Which airport is the most popular layover for flights between Boston and Sydney?

Los Angeles (LAX) was the most common stop: 35% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Boston to Sydney?

Flights connecting via Nadi (NAN) have the shortest average one-way travel time: 18h 45m.

What is the cheapest airline that flies from Boston Logan Intl to Sydney Kingsford Smith?

Air Canada, American Airlines, and United Airlines are the most popular carriers operating from Boston Logan Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

United Airlines, Qantas Airways and Delta are the top three most popular airlines that fly to Sydney from Boston according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 10 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Which layover airport offers the lowest fares from Boston to Sydney?

Flights via Nadi (NAN) offer the lowest average round-trip price of $890.

Which layover airport has the shortest connection time from Boston to Sydney?

San Francisco (SFO) has the shortest average layover time for this route: 1h 24m.

When did momondo last update prices for flights from Boston Logan Intl Airport to Sydney Kingsford Smith Airport?

Prices for flights from Boston Logan Intl Airport to Sydney Kingsford Smith Airport were last updated today.

How many operators does momondo search for flights from Boston Logan Intl Airport to Sydney Kingsford Smith Airport?

As of February 2026, there are 10 operators available to choose from for flights from Boston Logan Intl Airport to Sydney Kingsford Smith Airport.

How old do you have to be to fly from Boston Logan Intl Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$441 Cheap Flights from Boston to Sydney in 2026

Q: What is the typical price of a round-trip flight between Boston and Sydney?

Prices are currently typical for flights on this route. Typical prices usually range from $944 to $1,448. The lowest price recently found on this route was $1,147.

