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 2 operators available for flights from Boston Logan Intl Airport to Sydney Kingsford Smith Airport as of April 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.

$771 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 low for flights on this route. Typical prices usually range from $2,418 to $1,823. The lowest price recently found on this route was $1,835.

1 adult

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Find the cheapest flights from Boston to Sydney

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:00 - 07:05

BOS

SYD

35h 05m

2 stops

09:10 - 08:44

SYD

BOS

37h 34m

2 stops

$1,835Multiple Airlines

Wed, 13 May - Tue, 19 May

09:12 - 07:05

BOS

SYD

31h 53m

2 stops

09:10 - 07:52

SYD

BOS

36h 42m

2 stops

$1,865Multiple Airlines

Tue, 2 Jun - Tue, 16 Jun

08:10 - 09:25

BOS

SYD

35h 15m

2 stops

20:55 - 14:45

SYD

BOS

31h 50m

2 stops

$1,898ANA

Sun, 23 Aug - Sun, 30 Aug

18:00 - 07:05

BOS

SYD

23h 05m

1 stop

09:10 - 20:38

SYD

BOS

25h 28m

1 stop

$1,906Qantas Airways

Tue, 2 Jun - Tue, 16 Jun

18:00 - 07:05

BOS

SYD

23h 05m

1 stop

12:00 - 22:14

SYD

BOS

24h 14m

1 stop

$1,909Qantas Airways

Mon, 1 Jun - Mon, 15 Jun

21:50 - 19:10

BOS

SYD

31h 20m

2 stops

21:05 - 19:55

SYD

BOS

36h 50m

2 stops

$1,914Turkish Airlines

Mon, 4 May - Fri, 8 May

07:19 - 19:10

BOS

SYD

45h 51m

2 stops

20:55 - 14:45

SYD

BOS

31h 50m

2 stops

$1,923ANA

Sat, 8 Aug - Sun, 30 Aug

21:50 - 19:10

BOS

SYD

31h 20m

2 stops

21:05 - 19:55

SYD

BOS

36h 50m

2 stops

$1,924Turkish Airlines

Mon, 7 Sep - Fri, 18 Sep

05:50 - 07:20

BOS

SYD

35h 30m

2 stops

09:20 - 09:45

SYD

BOS

38h 25m

2 stops

$1,930Air Canada

Mon, 11 May - Mon, 8 Jun

17:35 - 07:05

BOS

SYD

23h 30m

1 stop

09:10 - 16:31

SYD

BOS

21h 21m

1 stop

$1,934Qantas Airways

Wed, 9 Sep - Tue, 22 Sep

ANA flights from Boston to Sydney

Our best ANA deals on Boston to Sydney flight tickets

ANA

23 Aug

BOS08:10Boston Logan Intl

35h 15m

2 stops

SYD09:25Sydney Kingsford Smith

30 Aug

SYD20:55Sydney Kingsford Smith

31h 50m

2 stops

BOS14:45Boston Logan Intl

$1,898

ANA

8 Aug

BOS06:00Boston Logan Intl

47h 10m

2 stops

SYD19:10Sydney Kingsford Smith

30 Aug

SYD20:55Sydney Kingsford Smith

36h 21m

2 stops

BOS19:16Boston Logan Intl

$1,923

ANA

23 Aug

BOS07:10Boston Logan Intl

36h 15m

2 stops

SYD09:25Sydney Kingsford Smith

1 Sept

SYD11:45Sydney Kingsford Smith

42h 36m

2 stops

BOS16:21Boston Logan Intl

$1,955

Qantas Airways flights from Boston to Sydney

Our best Qantas Airways deals on Boston to Sydney flight tickets

Qantas Airways

2 June

BOS18:00Boston Logan Intl

23h 05m

1 stop

SYD07:05Sydney Kingsford Smith

16 June

SYD09:10Sydney Kingsford Smith

25h 28m

1 stop

BOS20:38Boston Logan Intl

$1,906

Qantas Airways

1 June

BOS18:00Boston Logan Intl

23h 05m

1 stop

SYD07:05Sydney Kingsford Smith

8 June

SYD12:00Sydney Kingsford Smith

25h 09m

1 stop

BOS23:09Boston Logan Intl

$1,909

Qantas Airways

9 Sept

BOS17:35Boston Logan Intl

23h 30m

1 stop

SYD07:05Sydney Kingsford Smith

22 Sept

SYD09:10Sydney Kingsford Smith

21h 21m

1 stop

BOS16:31Boston Logan Intl

$1,934

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Wed 13/5

06:00-07:05

2 stops35h 05m

Sydney Kingsford Smith

Tue 19/5

09:10-08:44

2 stops37h 34m

$1,835

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Tue 2/6

09:12-07:05

2 stops31h 53m

Sydney Kingsford Smith

Tue 16/6

09:10-07:52

2 stops36h 42m

$1,865

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sun 23/8

08:10-09:25

2 stops35h 15m

Sydney Kingsford Smith

Sun 30/8

20:55-14:45

2 stops31h 50m

$1,898

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Tue 2/6

18:00-07:05

1 stop23h 05m

Sydney Kingsford Smith

Tue 16/6

09:10-20:38

1 stop25h 28m

$1,906

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Mon 1/6

18:00-07:05

1 stop23h 05m

Sydney Kingsford Smith

Mon 15/6

12:00-22:14

1 stop24h 14m

$1,909

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Mon 4/5

21:50-19:10

2 stops31h 20m

Sydney Kingsford Smith

Fri 8/5

21:05-19:55

2 stops36h 50m

$1,914

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Sat 8/8

07:19-19:10

2 stops45h 51m

Sydney Kingsford Smith

Sun 30/8

20:55-14:45

2 stops31h 50m

$1,923

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Mon 7/9

21:50-19:10

2 stops31h 20m

Sydney Kingsford Smith

Fri 18/9

21:05-19:55

2 stops36h 50m

$1,924

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Mon 11/5

05:50-07:20

2 stops35h 30m

Sydney Kingsford Smith

Mon 8/6

09:20-09:45

2 stops38h 25m

$1,930

Fastest return journey

BostonSydney

BOS - SYD

BOSSYD

Boston Logan Intl

Wed 9/9

17:35-07:05

1 stop23h 30m

Sydney Kingsford Smith

Tue 22/9

09:10-16:31

1 stop21h 21m

$1,934

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

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

What is the cheapest month to fly to Sydney?

The month of September is, on average, the cheapest month to fly to Sydney from Boston, with most prices found around $1,700. If you aren’t able to travel to Sydney during the month of September, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,826.

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 $2,087 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 $1,875 on momondo.

Can stopping save me money on Boston to Sydney flights?

You could potentially save up to 35% 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 April 2026, prices for Boston to Sydney flights are approximately 1% 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

Fastest flight time	23h 05m
Direct flights	None

The fastest flight from Boston to Sydney takes 23h 05m

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 05m 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 2 operators available for flights from Boston Logan Intl Airport to Sydney Kingsford Smith Airport as of April 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 56% of the total bookings. Other popular airlines include United Airlines with 44%.

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 $1,374	Free cancellation	Rating 7.5 1,027 reviews		Search Qantas Airways flights
United Airlines	PriceFrom $1,630	Free cancellation	Rating 7.4 9,649 reviews		Search United Airlines flights

Parramatta

Wollongong

Terrigal

Penrith

Katoomba

Lithgow

Manly

Coogee

Leura

Bondi Beach

Cronulla

Randwick

Charlestown

Newport

Swansea

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.