Which airlines fly to Sydney?

Qantas Airways, American Airlines and United Airlines are the top three most popular airlines that fly to Sydney from Boston according to our data. Qantas Airways is the first choice among our users, with 38% of people opting to fly with this airline when travelling to Sydney. Keep in mind that there are 3 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

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

Qantas Airways is the most popular carrier operating from Boston Logan Intl to Sydney Kingsford Smith

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 refresh daily.

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

There are 3 operators available for flights from Boston Logan Intl Airport to Sydney Kingsford Smith Airport as of September 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. 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 travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$890 Cheap Flights from Boston to Sydney in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Boston to Sydney

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One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

16:45 - 09:00BOS Boston Logan Intl-SYD Sydney Kingsford Smith

24h 15m1 stop Los Angeles Los Angeles

11:20 - 22:16SYD Sydney Kingsford Smith-BOS Boston Logan Intl

26h 56m1 stop Los Angeles Los Angeles

$1,425Qantas Airways

Fri, 26 Feb - Sun, 7 Mar

10:25 - 09:35BOS Boston Logan Intl-SYD Sydney Kingsford Smith

31h 10m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

11:20 - 21:25SYD Sydney Kingsford Smith-BOS Boston Logan Intl

26h 05m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,471Air Canada

Fri, 26 Feb - Sun, 7 Mar

15:30 - 09:35BOS Boston Logan Intl-SYD Sydney Kingsford Smith

26h 05m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

11:20 - 20:25SYD Sydney Kingsford Smith-BOS Boston Logan Intl

25h 05m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,475Air Canada

Sun, 28 Feb - Sun, 14 Mar

10:40 - 08:35BOS Boston Logan Intl-SYD Sydney Kingsford Smith

30h 55m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

10:20 - 21:28SYD Sydney Kingsford Smith-BOS Boston Logan Intl

26h 08m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,485Air Canada

Sun, 25 Oct - Sat, 31 Oct

17:45 - 08:05BOS Boston Logan Intl-SYD Sydney Kingsford Smith

23h 20m1 stop Los Angeles Los Angeles

11:10 - 16:29SYD Sydney Kingsford Smith-BOS Boston Logan Intl

21h 19m1 stop Los Angeles Los Angeles

$1,721Qantas Airways

Sun, 18 Oct - Mon, 2 Nov

14:25 - 09:00BOS Boston Logan Intl-SYD Sydney Kingsford Smith

27h 35m1 stop Los Angeles Los Angeles

11:10 - 16:29SYD Sydney Kingsford Smith-BOS Boston Logan Intl

21h 19m1 stop Los Angeles Los Angeles

$1,754Qantas Airways

Tue, 27 Oct - Tue, 10 Nov

07:00 - 08:05BOS Boston Logan Intl-SYD Sydney Kingsford Smith

34h 05m1 stop Los Angeles Los Angeles

11:10 - 20:51SYD Sydney Kingsford Smith-BOS Boston Logan Intl

25h 41m2 stops Los Angeles Los Angeles Chicago O'Hare Intl

$1,807American Airlines

Sun, 18 Oct - Mon, 2 Nov

17:45 - 08:05BOS Boston Logan Intl-SYD Sydney Kingsford Smith

23h 20m1 stop Los Angeles Los Angeles

11:10 - 19:33SYD Sydney Kingsford Smith-BOS Boston Logan Intl

24h 23m2 stops Los Angeles Los Angeles Dallas/Fort Worth

$1,810American Airlines

Sun, 18 Oct - Mon, 2 Nov

14:36 - 09:20BOS Boston Logan Intl-SYD Sydney Kingsford Smith

26h 44m2 stops Washington, D.C. Dulles Intl San Francisco

11:50 - 19:40SYD Sydney Kingsford Smith-BOS Boston Logan Intl

23h 50m1 stop San Francisco

$1,811United Airlines

Tue, 8 Dec - Mon, 18 Jan

14:36 - 09:20BOS Boston Logan Intl-SYD Sydney Kingsford Smith

26h 44m2 stops Washington, D.C. Dulles Intl San Francisco

09:20 - 18:23SYD Sydney Kingsford Smith-BOS Boston Logan Intl

25h 03m2 stops Houston George Bush Intcntl Newark

$1,811United Airlines

Tue, 8 Dec - Mon, 18 Jan

Cheap last-minute flights

Enter your travel dates to find the best prices.