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10:00 am - 7:05 am

BOS

SYD

31h 05m

1 stop

5:50 pm - 8:04 am

SYD

BOS

28h 14m

1 stop

$1,147American Airlines

Thu, Apr 9 - Thu, Apr 16

3:16 pm - 7:05 am

BOS

SYD

25h 49m

2 stops

5:50 pm - 8:04 am

SYD

BOS

28h 14m

1 stop

$1,151American Airlines

Thu, Apr 9 - Thu, Apr 16

2:15 pm - 8:05 am

BOS

SYD

26h 50m

2 stops

11:50 am - 9:43 pm

SYD

BOS

24h 53m

2 stops

$1,162United Airlines

Fri, Mar 13 - Sat, Mar 21

10:30 am - 10:30 am

BOS

SYD

34h 00m

2 stops

9:10 am - 11:43 pm

SYD

BOS

28h 33m

1 stop

$1,163Qantas Airways

Tue, Aug 25 - Tue, Sep 1

8:15 am - 6:50 am

BOS

SYD

32h 35m

2 stops

9:15 am - 7:38 pm

SYD

BOS

24h 23m

1 stop

$1,173Delta

Sat, Jul 18 - Sun, Aug 2

6:40 pm - 8:20 am

BOS

SYD

46h 40m

3 stops

9:20 am - 9:49 am

SYD

BOS

38h 29m

2 stops

$1,178Air Canada

Thu, Apr 2 - Thu, Apr 23

5:30 am - 7:20 am

BOS

SYD

35h 50m

2 stops

9:20 am - 9:49 am

SYD

BOS

38h 29m

3 stops

$1,179Air Canada

Wed, Apr 15 - Sun, Apr 26

6:45 pm - 7:20 am

BOS

SYD

46h 35m

2 stops

9:20 am - 5:59 pm

SYD

BOS

46h 39m

2 stops

$1,180Air Canada

Thu, Apr 30 - Fri, May 22

10:40 am - 7:20 am

BOS

SYD

30h 40m

3 stops

9:20 am - 9:50 am

SYD

BOS

38h 30m

2 stops

$1,183Air Canada

Sat, Aug 1 - Sun, Aug 16

8:21 am - 8:05 am

BOS

SYD

32h 44m

1 stop

12:10 pm - 7:44 pm

SYD

BOS

22h 34m

1 stop

$1,187Air New Zealand

Fri, Mar 13 - Sun, Mar 22

American Airlines flights from Boston to Sydney

Our best American Airlines deals on Boston to Sydney flight tickets

American Airlines

Apr 9

BOS10:00 amBoston Logan Intl

31h 05m

1 stop

SYD7:05 amSydney Kingsford Smith

Apr 16

SYD5:50 pmSydney Kingsford Smith

28h 14m

1 stop

BOS8:04 amBoston Logan Intl

$1,147

American Airlines

Apr 9

BOS3:16 pmBoston Logan Intl

25h 49m

2 stops

SYD7:05 amSydney Kingsford Smith

Apr 16

SYD5:50 pmSydney Kingsford Smith

28h 14m

1 stop

BOS8:04 amBoston Logan Intl

$1,151

American Airlines

Mar 7

BOS10:10 amBoston Logan Intl

28h 45m

1 stop

SYD6:55 amSydney Kingsford Smith

Mar 21

SYD5:45 pmSydney Kingsford Smith

27h 46m

1 stop

BOS6:31 amBoston Logan Intl

$1,154

United Airlines flights from Boston to Sydney

Our best United Airlines deals on Boston to Sydney flight tickets

United Airlines

Mar 13

BOS2:59 pmBoston Logan Intl

26h 06m

2 stops

SYD8:05 amSydney Kingsford Smith

Mar 21

SYD10:25 amSydney Kingsford Smith

26h 18m

2 stops

BOS9:43 pmBoston Logan Intl

$1,162

United Airlines

Mar 3

BOS2:20 pmBoston Logan Intl

26h 55m

2 stops

SYD9:15 amSydney Kingsford Smith

Apr 13

SYD9:30 amSydney Kingsford Smith

28h 29m

2 stops

BOS11:59 pmBoston Logan Intl

$1,182

United Airlines

Mar 13

BOS2:59 pmBoston Logan Intl

26h 06m

2 stops

SYD8:05 amSydney Kingsford Smith

Mar 22

SYD2:00 pmSydney Kingsford Smith

20h 44m

1 stop

BOS7:44 pmBoston Logan Intl

$1,188

Fly from

Fly to

Route

Depart

Return

Price

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Thu 4/9

10:00 am-7:05 am

1 stop31h 05m

Sydney Kingsford Smith

Thu 4/16

5:50 pm-8:04 am

1 stop28h 14m

$1,147

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Thu 4/9

3:16 pm-7:05 am

2 stops25h 49m

Sydney Kingsford Smith

Thu 4/16

5:50 pm-8:04 am

1 stop28h 14m

$1,151

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Fri 3/13

2:15 pm-8:05 am

2 stops26h 50m

Sydney Kingsford Smith

Sat 3/21

11:50 am-9:43 pm

2 stops24h 53m

$1,162

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Tue 8/25

10:30 am-10:30 am

2 stops34h 00m

Sydney Kingsford Smith

Tue 9/1

9:10 am-11:43 pm

1 stop28h 33m

$1,163

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sat 7/18

8:15 am-6:50 am

2 stops32h 35m

Sydney Kingsford Smith

Sun 8/2

9:15 am-7:38 pm

1 stop24h 23m

$1,173

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Thu 4/2

6:40 pm-8:20 am

3 stops46h 40m

Sydney Kingsford Smith

Thu 4/23

9:20 am-9:49 am

2 stops38h 29m

$1,178

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Wed 4/15

5:30 am-7:20 am

2 stops35h 50m

Sydney Kingsford Smith

Sun 4/26

9:20 am-9:49 am

3 stops38h 29m

$1,179

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Thu 4/30

6:45 pm-7:20 am

2 stops46h 35m

Sydney Kingsford Smith

Fri 5/22

9:20 am-5:59 pm

2 stops46h 39m

$1,180

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sat 8/1

10:40 am-7:20 am

3 stops30h 40m

Sydney Kingsford Smith

Sun 8/16

9:20 am-9:50 am

2 stops38h 30m

$1,183

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Fri 3/13

8:21 am-8:05 am

1 stop32h 44m

Sydney Kingsford Smith

Sun 3/22

12:10 pm-7:44 pm

1 stop22h 34m

$1,187

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Boston to Sydney

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

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Boston and Sydney?

What is the cheapest month to fly to Sydney?

In general, September is the cheapest month to fly from Boston to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,186. If you are unable to visit Sydney during the month of September, then departing from Boston during the month March is also very affordable. Most momondo users find prices during this month for around $1,215.

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

You are more likely to see cheaper flights to Sydney from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,426 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Boston for as low as $1,268 on momondo.

Can stopping save me money on Boston to Sydney flights?

You could potentially save up to 19% on your flight if you consider stops on a Boston to Sydney flight.

