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Cheap flights from Boston to Australia from $681

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 17/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SYD
13 Dec — 20 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to Australia

Keep the following information in mind while searching for Boston to Australia flight deals. Data was last updated 13 November 2025.

Round-trip from

$1,325

One-way from

$681

Popular in

December

Cheapest in

March

Average price

$2,222
Delta
  • Delta
  • 24/11-7/12
  • 2 total stops
  • 45h 23m total
  • Boston to Australia
Search Deals
Delta
  • Delta
  • 17/11
  • 2 total stops
  • 26h 21m total
  • Boston to Australia
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($529 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($99 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Boston to Australia

Enter your travel dates to find the best prices.

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 13 November 2025.

Wed 12/1116:40BOS - BNE
1 stop24h 40mDelta
Fri 21/1110:40BNE - BOS
1 stop23h 52mDelta
Deal found 11/11$1,325
Sun 23/1120:35BOS - BNE
1 stop44h 45mDelta
Sun 7/1210:40BNE - BOS
1 stop20h 43mDelta
Deal found 11/11$1,340
Tue 25/1120:35BOS - BNE
1 stop44h 45mDelta
Fri 12/1210:40BNE - BOS
2 stops29h 47mDelta
Deal found 11/11$1,346
Thu 27/1107:35BOS - BNE
2 stops57h 45mDelta
Fri 12/1210:40BNE - BOS
2 stops29h 47mDelta
Deal found 11/11$1,354
Mon 24/1116:40BOS - BNE
1 stop24h 40mDelta
Wed 10/1211:05BNE - BOS
2 stops29h 22mDelta
Deal found 11/11$1,524
Sun 23/1120:35BOS - BNE
1 stop44h 45mDelta
Wed 10/1211:05BNE - BOS
2 stops29h 22mDelta
Deal found 11/11$1,538
Thu 27/1117:05BOS - BNE
2 stops48h 15mDelta
Wed 10/1211:05BNE - BOS
2 stops27h 50mDelta
Deal found 11/11$1,539
Wed 26/1116:35BOS - BNE
2 stops25h 10mAir Canada
Tue 9/1210:45BNE - BOS
2 stops47h 57mAir Canada
Deal found 11/11$1,553
Wed 26/1114:30BOS - BNE
1 stop25h 00mQantas Airways
Tue 9/1212:10BNE - BOS
1 stop25h 09mQantas Airways
Deal found 11/11$1,564
Sat 6/1208:14BOS - MEL
1 stop33h 16mQantas Airways
Thu 11/1206:45MEL - BOS
2 stops40h 29mQantas Airways
Deal found 12/11$1,721
Sat 6/1208:14BOS - MEL
1 stop33h 16mAmerican Airlines
Sun 21/1216:05MEL - BOS
1 stop22h 56mAmerican Airlines
Deal found 11/11$1,766
Wed 10/1212:00BOS - MEL
1 stop29h 30mQantas Airways
Wed 17/1206:45MEL - BOS
2 stops26h 46mQantas Airways
Deal found 12/11$1,786

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 13 November 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

