$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 3/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SYD
Nov 15 — Nov 221
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 16, 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 16, 2026.
This United Airlines deal was found by Cheapflights users on 10/13. 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 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 12/221:20 pm -
2 stops26h 39m
Deal found 10/13![United Airlines logo]()
$1,297
This American Airlines deal was found by Cheapflights users on 10/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/243:15 pm -
2 stops25h 45m
Mon 12/72:05 pm -
2 stops23h 46m
Deal found 10/11![American Airlines logo]()
$1,298
This Delta deal was found by Cheapflights users on 10/11. 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.
Sat 10/316:55 pm -
1 stop46h 35m
Fri 11/2010:40 am -
1 stop24h 40m
Deal found 10/11![Delta logo]()
$1,299
This United Airlines deal was found by Cheapflights users on 10/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/142:15 pm -
2 stops26h 40m
Wed 10/2110:30 am -
2 stops23h 52m
Deal found 10/12![United Airlines logo]()
$1,301
This Delta deal was found by Cheapflights users on 10/12. 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 11/249:15 am -
2 stops31h 15m
Mon 12/1410:40 am -
2 stops28h 18m
Deal found 10/12![Delta logo]()
$1,302
This Air Canada deal was found by Cheapflights users on 10/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2710:25 am -
3 stops31h 10m
Fri 12/411:20 am -
3 stops43h 33m
Deal found 10/13![Air Canada logo]()
$1,303
This oojo deal was found by Cheapflights users on 10/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:45 pm -
1 stop45h 20m
Sat 10/3111:10 am -
1 stop24h 47m
Deal found 10/12![Qantas Airways logo]()
$1,304
This Bravofly deal was found by Cheapflights users on 10/12. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:25 pm -
1 stop26h 35m
Sat 11/2111:10 am -
1 stop21h 15m
Deal found 10/12![Qantas Airways logo]()
$1,307
This Delta deal was found by Cheapflights users on 10/12. 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.
Sat 11/145:15 pm -
1 stop23h 15m
Mon 11/3010:40 am -
2 stops59h 39m
Deal found 10/12![Delta logo]()
$1,308
This United Airlines deal was found by Cheapflights users on 10/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:01 pm -
1 stop44h 19m
Tue 12/2211:50 am -
2 stops28h 09m
Deal found 10/12![United Airlines logo]()
$1,309
This oojo deal was found by Cheapflights users on 10/16. 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 10/272:25 pm -
1 stop27h 35m
Tue 11/1011:10 am -
1 stop21h 19m
Deal found 10/16![Qantas Airways logo]()
$1,310
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 16, 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 16, 2026.
This United Airlines deal was found by Cheapflights users on 10/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/201:48 pm -
1 stop27h 32m
Tue 2/21:20 pm -
2 stops24h 33m
Deal found 10/13![United Airlines logo]()
$1,297
This Delta deal was found by Cheapflights users on 10/11. 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.
Thu 10/293:15 pm -
2 stops25h 05m
Thu 11/1910:40 am -
1 stop24h 40m
Deal found 10/11![Delta logo]()
$1,342
This Emirates deal was found by Cheapflights users on 10/15. 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.
Sat 3/2711:05 pm -
1 stop41h 00m
Fri 4/98:10 pm -
1 stop32h 00m
Deal found 10/15![Emirates logo]()
$1,817
This Air New Zealand deal was found by Cheapflights users on 10/12. 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 11/37:31 am -
3 stops33h 04m
Thu 11/1911:50 am -
3 stops28h 56m
Deal found 10/12![Multiple Airlines logo]()
$1,862
This Qantas Airways deal was found by Cheapflights users on 10/13. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/32:20 pm -
1 stop26h 40m
Sun 1/1011:20 am -
1 stop26h 37m
Deal found 10/13![Qantas Airways logo]()
$2,217
This United Airlines deal was found by Cheapflights users on 10/14. 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 11/155:59 pm -
1 stop23h 06m
Mon 11/2311:20 am -
1 stop21h 33m
Deal found 10/14![United Airlines logo]()
$1,337
This United Airlines deal was found by Cheapflights users on 10/14. 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 12/42:50 pm -
2 stops26h 15m
Tue 12/1511:50 am -
1 stop21h 05m
Deal found 10/14![United Airlines logo]()
$1,447
This United Airlines deal was found by Cheapflights users on 10/16. 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.
