$546+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SYD
Dec 2 — Dec 91
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 2, 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 2, 2026.
This Kissandfly.com deal was found by Cheapflights users on 10/28. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/811:55 am -
2 stops29h 10m
Mon 11/2311:20 am -
1 stop21h 33m
Deal found 10/28![Lufthansa logo]()
$1,319
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Sun 11/811:55 am -
2 stops29h 10m
Mon 11/2311:50 am -
2 stops23h 07m
Deal found 10/28![United Airlines logo]()
$1,330
This Ovago deal was found by Cheapflights users on 10/29. 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.
Sun 11/157:13 am -
2 stops44h 32m
Tue 12/19:40 pm -
2 stops35h 39m
Deal found 10/29![Multiple Airlines logo]()
$1,332
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Sun 11/16:01 pm -
1 stop23h 19m
Mon 11/911:50 am -
2 stops28h 09m
Deal found 10/30![United Airlines logo]()
$1,338
This FlightHub deal was found by Cheapflights users on 10/29. 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.
Thu 12/37:00 am -
1 stop34h 00m
Thu 12/107:05 am -
2 stops29h 08m
Deal found 10/29![Qantas Airways logo]()
$1,343
This CheapOair deal was found by Cheapflights users on 10/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/115:44 pm -
2 stops34h 01m
Sat 11/219:40 pm -
2 stops26h 00m
Deal found 10/28![Multiple Airlines logo]()
$1,354
This Globehunters deal was found by Cheapflights users on 10/30. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:05 am -
1 stop32h 55m
Tue 12/111:10 am -
1 stop28h 49m
Deal found 10/30![Qantas Airways logo]()
$1,367
This Globehunters deal was found by Cheapflights users on 10/30. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/89:00 am -
1 stop32h 00m
Sat 2/611:20 am -
1 stop26h 40m
Deal found 10/30![Qantas Airways logo]()
$1,376
This Cheapflightsfares deal was found by Cheapflights users on 10/29. 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.
Tue 11/176:01 am -
2 stops32h 49m
Tue 12/223:50 pm -
1 stop38h 05m
Deal found 10/29![Qatar Airways logo]()
$1,385
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Sun 11/85:30 am -
2 stops35h 35m
Sat 2/61:20 pm -
2 stops26h 39m
Deal found 10/30![United Airlines logo]()
$1,388
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 2, 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 2, 2026.
This Alaska Airlines deal was found by Cheapflights users on 10/29. 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 2/24:56 pm -
2 stops34h 49m
Thu 2/189:40 pm -
2 stops35h 06m
Deal found 10/29![Multiple Airlines logo]()
$1,304
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/15:45 am -
2 stops35h 20m
Tue 12/81:20 pm -
1 stop21h 55m
Deal found 11/1![United Airlines logo]()
$1,398
This Delta deal was found by Cheapflights users on 10/29. 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 1/237:35 pm -
2 stops43h 15m
Fri 3/510:40 am -
2 stops24h 41m
Deal found 10/29![Delta logo]()
$1,453
This Turkish Airlines deal was found by Cheapflights users on 10/31. 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.
Thu 3/119:00 pm -
2 stops30h 25m
Sat 3/279:35 pm -
2 stops37h 20m
Deal found 10/31![Turkish Airlines logo]()
$1,583
This United Airlines deal was found by Cheapflights users on 11/1. 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 11/171:32 pm -
2 stops27h 48m
Tue 12/2211:50 am -
2 stops28h 09m
Deal found 11/1![United Airlines logo]()
$1,398
This Qantas Airways deal was found by Cheapflights users on 10/31. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/1912:41 pm -
1 stop26h 14m
Sun 5/29:10 am -
1 stop25h 25m
Deal found 10/31![Multiple Airlines logo]()
$1,443
This Delta deal was found by Cheapflights users on 10/30. 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.
