4
Food
7.4
Boarding
8.2
Comfort
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Overall
8.0
Entertainment
7.4
Food
7.4
Boarding
8.2
Comfort
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Overall
8.0
Entertainment
7.4
Food
7.4
Boarding
8.2
Comfort
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Overall
8.0
Entertainment
7.4
Food
7.4
Boarding
8.2
Comfort
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Related info for your journey
Find useful and relevant information for your journey from Boston to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Sydney?
Book flights to Sydney if you plan to visit one of these locationsParramatta
Wollongong
Coogee
Manly
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Complete your trip
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Search flights from Boston to Sydney by cabin class
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Boston and Sydney flights
Browse other Boston and Sydney flight options. Last updated on October 24, 2026.
Other flights from Boston
Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on October 24, 2026.
Popular flight searches
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Other flights to Sydney
Explore flights to Sydney departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 24, 2026.
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 October 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$318 | Average$1,608 | 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$1,515 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,118 | Average$1,481 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$1,131 | Average$1,364 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,145 | Average$1,461 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,175 | Average$1,505 | FlexibilityNo cancel fee | On-time68% |