Fri 27/2

17:35-08:20

1 stop23h 45m

Brisbane

Wed 11/3

10:05-21:35

1 stop25h 30m

$1,325

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Fri 6/3

12:45-08:20

1 stop28h 35m

Brisbane

Sun 22/3

09:40-21:35

1 stop25h 55m

$1,325

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Wed 25/2

17:35-08:20

1 stop23h 45m

Brisbane

Fri 13/3

09:40-21:35

1 stop25h 55m

$1,327

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Wed 26/11

17:25-08:20

1 stop23h 55m

Brisbane

Fri 12/12

10:40-23:58

2 stops28h 18m

$1,333

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Mon 2/3

12:50-08:20

2 stops28h 30m

Brisbane

Fri 13/3

09:40-23:59

2 stops28h 19m

$1,333

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Sun 1/3

18:57-08:20

2 stops46h 23m

Brisbane

Wed 11/3

10:05-16:30

1 stop20h 25m

$1,333

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Mon 2/3

09:00-08:20

2 stops32h 20m

Brisbane

Sun 8/3

10:40-20:35

1 stop24h 55m

$1,333

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Fri 27/2

16:58-08:20

2 stops24h 22m

Brisbane

Fri 13/3

09:40-23:59

2 stops28h 19m

$1,333

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Fri 13/3

12:55-07:20

2 stops28h 25m

Brisbane

Fri 20/3

09:40-23:59

2 stops28h 19m

$1,333

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Sun 7/12

08:00-10:00

1 stop34h 00m

Melbourne

Fri 16/1

11:30-16:52

1 stop21h 22m

$1,812

Flights are sorted by cheapest return flights first.

Deals found on 11/11

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 return 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 $386). Flying from Boston to Australia in January is currently the most expensive (average of $1,547). 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 13 November 2025.

Unlike at midday, when flights are generally more expensive, you can save up to 22% on flights from Boston to Australia by exploring options for tickets in the evening.

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

Use this chart to determine the cheapest time to fly return from Boston to Australia. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Boston to Australia flight should consider departing on Sunday at midday when fares are most often at their lowest. Thursday at midday 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 13 November 2025.
See what other customers who have flown with Qantas Airways, United Airlines, andAmerican Airlines from Boston to Australia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qantas Airways
7.5
Good
933 reviews
Check prices

Entertainment

7.2

Food

7.0

Overall

7.5

Comfort

7.5

Crew

8.2

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.
Qantas Airways
7.5
Good
933 reviews
Qantas Airways
7.5
Good
933 reviews
Check prices

Entertainment

7.2

Food

7.0

Overall

7.5

Comfort

7.5

Crew

8.2

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.
United Airlines
7.4
Good
9,015 reviews
Qantas Airways
7.5
Good
933 reviews
Check prices

Entertainment

7.2

Food

7.0

Overall

7.5

Comfort

7.5

Crew

8.2

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.
American Airlines
7.2
Good
11,048 reviews
Qantas Airways
7.5
Good
933 reviews
Check prices

Entertainment

7.2

Food

7.0

Overall

7.5

Comfort

7.5

Crew

8.2

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.
Air Canada
7.1
Good
10,443 reviews
Qantas Airways
7.5
Good
933 reviews
Check prices

Entertainment

7.2

Food

7.0

Overall

7.5

Comfort

7.5

Crew

8.2

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Carol,Oct 2025

ADL - MEL

Smooth flight, good onboard staff who were very caring when I didn’t feel very well.

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 4.2 km from the city centre, Boston Logan Intl (BOS) is the airport most travellers will use when flying to Australia from Boston.

  • How long is the flight from Boston to Australia?

    There are many flights that can get you from Boston to Australia in 23h 45m. Fly via Delta, United Airlines, or Qantas Airways to get the fastest option. The distance from Boston to Australia is about 15706 km. Both multi-stop and direct flights can be found to your destination and back.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $681. However, be on the lookout for offers from Air Canada and Qantas Airways, as they are both options that can get you from Boston to Australia for a low price.

  • 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 holiday 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 $386). Flying from Boston to Australia in January is currently the most expensive (average of $1,547). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Boston to Australia

Discover the top 4 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 647,157 searches. Data last updated 13 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,167Average$2,086FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,247Average$2,391FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Qantas AirwaysCheapest$1,502Average$3,531FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
American AirlinesCheapest$1,516Average$2,184FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Boston to Australia?

When you search for this flight from Boston to Australia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Boston to Australia?

Cheapflights simply makes it quick and affordable to book flights from Boston to Australia by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Boston to Australia with no change fees?

Yes! Cheapflights helps users easily find flights from Boston to Australia with no change fees.

Can Cheapflights notify me if prices for flights from Boston to Australia become cheaper?

Yes! Start tracking prices for Boston to Australia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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