Find flights
When to book
Airlines
FAQs

Cheap flights from Boston to Australia from $603

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
20 Dec — 27 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 20 November 2025.

Round-trip from

$1,163

One-way from

$603

Popular in

December

Cheapest in

March

Average price

$2,240
Air Canada
  • Air Canada
  • 15/2-21/2
  • 4 total stops
  • 69h 17m total
  • Boston to Australia
Search Deals
Air Canada
  • Air Canada
  • 3/2
  • 2 total stops
  • 26h 05m total
  • Boston to Australia
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($541 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
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 20 November 2025.

Thu 27/1105:30BOS - BNE
2 stops36h 15mAir Canada
Mon 26/110:45BNE - BOS
2 stops23h 57mAir Canada
Deal found 18/11$1,188
Fri 28/1110:15BOS - BNE
2 stops31h 30mAir Canada
Sat 24/110:45BNE - BOS
2 stops37h 47mAir Canada
Deal found 19/11$1,214
Thu 27/1113:00BOS - BNE
2 stops28h 45mAir Canada
Sat 24/110:45BNE - BOS
2 stops37h 47mAir Canada
Deal found 19/11$1,223
Thu 27/1113:00BOS - BNE
2 stops28h 45mMultiple Airlines
Mon 26/109:40BNE - BOS
1 stop26h 13mMultiple Airlines
Deal found 18/11$1,271
Fri 28/1110:15BOS - BNE
2 stops31h 30mMultiple Airlines
Sat 24/109:40BNE - BOS
1 stop22h 35mMultiple Airlines
Deal found 19/11$1,279
Mon 1/1218:40BOS - BNE
2 stops47h 05mAir Canada
Sat 7/310:45BNE - BOS
2 stops37h 17mAir Canada
Deal found 19/11$1,323
Tue 23/1206:15BOS - BNE
2 stops35h 30mAir Canada
Thu 15/110:45BNE - BOS
2 stops37h 47mAir Canada
Deal found 18/11$1,325
Mon 1/1218:40BOS - BNE
2 stops47h 05mMultiple Airlines
Sat 7/309:40BNE - BOS
1 stop20h 27mMultiple Airlines
Deal found 19/11$1,336
Thu 27/1111:00BOS - BNE
1 stop29h 30mUnited Airlines
Wed 10/1211:40BNE - BOS
1 stop20h 26mUnited Airlines
Deal found 18/11$1,337
Thu 27/1105:30BOS - BNE
2 stops36h 15mMultiple Airlines
Wed 10/1219:40BNE - BOS
3 stops41h 57mMultiple Airlines
Deal found 18/11$1,364
Thu 4/1214:44BOS - MEL
2 stops26h 46mAmerican Airlines
Wed 17/1210:45MEL - BOS
2 stops26h 03mAmerican Airlines
Deal found 18/11$1,580
Thu 4/1218:13BOS - MEL
1 stop23h 17mLufthansa
Wed 17/1211:30MEL - BOS
1 stop21h 24mLufthansa
Deal found 18/11$1,831

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 20 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

Tue 10/2

07:55-07:30

1 stop32h 35m

Brisbane

Fri 20/2

11:40-21:44

1 stop25h 04m

$1,337

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Mon 9/2

17:30-08:20

1 stop23h 50m

Brisbane

Wed 18/2

11:05-21:23

1 stop25h 18m

$1,337

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Mon 9/2

13:50-07:30

1 stop26h 40m

Brisbane

Thu 19/2

11:40-17:02

1 stop20h 22m

$1,337

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Tue 27/1

13:50-07:30

1 stop26h 40m

Brisbane

Fri 30/1

11:40-17:13

1 stop20h 33m

$1,337

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Sat 7/2

10:56-07:30

1 stop29h 34m

Brisbane

Wed 18/2

11:40-19:56

1 stop23h 16m

$1,337

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Wed 25/2

17:50-07:30

1 stop22h 40m

Brisbane

Mon 9/3

10:40-17:04

1 stop20h 24m

$1,337

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Sun 8/2

17:57-07:30

1 stop22h 33m

Brisbane

Fri 20/2

11:40-00:49

1 stop28h 09m

$1,337

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Mon 9/2

17:30-08:20

1 stop23h 50m

Brisbane

Sun 22/2

10:40-06:50

2 stops35h 10m

$1,344

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Fri 13/2

14:20-07:30

2 stops26h 10m

Brisbane

Wed 18/2

11:40-20:11

2 stops23h 31m

$1,344

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Fri 13/2

14:20-07:30

2 stops26h 10m

Brisbane

Fri 20/2

11:40-20:11

2 stops23h 31m

$1,344

Flights are sorted by cheapest return flights first.

Deals found on 16/11

Showing 1-10 of 60 results
1
2
3
...
6

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 $389). Flying from Boston to Australia in January is currently the most expensive (average of $1,559). 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 20 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 20 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
942 reviews
Check prices

Crew

8.2

Boarding

7.7

Comfort

7.5

Overall

7.5

Entertainment

7.2

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
942 reviews
Qantas Airways
7.5
Good
942 reviews
Check prices

Crew

8.2

Boarding

7.7

Comfort

7.5

Overall

7.5

Entertainment

7.2

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
9,029 reviews
Qantas Airways
7.5
Good
942 reviews
Check prices

Crew

8.2

Boarding

7.7

Comfort

7.5

Overall

7.5

Entertainment

7.2

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
11,045 reviews
Qantas Airways
7.5
Good
942 reviews
Check prices

Crew

8.2

Boarding

7.7

Comfort

7.5

Overall

7.5

Entertainment

7.2

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
10,462 reviews
Qantas Airways
7.5
Good
942 reviews
Check prices

Crew

8.2

Boarding

7.7

Comfort

7.5

Overall

7.5

Entertainment

7.2

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 23h 50m. Fly via United Airlines, Delta, 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 United Airlines, with whom users have recently found tickets for as low as $686. However, be on the lookout for offers from Air Canada and Delta, 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 $389). Flying from Boston to Australia in January is currently the most expensive (average of $1,559). 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 20 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,176Average$2,103FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,257Average$2,411FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Qantas AirwaysCheapest$1,514Average$3,560FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
American AirlinesCheapest$1,529Average$2,201FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.