Thu 11/56:01 pm -
1 stop23h 19m
Wed 12/911:50 am -
1 stop21h 05m
Deal found 10/16![United Airlines logo]()
$1,567
This Air New Zealand deal was found by Cheapflights users on 10/12. 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 1/56:00 am -
3 stops34h 35m
Wed 1/2011:50 am -
3 stops38h 52m
Deal found 10/12![Multiple Airlines logo]()
$2,103
This Air New Zealand deal was found by Cheapflights users on 10/14. 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 1/35:45 am -
3 stops34h 50m
Sun 1/102:05 pm -
3 stops36h 37m
Deal found 10/14![Multiple Airlines logo]()
$2,404
This Air New Zealand deal was found by Cheapflights users on 10/12. 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 2/1312:10 pm -
3 stops28h 25m
Mon 2/227:30 am -
3 stops43h 18m
Deal found 10/12![Multiple Airlines logo]()
$2,710
This Air New Zealand deal was found by Cheapflights users on 10/14. 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 12/141:50 pm -
2 stops26h 45m
Wed 12/1611:50 am -
3 stops38h 27m
Deal found 10/14![Multiple Airlines logo]()
$3,094
Last-minute flights from Boston to SydneyDiscover last-minute flight deals from Boston to Sydney. Data last updated October 16, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Sydney. Data last updated October 16, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 10/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:45 pm -
1 stop45h 20m
Sat 10/3111:10 am -
1 stop24h 47m
Deal found 10/12![Qantas Airways logo]()
$1,304
This oojo deal was found by Cheapflights users on 10/15. 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 10/272:25 pm -
1 stop27h 35m
Tue 11/1011:10 am -
1 stop21h 19m
Deal found 10/15![Qantas Airways logo]()
$1,309
This Delta deal was found by Cheapflights users on 10/11. 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.
Sat 10/316:55 pm -
1 stop46h 35m
Fri 11/2010:40 am -
1 stop24h 40m
Deal found 10/11![Delta logo]()
$1,299
This Alaska Airlines deal was found by Cheapflights users on 10/16. 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.
Thu 11/59:03 am -
2 stops42h 42m
Tue 12/89:40 pm -
2 stops35h 39m
Deal found 10/16![Multiple Airlines logo]()
$1,301
This Bravofly deal was found by Cheapflights users on 10/12. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:25 pm -
1 stop26h 35m
Sat 11/2111:10 am -
1 stop21h 15m
Deal found 10/12![Qantas Airways logo]()
$1,307
This Delta deal was found by Cheapflights users on 10/12. 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.
Sat 11/141:35 pm -
2 stops26h 55m
Mon 11/3010:40 am -
2 stops59h 39m
Deal found 10/12![Delta logo]()
$1,308
This United Airlines deal was found by Cheapflights users on 10/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/175:30 am -
2 stops35h 35m
Wed 12/211:50 am -
2 stops28h 09m
Deal found 10/12![United Airlines logo]()
$1,297
This American Airlines deal was found by Cheapflights users on 10/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/243:15 pm -
2 stops25h 45m
Mon 12/72:05 pm -
2 stops23h 46m
Deal found 10/11![American Airlines logo]()
$1,298
This Delta deal was found by Cheapflights users on 10/12. 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 11/244:15 pm -
1 stop24h 15m
Tue 12/110:40 am -
2 stops35h 39m
Deal found 10/12![Delta logo]()
$1,302
This Air Canada deal was found by Cheapflights users on 10/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2710:25 am -
3 stops31h 10m
Fri 12/411:20 am -
3 stops43h 33m
Deal found 10/13![Air Canada logo]()
$1,303
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 16, 2026.
