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, American Airlines, and United Airlines are the most popular carriers 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.

$810 Cheap Flights from Boston to Sydney in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Boston to Sydney

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

10:40 - 08:20BOS Boston Logan Intl-SYD Sydney Kingsford Smith

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

11:20 - 21:28SYD Sydney Kingsford Smith-BOS Boston Logan Intl

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

$1,407Air Canada

Sun, 18 Oct - Mon, 2 Nov

12:45 - 08:20BOS Boston Logan Intl-SYD Sydney Kingsford Smith

28h 35m2 stops Toronto Pearson Intl Vancouver Intl

11:20 - 21:28SYD Sydney Kingsford Smith-BOS Boston Logan Intl

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

$1,414Air Canada

Mon, 19 Oct - Mon, 2 Nov

10:40 - 08:20BOS Boston Logan Intl-SYD Sydney Kingsford Smith

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

11:20 - 21:28SYD Sydney Kingsford Smith-BOS Boston Logan Intl

26h 08m3 stops Vancouver Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$1,418Air Canada

Sun, 18 Oct - Mon, 2 Nov

14:21 - 09:00BOS Boston Logan Intl-SYD Sydney Kingsford Smith

26h 39m1 stop Los Angeles Los Angeles

07:05 - 21:40SYD Sydney Kingsford Smith-BOS Boston Logan Intl

30h 35m2 stops Auckland Intl Los Angeles Los Angeles

$1,660Qantas Airways

Mon, 25 Jan - Sat, 6 Feb

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

26h 35m1 stop Los Angeles Los Angeles

07:05 - 21:40SYD Sydney Kingsford Smith-BOS Boston Logan Intl

30h 35m2 stops Auckland Intl Los Angeles Los Angeles

$1,660Qantas Airways

Sun, 8 Nov - Sat, 6 Feb

19:00 - 09:00BOS Boston Logan Intl-SYD Sydney Kingsford Smith

46h 00m1 stop Los Angeles Los Angeles

07:05 - 23:57SYD Sydney Kingsford Smith-BOS Boston Logan Intl

32h 52m2 stops Auckland Intl Los Angeles Los Angeles

$1,678Qantas Airways

Sat, 5 Dec - Sat, 12 Dec

15:31 - 08:05BOS Boston Logan Intl-SYD Sydney Kingsford Smith

25h 34m2 stops Chicago O'Hare Intl Los Angeles Los Angeles

14:05 - 19:33SYD Sydney Kingsford Smith-BOS Boston Logan Intl

21h 28m1 stop Dallas/Fort Worth

$1,795American Airlines

Sun, 18 Oct - Mon, 2 Nov

12:45 - 08:00BOS Boston Logan Intl-SYD Sydney Kingsford Smith

28h 15m2 stops Chicago O'Hare Intl Los Angeles Los Angeles

09:20 - 14:21SYD Sydney Kingsford Smith-BOS Boston Logan Intl

21h 01m1 stop Houston George Bush Intcntl

$1,800United Airlines

Mon, 19 Oct - Mon, 2 Nov

18:17 - 07:55BOS Boston Logan Intl-SYD Sydney Kingsford Smith

22h 38m1 stop San Francisco

11:50 - 16:49SYD Sydney Kingsford Smith-BOS Boston Logan Intl

20h 59m1 stop San Francisco

$1,800United Airlines

Mon, 19 Oct - Mon, 2 Nov

15:31 - 08:05BOS Boston Logan Intl-SYD Sydney Kingsford Smith

25h 34m2 stops Chicago O'Hare Intl Los Angeles Los Angeles

11:15 - 16:29SYD Sydney Kingsford Smith-BOS Boston Logan Intl

21h 14m1 stop Los Angeles Los Angeles

$1,806American Airlines

Sun, 18 Oct - Mon, 2 Nov

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

09:20 - 21:26SYD Sydney Kingsford Smith-BOS Boston Logan Intl

26h 06m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,920Air Canada

Wed, 9 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

$1,922Air Canada

Wed, 9 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 - 21:26SYD Sydney Kingsford Smith-BOS Boston Logan Intl

26h 06m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,922Air Canada

Tue, 8 Sep - Wed, 23 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 30m3 stops Vancouver Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$1,931Air Canada

Wed, 9 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 30m3 stops Vancouver Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$1,933Air Canada

Tue, 8 Sep - Wed, 23 Sep

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

30h 40m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Vancouver Intl

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

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

$1,933Air Canada

Wed, 9 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 - 21:26SYD Sydney Kingsford Smith-BOS Boston Logan Intl

26h 06m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

$1,972Air Canada

Wed, 9 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

$1,972Air Canada

Tue, 8 Sep - Wed, 23 Sep

09:29 - 08:00BOS Boston Logan Intl-SYD Sydney Kingsford Smith

32h 31m2 stops Dallas/Fort Worth Melbourne

09:10 - 23:28SYD Sydney Kingsford Smith-BOS Boston Logan Intl

28h 18m1 stop Los Angeles Los Angeles

$2,599Qantas Airways

Wed, 9 Sep - Wed, 23 Sep

16:59 - 07:05BOS Boston Logan Intl-SYD Sydney Kingsford Smith

24h 06m1 stop Los Angeles Los Angeles

06:25 - 23:28SYD Sydney Kingsford Smith-BOS Boston Logan Intl

31h 03m2 stops Melbourne Los Angeles Los Angeles

$4,965Qantas Airways

Sat, 5 Sep - Sat, 26 Sep

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Air Canada flights from Boston to Sydney

