Sydney

$488+ Cheap flights from Boston (BOS) to Sydney (SYD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SYD
feb. 18 — feb. 251
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The best prices from Boston Logan Intl to Sydney Kingsford Smith are usually found in March or August, booked 21 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap 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 febrero 13, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$971
(American Airlines)

One-way from

$488
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,390
Provider with most accurate pricing for Boston Logan Intl-Sydney Kingsford Smith flight deals.
Provider most trusted by Cheapflights users for Boston Logan Intl-Sydney Kingsford Smith flights.
From Boston Logan Intl to Sydney Kingsford Smith
One-way flight from Boston Logan Intl to Sydney Kingsford Smith
Highest demand for flights based on searches. 11% potential increase in price ($189 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($40 potential savings vs. average RT price).
Average for round-trip flights in February 2025

Find flight deals from Boston to Sydney

Cheapest flights from Boston to Sydney
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 febrero 13, 2025.

This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/26:15 pmBOS - SYD
1 stop22h 50mAmerican Airlines
mar. 5/139:10 amSYD - BOS
1 stop35h 50mAmerican Airlines
Deal found 2/12$971
This United Airlines deal was found by Cheapflights users on 2/12. 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.
dom. 8/31:22 pmBOS - SYD
2 stops27h 33mUnited Airlines
sáb. 8/99:30 amSYD - BOS
2 stops23h 27mUnited Airlines
Deal found 2/12$1,015
This Kiwi.com deal was found by Cheapflights users on 2/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/247:59 pmBOS - SYD
2 stops49h 31mMultiple Airlines
lun. 3/315:20 pmSYD - BOS
1 stop27h 40mMultiple Airlines
Deal found 2/13$1,134
This Air Canada deal was found by Cheapflights users on 2/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/133:20 pmBOS - SYD
2 stops26h 00mAir Canada
dom. 8/109:20 amSYD - BOS
2 stops38h 15mAir Canada
Deal found 2/11$1,163
This Delta deal was found by Cheapflights users on 2/13. 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.
mié. 3/122:45 pmBOS - SYD
1 stop26h 00mDelta
dom. 3/3010:05 amSYD - BOS
1 stop26h 14mDelta
Deal found 2/13$1,183
This FlightHub deal was found by Cheapflights users on 2/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/14:16 pmBOS - SYD
2 stops28h 14mFiji Airways
mar. 3/42:00 pmSYD - BOS
2 stops23h 34mFiji Airways
Deal found 2/13$1,324
This FlightHub deal was found by Cheapflights users on 2/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/238:00 pmBOS - SYD
2 stops31h 05mTurkish Airlines
mar. 4/110:05 pmSYD - BOS
2 stops36h 35mTurkish Airlines
Deal found 2/13$1,373
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/47:59 pmBOS - SYD
2 stops33h 46mAlaska Airlines
dom. 8/39:40 pmSYD - BOS
2 stops47h 46mAlaska Airlines
Deal found 2/12$1,380
This StudentUniverse deal was found by Cheapflights users on 2/13. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/2412:30 amBOS - SYD
1 stop28h 20mCathay Pacific
lun. 3/311:05 amSYD - BOS
1 stop26h 55mCathay Pacific
Deal found 2/13$1,452
This JetBlue deal was found by Cheapflights users on 2/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/1710:00 pmBOS - SYD
1 stop29h 10mJetBlue
dom. 4/278:45 pmSYD - BOS
1 stop32h 05mJetBlue
Deal found 2/12$1,475
This FlightHub deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/258:30 amBOS - SYD
1 stop32h 30mAir New Zealand
dom. 7/1311:50 amSYD - BOS
2 stops33h 45mAir New Zealand
Deal found 2/12$1,523

Find flights from Boston to Sydney within your budget

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 2,558,603 searches. Data last updated febrero 13, 2025.

Fly from

Boston

Fly to

Sydney

Route

Depart

Return

Price

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

vie. 5/2

6:15 pm-7:05 am

1 stop22h 50m

Sydney Kingsford Smith

mar. 5/13

9:10 am-7:00 am

1 stop35h 50m

$971

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

sáb. 4/12

7:15 am-7:00 am

2 stops33h 45m

Sydney Kingsford Smith

lun. 4/21

9:30 am-5:13 pm

1 stop21h 43m

$1,110

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

lun. 3/24

7:59 pm-12:30 pm

2 stops49h 31m

Sydney Kingsford Smith

lun. 3/31

5:20 pm-6:00 am

1 stop27h 40m

$1,134

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

dom. 3/9

3:40 pm-8:35 am

2 stops25h 55m

Sydney Kingsford Smith

sáb. 6/14

9:20 am-9:35 am

3 stops38h 15m

$1,170

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

mié. 3/12

2:45 pm-7:45 am

1 stop26h 00m

Sydney Kingsford Smith

dom. 3/30

10:05 am-9:19 pm

1 stop26h 14m

$1,183

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

sáb. 3/1

4:16 pm-12:30 pm

2 stops28h 14m

Sydney Kingsford Smith

mar. 3/4

2:00 pm-9:34 pm

2 stops23h 34m

$1,324

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

dom. 2/23

8:00 pm-7:05 pm

2 stops31h 05m

Sydney Kingsford Smith

mar. 4/1

10:05 pm-7:40 pm

2 stops36h 35m

$1,373

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

mié. 3/12

6:24 pm-7:45 pm

2 stops34h 21m

Sydney Kingsford Smith

dom. 3/30

9:40 pm-7:52 am

2 stops25h 12m

$1,408

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

lun. 2/24

12:30 am-8:50 pm

1 stop28h 20m

Sydney Kingsford Smith

lun. 3/3

11:05 am-10:00 pm

1 stop26h 55m

$1,452

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

jue. 4/17

10:00 pm-5:10 pm

1 stop29h 10m

Sydney Kingsford Smith

dom. 4/27

8:45 pm-2:50 pm

1 stop32h 05m

$1,475

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/13

Showing 1-10 of 23 results
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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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars