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Cheap flights from Sydney to Boston from $617

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to Boston departing on 9/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Sydney to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
11:20 am - 10:37 pmSYD  Sydney Kingsford Smith-BOS Boston Logan Intl
27h 17m2 stops Vancouver Intl Toronto Pearson Intl
Air Canada Logo
10:35 am - 6:55 amBOS  Boston Logan Intl-SYD Sydney Kingsford Smith
28h 20m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
$951Air Canada
Mon, Nov 30 - Tue, Dec 15
Air Canada Logo
11:20 am - 7:02 pmSYD  Sydney Kingsford Smith-BOS Boston Logan Intl
47h 42m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
6:35 pm - 6:55 amBOS  Boston Logan Intl-SYD Sydney Kingsford Smith
44h 20m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
$955Air Canada
Tue, Dec 1 - Wed, Dec 16
Air Canada Logo
9:20 am - 6:04 pmSYD  Sydney Kingsford Smith-BOS Boston Logan Intl
46h 44m2 stops Vancouver Intl Toronto Pearson Intl
Air Canada Logo
10:50 am - 7:20 amBOS  Boston Logan Intl-SYD Sydney Kingsford Smith
30h 30m2 stops Toronto Pearson Intl Vancouver Intl
$976Air Canada
Mon, Sep 21 - Mon, Sep 28
United Airlines Logo
10:20 am - 5:07 pmSYD  Sydney Kingsford Smith-BOS Boston Logan Intl
20h 47m1 stop San Francisco
United Airlines Logo
7:23 pm - 6:55 amBOS  Boston Logan Intl-SYD Sydney Kingsford Smith
45h 32m2 stops Washington, D.C. Dulles Intl San Francisco
$1,018United Airlines
Thu, Aug 27 - Sat, Sep 5
United Airlines Logo
10:20 am - 7:10 pmSYD  Sydney Kingsford Smith-BOS Boston Logan Intl
22h 50m1 stop San Francisco
United Airlines Logo
5:38 pm - 7:00 amBOS  Boston Logan Intl-SYD Sydney Kingsford Smith
47h 22m2 stops Houston George Bush Intcntl Los Angeles
$1,125United Airlines
Sun, Aug 30 - Sat, Sep 5
United Airlines Logo
10:20 am - 7:10 pmSYD  Sydney Kingsford Smith-BOS Boston Logan Intl
22h 50m1 stop San Francisco
United Airlines Logo
5:38 pm - 7:00 amBOS  Boston Logan Intl-SYD Sydney Kingsford Smith
47h 22m2 stops Houston George Bush Intcntl Los Angeles
$1,125United Airlines
Sun, Aug 30 - Sat, Sep 5
Qantas Airways Logo
9:10 am - 11:28 pmSYD  Sydney Kingsford Smith-BOS Boston Logan Intl
28h 18m1 stop Los Angeles
Qantas Airways Logo
4:35 pm - 7:05 amBOS  Boston Logan Intl-SYD Sydney Kingsford Smith
24h 30m1 stop Los Angeles
$1,136Qantas Airways
Thu, Sep 17 - Thu, Sep 24
Delta Logo
9:15 am - 7:25 pmSYD  Sydney Kingsford Smith-BOS Boston Logan Intl
24h 10m1 stop Los Angeles
Delta Logo
1:32 pm - 6:50 amBOS  Boston Logan Intl-SYD Sydney Kingsford Smith
27h 18m2 stops New York John F Kennedy Intl Los Angeles
$1,136Delta
Tue, Sep 22 - Wed, Sep 30
Delta Logo
9:15 am - 11:51 pmSYD  Sydney Kingsford Smith-BOS Boston Logan Intl
28h 36m1 stop Los Angeles
Delta Logo
6:20 am - 6:50 amBOS  Boston Logan Intl-SYD Sydney Kingsford Smith
34h 30m1 stop Los Angeles
$1,136Delta
Tue, Sep 22 - Wed, Sep 30
Qantas Airways Logo
9:10 am - 11:28 pmSYD  Sydney Kingsford Smith-BOS Boston Logan Intl
28h 18m1 stop Los Angeles
Qantas Airways Logo
5:45 pm - 8:05 amBOS  Boston Logan Intl-SYD Sydney Kingsford Smith
23h 20m1 stop Los Angeles
$1,138Qantas Airways
Thu, Oct 1 - Thu, Oct 15

