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Cheap flights from Boston to Australia from $709

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Australia departing on 30/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Cheap return flights

Enter your travel dates to find the best prices.
Qantas Airways Logo
16:50 - 09:00
BOS
-
SYD
24h 10m
1 stop
Qantas Airways Logo
17:50 - 15:13
SYD
-
BOS
37h 23m
2 stops
$1,292Qantas Airways
Tue, 17 Feb - Thu, 26 Feb
Qantas Airways Logo
16:50 - 09:00
BOS
-
SYD
24h 10m
1 stop
Qantas Airways Logo
17:50 - 15:13
SYD
-
BOS
37h 23m
2 stops
$1,294Qantas Airways
Thu, 19 Feb - Mon, 23 Feb
Air Canada Logo
05:50 - 07:05
BOS
-
BNE
35h 15m
2 stops
Air Canada Logo
10:00 - 09:45
BNE
-
BOS
37h 45m
2 stops
$1,341Air Canada
Sun, 24 May - Sun, 7 Jun
Air Canada Logo
05:50 - 07:05
BOS
-
BNE
35h 15m
2 stops
Air Canada Logo
10:00 - 09:45
BNE
-
BOS
37h 45m
2 stops
$1,342Air Canada
Sun, 24 May - Sun, 7 Jun
Multiple Airlines Logo
10:15 - 07:45
BOS
-
BNE
31h 30m
2 stops
Multiple Airlines Logo
08:40 - 17:14
BNE
-
BOS
22h 34m
1 stop
$1,369Multiple Airlines
Mon, 9 Mar - Thu, 19 Mar
Multiple Airlines Logo
13:00 - 11:30
BOS
-
BNE
32h 30m
3 stops
Multiple Airlines Logo
08:40 - 15:13
BNE
-
BOS
20h 33m
1 stop
$1,410Multiple Airlines
Mon, 9 Mar - Thu, 19 Mar
American Airlines Logo
06:45 - 05:00
BOS
-
MEL
30h 15m
1 stop
American Airlines Logo
12:00 - 18:31
MEL
-
BOS
22h 31m
1 stop
$1,445American Airlines
Mon, 23 Feb - Sun, 8 Mar
American Airlines Logo
11:00 - 05:00
BOS
-
MEL
26h 00m
2 stops
American Airlines Logo
12:00 - 18:31
MEL
-
BOS
22h 31m
1 stop
$1,451American Airlines
Mon, 23 Feb - Sun, 8 Mar
United Airlines Logo
14:15 - 08:30
BOS
-
ADL
27h 45m
2 stops
United Airlines Logo
14:15 - 00:49
ADL
-
BOS
25h 04m
1 stop
$1,889United Airlines
Sat, 21 Mar - Sat, 28 Mar
United Airlines Logo
11:00 - 08:30
BOS
-
ADL
31h 00m
2 stops
United Airlines Logo
14:15 - 00:35
ADL
-
BOS
24h 50m
2 stops
$1,895United Airlines
Sat, 21 Mar - Sat, 28 Mar

Air New Zealand flights from Boston to Australia

Our best Air New Zealand deals on Boston to Australia flight tickets
Air New Zealand
14 May
BOS10:35Boston Logan Intl
30h 45m
2 stops
SYD07:20Sydney Kingsford Smith
29 May
SYD09:20Sydney Kingsford Smith
46h 25m
2 stops
BOS17:45Boston Logan Intl
$1,531
Air New Zealand
31 July
BOS10:40Boston Logan Intl
30h 40m
2 stops
SYD07:20Sydney Kingsford Smith
27 Aug
SYD09:20Sydney Kingsford Smith
27h 18m
1 stop
BOS22:38Boston Logan Intl
$1,543
Air New Zealand
14 May
BOS10:35Boston Logan Intl
30h 45m
2 stops
SYD07:20Sydney Kingsford Smith
29 May
SYD09:20Sydney Kingsford Smith
27h 19m
1 stop
BOS22:39Boston Logan Intl
$1,544

