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Cheap flights from Boston to Australia from $721

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 30/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SYD
1 Aug — 8 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 2 July 2026.

Wed 21/1019:45
BOS
-
MEL
1 stop44h 00m
Qantas Airways
Wed 4/1122:45
MEL
-
BOS
1 stop23h 33m
Qantas Airways
Deal found 30/6$1,595
Sun 18/1007:00
BOS
-
MEL
1 stop32h 45m
Qantas Airways
Sun 22/1122:45
MEL
-
BOS
1 stop23h 33m
Qantas Airways
Deal found 30/6$1,601
Thu 13/810:04
BOS
-
BNE
3 stops34h 36m
Multiple Airlines
Thu 20/811:55
BNE
-
BOS
3 stops37h 52m
Multiple Airlines
Deal found 29/6$1,628
Thu 10/910:30
BOS
-
MEL
1 stop30h 15m
Qantas Airways
Sun 11/1009:45
MEL
-
BOS
1 stop28h 54m
Qantas Airways
Deal found 28/6$1,634
Sat 15/816:59
BOS
-
SYD
1 stop24h 06m
Qantas Airways
Sun 30/812:00
SYD
-
BOS
1 stop21h 43m
Qantas Airways
Deal found 30/6$1,701
Wed 12/816:27
BOS
-
SYD
1 stop24h 28m
American Airlines
Mon 24/809:10
SYD
-
BOS
2 stops24h 32m
American Airlines
Deal found 30/6$1,702
Wed 29/717:53
BOS
-
SYD
1 stop23h 02m
American Airlines
Wed 5/809:10
SYD
-
BOS
1 stop28h 34m
American Airlines
Deal found 29/6$1,704
Sun 2/817:33
BOS
-
SYD
1 stop23h 57m
American Airlines
Sun 16/809:10
SYD
-
BOS
1 stop28h 34m
American Airlines
Deal found 30/6$1,705
Wed 29/718:26
BOS
-
SYD
1 stop22h 34m
United Airlines
Wed 16/909:30
SYD
-
BOS
2 stops26h 29m
United Airlines
Deal found 29/6$1,710
Mon 29/618:27
BOS
-
SYD
1 stop22h 33m
United Airlines
Mon 13/709:30
SYD
-
BOS
1 stop21h 51m
United Airlines
Deal found 28/6$1,711
Tue 28/710:30
BOS
-
SYD
1 stop31h 00m
American Airlines
Tue 4/809:10
SYD
-
BOS
1 stop23h 30m
American Airlines
Deal found 30/6$1,714
Thu 10/910:30
BOS
-
MEL
1 stop30h 15m
Qantas Airways
Tue 13/1009:45
MEL
-
BOS
1 stop25h 31m
Qantas Airways
Deal found 28/6$1,714

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 2 July 2026.

Round-trip from

$1,595

One-way from

$721

Popular in

December

Cheapest in

September

Average price

$2,242
Qantas Airways
  • Qantas Airways
  • 21/10-4/11
  • 2 total stops
  • 67h 33m total
  • Boston to Australia
Search Deals
30/8
  • 30/8
  • 3 total stops
  • 36h 21m total
  • Boston to Australia
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($433 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($119 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 2 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

Wed 29/7

07:10-06:50

2 stops33h 40m

Sydney Kingsford Smith

Wed 5/8

09:15-23:41

2 stops28h 26m

$1,710

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Wed 12/8

14:00-06:55

1 stop26h 55m

Sydney Kingsford Smith

Mon 24/8

10:20-17:07

1 stop20h 47m

$1,710

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Tue 11/8

14:00-06:55

1 stop26h 55m

Sydney Kingsford Smith

Tue 18/8

10:20-19:10

1 stop22h 50m

$1,720

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sun 9/8

08:55-06:50

2 stops31h 55m

Sydney Kingsford Smith

Sun 23/8

09:15-23:58

2 stops28h 43m

$1,726

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Mon 24/8

16:15-08:15

1 stop26h 00m

Melbourne

Tue 1/9

10:55-22:59

1 stop26h 04m

$1,737

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Tue 17/11

08:05-10:30

1 stop34h 25m

Melbourne

Wed 25/11

12:45-23:40

2 stops26h 55m

$1,737

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Wed 21/10

05:45-08:30

2 stops35h 45m

Melbourne

Wed 4/11

12:45-23:40

2 stops26h 55m

$1,739

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Tue 4/8

16:10-08:15

1 stop26h 05m

Melbourne

Mon 17/8

10:55-22:59

1 stop26h 04m

$1,739

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Fri 21/8

15:45-07:30

2 stops25h 45m

Melbourne

Sun 30/8

09:30-19:19

2 stops23h 49m

$1,745

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Sat 22/8

15:10-08:15

2 stops27h 05m

Melbourne

Wed 2/9

09:30-21:02

2 stops25h 32m

$1,745

Flights are sorted by cheapest return flights first.

Deals found on 29/6

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 $260). Flying from Boston to Australia in April is currently the most expensive (average of $1,386). 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 2 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
1,055 reviews
Check prices

Food

7.0

Entertainment

7.2

Comfort

7.4

Crew

8.1

Overall

7.5

Boarding

7.7

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
1,055 reviews
Qantas Airways
7.5
Good
1,055 reviews
Check prices

Food

7.0

Entertainment

7.2

Comfort

7.4

Crew

8.1

Overall

7.5

Boarding

7.7

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
9,926 reviews
Qantas Airways
7.5
Good
1,055 reviews
Check prices

Food

7.0

Entertainment

7.2

Comfort

7.4

Crew

8.1

Overall

7.5

Boarding

7.7

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
11,287 reviews
Qantas Airways
7.5
Good
1,055 reviews
Check prices

Food

7.0

Entertainment

7.2

Comfort

7.4

Crew

8.1

Overall

7.5

Boarding

7.7

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 24h 40m. Fly via Delta, United Airlines, or Qatar Airways 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 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 $260). Flying from Boston to Australia in April is currently the most expensive (average of $1,386). 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 2 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,306Average$1,593FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,418Average$2,173FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
United AirlinesCheapest$1,689Average$2,081FlexibilityNo 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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