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Cheap flights from Boston to Sydney from $754

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 3/2. 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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Find the cheapest flights from Boston to Sydney

Cheap return flights

These are some of the best return flight deals from Boston to Sydney that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Boston to Sydney.

Cheap last-minute flights

Planning a quick getaway from Boston to Sydney? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Sydney, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Boston to Sydney

Find recent return train or bus tickets from Boston to Sydney.

All return flight deals from Boston to Sydney

The cheapest plane tickets from Boston to Sydney found on KAYAK recently.
07:00 - 21:50BOS-SYD
47h 50m3 stops
14:00 - 10:09SYD-BOS
35h 09m3 stops
$1,683
Find Deal
Tue, 18 Mar - Tue, 25 Mar
18:00 - 09:00BOS-SYD
24h 00m1 stop
11:15 - 17:07SYD-BOS
20h 52m1 stop
$1,760American Airlines
Find Deal
Thu, 13 Mar - Fri, 28 Mar
08:00 - 09:00BOS-SYD
33h 00m1 stop
11:15 - 17:07SYD-BOS
20h 52m1 stop
$1,765American Airlines
Find Deal
Sat, 1 Mar - Fri, 14 Mar
15:40 - 08:20BOS-SYD
25h 40m2 stops
09:20 - 10:07SYD-BOS
38h 47m2 stops
$1,864Air Canada
Find Deal
Tue, 1 Apr - Tue, 15 Apr
10:50 - 08:20BOS-SYD
30h 30m3 stops
09:20 - 09:35SYD-BOS
38h 15m2 stops
$1,874Air Canada
Find Deal
Tue, 1 Apr - Sun, 11 May
19:59 - 19:45BOS-SYD
31h 46m2 stops
21:40 - 16:27SYD-BOS
33h 47m2 stops
$1,946Alaska Airlines
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Thu, 6 Mar - Tue, 18 Mar
16:27 - 12:30BOS-SYD
28h 03m2 stops
06:15 - 21:34SYD-BOS
31h 19m2 stops
$2,002Fiji Airways
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Tue, 11 Feb - Tue, 25 Feb
15:10 - 07:00BOS-SYD
25h 50m2 stops
09:30 - 21:55SYD-BOS
26h 25m1 stop
$2,039United Airlines
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Wed, 9 Jul - Mon, 21 Jul
13:50 - 09:15BOS-SYD
27h 25m1 stop
12:10 - 19:42SYD-BOS
22h 32m1 stop
$2,044United Airlines
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Thu, 6 Mar - Thu, 13 Mar
16:30 - 19:45BOS-SYD
35h 15m3 stops
21:40 - 17:24SYD-BOS
35h 44m2 stops
$2,397Alaska Airlines
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Sun, 2 Feb - Sun, 2 Mar
11:46 - 12:30BOS-SYD
56h 44m3 stops
Mon, 3 Feb
06:00 - 21:50BOS-SYD
47h 50m3 stops
Tue, 4 Feb
09:52 - 12:30BOS-SYD
59h 38m3 stops
Mon, 17 Mar
16:27 - 12:30BOS-SYD
28h 03m2 stops
$937Fiji Airways
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Tue, 11 Feb
17:58 - 12:30BOS-SYD
27h 32m2 stops
$940Fiji Airways
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Tue, 18 Mar
15:40 - 08:35BOS-SYD
25h 55m2 stops
$948Air Canada
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Mon, 17 Mar
07:00 - 08:35BOS-SYD
34h 35m3 stops
$958Air Canada
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Tue, 18 Mar
11:02 - 06:55BOS-SYD
29h 53m3 stops
$1,442United Airlines
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Tue, 24 Jun
08:30 - 06:55BOS-SYD
32h 25m3 stops
$1,546United Airlines
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Fri, 27 Jun
18:00 - 09:00BOS-SYD
23h 00m1 stop
$7,859Qantas Airways
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Thu, 20 Feb
08:15 - 09:00BOS-SYD
32h 45m1 stop
11:15 - 17:08SYD-BOS
21h 53m1 stop
$1,832American Airlines
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Wed, 22 Jan - Wed, 29 Jan
14:52 - 09:00BOS-SYD
26h 08m2 stops
11:15 - 19:22SYD-BOS
24h 07m2 stops
$1,838American Airlines
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Wed, 22 Jan - Wed, 29 Jan
18:05 - 09:00BOS-SYD
22h 55m1 stop
09:10 - 22:11SYD-BOS
27h 01m1 stop
$2,031American Airlines
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Sun, 26 Jan - Fri, 16 May
15:35 - 09:05BOS-SYD
25h 30m2 stops
09:30 - 18:44SYD-BOS
23h 14m2 stops
$2,074United Airlines
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Sun, 26 Jan - Thu, 10 Jul
09:31 - 07:25BOS-SYD
29h 54m2 stops
17:25 - 06:00SYD-BOS
28h 35m1 stop
$2,421
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Sat, 25 Jan - Mon, 27 Jan
07:10 - 09:35BOS-SYD
58h 25m3 stops
11:20 - 10:08SYD-BOS
38h 48m2 stops
$2,863Air Canada
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Wed, 22 Jan - Wed, 29 Jan
10:50 - 09:35BOS-SYD
54h 45m3 stops
14:00 - 09:28SYD-BOS
35h 28m3 stops
$3,059
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Wed, 22 Jan - Wed, 29 Jan
07:10 - 09:35BOS-SYD
34h 25m3 stops
09:20 - 09:35SYD-BOS
38h 15m2 stops
$3,253Air Canada
Find Deal
Sun, 26 Jan - Thu, 10 Jul
08:15 - 09:00BOS-SYD
32h 45m1 stop
17:25 - 07:15SYD-BOS
29h 50m1 stop
$4,285Qantas Airways
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Fri, 24 Jan - Sun, 26 Jan
18:05 - 07:25BOS-SYD
45h 20m1 stop
19:15 - 23:09SYD-BOS
43h 54m2 stops
$6,396Qantas Airways
Find Deal
Sun, 26 Jan - Sun, 9 Feb