Fri 1/226:00 pm -
2 stops68h 50m
Fri 3/510:40 am -
1 stop21h 50m
Deal found 10/30![Delta logo]()
$1,471
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Mon 1/251:24 pm -
2 stops24h 56m
Thu 3/411:20 am -
2 stops23h 39m
Deal found 10/29![United Airlines logo]()
$1,453
This Air New Zealand deal was found by Cheapflights users on 10/28. 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 1/2511:52 am -
3 stops28h 43m
Tue 3/29:55 am -
2 stops27h 40m
Deal found 10/28![Multiple Airlines logo]()
$1,528
This United Airlines deal was found by Cheapflights users on 11/2. 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.
Sun 1/2411:52 am -
2 stops26h 28m
Sat 3/611:20 am -
2 stops24h 18m
Deal found 11/2![United Airlines logo]()
$1,453
This United Airlines deal was found by Cheapflights users on 10/30. 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 1/221:24 pm -
2 stops27h 41m
Fri 3/59:15 am -
2 stops24h 00m
Deal found 10/30![United Airlines logo]()
$1,503
This Air New Zealand deal was found by Cheapflights users on 11/2. 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 3/1011:24 am -
3 stops29h 11m
Fri 3/1911:50 am -
3 stops36h 26m
Deal found 11/2![Multiple Airlines logo]()
$1,718
Last-minute flights from Boston to SydneyDiscover last-minute flight deals from Boston to Sydney. Data last updated November 2, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Sydney. Data last updated November 2, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Sun 11/11:32 pm -
2 stops27h 48m
Mon 11/911:50 am -
2 stops28h 09m
Deal found 10/30![United Airlines logo]()
$1,338
This Kissandfly.com deal was found by Cheapflights users on 10/28. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/811:55 am -
2 stops29h 10m
Mon 11/2311:20 am -
1 stop21h 33m
Deal found 10/28![Lufthansa logo]()
$1,319
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Sun 11/811:55 am -
2 stops29h 10m
Mon 11/2311:50 am -
2 stops23h 07m
Deal found 10/28![United Airlines logo]()
$1,330
This Globehunters deal was found by Cheapflights users on 10/30. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/89:00 am -
1 stop32h 00m
Sat 2/611:20 am -
1 stop26h 40m
Deal found 10/30![Qantas Airways logo]()
$1,376
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Sun 11/85:30 am -
2 stops35h 35m
Sat 2/61:20 pm -
2 stops26h 39m
Deal found 10/30![United Airlines logo]()
$1,388
This CheapOair deal was found by Cheapflights users on 10/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/115:44 pm -
2 stops34h 01m
Sat 11/219:40 pm -
2 stops26h 00m
Deal found 10/28![Multiple Airlines logo]()
$1,354
This Ovago deal was found by Cheapflights users on 10/29. 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.
Sun 11/157:13 am -
2 stops44h 32m
Tue 12/19:40 pm -
2 stops35h 39m
Deal found 10/29![Multiple Airlines logo]()
$1,332
This Cheapflightsfares deal was found by Cheapflights users on 10/29. 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.
Tue 11/176:01 am -
2 stops32h 49m
Tue 12/223:50 pm -
1 stop38h 05m
Deal found 10/29![Qatar Airways logo]()
$1,385
This Globehunters deal was found by Cheapflights users on 10/30. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:05 am -
1 stop32h 55m
Tue 12/111:10 am -
1 stop28h 49m
Deal found 10/30![Qantas Airways logo]()
$1,367
This Cheapflightsfares deal was found by Cheapflights users on 11/2. 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.
Mon 11/308:05 am -
1 stop32h 55m
Mon 12/711:10 am -
1 stop25h 03m
Deal found 11/2![Qantas Airways logo]()
$1,389
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 2, 2026.
Search for one-way flight options from Boston to Sydney. Find affordable one-way fares based on user searches. Data last updated November 2, 2026.
