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Cheap flights from Boston to Australia from $620

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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SYD
27 Dec — 3 Jan1
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 27 November 2025.

Round-trip from

$1,204

One-way from

$620

Popular in

December

Cheapest in

March

Average price

$2,232
Air Canada
  • Air Canada
  • 18/2-25/2
  • 4 total stops
  • 55h 27m total
  • Boston to Australia
Search Deals
Air Canada
  • Air Canada
  • 3/2
  • 2 total stops
  • 31h 30m total
  • Boston to Australia
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($532 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($100 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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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 27 November 2025.

Wed 3/1208:14BOS - MEL
1 stop33h 16mAmerican Airlines
Sun 14/1216:05MEL - BOS
1 stop22h 53mAmerican Airlines
Deal found 25/11$1,514
Thu 4/1217:58BOS - MEL
1 stop24h 02mUnited Airlines
Wed 17/1213:00MEL - BOS
2 stops25h 45mUnited Airlines
Deal found 25/11$1,537
Sat 6/1218:13BOS - MEL
1 stop23h 17mUnited Airlines
Thu 25/1213:00MEL - BOS
1 stop22h 56mUnited Airlines
Deal found 24/11$1,551
Sat 6/1211:53BOS - MEL
2 stops29h 37mUnited Airlines
Wed 24/1211:30MEL - BOS
1 stop21h 22mUnited Airlines
Deal found 24/11$1,557
Tue 9/1211:04BOS - MEL
2 stops25h 56mAmerican Airlines
Mon 22/1207:00MEL - BOS
2 stops26h 09mAmerican Airlines
Deal found 24/11$1,565
Wed 10/1213:45BOS - MEL
1 stop26h 15mDelta
Wed 24/1210:10MEL - BOS
2 stops38h 59mDelta
Deal found 24/11$1,568
Wed 10/1207:45BOS - MEL
1 stop32h 15mDelta
Sun 21/1210:10MEL - BOS
2 stops36h 32mDelta
Deal found 24/11$1,591
Sat 6/1218:25BOS - MEL
2 stops69h 35mDelta
Wed 24/1210:10MEL - BOS
2 stops38h 59mDelta
Deal found 24/11$1,593
Fri 12/1216:01BOS - SYD
2 stops38h 24mQantas Airways
Thu 15/114:05SYD - BOS
1 stop23h 50mQantas Airways
Deal found 25/11$1,945
Sat 13/1206:00BOS - BNE
2 stops34h 30mUnited Airlines
Mon 29/1211:40BNE - BOS
2 stops26h 55mUnited Airlines
Deal found 25/11$1,946
Mon 15/1218:23BOS - BNE
2 stops46h 07mUnited Airlines
Thu 22/111:40BNE - BOS
2 stops27h 06mUnited Airlines
Deal found 26/11$1,980
Mon 15/1205:30BOS - BNE
2 stops59h 00mUnited Airlines
Fri 16/111:40BNE - BOS
3 stops40h 06mUnited Airlines
Deal found 26/11$1,982

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 27 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

Wed 18/2

10:15-08:45

2 stops31h 30m

Brisbane

Wed 25/2

06:35-22:37

3 stops31h 02m

$1,250

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Sat 31/1

13:50-07:30

1 stop26h 40m

Brisbane

Wed 4/2

11:40-17:13

1 stop20h 33m

$1,331

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Thu 12/3

20:45-07:20

2 stops44h 35m

Brisbane

Sun 22/3

09:40-16:14

1 stop20h 34m

$1,338

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Wed 18/2

17:50-07:30

1 stop22h 40m

Brisbane

Wed 25/2

11:40-10:36

2 stops37h 56m

$1,339

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Sun 1/3

07:15-07:30

2 stops33h 15m

Brisbane

Tue 10/3

10:40-21:41

2 stops25h 01m

$1,339

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Wed 18/2

13:00-13:30

3 stops33h 30m

Brisbane

Wed 25/2

06:35-10:02

3 stops42h 27m

$1,428

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Sun 1/3

13:55-09:30

2 stops27h 35m

Melbourne

Mon 9/3

12:00-19:41

1 stop22h 41m

$1,536

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Thu 26/2

18:07-09:30

1 stop23h 23m

Melbourne

Sat 7/3

13:00-19:41

1 stop22h 41m

$1,536

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Tue 24/2

14:20-10:00

2 stops27h 40m

Melbourne

Thu 5/3

13:00-19:41

1 stop22h 41m

$1,536

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Mon 2/3

13:50-10:00

1 stop28h 10m

Melbourne

Mon 9/3

12:00-19:41

1 stop22h 41m

$1,536

Flights are sorted by cheapest return flights first.

Deals found on 25/11

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 $387). Flying from Boston to Australia in January is currently the most expensive (average of $1,554). 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 27 November 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 15% on flights from Boston to Australia by exploring options for tickets at midday.

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 27 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
946 reviews
Check prices

Entertainment

7.2

Crew

8.1

Overall

7.5

Boarding

7.7

Comfort

7.5

Food

7.0

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
946 reviews
Qantas Airways
7.5
Good
946 reviews
Check prices

Entertainment

7.2

Crew

8.1

Overall

7.5

Boarding

7.7

Comfort

7.5

Food

7.0

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
9,050 reviews
Qantas Airways
7.5
Good
946 reviews
Check prices

Entertainment

7.2

Crew

8.1

Overall

7.5

Boarding

7.7

Comfort

7.5

Food

7.0

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
11,037 reviews
Qantas Airways
7.5
Good
946 reviews
Check prices

Entertainment

7.2

Crew

8.1

Overall

7.5

Boarding

7.7

Comfort

7.5

Food

7.0

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
10,481 reviews
Qantas Airways
7.5
Good
946 reviews
Check prices

Entertainment

7.2

Crew

8.1

Overall

7.5

Boarding

7.7

Comfort

7.5

Food

7.0

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 26h 40m. Fly via Air Canada, United Airlines, or Delta 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 Air Canada, with whom users have recently found tickets for as low as $620. However, be on the lookout for offers from United Airlines 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, September is the cheapest month in which you can book a flight from Boston to Australia (average of $387). Flying from Boston to Australia in January is currently the most expensive (average of $1,554). 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 27 November 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,253Average$2,297FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,434Average$1,731FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,509Average$3,549FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
American AirlinesCheapest$1,524Average$2,194FlexibilityNo 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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