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$408+ Cheap flights from Boston (BOS) to Australia

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SYD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Boston to Australia

Cheapest flights from Boston to Australia
Explore the most affordable flight options available from Boston to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:00 amBOS - BNE
2 stops34h 30mUnited Airlines
Mon 12/2911:40 amBNE - BOS
2 stops42h 34mUnited Airlines
Deal found 12/11$888
This Delta deal was found by Cheapflights users on 12/11. 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.
Wed 12/179:00 amBOS - BNE
2 stops32h 20mDelta
Fri 12/2610:40 amBNE - BOS
1 stop20h 43mDelta
Deal found 12/11$968
This oojo deal was found by Cheapflights users on 12/11. 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.
Tue 12/305:59 pmBOS - SYD
1 stop23h 01mQantas Airways
Tue 1/137:15 pmSYD - BOS
2 stops38h 41mQantas Airways
Deal found 12/11$975
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/115:58 pmBOS - MEL
1 stop24h 02mUnited Airlines
Thu 12/181:00 pmMEL - BOS
1 stop27h 53mUnited Airlines
Deal found 12/10$1,011
This United Airlines deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/132:15 pmBOS - MEL
2 stops27h 15mUnited Airlines
Sun 12/2811:30 amMEL - BOS
1 stop21h 22mUnited Airlines
Deal found 12/9$1,016
This Delta deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:40 amBOS - MEL
1 stop32h 20mDelta
Sun 1/1810:10 amMEL - BOS
1 stop27h 13mDelta
Deal found 12/10$1,018
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/126:13 pmBOS - MEL
1 stop23h 17mUnited Airlines
Fri 12/191:00 pmMEL - BOS
1 stop27h 53mUnited Airlines
Deal found 12/11$1,076
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/174:40 pmBOS - BNE
2 stops47h 50mUnited Airlines
Fri 12/2611:40 amBNE - BOS
2 stops33h 18mUnited Airlines
Deal found 12/10$1,334
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 amBOS - MEL
1 stop36h 00mUnited Airlines
Sat 1/1711:30 amMEL - BOS
1 stop21h 22mUnited Airlines
Deal found 12/11$1,348
This Cheapflightsfares deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:25 pmBOS - SYD
2 stops28h 40mQantas Airways
Thu 12/187:15 pmSYD - BOS
2 stops42h 18mQantas Airways
Deal found 12/10$1,397
This Cheapflightsfares deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/298:26 amBOS - MEL
1 stop28h 34mQantas Airways
Fri 1/96:45 amMEL - BOS
2 stops27h 11mQantas Airways
Deal found 12/10$1,399
This Air Canada deal was found by Cheapflights users on 12/11. 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.
Thu 12/256:55 pmBOS - SYD
2 stops68h 00mAir Canada
Fri 1/1611:20 amSYD - BOS
2 stops43h 32mAir Canada
Deal found 12/11$1,406

Find flight deals from Boston to Australia

Keep the following information in mind while searching for Boston to Australia flight deals. Data was last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$801
(Air Canada)

One-way from

$408
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$1,918
Provider with most accurate pricing for Boston Logan Intl-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Sydney Kingsford Smith flights.
Search Deals
From Boston Logan Intl to Australia
Search Deals
One-way flight from Boston Logan Intl to Australia
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($233 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Australia 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 December 12, 2025.
Use the filters below to find and compare flights from Boston to Australia that are best for you.