Qantas Airways flights from Boston to Australia

Our best Qantas Airways deals on Boston to Australia flight tickets
Qantas Airways
17 Feb
BOS16:50Boston Logan Intl
24h 10m
1 stop
SYD09:00Sydney Kingsford Smith
26 Feb
SYD17:50Sydney Kingsford Smith
37h 23m
2 stops
BOS15:13Boston Logan Intl
$1,292
Qantas Airways
19 Feb
BOS16:50Boston Logan Intl
24h 10m
1 stop
SYD09:00Sydney Kingsford Smith
23 Feb
SYD17:50Sydney Kingsford Smith
37h 23m
2 stops
BOS15:13Boston Logan Intl
$1,294
Qantas Airways
8 Feb
BOS17:20Boston Logan Intl
32h 20m
2 stops
SYD17:40Sydney Kingsford Smith
24 Feb
SYD11:20Sydney Kingsford Smith
34h 54m
1 stop
BOS06:14Boston Logan Intl
$1,315

momondo 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, momondo users made 78,305 searches. Data last updated 7 February 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

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Tue 17/2

16:50-09:00

1 stop24h 10m

Sydney Kingsford Smith

Thu 26/2

17:50-15:13

2 stops37h 23m

$1,292

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Thu 19/2

16:50-09:00

1 stop24h 10m

Sydney Kingsford Smith

Mon 23/2

17:50-15:13

2 stops37h 23m

$1,294

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Sun 24/5

05:50-07:05

2 stops35h 15m

Brisbane

Sun 7/6

10:00-09:45

2 stops37h 45m

$1,341

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Sun 24/5

05:50-07:05

2 stops35h 15m

Brisbane

Sun 7/6

10:00-09:45

2 stops37h 45m

$1,342

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Mon 9/3

10:15-07:45

2 stops31h 30m

Brisbane

Thu 19/3

08:40-17:14

1 stop22h 34m

$1,369

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Mon 9/3

13:00-11:30

3 stops32h 30m

Brisbane

Thu 19/3

08:40-15:13

1 stop20h 33m

$1,410

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Mon 23/2

06:45-05:00

1 stop30h 15m

Melbourne

Sun 8/3

12:00-18:31

1 stop22h 31m

$1,445

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Mon 23/2

11:00-05:00

2 stops26h 00m

Melbourne

Sun 8/3

12:00-18:31

1 stop22h 31m

$1,451

BostonAdelaide

BOS - ADL

BOSADL

Boston Logan Intl

Sat 21/3

14:15-08:30

2 stops27h 45m

Adelaide

Sat 28/3

14:15-00:49

1 stop25h 04m

$1,889

BostonAdelaide

BOS - ADL

BOSADL

Boston Logan Intl

Sat 21/3

11:00-08:30

2 stops31h 00m

Adelaide

Sat 28/3

14:15-00:35

2 stops24h 50m

$1,895

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Australia from

How to get the cheapest flight ticket from Boston to Australia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Australia?

In general, September is the cheapest month to fly from Boston to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,740. If you don’t want to visit Australia in September, then you should wait until February to fly from Boston, when ticket prices are also cheap, with an average price of $1,773.

How far in advance should I book a flight to Australia?

You are more likely to see cheaper flights to Australia from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $2,034 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Boston for as low as $1,792 on momondo.

Can stopping save me money on Boston to Australia flights?

You could potentially save up to 17% on your flight if you consider stops on a Boston to Australia flight.

Cheap Boston to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Australia

Fastest flight time

22h 35m

Direct flights

None
The fastest flight from Boston to Australia takes 22h 35m
There are no direct flights from Boston to Australia. There are no popular flight routes from Boston to Australia.
Search flight deals

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Australia?

    Prices for flights from Boston Logan Intl Airport to Australia were last updated today.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Australia?

  • How old do you have to be to fly from Boston Logan Intl Airport to Australia?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Boston Logan Intl Airport to Australia.

  • What documentation or ID do you need to fly to Australia?

    The required travel and health documents for your Australia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Australia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Boston to Australia

Compare and see reviews for airlines that fly from Boston to Australia with momondo
Airline
Rating
Free cancellation
Price
United AirlinesPriceFrom $1,165Free cancellationRating
7.4
9,254 reviews
Search United Airlines flights
Air CanadaPriceFrom $1,336Free cancellationRating
7.1
10,697 reviews
Search Air Canada flights
Qantas AirwaysPriceFrom $1,401Free cancellationRating
7.5
988 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $1,420Free cancellationRating
7.2
11,249 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Australia?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Australia from Boston.

Can I find flights from Boston to Australia with flexible booking policies on momondo?

Flights from Boston to Australia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Boston to Australia?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Australia from Boston.

I’m not ready to book a flight from Boston to Australia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Boston to Australia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Australia trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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