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Cheap flights from Boston to Australia from $778

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 21/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Air Canada Logo
10:20 - 08:20BOS-SYD
31h 00m2 stops
Air Canada Logo
10:20 - 09:52SYD-BOS
38h 32m2 stops
$1,290Air Canada
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Sun, 19 Oct - Sun, 26 Oct
Air Canada Logo
10:20 - 08:20BOS-SYD
31h 00m2 stops
Air Canada Logo
10:20 - 09:52SYD-BOS
38h 32m3 stops
$1,301Air Canada
Find Deal
Sun, 19 Oct - Sun, 26 Oct
Logo
13:00 - 11:40BOS-MEL
31h 40m3 stops
Logo
07:25 - 22:37MEL-BOS
31h 12m3 stops
$1,489
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Thu, 30 Oct - Sun, 9 Nov
Logo
13:00 - 13:30BOS-BNE
33h 30m3 stops
Logo
10:45 - 09:32BNE-BOS
37h 47m2 stops
$1,495
Find Deal
Thu, 20 Nov - Wed, 3 Dec
American Airlines Logo
12:40 - 05:25BOS-BNE
26h 45m2 stops
American Airlines Logo
20:05 - 09:46BNE-BOS
27h 41m2 stops
$1,621American Airlines
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Fri, 19 Sep - Sat, 11 Oct
American Airlines Logo
12:00 - 05:00BOS-BNE
26h 00m1 stop
American Airlines Logo
09:40 - 21:35BNE-BOS
26h 55m1 stop
$1,624American Airlines
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Mon, 3 Nov - Sat, 15 Nov
Qantas Airways Logo
15:43 - 06:30BOS-BNE
23h 47m1 stop
Qantas Airways Logo
11:30 - 23:02BNE-BOS
26h 32m1 stop
$1,635Qantas Airways
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Tue, 2 Dec - Tue, 16 Dec
United Airlines Logo
15:15 - 07:30BOS-BNE
25h 15m2 stops
United Airlines Logo
11:40 - 21:43BNE-BOS
25h 03m1 stop
$1,649United Airlines
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Thu, 20 Nov - Wed, 3 Dec
Qantas Airways Logo
08:15 - 09:20BOS-SYD
33h 05m2 stops
Qantas Airways Logo
14:20 - 21:10SYD-BOS
22h 50m1 stop
$1,667Qantas Airways
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Mon, 26 Jan - Sun, 8 Feb
United Airlines Logo
11:00 - 07:30BOS-BNE
29h 30m1 stop
United Airlines Logo
11:40 - 19:24BNE-BOS
22h 44m1 stop
$1,997United Airlines
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Sat, 22 Nov - Sat, 29 Nov

Air Canada flights from Boston to Australia

Our best Air Canada deals on Boston to Australia flight tickets
Air Canada
19 Oct
BOS10:20Boston Logan Intl
31h 00m
2 stops
SYD08:20Sydney Kingsford Smith
26 Oct
SYD10:20Sydney Kingsford Smith
38h 32m
2 stops
BOS09:52Boston Logan Intl
$1,290
Find similar
Air Canada
19 Oct
BOS10:20Boston Logan Intl
31h 00m
2 stops
SYD08:20Sydney Kingsford Smith
26 Oct
SYD10:20Sydney Kingsford Smith
38h 32m
3 stops
BOS09:52Boston Logan Intl
$1,301
Find similar
Air Canada
30 Oct
BOS10:35Boston Logan Intl
31h 00m
2 stops
SYD08:35Sydney Kingsford Smith
9 Nov
SYD11:20Sydney Kingsford Smith
38h 12m
2 stops
BOS09:32Boston Logan Intl
$1,387
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Qantas Airways flights from Boston to Australia