Our best Air Canada deals on Boston to Sydney flight tickets

Air Canada

18 Oct

BOS10:40Boston Logan Intl

30h 40m

2 stops

SYD08:20Sydney Kingsford Smith

2 Nov

SYD11:20Sydney Kingsford Smith

26h 08m

2 stops

BOS21:28Boston Logan Intl

$1,407

Air Canada

19 Oct

BOS12:45Boston Logan Intl

28h 35m

2 stops

SYD08:20Sydney Kingsford Smith

2 Nov

SYD11:20Sydney Kingsford Smith

26h 08m

2 stops

BOS21:28Boston Logan Intl

$1,414

Air Canada

18 Oct

BOS10:40Boston Logan Intl

30h 40m

2 stops

SYD08:20Sydney Kingsford Smith

2 Nov

SYD11:20Sydney Kingsford Smith

26h 08m

3 stops

BOS21:28Boston Logan Intl

$1,418

Air New Zealand flights from Boston to Sydney

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

Air New Zealand

20 Oct

BOS10:40Boston Logan Intl

30h 40m

2 stops

SYD08:20Sydney Kingsford Smith

10 Nov

SYD11:20Sydney Kingsford Smith

26h 08m

2 stops

BOS21:28Boston Logan Intl

$1,663

Air New Zealand

19 Oct

BOS10:40Boston Logan Intl

30h 40m

2 stops

SYD08:20Sydney Kingsford Smith

10 Nov

SYD11:20Sydney Kingsford Smith

26h 08m

2 stops

BOS21:28Boston Logan Intl

$1,664

Air New Zealand

19 Oct

BOS12:45Boston Logan Intl

28h 35m

1 stop

SYD08:20Sydney Kingsford Smith

3 Nov

SYD11:20Sydney Kingsford Smith

26h 08m

2 stops

BOS21:28Boston Logan Intl

$1,670

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Sun 18/10

10:40-08:20

2 stops30h 40m

Sydney Kingsford Smith

Mon 2/11

11:20-21:28

2 stops26h 08m

$1,407

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Mon 19/10

12:45-08:20

2 stops28h 35m

Sydney Kingsford Smith

Mon 2/11

11:20-21:28

2 stops26h 08m

$1,414

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Sun 18/10

10:40-08:20

2 stops30h 40m

Sydney Kingsford Smith

Mon 2/11

11:20-21:28

3 stops26h 08m

$1,418

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Mon 25/1

14:21-09:00

1 stop26h 39m

Sydney Kingsford Smith

Sat 6/2

07:05-21:40

2 stops30h 35m

$1,660

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Sun 8/11

14:25-09:00

1 stop26h 35m

Sydney Kingsford Smith

Sat 6/2

07:05-21:40

2 stops30h 35m

$1,660

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Sat 5/12

19:00-09:00

1 stop46h 00m

Sydney Kingsford Smith

Sat 12/12

07:05-23:57

2 stops32h 52m

$1,678

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Sun 18/10

15:31-08:05

2 stops25h 34m

Sydney Kingsford Smith

Mon 2/11

14:05-19:33

1 stop21h 28m

$1,795

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Mon 19/10

12:45-08:00

2 stops28h 15m

Sydney Kingsford Smith

Mon 2/11

09:20-14:21

1 stop21h 01m

$1,800

Fastest return journey

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Mon 19/10

18:17-07:55

1 stop22h 38m

Sydney Kingsford Smith

Mon 2/11

11:50-16:49

1 stop20h 59m

$1,800

BostonSydney

BOS Boston Logan Intl - SYD Sydney Kingsford Smith

BOSSYD

Boston Logan Intl

Sun 18/10

15:31-08:05

2 stops25h 34m

Sydney Kingsford Smith

Mon 2/11

11:15-16:29

1 stop21h 14m

$1,806

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 $1,698 to $2,031.
The lowest price recently found on this route was $1,407.

What is the cheapest month to fly to Sydney?

The month of March is, on average, the cheapest month to fly to Sydney from Boston, with most prices found around $1,764. If you aren’t able to travel to Sydney during the month of March, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $1,839.

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 $2,040 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 $1,873 on momondo.

Can stopping save me money on Boston to Sydney flights?

You could potentially save up to 3% 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	$810
Fastest flight time	24h 40m
Direct flights	None

The best one-way flight to Sydney from Boston in the past 72 hours is $810. The best return flight deal from Boston to Sydney found on momondo in the last 72 hours is $1,407.

The fastest flight from Boston to Sydney takes 24h 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 24h 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 32% and United Airlines with 30%.

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 $1,366	Free cancellation	Rating 7.5 1,089 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $1,477	Free cancellation	Rating 7.1 12,045 reviews	Search American Airlines flights
United Airlines	PriceFrom $1,719	Free cancellation	Rating 7.4 10,169 reviews	Search United Airlines flights

Parramatta

Terrigal

Wollongong

Katoomba

Penrith

Lithgow

Manly

Coogee

Randwick

Cronulla

Leura

Charlestown

Bondi Beach

Swansea

Newport

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.