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Cheap flights from Boston to Australia from $856

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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SYD
13 Aug — 20 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap 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 14 July 2026.

Mon 3/817:33
BOS
-
SYD
1 stop23h 57m
American Airlines
Sun 16/809:10
SYD
-
BOS
2 stops23h 53m
American Airlines
Deal found 12/7$1,692
Wed 19/815:53
BOS
-
SYD
2 stops25h 12m
American Airlines
Wed 26/809:10
SYD
-
BOS
1 stop36h 26m
American Airlines
Deal found 10/7$1,695
Mon 3/809:05
BOS
-
SYD
2 stops31h 45m
Delta
Sun 16/809:15
SYD
-
BOS
1 stop34h 15m
Delta
Deal found 12/7$1,698
Mon 3/809:07
BOS
-
SYD
1 stop31h 48m
United Airlines
Sun 16/810:20
SYD
-
BOS
1 stop20h 47m
United Airlines
Deal found 11/7$1,699
Wed 19/816:59
BOS
-
SYD
1 stop24h 06m
Qantas Airways
Wed 26/812:00
SYD
-
BOS
1 stop24h 06m
Qantas Airways
Deal found 13/7$1,702
Wed 5/810:30
BOS
-
SYD
1 stop31h 00m
American Airlines
Sun 16/809:10
SYD
-
BOS
1 stop28h 34m
American Airlines
Deal found 10/7$1,707
Sat 25/709:01
BOS
-
MEL
1 stop29h 59m
American Airlines
Fri 7/809:45
MEL
-
BOS
2 stops25h 15m
American Airlines
Deal found 10/7$1,707
Wed 5/818:26
BOS
-
SYD
1 stop22h 34m
United Airlines
Wed 12/809:30
SYD
-
BOS
2 stops26h 29m
United Airlines
Deal found 13/7$1,711
Wed 29/716:15
BOS
-
SYD
1 stop24h 40m
United Airlines
Wed 5/810:20
SYD
-
BOS
1 stop22h 39m
United Airlines
Deal found 14/7$1,712
Sun 2/810:30
BOS
-
SYD
2 stops33h 15m
American Airlines
Sun 16/809:10
SYD
-
BOS
2 stops23h 53m
American Airlines
Deal found 13/7$1,714
Wed 21/1011:00
BOS
-
MEL
1 stop28h 45m
American Airlines
Wed 4/1123:15
MEL
-
BOS
1 stop23h 03m
American Airlines
Deal found 10/7$1,714
Sat 15/807:33
BOS
-
MEL
1 stop31h 27m
American Airlines
Sat 29/809:45
MEL
-
BOS
1 stop27h 59m
American Airlines
Deal found 14/7$1,715

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 14 July 2026.

Round-trip from

$1,692

One-way from

$856

Popular in

December

Cheapest in

September

Average price

$2,152
American Airlines
  • American Airlines
  • 3/8-16/8
  • 3 total stops
  • 47h 50m total
  • Boston to Australia
Search Deals
Qantas Airways
  • Qantas Airways
  • 12/8
  • 1 total stop
  • 26h 23m total
  • Boston to Australia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($396 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($103 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 14 July 2026.
Use the filters below to find and compare flights from Boston to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sat 8/8

19:00-06:50

2 stops45h 50m

Sydney Kingsford Smith

Mon 17/8

09:15-19:25

1 stop24h 10m

$1,743

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sat 8/8

17:35-07:00

2 stops47h 25m

Sydney Kingsford Smith

Sun 30/8

10:20-21:29

2 stops25h 09m

$1,743

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Fri 21/8

13:55-07:50

2 stops27h 55m

Melbourne

Wed 2/9

10:00-23:51

1 stop27h 51m

$1,747

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Tue 11/8

09:20-08:15

1 stop32h 55m

Melbourne

Tue 18/8

10:55-19:10

1 stop22h 15m

$1,747
Fastest return journey

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Tue 10/11

17:00-09:50

1 stop24h 50m

Melbourne

Wed 25/11

12:00-21:26

2 stops25h 26m

$1,747

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Tue 1/9

14:00-08:15

1 stop28h 15m

Melbourne

Tue 22/9

06:00-21:02

2 stops29h 02m

$1,761

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Tue 27/10

20:15-07:20

2 stops45h 05m

Brisbane

Fri 6/11

10:40-23:59

2 stops28h 19m

$1,798

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Tue 1/12

20:15-08:20

2 stops45h 05m

Brisbane

Sun 13/12

10:40-06:33

2 stops34h 53m

$1,798

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Thu 1/10

21:20-07:50

2 stops44h 30m

Melbourne

Wed 14/10

11:00-19:28

1 stop23h 28m

$1,819

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Fri 30/10

08:45-06:30

1 stop31h 45m

Brisbane

Tue 3/11

07:55-19:19

2 stops26h 24m

$1,828

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 60 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from Boston to Australia (average of $258). Flying from Boston to Australia in April is currently the most expensive (average of $1,379). 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 far ahead should I book a flight from Boston to Australia?

The best time to book flights from Boston to Australia is 15 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 14 July 2026.
See what other customers who have flown with Qantas Airways,United Airlines, andAir Canada 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
1,061 reviews
Check prices

Entertainment

7.2

Food

7.0

Comfort

7.4

Crew

8.1

Boarding

7.7

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Midhat,Apr 2026

AKL - ADL

Poor as usual. Flight was delayed for more than 4 hours. The Staff was rude. Food was terrible. Very unreliable, unprofessional and unpleasant.
Qantas Airways
7.5
Good
1,061 reviews
Qantas Airways
7.5
Good
1,061 reviews
Check prices

Entertainment

7.2

Food

7.0

Comfort

7.4

Crew

8.1

Boarding

7.7

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Midhat,Apr 2026

AKL - ADL

Poor as usual. Flight was delayed for more than 4 hours. The Staff was rude. Food was terrible. Very unreliable, unprofessional and unpleasant.
United Airlines
7.4
Good
9,991 reviews
Qantas Airways
7.5
Good
1,061 reviews
Check prices

Entertainment

7.2

Food

7.0

Comfort

7.4

Crew

8.1

Boarding

7.7

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Midhat,Apr 2026

AKL - ADL

Poor as usual. Flight was delayed for more than 4 hours. The Staff was rude. Food was terrible. Very unreliable, unprofessional and unpleasant.
Air Canada
7.1
Good
11,336 reviews
Qantas Airways
7.5
Good
1,061 reviews
Check prices

Entertainment

7.2

Food

7.0

Comfort

7.4

Crew

8.1

Boarding

7.7

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Midhat,Apr 2026

AKL - ADL

Poor as usual. Flight was delayed for more than 4 hours. The Staff was rude. Food was terrible. Very unreliable, unprofessional and unpleasant.

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 57m. Fly via American Airlines, United Airlines, or Delta to get the fastest option. The distance from Boston to Australia is about 16240 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 United Airlines, with whom users have recently found tickets for as low as $600. However, be on the lookout for offers from Qantas Airways and American Airlines, 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, February is the cheapest month in which you can book a flight from Boston to Australia (average of $258). Flying from Boston to Australia in April is currently the most expensive (average of $1,379). 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 3 airlines flying from Boston to Australia

Discover the top 3 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 14 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,299Average$1,584FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,411Average$1,843FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
United AirlinesCheapest$1,680Average$2,029FlexibilityNo cancel feeOn-time69%
Search United 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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