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Air Canada flights from Sydney to Boston

Our best Air Canada deals on Sydney to Boston flight tickets
Air Canada
Nov 30
SYD11:20 amSydney Kingsford Smith
27h 17m
2 stops
BOS10:37 pmBoston Logan Intl
Dec 15
BOS10:35 amBoston Logan Intl
28h 20m
2 stops
SYD6:55 amSydney Kingsford Smith
$951
Air Canada
Dec 1
SYD11:20 amSydney Kingsford Smith
47h 42m
2 stops
BOS7:02 pmBoston Logan Intl
Dec 16
BOS6:35 pmBoston Logan Intl
44h 20m
2 stops
SYD6:55 amSydney Kingsford Smith
$955
Air Canada
Sep 21
SYD9:20 amSydney Kingsford Smith
46h 44m
2 stops
BOS6:04 pmBoston Logan Intl
Sep 28
BOS10:50 amBoston Logan Intl
30h 30m
2 stops
SYD7:20 amSydney Kingsford Smith
$976

Delta flights from Sydney to Boston

Our best Delta deals on Sydney to Boston flight tickets
Delta
Sep 22
SYD9:15 amSydney Kingsford Smith
24h 10m
1 stop
BOS7:25 pmBoston Logan Intl
Sep 30
BOS1:32 pmBoston Logan Intl
27h 18m
2 stops
SYD6:50 amSydney Kingsford Smith
$1,136
Delta
Sep 17
SYD9:15 amSydney Kingsford Smith
28h 36m
1 stop
BOS11:51 pmBoston Logan Intl
Sep 24
BOS4:30 pmBoston Logan Intl
24h 20m
1 stop
SYD6:50 amSydney Kingsford Smith
$1,189
Delta
Aug 8
SYD9:15 amSydney Kingsford Smith
34h 15m
1 stop
BOS5:30 amBoston Logan Intl
Aug 22
BOS10:50 amBoston Logan Intl
30h 00m
1 stop
SYD6:50 amSydney Kingsford Smith
$1,241

momondo Fare Finder

 
Customize your flight search to find flights from Sydney to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 8, 2026.
Use the filters below to find and compare flights from Sydney to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SydneyBoston