This Philippine Airlines deal was found by Cheapflights users on 10/31. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/98:30 pm -
2 stops45h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Multiple Airlines logo]()
$546
This Gotogate deal was found by Cheapflights users on 10/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/27:00 am -
2 stops31h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Alaska Airlines logo]()
$672
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 3/3011:00 am -
3 stops42h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Multiple Airlines logo]()
$706
This Expedia deal was found by Cheapflights users on 10/29. 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.
Tue 2/22:21 pm -
1 stop26h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Qantas Airways logo]()
$712
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 11/102:25 pm -
1 stop26h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Qantas Airways logo]()
$713
This CheapOair deal was found by Cheapflights users on 10/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2811:00 am -
2 stops40h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Multiple Airlines logo]()
$719
This Gotogate deal was found by Cheapflights users on 11/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/77:08 am -
2 stops33h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Alaska Airlines logo]()
$723
This oojo deal was found by Cheapflights users on 11/1. 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 12/112:40 pm -
1 stop26h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Qantas Airways logo]()
$725
This Gotogate deal was found by Cheapflights users on 11/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:13 am -
2 stops31h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Alaska Airlines logo]()
$726
This oojo deal was found by Cheapflights users on 11/1. 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 2/38:53 am -
1 stop29h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Qantas Airways logo]()
$730
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 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,300 (oojo) |
One-way from | $546 (Philippine Airlines) |
Popular in | December |
Cheapest in | May |
Average price | $1,410 |
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 2, 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
Tue 12/1
2:58 pm-9:05 am
2 stops26h 07m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$734
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Tue 11/10
9:00 am-9:20 am
2 stops32h 20m
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
Wed 1/20
1:48 pm-9:20 am
1 stop27h 32m
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
Mon 12/7
5:45 am-9:20 am
3 stops35h 35m
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
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
$738
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Sun 11/15
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
Tue 11/17
9:30 am-9:20 am
2 stops31h 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
Tue 2/2
4:56 pm-7:45 pm
2 stops34h 49m
Sydney Kingsford Smith
Thu 2/18
9:40 pm-4:46 pm
2 stops35h 06m
$1,304
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Tue 12/1
5:45 am-9:05 am
2 stops35h 20m
Sydney Kingsford Smith
Tue 12/8
1:20 pm-7:15 pm
1 stop21h 55m
$1,398
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Tue 11/17
1:32 pm-9:20 am
2 stops27h 48m
Sydney Kingsford Smith
Tue 12/22
11:50 am-11:59 pm
2 stops28h 09m
$1,398
Showing 1-10 of 19 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
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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 $1,828). 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 $1,334 and $1,588 in February.The cheapest round-trip price found within the last 5 days was $1,300 on Qantas Airways (Feb 6-Feb 27).
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 2, 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
Boarding
8.2
Overall
8.0
Entertainment
7.5
Food
7.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Crew
8.5
Boarding
8.2
Overall
8.0
Entertainment
7.5
Food
7.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Crew
8.5
Boarding
8.2
Overall
8.0
Entertainment
7.5
Food
7.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Crew
8.5
Boarding
8.2
Overall
8.0
Entertainment
7.5
Food
7.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Crew
8.5
Boarding
8.2
Overall
8.0
Entertainment
7.5
Food
7.5
Comfort
7.9
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Crew
8.5
Boarding
8.2
Overall
8.0
Entertainment
7.5
Food
7.5
Comfort
7.9
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
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Boston to Sydney
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Complete your trip
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Search flights from Boston to Sydney by cabin class
Find flights from Boston to Sydney, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Sydney flights
Browse other Boston and Sydney flight options. Last updated on November 2, 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 November 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 November 2, 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 November 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$317 | Average$1,611 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$703 | Average$769 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,087 | Average$1,198 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,102 | Average$1,509 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,118 | Average$1,491 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$1,131 | Average$1,347 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,143 | Average$1,451 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,175 | Average$1,505 | FlexibilityNo cancel fee | On-time68% |