How have Boston to Sydney flight prices changed over time?

As of February 2026, prices for Boston to Sydney flights are approximately 13% cheaper when compared to flights at the same time last year.

When to book flights from Boston to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Boston to Sydney (BOS to SYD) flight deals and tips

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

Fastest flight time	22h 34m
Direct flights	None

The fastest flight from Boston to Sydney takes 22h 34m

There are no direct flights from Boston to Sydney. There are no popular flight routes from Boston to Sydney.

Search flight deals

How far is Boston Logan Intl to Sydney Kingsford Smith by plane?
Boston Logan Intl and Sydney Kingsford Smith are 10084.4 mi apart from one another. Typically, this will take 22h 34m by plane in normal conditions.
When did momondo last update prices for flights from Boston Logan Intl Airport to Sydney Kingsford Smith Airport?
Prices for flights from Boston Logan Intl Airport to Sydney Kingsford Smith Airport were last updated today.
How many operators does momondo search for flights from Boston Logan Intl Airport to Sydney Kingsford Smith Airport?
As of February 2026, there are 10 operators available to choose from for flights from Boston Logan Intl Airport to Sydney Kingsford Smith Airport.
How old do you have to be to fly from Boston Logan Intl Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Boston to Sydney?
Based on momondo bookings for flights between Boston and Sydney, the leading airline is United Airlines, making up 32% of the total bookings. Other popular airlines include Qantas Airways with 30%, Delta with 12%, and American Airlines with 10%.

Best airlines flying from Boston to Sydney

Compare and see reviews for airlines that fly from Boston to Sydney with momondo

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $251	Free Cancellation	Rating 7.2 2,895 reviews	Search JetBlue flights
Delta	PriceFrom $318	Free Cancellation	Rating 7.9 8,240 reviews	Search Delta flights
Fiji Airways	PriceFrom $731	Free Cancellation	Rating 8.0 228 reviews	Search Fiji Airways flights
Air Canada	PriceFrom $735	Free Cancellation	Rating 7.1 10,757 reviews	Search Air Canada flights
United Airlines	PriceFrom $824	Free Cancellation	Rating 7.4 9,360 reviews	Search United Airlines flights
American Airlines	PriceFrom $958	Free Cancellation	Rating 7.1 11,368 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $1,079	Free Cancellation	Rating 7.5 1,000 reviews	Search Qantas Airways flights
Air New Zealand	PriceFrom $1,224	Free Cancellation	Rating 8.0 605 reviews	Search Air New Zealand flights
Qatar Airways	PriceFrom $1,238	Free Cancellation	Rating 7.4 3,745 reviews	Search Qatar Airways flights
Cathay Pacific	PriceFrom $1,318	Free Cancellation	Rating 7.6 1,180 reviews	Search Cathay Pacific flights

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Penrith

Coogee

Manly

Randwick

Lithgow

Leura

Cronulla

Charlestown

Terrigal

Swansea

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Boston to Sydney for you.

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

Yes. All flights to Sydney from Boston on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Sydney from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Boston to Sydney flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Boston to Sydney from $441

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 Sydney departing on 4/19. 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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American Airlines flights from Boston to Sydney

Our best American Airlines deals on Boston to Sydney flight tickets

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Our best United Airlines deals on Boston to Sydney flight tickets

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How to get the cheapest flight ticket from Boston to Sydney

What is the typical price of a round-trip flight between Boston and Sydney?

What is the cheapest month to fly to Sydney?

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

Can stopping save me money on Boston to Sydney flights?

How have Boston to Sydney flight prices changed over time?

What is the cheapest airline that flies from Boston Logan Intl to Sydney Kingsford Smith?

What airlines fly to Sydney?

Which airport is the most popular layover for flights between Boston and Sydney?

Which layover airport offers the lowest fares from Boston to Sydney?

Which layover airport has the shortest travel time from Boston to Sydney?

Which layover airport has the shortest connection time from Boston to Sydney?

When to book flights from Boston to Sydney

Cheap Boston to Sydney (BOS to SYD) flight deals and tips

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

Fastest flight time

Direct flights

Best airlines flying from Boston to Sydney

Compare and see reviews for airlines that fly from Boston to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

An easier way to manage your Sydney trip

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

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing New South Wales

Fly your favorite airline to Sydney

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Sydney

List of cabin classes available on flights landing in Sydney. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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