JetBlue flights from Boston to Sydney

Our best JetBlue deals on Boston to Sydney flight tickets
JetBlue
11 Apr
BOS22:00Boston Logan Intl
29h 10m
1 stop
SYD17:10Sydney Kingsford Smith
19 Apr
SYD20:45Sydney Kingsford Smith
32h 05m
1 stop
BOS14:50Boston Logan Intl
JetBlue
11 Mar
BOS22:15Boston Logan Intl
29h 35m
1 stop
SYD18:50Sydney Kingsford Smith
22 Mar
SYD21:40Sydney Kingsford Smith
32h 15m
1 stop
BOS14:55Boston Logan Intl

American Airlines flights from Boston to Sydney

Our best American Airlines deals on Boston to Sydney flight tickets
American Airlines
13 Mar
BOS18:00Boston Logan Intl
24h 00m
1 stop
SYD09:00Sydney Kingsford Smith
28 Mar
SYD11:15Sydney Kingsford Smith
20h 52m
1 stop
BOS17:07Boston Logan Intl
American Airlines
1 Mar
BOS08:00Boston Logan Intl
33h 00m
1 stop
SYD09:00Sydney Kingsford Smith
14 Mar
SYD11:15Sydney Kingsford Smith
20h 52m
1 stop
BOS17:07Boston Logan Intl
American Airlines
5 Mar
BOS08:00Boston Logan Intl
33h 00m
1 stop
SYD09:00Sydney Kingsford Smith
19 Mar
SYD11:15Sydney Kingsford Smith
20h 52m
1 stop
BOS17:07Boston Logan Intl

See travel insights to Sydney from

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 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 $1,909. If you aren’t able to travel to Sydney during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $2,134.

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

Our data shows that Thursday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $0. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $2,586.

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

According to our data, the cheapest time of day to fly to Sydney is in the evening. momondo users have found flights departing from Boston to Sydney in the evening for as low as $2,162. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $3,137 on average. Flights to Sydney from Boston in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 9 weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $2,422 when searching 9 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 $2,015 on momondo.

How have Boston to Sydney flight prices changed over time?

As of January 2025, prices for Boston to Sydney flights are approximately 34% 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

$754

Fastest flight time

22h 34m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from Boston in the past 72 hours is $754. The best return flight deal from Boston to Sydney found on momondo in the last 72 hours is $1,683.
The fastest flight from Boston to Sydney takes 22h 34m
There are no direct flights from Boston to Sydney. Popular non-direct route for this connection is Boston Logan Intl Airport - Sydney Kingsford Smith Airport.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

  • 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 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 refresh daily.

  • How many operators does momondo search 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?

    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?


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
Air CanadaPriceFrom $1,536Free cancellationRating
7.0
8,635 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,564Free cancellationRating
7.4
8,985 reviews
Search United Airlines flights
Qantas AirwaysPriceFrom $2,163Free cancellationRating
7.5
824 reviews
Search Qantas Airways flights

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Terrigal
Lithgow
Penrith
Leura
Manly
Cronulla
Coogee
Randwick
Bondi Beach
Charlestown
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.


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