Our best Qantas Airways deals on Boston to Australia flight tickets
Qantas Airways
2 Dec
BOS15:43Boston Logan Intl
23h 47m
1 stop
BNE06:30Brisbane
16 Dec
BNE11:30Brisbane
26h 32m
1 stop
BOS23:02Boston Logan Intl
$1,635
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Qantas Airways
26 Jan
BOS08:15Boston Logan Intl
33h 05m
2 stops
SYD09:20Sydney Kingsford Smith
8 Feb
SYD14:20Sydney Kingsford Smith
22h 50m
1 stop
BOS21:10Boston Logan Intl
$1,667
Find similar
Qantas Airways
14 Nov
BOS16:01Boston Logan Intl
26h 54m
2 stops
SYD10:55Sydney Kingsford Smith
8 Dec
SYD14:20Sydney Kingsford Smith
20h 36m
1 stop
BOS18:56Boston Logan Intl
$1,715
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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 6 August 2025.
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

Sun 19/10

10:20-08:20

2 stops31h 00m

Sydney Kingsford Smith

Sun 26/10

10:20-09:52

2 stops38h 32m

$1,290

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sun 19/10

10:20-08:20

2 stops31h 00m

Sydney Kingsford Smith

Sun 26/10

10:20-09:52

3 stops38h 32m

$1,301

BostonMelbourne

BOS - MEL

BOSMEL

Boston Logan Intl

Thu 30/10

13:00-11:40

3 stops31h 40m

Melbourne

Sun 9/11

07:25-22:37

3 stops31h 12m

$1,489

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Thu 20/11

13:00-13:30

3 stops33h 30m

Brisbane

Wed 3/12

10:45-09:32

2 stops37h 47m

$1,495

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Fri 19/9

12:40-05:25

2 stops26h 45m

Brisbane

Sat 11/10

20:05-09:46

2 stops27h 41m

$1,621

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Mon 3/11

12:00-05:00

1 stop26h 00m

Brisbane

Sat 15/11

09:40-21:35

1 stop26h 55m

$1,624

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Tue 2/12

15:43-06:30

1 stop23h 47m

Brisbane

Tue 16/12

11:30-23:02

1 stop26h 32m

$1,635

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Thu 20/11

15:15-07:30

2 stops25h 15m

Brisbane

Wed 3/12

11:40-21:43

1 stop25h 03m

$1,649

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Mon 26/1

08:15-09:20

2 stops33h 05m

Sydney Kingsford Smith

Sun 8/2

14:20-21:10

1 stop22h 50m

$1,667

BostonBrisbane

BOS - BNE

BOSBNE

Boston Logan Intl

Sat 22/11

11:00-07:30

1 stop29h 30m

Brisbane

Sat 29/11

11:40-19:24

1 stop22h 44m

$1,997

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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, March 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 $1,959. If you don’t want to visit Australia in March, then you should wait until April to fly from Boston, when ticket prices are also cheap, with an average price of $1,997.

What is the cheapest day to depart on your flight to Australia?

On average, the least expensive day to fly to Australia from Boston is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $2,085. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Boston to Australia on a Friday will generally be more expensive and average around $2,493. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Australia?

According to our data, the cheapest time of day to fly to Australia is in the evening. momondo users have found flights departing from Boston to Australia in the evening for as low as $2,084. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Australia are more costly in the morning, with an average ticket price of $3,024. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 $2,214 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 $1,859 on momondo.

Can stopping save me money on Boston to Australia flights?

You could potentially save up to 31% 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

Best price found

$778

Fastest flight time

22h 33m

Direct flights

None

Airports in Australia

8 airports
The best one-way flight to Australia from Boston in the past 72 hours is $778. The best return flight deal from Boston to Australia found on momondo in the last 72 hours is $1,290.
The fastest flight from Boston to Australia takes 22h 33m
There are no direct flights from Boston to Australia. Popular non-direct routes for this connection are Boston Logan Intl Airport - Sydney Kingsford Smith Airport, Boston Logan Intl Airport - Melbourne Avalon Airport and Boston Logan Intl Airport - Melbourne Airport.
There are 8 airports near Australia: Melbourne Avalon (AVV), Melbourne (MEL), Hobart (HBA), Brisbane (BNE), Adelaide (ADL), Cairns (CNS), Perth (PER), Sydney Kingsford Smith (SYD)
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  • 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
Air CanadaPriceFrom $1,179Free cancellationRating
7.1
9,890 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,260Free cancellationRating
7.4
8,916 reviews
Search United Airlines flights
Qantas AirwaysPriceFrom $2,147Free cancellationRating
7.5
887 reviews
Search Qantas Airways 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

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