Search for one-way flight options from Boston to Sydney. Find affordable one-way fares based on user searches. Data last updated October 16, 2026.
This Philippine Airlines deal was found by Cheapflights users on 10/13. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/286:30 am -
2 stops36h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![Multiple Airlines logo]()
$546
This Philippine Airlines deal was found by Cheapflights users on 10/14. 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.
Sun 4/119:25 pm -
2 stops46h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Multiple Airlines logo]()
$547
This oojo deal was found by Cheapflights users on 10/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:25 pm -
1 stop26h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Qantas Airways logo]()
$636
This American Airlines deal was found by Cheapflights users on 10/11. 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 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 10/11![American Airlines logo]()
$649
This American Airlines deal was found by Cheapflights users on 10/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:45 am -
1 stop27h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![American Airlines logo]()
$650
This United Airlines deal was found by Cheapflights users on 10/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/269:45 am -
1 stop32h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![United Airlines logo]()
$651
This Delta deal was found by Cheapflights users on 10/13. 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.
Mon 10/269:05 am -
2 stops31h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![Delta logo]()
$652
This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
Sat 12/59:20 pm -
3 stops45h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Multiple Airlines logo]()
$667
This Expedia deal was found by Cheapflights users on 10/14. 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 11/35:44 pm -
2 stops34h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Multiple Airlines logo]()
$669
This oojo deal was found by Cheapflights users on 10/13. 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.
Sun 3/282:20 pm -
1 stop26h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![Qantas Airways logo]()
$673
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.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 10/12![Qantas Airways logo]()
$676
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 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,297 (United Airlines) |
One-way from | $546 (Philippine Airlines) |
Popular in | December |
Cheapest in | May |
Average price | $1,446 |
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 16, 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
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Mon 10/26
9:45 am-9:20 am
1 stop32h 35m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$651
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Mon 10/26
9:05 am-7:20 am
2 stops31h 15m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$651
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Wed 11/4
11:30 am-8:30 am
1 stop29h 00m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$652
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Wed 1/27
12:26 pm-9:20 am
3 stops28h 54m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$687
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Wed 11/25
5:30 am-9:20 am
3 stops35h 50m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$687
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Thu 10/29
10:45 am-9:00 am
1 stop31h 15m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$693
BostonSydney
BOS Boston Logan Intl - SYD Sydney Kingsford Smith
BOSSYD
Boston Logan Intl
Sat 1/30
7:15 pm-9:20 am
2 stops46h 05m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$693
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
Sun 11/1
5:30 am-9:20 am
3 stops35h 50m
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
Sun 12/6
6:22 pm-7:45 pm
2 stops33h 23m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$705
Showing 1-10 of 23 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 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 $1,968). 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 $1,320 and $1,815 in November.The cheapest round-trip price found within the last 5 days was $1,297 on United Airlines (Nov 17-Dec 2).
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 16, 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.
Boarding
8.2
Food
7.4
Entertainment
7.4
Comfort
7.9
Crew
8.5
Overall
8.0
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Boarding
8.2
Food
7.4
Entertainment
7.4
Comfort
7.9
Crew
8.5
Overall
8.0
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Boarding
8.2
Food
7.4
Entertainment
7.4
Comfort
7.9
Crew
8.5
Overall
8.0
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Boarding
8.2
Food
7.4
Entertainment
7.4
Comfort
7.9
Crew
8.5
Overall
8.0
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Boarding
8.2
Food
7.4
Entertainment
7.4
Comfort
7.9
Crew
8.5
Overall
8.0
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Boarding
8.2
Food
7.4
Entertainment
7.4
Comfort
7.9
Crew
8.5
Overall
8.0
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 16, 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 16, 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 October 16, 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 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$318 | Average$1,636 | 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$1,512 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,118 | Average$1,481 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$1,131 | Average$1,380 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,145 | Average$1,466 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,175 | Average$1,505 | FlexibilityNo cancel fee | On-time68% |