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$491+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — BOS
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheapflights Tip: The best prices from Sydney Kingsford Smith to Boston Logan Intl are usually found in February or March, 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 July 30, 2025.

Round-trip from

$888
(TeaFlight)

One-way from

$491
(Flightnetwork)

Popular in

December

Cheapest in

February

Average price

$1,325
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. 8% potential increase in price ($133 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 30, 2025.

This TeaFlight deal was found by Cheapflights users on 7/29. 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 TeaFlight is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1210:20 amSYD - BOS
1 stop27h 19mAir Canada
Sun 10/1910:20 amBOS - SYD
2 stops31h 00mAir Canada
Deal found 7/29$888
This Air Canada deal was found by Cheapflights users on 7/30. 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 10/1910:20 amSYD - BOS
3 stops38h 10mMultiple Airlines
Mon 11/103:15 pmBOS - SYD
2 stops26h 20mMultiple Airlines
Deal found 7/30$913
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Tue 8/59:10 amSYD - BOS
2 stops27h 51mAmerican Airlines
Fri 8/86:07 pmBOS - SYD
1 stop22h 58mAmerican Airlines
Deal found 7/30$922
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Fri 10/1711:20 amSYD - BOS
1 stop24h 12mUnited Airlines
Wed 10/227:30 amBOS - SYD
1 stop33h 30mUnited Airlines
Deal found 7/30$939
This Delta deal was found by Cheapflights users on 7/28. 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.
Tue 7/299:25 amSYD - BOS
1 stop24h 40mDelta
Sun 8/36:20 amBOS - SYD
1 stop34h 15mDelta
Deal found 7/28$958
This Virgin Australia deal was found by Cheapflights users on 7/30. 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 Virgin Australia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/410:20 amSYD - BOS
1 stop33h 54mVirgin Australia
Tue 8/197:30 amBOS - SYD
1 stop33h 30mVirgin Australia
Deal found 7/30$1,030

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 July 30, 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

Sun 10/12

10:20 am-10:39 pm

1 stop27h 19m

Boston Logan Intl

Sun 10/19

10:20 am-8:20 am

2 stops31h 00m

$888

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Sun 10/19

10:20 am-9:30 am

3 stops38h 10m

Boston Logan Intl

Mon 11/10

3:15 pm-9:35 am

2 stops26h 20m

$913

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Tue 8/5

9:10 am-11:01 pm

2 stops27h 51m

Boston Logan Intl

Fri 8/8

6:07 pm-7:05 am

1 stop22h 58m

$922

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Fri 10/17

11:20 am-8:32 pm

1 stop24h 12m

Boston Logan Intl

Wed 10/22

7:30 am-8:00 am

1 stop33h 30m

$939

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Tue 8/5

9:25 am-8:05 pm

1 stop24h 40m

Boston Logan Intl

Fri 8/22

6:15 am-6:35 am

1 stop34h 20m

$958

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Mon 8/4

9:30 am-7:33 am

1 stop36h 03m

Boston Logan Intl

Sat 8/16

6:00 am-6:55 am

1 stop34h 55m

$1,030

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Thu 9/11

9:20 am-9:55 pm

2 stops26h 35m

$491

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Wed 8/13

10:20 am-6:14 am

1 stop33h 54m

$499

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Thu 9/25

9:25 am-11:53 pm

1 stop28h 28m

$509

SydneyBoston

SYD - BOS

SYDBOS

Sydney Kingsford Smith

Mon 9/15

10:10 am-12:27 am

3 stops52h 17m

$2,552

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 13 results
1
2

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 July 25, 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 July 30, 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 July 30, 2025.
Read reviews from past customers who have flown Korean Air, Alaska Airlines, and Delta 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.
Korean Air
8.4
Very good
1,121 reviews

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.2

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Korean Air
8.4
Very good
1,121 reviews
Korean Air
8.4
Very good
1,121 reviews

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.2

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Alaska Airlines
8.0
Very good
10,000 reviews
Korean Air
8.4
Very good
1,121 reviews

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.2

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Delta
8.0
Very good
7,980 reviews
Korean Air
8.4
Very good
1,121 reviews

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.2

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Cathay Pacific
7.6
Good
949 reviews
Korean Air
8.4
Very good
1,121 reviews

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.2

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Virgin Australia
7.5
Good
411 reviews
Korean Air
8.4
Very good
1,121 reviews

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.2

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

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.

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

    Currently priced at $888, Air Canada will fly you from Sydney to Boston and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Delta - these airlines can fly you to your destination from $939 and $959, respectively. Air Canada is priced at 34% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Sydney to Boston one-way?

    For one-way options, check prices for Air Canada. According to our data, you can fly for as low as $491. Users have also found prices from $499 and $501 on United Airlines and Delta, respectively.

  • 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
Watertown
Seabrook
Waltham
Framingham
Lowell
Randolph
Smithfield
Cranston
Chestnut Hill
Warwick
Peabody
Quincy
York Beach
Chelsea
Saco
Hampton Beach
Swansea
Lincoln

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
Coolangatta to Boston flights
Albury to Boston flights

Top 5 airlines flying from Sydney to Boston

Discover the top 5 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$842Average$1,471FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$895Average$1,414FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,081Average$1,271FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$1,102Average$1,373FlexibilityNo cancel feeOn-time74%
Virgin AustraliaCheapest$1,280Average$1,575FlexibilityNo cancel feeOn-time80%

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