10:40 - 07:20BOS Boston Logan Intl-SYD Sydney Kingsford Smith

30h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

10:20 - 09:50SYD Sydney Kingsford Smith-BOS Boston Logan Intl

38h 30m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,926Air Canada

Wed, 16 Sep - Wed, 7 Oct

10:40 - 07:20BOS Boston Logan Intl-SYD Sydney Kingsford Smith

30h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

09:20 - 09:50SYD Sydney Kingsford Smith-BOS Boston Logan Intl

38h 30m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,926Air Canada

Tue, 15 Sep - Tue, 29 Sep

10:40 - 07:20BOS Boston Logan Intl-SYD Sydney Kingsford Smith

30h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

09:20 - 09:50SYD Sydney Kingsford Smith-BOS Boston Logan Intl

38h 30m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,926Air Canada

Tue, 15 Sep - Tue, 22 Sep

10:40 - 07:20BOS Boston Logan Intl-SYD Sydney Kingsford Smith

30h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

09:20 - 09:50SYD Sydney Kingsford Smith-BOS Boston Logan Intl

38h 30m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,929Air Canada

Tue, 15 Sep - Tue, 29 Sep

10:40 - 07:20BOS Boston Logan Intl-SYD Sydney Kingsford Smith

30h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

09:20 - 09:50SYD Sydney Kingsford Smith-BOS Boston Logan Intl

38h 30m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,930Air Canada

Tue, 15 Sep - Tue, 29 Sep

10:40 - 07:20BOS Boston Logan Intl-SYD Sydney Kingsford Smith

30h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

09:20 - 09:50SYD Sydney Kingsford Smith-BOS Boston Logan Intl

38h 30m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,931Air Canada

Tue, 15 Sep - Tue, 29 Sep

10:40 - 07:20BOS Boston Logan Intl-SYD Sydney Kingsford Smith

30h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

10:20 - 09:50SYD Sydney Kingsford Smith-BOS Boston Logan Intl

38h 30m3 stops Vancouver Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$1,937Air Canada

Wed, 16 Sep - Wed, 7 Oct

10:50 - 07:20BOS Boston Logan Intl-SYD Sydney Kingsford Smith

30h 30m1 stop Toronto Pearson Intl

09:20 - 14:41SYD Sydney Kingsford Smith-BOS Boston Logan Intl

43h 21m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$2,039Air New Zealand

Tue, 15 Sep - Tue, 22 Sep

10:30 - 07:05BOS Boston Logan Intl-SYD Sydney Kingsford Smith

30h 35m1 stop Los Angeles Los Angeles

18:30 - 21:27SYD Sydney Kingsford Smith-BOS Boston Logan Intl

40h 57m2 stops Melbourne Dallas/Fort Worth

$3,161Qantas Airways

Fri, 18 Sep - Sun, 20 Sep

16:35 - 07:05BOS Boston Logan Intl-SYD Sydney Kingsford Smith

24h 30m1 stop Los Angeles Los Angeles

10:10 - 23:43SYD Sydney Kingsford Smith-BOS Boston Logan Intl

28h 33m1 stop Los Angeles Los Angeles

$13,267Qantas Airways

Tue, 15 Sep - Thu, 8 Oct

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Air New Zealand flights from Boston to Sydney

