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Cheap flights from Boston to Australia from $771

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 28/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SYD
20 Apr — 27 Apr1
1 adult

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 15 April 2025.

Round-trip from

$1,762

One-way from

$771

Popular in

December

Cheapest in

April

Average price

$2,005
5/6-18/6
  • 5/6-18/6
  • 2 total stops
  • 68h 20m total
  • Boston to Australia
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28/5
  • 28/5
  • 3 total stops
  • 41h 40m total
  • Boston to Australia
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($547 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($111 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Boston to Australia

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 15 April 2025.

Thu 5/608:00BOS - SYD
1 stop40h 40mMultiple Airlines
Wed 18/616:20SYD - BOS
1 stop27h 40mMultiple Airlines
Deal found 14/4$1,762
Sun 21/910:20BOS - SYD
2 stops31h 00mAir Canada
Sat 4/1010:20SYD - BOS
2 stops37h 15mAir Canada
Deal found 14/4$1,959
Tue 21/1018:19BOS - SYD
2 stops27h 26mFiji Airways
Thu 30/1014:15SYD - BOS
2 stops23h 54mFiji Airways
Deal found 13/4$2,134
Fri 22/817:15BOS - SYD
2 stops25h 30mAir New Zealand
Mon 1/909:55SYD - BOS
2 stops44h 43mAir New Zealand
Deal found 14/4$2,149
Tue 26/820:23BOS - SYD
2 stops33h 22mAlaska Airlines
Thu 11/921:40SYD - BOS
1 stop31h 37mAlaska Airlines
Deal found 14/4$2,161
Thu 4/921:35BOS - MEL
2 stops31h 50mTurkish Airlines
Wed 17/921:20MEL - BOS
2 stops36h 20mTurkish Airlines
Deal found 14/4$2,161
Mon 20/1022:00BOS - SYD
1 stop29h 10mQatar Airways
Mon 27/1021:40SYD - BOS
1 stop32h 15mQatar Airways
Deal found 14/4$2,163
Tue 1/710:32BOS - MEL
2 stops34h 18mAir New Zealand
Tue 8/718:55MEL - BOS
2 stops43h 04mAir New Zealand
Deal found 15/4$2,163
Tue 9/922:00BOS - PER
1 stop25h 55mQatar Airways
Tue 30/915:20PER - BOS
1 stop35h 45mQatar Airways
Deal found 14/4$2,176
Sun 4/501:40BOS - SYD
1 stop43h 10mCathay Pacific
Mon 19/507:40SYD - BOS
1 stop29h 20mCathay Pacific
Deal found 14/4$2,191
Sun 20/401:40BOS - PER
1 stop33h 00mCathay Pacific
Wed 14/509:15PER - BOS
1 stop25h 45mCathay Pacific
Deal found 15/4$2,193
Sun 11/521:35BOS - PER
2 stops39h 05mMultiple Airlines
Sun 18/512:25PER - BOS
2 stops43h 15mMultiple Airlines
Deal found 13/4$2,196

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 15 April 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

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Thu 5/6

08:00-14:40

1 stop40h 40m

Sydney Kingsford Smith

Wed 18/6

16:20-06:00

1 stop27h 40m

$1,762

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sun 21/9

10:20-07:20

2 stops31h 00m

Sydney Kingsford Smith

Sat 4/10

10:20-09:35

2 stops37h 15m

$1,959

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Fri 22/8

17:15-08:45

2 stops25h 30m

Sydney Kingsford Smith

Mon 1/9

09:55-16:38

2 stops44h 43m

$2,149

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Tue 26/8

20:23-19:45

2 stops33h 22m

Sydney Kingsford Smith

Thu 11/9

21:40-15:17

1 stop31h 37m

$2,161

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Thu 4/9

21:35-19:25

2 stops31h 50m

Melbourne

Wed 17/9

21:20-19:40

2 stops36h 20m

$2,161

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Tue 1/7

10:32-10:50

2 stops34h 18m

Melbourne

Tue 8/7

18:55-23:59

2 stops43h 04m

$2,163

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Tue 10/6

18:17-11:45

2 stops27h 28m

Sydney Kingsford Smith

Tue 24/6

06:15-23:49

2 stops31h 34m

$2,164

BostonPerth

BOS - PER

BOSPER

Boston Logan Intl

Tue 9/9

22:00-11:55

1 stop25h 55m

Perth

Tue 30/9

15:20-15:05

1 stop35h 45m

$2,176

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sun 21/9

22:00-06:15

1 stop42h 15m

Sydney Kingsford Smith

Sun 28/9

20:45-15:05

1 stop32h 20m

$2,179

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sun 4/5

01:40-10:50

1 stop43h 10m

Sydney Kingsford Smith

Mon 19/5

07:40-23:00

1 stop29h 20m

$2,191

Flights are sorted by cheapest return flights first.

Deals found on 15/4

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, May is the cheapest month in which you can book a flight from Boston to Australia (average of $129). Flying from Boston to Australia in October is currently the most expensive (average of $171). 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 15 April 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boston to Australia as you normally would.

Rainfall in Australia by month

Plan your trip to Australia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Australia ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Australia when rainfall is around 50.0 mm.

Temperature in Australia by month

Plan your trip to Australia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Australia, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

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 15 April 2025.
Get a feel of what it's like to fly with Korean Air, Japan Airlines and Singapore Airlines from Boston to Australia by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,063 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Comfort

8.3

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very Good
1,063 reviews
Korean Air
8.4
Very Good
1,063 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Comfort

8.3

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Japan Airlines
8.3
Very Good
1,440 reviews
Korean Air
8.4
Very Good
1,063 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Comfort

8.3

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very Good
1,288 reviews
Korean Air
8.4
Very Good
1,063 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Comfort

8.3

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Fiji Airways
8.0
Very Good
183 reviews
Korean Air
8.4
Very Good
1,063 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Comfort

8.3

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Emirates
8.0
Very Good
3,196 reviews
Korean Air
8.4
Very Good
1,063 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Comfort

8.3

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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.

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

    The cheapest airline one-way is Fiji Airways, with whom users have recently found tickets for as low as $1,037. However, be on the lookout for offers from Etihad Airways and Qatar 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, May is the cheapest month in which you can book a flight from Boston to Australia (average of $129). Flying from Boston to Australia in October is currently the most expensive (average of $171). 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

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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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,207Average$1,966FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,291Average$2,525FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Qantas AirwaysCheapest$2,169Average$2,522FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights

Fly with Cheapflights

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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?

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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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