SYD Sydney Kingsford Smith - BOS Boston Logan Intl

SYDBOS

Sydney Kingsford Smith

Mon 11/30

11:20 am-10:37 pm

2 stops27h 17m

Boston Logan Intl

Tue 12/15

10:35 am-6:55 am

2 stops28h 20m

$951

SydneyBoston

SYD Sydney Kingsford Smith - BOS Boston Logan Intl

SYDBOS

Sydney Kingsford Smith

Tue 12/1

11:20 am-7:02 pm

2 stops47h 42m

Boston Logan Intl

Wed 12/16

6:35 pm-6:55 am

2 stops44h 20m

$955

SydneyBoston

SYD Sydney Kingsford Smith - BOS Boston Logan Intl

SYDBOS

Sydney Kingsford Smith

Mon 9/21

9:20 am-6:04 pm

2 stops46h 44m

Boston Logan Intl

Mon 9/28

10:50 am-7:20 am

2 stops30h 30m

$976

SydneyBoston

SYD Sydney Kingsford Smith - BOS Boston Logan Intl

SYDBOS

Sydney Kingsford Smith

Thu 8/27

10:20 am-5:07 pm

1 stop20h 47m

Boston Logan Intl

Sat 9/5

7:23 pm-6:55 am

2 stops45h 32m

$1,018

SydneyBoston

SYD Sydney Kingsford Smith - BOS Boston Logan Intl

SYDBOS

Sydney Kingsford Smith

Sun 8/30

10:20 am-7:10 pm

1 stop22h 50m

Boston Logan Intl

Sat 9/5

5:38 pm-7:00 am

2 stops47h 22m

$1,125

SydneyBoston

SYD Sydney Kingsford Smith - BOS Boston Logan Intl

SYDBOS

Sydney Kingsford Smith

Sun 8/30

10:20 am-7:10 pm

1 stop22h 50m

Boston Logan Intl

Sat 9/5

5:38 pm-7:00 am

2 stops47h 22m

$1,125

SydneyBoston

SYD Sydney Kingsford Smith - BOS Boston Logan Intl

SYDBOS

Sydney Kingsford Smith

Thu 9/17

9:10 am-11:28 pm

1 stop28h 18m

Boston Logan Intl

Thu 9/24

4:35 pm-7:05 am

1 stop24h 30m

$1,136
Quickest round-trip

SydneyBoston

SYD Sydney Kingsford Smith - BOS Boston Logan Intl

SYDBOS

Sydney Kingsford Smith

Tue 9/22

9:15 am-7:25 pm

1 stop24h 10m

Boston Logan Intl

Wed 9/30

1:32 pm-6:50 am

2 stops27h 18m

$1,136

SydneyBoston

SYD Sydney Kingsford Smith - BOS Boston Logan Intl

SYDBOS

Sydney Kingsford Smith

Tue 9/22

9:15 am-11:51 pm

1 stop28h 36m

Boston Logan Intl

Wed 9/30

6:20 am-6:50 am

1 stop34h 30m

$1,136

SydneyBoston

SYD Sydney Kingsford Smith - BOS Boston Logan Intl

SYDBOS

Sydney Kingsford Smith

Thu 10/1

9:10 am-11:28 pm

1 stop28h 18m

Boston Logan Intl

Thu 10/15

5:45 pm-8:05 am

1 stop23h 20m

$1,138

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Boston from

How to get the cheapest flight ticket from Sydney to Boston

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 Sydney and Boston?

Prices are currently typical for flights on this route.

Typical prices usually range from $905 to $1,283.
The lowest price recently found on this route was $951.

What is the cheapest month to fly to Boston?

In general, January is the cheapest month to fly from Sydney to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $838. If you aren’t able to travel during the month of January, then book flights to Boston from Sydney during October instead. Flights to Boston in October, while not as cheap as those in January, still average around $840.

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

You are more likely to see cheaper flights to Boston from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $1,183 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Sydney for as low as $975 on momondo.

Can stopping save me money on Sydney to Boston flights?

You could potentially save up to 26% on your flight if you consider stops on a Sydney to Boston flight.

How have Sydney to Boston flight prices changed over time?

As of August 2026, prices for Sydney to Boston flights are approximately 32% cheaper when compared to flights at the same time last year.

When to book flights from Sydney to Boston

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

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

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

Fastest flight time

21h 18m

Direct flights

None
The fastest flight from Sydney to Boston takes 21h 18m
There are no direct flights from Sydney to Boston. There are no popular flight routes from Sydney to Boston.
Search flight deals

Frequently asked questions about flying from Sydney to Boston

  • How far is Sydney Kingsford Smith to Boston Logan Intl by plane?

    The distance between Sydney Kingsford Smith and Boston Logan Intl is about 10084.4 mi. Flights usually cover this in 21h 18m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Sydney Kingsford Smith Airport to Boston Logan Intl Airport are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Sydney Kingsford Smith Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The travel and health documents you'll need for your trip to Boston Logan Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Boston Logan Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Sydney to Boston?

Best airlines flying from Sydney to Boston

Compare and see reviews for airlines that fly from Sydney to Boston with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $829Free CancellationRating
7.4
10,086 reviews
Search United Airlines flights
DeltaPriceFrom $839Free CancellationRating
7.8
8,505 reviews
Search Delta flights
Qantas AirwaysPriceFrom $900Free CancellationRating
7.5
1,079 reviews
Search Qantas Airways flights

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Ogunquit
Salem
Old Orchard Beach
Hampton
Laconia
Cambridge
South Yarmouth
Plymouth
Revere
Kennebunkport
York Beach
Gloucester
Warwick
Middletown
South Portland
Everett
Brockton
Falmouth
Seekonk

Why use momondo?

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

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 Sydney to Boston for you.

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

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

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

Once you have performed a search for Sydney to Boston 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 Sydney to Boston right now. Can momondo alert me if prices change?

Price alerts on flights to Boston from Sydney are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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