Our best Air New Zealand deals on Boston to Sydney flight tickets

Air New Zealand

17 Feb

BOS11:05Boston Logan Intl

30h 30m

1 stop

SYD09:35Sydney Kingsford Smith

3 Mar

SYD11:20Sydney Kingsford Smith

26h 05m

2 stops

BOS21:25Boston Logan Intl

$1,632

Air New Zealand

7 Nov

BOS19:40Boston Logan Intl

45h 55m

1 stop

SYD09:35Sydney Kingsford Smith

22 Nov

SYD11:20Sydney Kingsford Smith

26h 08m

2 stops

BOS21:28Boston Logan Intl

$1,639

Air New Zealand

18 Oct

BOS10:40Boston Logan Intl

30h 40m

2 stops

SYD08:20Sydney Kingsford Smith

2 Nov

SYD11:20Sydney Kingsford Smith

27h 17m

1 stop

BOS22:37Boston Logan Intl

$1,652

Air Canada flights from Boston to Sydney

Our best Air Canada deals on Boston to Sydney flight tickets

Air Canada

26 Feb

BOS10:25Boston Logan Intl

31h 10m

2 stops

SYD09:35Sydney Kingsford Smith

7 Mar

SYD11:20Sydney Kingsford Smith

26h 05m

2 stops

BOS21:25Boston Logan Intl

$1,471

Air Canada

28 Feb

BOS15:30Boston Logan Intl

26h 05m

2 stops

SYD09:35Sydney Kingsford Smith

14 Mar

SYD11:20Sydney Kingsford Smith

25h 05m

2 stops

BOS20:25Boston Logan Intl

$1,475

Air Canada

25 Oct

BOS10:40Boston Logan Intl

30h 55m

2 stops

SYD08:35Sydney Kingsford Smith

31 Oct

SYD10:20Sydney Kingsford Smith

26h 08m

2 stops

BOS21:28Boston Logan Intl

$1,485

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Fri 26/2

16:45-09:00

1 stop24h 15m

Sydney Kingsford Smith

Sun 7/3

11:20-22:16

1 stop26h 56m

$1,425

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Fri 26/2

10:25-09:35

2 stops31h 10m

Sydney Kingsford Smith

Sun 7/3

11:20-21:25

2 stops26h 05m

$1,471

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Sun 28/2

15:30-09:35

2 stops26h 05m

Sydney Kingsford Smith

Sun 14/3

11:20-20:25

2 stops25h 05m

$1,475

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Sun 25/10

10:40-08:35

2 stops30h 55m

Sydney Kingsford Smith

Sat 31/10

10:20-21:28

2 stops26h 08m

$1,485

Fastest return journey

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Sun 18/10

17:45-08:05

1 stop23h 20m

Sydney Kingsford Smith

Mon 2/11

11:10-16:29

1 stop21h 19m

$1,721

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Tue 27/10

14:25-09:00

1 stop27h 35m

Sydney Kingsford Smith

Tue 10/11

11:10-16:29

1 stop21h 19m

$1,754

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Sun 18/10

07:00-08:05

1 stop34h 05m

Sydney Kingsford Smith

Mon 2/11

11:10-20:51

2 stops25h 41m

$1,807

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Sun 18/10

17:45-08:05

1 stop23h 20m

Sydney Kingsford Smith

Mon 2/11

11:10-19:33

2 stops24h 23m

$1,810

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Tue 8/12

14:36-09:20

2 stops26h 44m

Sydney Kingsford Smith

Mon 18/1

11:50-19:40

1 stop23h 50m

$1,811

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Tue 8/12

14:36-09:20

2 stops26h 44m

Sydney Kingsford Smith

Mon 18/1

09:20-18:23

2 stops25h 03m

$1,811

Flights are sorted by cheapest return 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

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

Prices are currently low for flights on this route.

Typical prices usually range from $1,701 to $2,078.
The lowest price recently found on this route was $1,425.

What is the cheapest month to fly to Sydney?

The month of May is, on average, the cheapest month to fly to Sydney from Boston, with most prices found around $1,757. If you aren’t able to travel to Sydney during the month of May, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,768.

How far in advance should I book a flight from Boston 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 $2,031 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Boston for as low as $1,877 on momondo.

Can stopping save me money on Boston to Sydney flights?

You could potentially save up to 21% 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 September 2026, prices for Boston to Sydney flights are approximately 40% 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 return 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

Best price found	$890
Fastest flight time	23h 40m
Direct flights	None

The best one-way flight to Sydney from Boston in the past 72 hours is $890. The best return flight deal from Boston to Sydney found on momondo in the last 72 hours is $1,425.

The fastest flight from Boston to Sydney takes 23h 40m

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

Search flight deals

Frequently asked questions about flying from Boston to Sydney

How far is Boston Logan Intl to Sydney Kingsford Smith by plane?
The straight-line distance from Boston Logan Intl to Sydney Kingsford Smith is 16229.2 km. Typically, this will take 23h 40m 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 refresh daily.
How many operators does momondo search for flights from Boston Logan Intl Airport to Sydney Kingsford Smith Airport?
There are 3 operators available for flights from Boston Logan Intl Airport to Sydney Kingsford Smith Airport as of September 2026.
How old do you have to be to fly from Boston Logan Intl Airport to Sydney Kingsford Smith Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. 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 travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Boston to Sydney?
Based on momondo bookings for flights between Boston and Sydney, the leading airline is Qantas Airways, making up 38% of the total bookings. Other popular airlines include American Airlines with 33% and United Airlines with 28%.

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
Qantas Airways	PriceFrom $1,369	Free cancellation	Rating 7.5 1,093 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $1,480	Free cancellation	Rating 7.1 12,051 reviews	Search American Airlines flights
United Airlines	PriceFrom $1,723	Free cancellation	Rating 7.4 10,213 reviews	Search United Airlines flights

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Why use momondo?

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

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 Sydney from Boston.

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

Yes. momondo enables you to select and highlight flights to Sydney from Boston with this policy.

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

Once you have performed a search for Boston to Sydney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to Sydney, momondo offers a useful price alert feature which will track prices for flights to Sydney from Boston and alert you when they change.