Fly from

Boston

Fly to

Australia

Route

Depart

Return

Price

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Mon 3/16

10:15 am-7:45 am

2 stops31h 30m

Brisbane

Thu 3/19

9:45 am-9:27 pm

2 stops25h 42m

$802

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Sat 1/10

3:40 pm-8:45 am

2 stops26h 05m

Brisbane

Thu 5/14

10:00 am-9:45 am

2 stops37h 45m

$802

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Sat 1/31

10:15 am-8:45 am

2 stops31h 30m

Brisbane

Tue 2/10

9:40 am-3:29 pm

1 stop20h 49m

$841

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Fri 2/6

5:30 am-8:45 am

2 stops36h 15m

Brisbane

Sun 2/15

10:45 am-7:42 pm

2 stops23h 57m

$863

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Sun 1/25

7:00 pm-5:00 am

1 stop43h 00m

Brisbane

Sun 2/1

9:40 am-3:29 pm

1 stop20h 49m

$865

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Fri 2/6

8:00 am-5:00 am

1 stop30h 00m

Brisbane

Sun 2/15

7:40 pm-6:05 am

1 stop25h 25m

$866

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Sun 1/25

12:45 pm-7:30 am

2 stops27h 45m

Brisbane

Sun 2/1

11:40 am-5:13 pm

1 stop20h 33m

$869

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Sun 2/8

5:57 pm-7:30 am

1 stop22h 33m

Brisbane

Thu 2/12

11:40 am-9:47 pm

1 stop25h 07m

$869

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Fri 2/6

2:20 pm-7:30 am

2 stops26h 10m

Brisbane

Sun 2/15

11:40 am-5:02 pm

1 stop20h 22m

$869

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Sat 2/7

12:11 pm-5:00 am

1 stop24h 49m

Melbourne

Thu 2/19

12:00 pm-10:09 pm

1 stop26h 09m

$988

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 60 results
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Best time to book a flight from Boston to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from Boston with our price prediction graph.
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 Australia

What is the cheapest month to book a flight from Boston to Australia?

Currently, September is the cheapest month in which you can book a flight from Boston to Australia (average of $251). Flying from Boston to Australia in January is currently the most expensive (average of $904). 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.

What is the cheapest time of day to fly from BOS to AU?

Find hourly flight availability from Boston to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s typically best to fly out from Boston to Australia in the evening. Doing so could potentially save you 51% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Boston to Australia?

Use this chart to determine the cheapest time to fly round-trip from Boston to Australia. Price data was last updated on December 1, 2024.

Travelers seeking maximum savings on their Boston to Australia flight should consider departing on Saturday at noon when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. 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 Australia. Reviews last updated December 12, 2025.
Read through reviews of airlines operating flights from Boston to Australia, such as Delta, Qantas Airways, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,005 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,005 reviews
Delta
7.9
Good
8,005 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Qantas Airways
7.5
Good
947 reviews
Delta
7.9
Good
8,005 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,095 reviews
Delta
7.9
Good
8,005 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,049 reviews
Delta
7.9
Good
8,005 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,515 reviews
Delta
7.9
Good
8,005 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Boston to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to Australia?

    Located just 2.6 mi from the city center, Boston Logan Intl (BOS) is the airport most travelers will use when flying to Australia from Boston.

  • How long is the flight from Boston to Australia?

    Departing from Boston to Australia will take you 31h 30m. The distance between Boston and Australia is about 9759 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Boston to Australia one-way?

    For one-way options, check prices for Air Canada. According to our data, you can fly for as low as $543. Users have also found prices from $568 and $574 on United Airlines and Fiji Airways, respectively.

  • What are the most popular routes from Boston to Australia?

    The most popular route from Boston to Australia is Boston Logan Intl - Sydney Kingsford Smith. You may also consider Boston Logan Intl - Melbourne or Boston Logan Intl - Melbourne Avalon.

  • Can I find deals for flights from Boston to Australia that include hotel bookings?

    Yes. In addition to deals on Boston to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Australia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Australia.

  • Can I find deals for business class flights from Boston to Australia?

    Yes. Cheapflights offers flight deals from Boston to Australia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Australia?

    Currently, September is the cheapest month in which you can book a flight from Boston to Australia (average of $251). Flying from Boston to Australia in January is currently the most expensive (average of $904). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boston to Australia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Boston to Australia

Discover the top 10 airlines that operate flights from Boston to Australia. 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 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$251Average$385FlexibilityNo cancel feeOn-time62%
DeltaCheapest$318Average$1,169FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$735Average$1,281FlexibilityNo cancel feeOn-time67%
Fiji AirwaysCheapest$740Average$1,418FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$824Average$1,651FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$848Average$1,472FlexibilityNo cancel feeOn-time71%
Air New ZealandCheapest$862Average$1,711FlexibilityNo cancel feeOn-time78%
Qantas AirwaysCheapest$1,022Average$1,698FlexibilityNo cancel feeOn-time74%
Cathay PacificCheapest$1,251Average$1,557FlexibilityNo cancel feeOn-time72%
Qatar AirwaysCheapest$1,295Average$1,685FlexibilityNo cancel feeOn-time68%

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