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$462+ Cheap flights from Sydney (SYD) to Boston (BOS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — BOS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Find cheap flights from Sydney to Boston with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Sydney Kingsford Smith to Boston Logan Intl are usually found in October or August, booked 32 days in advance, depart on a Thursday or Sunday and return on a Wednesday

Cheap flight deals from Sydney to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$829
(American Airlines)

One-way from

$462
(BYOjet)

Popular in

December

Cheapest in

October

Average price

$1,273
From Sydney Kingsford Smith to Boston Logan Intl
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One-way flight from Sydney Kingsford Smith to Boston Logan Intl
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Highest demand for flights based on searches. 9% potential increase in price ($142 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Sydney to Boston

Cheapest flights from Sydney to Boston
Explore the most affordable flight options available from Sydney to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1510:10 amSYD - BOS
2 stops24h 53mAmerican Airlines
Wed 10/298:01 amBOS - SYD
1 stop33h 59mAmerican Airlines
Deal found 9/11$829
This Air Canada deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/510:20 amSYD - BOS
2 stops46h 18mAir Canada
Sat 10/1810:20 amBOS - SYD
2 stops55h 00mAir Canada
Deal found 9/10$833
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2611:20 amSYD - BOS
1 stop26h 13mAmerican Airlines
Sun 11/212:00 pmBOS - SYD
1 stop29h 00mAmerican Airlines
Deal found 9/11$837
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/129:10 amSYD - BOS
2 stops23h 39mAmerican Airlines
Thu 9/258:00 amBOS - SYD
1 stop33h 05mAmerican Airlines
Deal found 9/11$839
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1110:25 amSYD - BOS
1 stop24h 50mDelta
Mon 10/208:55 pmBOS - SYD
1 stop43h 40mDelta
Deal found 9/9$842
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1610:25 amSYD - BOS
1 stop28h 19mDelta
Thu 10/304:40 pmBOS - SYD
1 stop23h 50mDelta
Deal found 9/9$843
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2310:40 amSYD - BOS
2 stops25h 03mDelta
Thu 12/411:10 amBOS - SYD
2 stops29h 20mDelta
Deal found 9/10$845
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/410:20 amSYD - BOS
1 stop33h 47mUnited Airlines
Sun 11/25:57 pmBOS - SYD
1 stop23h 18mUnited Airlines
Deal found 9/11$846
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1611:50 amSYD - BOS
2 stops27h 51mUnited Airlines
Thu 1/16:14 pmBOS - SYD
1 stop22h 51mUnited Airlines
Deal found 9/9$854
This Booking.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/910:20 amSYD - BOS
2 stops40h 09mAir Canada
Thu 10/1610:20 amBOS - SYD
2 stops55h 00mAir Canada
Deal found 9/11$862

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Sydney to Boston that are best for you.

Fly from

Sydney

Fly to

Boston

Route

Depart

Return

Price

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Sat 10/11

10:25 am-8:15 pm

1 stop24h 50m

Boston Logan Intl

Mon 10/20

8:55 pm-7:35 am

1 stop43h 40m

$842

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Mon 10/13

10:25 am-7:30 pm

2 stops24h 05m

Boston Logan Intl

Mon 10/20

9:10 pm-7:35 am

2 stops43h 25m

$843

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Tue 10/14

10:25 am-7:00 pm

2 stops23h 35m

Boston Logan Intl

Mon 10/20

9:10 pm-7:35 am

2 stops43h 25m

$843

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Tue 12/16

11:20 am-11:41 pm

2 stops28h 21m

Boston Logan Intl

Fri 1/9

5:57 pm-6:20 am

1 stop44h 23m

$845

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Fri 11/28

11:50 am-9:35 pm

1 stop25h 45m

Boston Logan Intl

Thu 12/4

5:58 pm-6:20 am

1 stop44h 22m

$845

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Sun 11/23

11:20 am-4:50 pm

1 stop21h 30m

Boston Logan Intl

Wed 12/3

3:32 pm-9:05 am

2 stops25h 33m

$845

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Sun 11/23

11:50 am-5:43 pm

1 stop21h 53m

Boston Logan Intl

Fri 12/5

6:13 pm-9:05 am

1 stop22h 52m

$845

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Tue 11/25

10:40 am-7:20 pm

2 stops24h 40m

Boston Logan Intl

Thu 12/4

1:05 pm-8:30 am

2 stops27h 25m

$845

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Mon 11/24

11:50 am-9:34 pm

2 stops25h 44m

Boston Logan Intl

Fri 12/5

5:58 pm-9:15 am

1 stop23h 17m

$845

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Mon 11/24

10:40 am-7:20 pm

2 stops24h 40m

Boston Logan Intl

Fri 12/5

11:43 am-8:30 am

2 stops28h 47m

$845

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 22 results
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Best time to book a flight from Sydney to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Sydney with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sydney to Boston

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

Use this chart to determine the optimal time to book a round-trip flight from Sydney to Boston. Price data was last updated on August 29, 2025.

Booking 32 days in advance of your planned departure date is, on average, the best time to get cheap flights from Sydney to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Sydney to Boston?

Currently, January is the cheapest month in which you can book a flight from Sydney to Boston (average of $218). Flying from Sydney to Boston in July is currently the most expensive (average of $311). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SYD to BOS?

Find hourly flight availability from Sydney to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Sydney to Boston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 22% versus a flight at noon.

How much does it cost to fly round-trip from Sydney to Boston?

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated September 11, 2025.
Read reviews from past customers who have flown Delta, Virgin Australia, and Qantas Airways from Sydney to Boston. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Virgin Australia
7.6
Good
416 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Qantas Airways
7.5
Good
905 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Related info for your journey

Find useful and relevant information for your journey from Sydney to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Sydney to Boston?

    For as low as $842, Delta can have you in Boston from Sydney in 24h 50m. Sydney and Boston are separated by a distance of 10091 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Sydney to Boston round-trip?

    Currently priced at $829, United Airlines will fly you from Sydney to Boston and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Qantas Airways - these airlines can fly you to your destination from $842 and $1,102, respectively. United Airlines is priced at 37% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Sydney to Boston that include hotel bookings?

    Yes. In addition to deals on Sydney to Boston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sydney to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sydney to Boston.

  • Can I find deals for business class flights from Sydney to Boston?

    Yes. Cheapflights offers flight deals from Sydney to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sydney to Boston?

    Currently, January is the cheapest month in which you can book a flight from Sydney to Boston (average of $218). Flying from Sydney to Boston in July is currently the most expensive (average of $311). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Cambridge
Medford
Hampton Beach
Watertown
Seabrook
Seekonk
Lincoln
Lowell
Smithfield
Cranston
Chestnut Hill
Chelsea
Warwick
Peabody
Quincy
York Beach
Swansea
Waltham
Saugus
Burlington

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Sydney to Boston

See prices for flight routes from nearby airports that may be better suited for you.
Sydney to Hartford flights
Albury to Boston flights
Coolangatta to Boston flights

Top 4 airlines flying from Sydney to Boston

Discover the top 4 airlines that operate flights from Sydney to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$829Average$1,379FlexibilityNo cancel feeOn-time69%
DeltaCheapest$842Average$1,471FlexibilityNo cancel feeOn-timeN/A
Qantas AirwaysCheapest$1,102Average$1,373FlexibilityNo cancel feeOn-time74%
Virgin AustraliaCheapest$1,504Average$1,644FlexibilityNo cancel feeOn-time80%

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