$661 Cheap Flights from Sydney (SYD) to Boston (BOS)

View $661 flight on Sun, Jun 22, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Sydney to Boston (SYD-BOS)

Prices were available within the past 7 days and start at $661 for one-way flights and $1,263 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Jun 16 - Mon, Jul 7
SYD
Sydney
BOS
Boston
$1,263 Roundtrip, found 4 hours ago
$1,263
Roundtrip
found 4 hours ago
Select United flight, departing Mon, Jun 16 from Sydney to Boston, returning Mon, Jul 7, priced at $1,263 found 4 hours ago
Delta
Tue, Jun 17 - Wed, Jul 9
SYD
Sydney
BOS
Boston
$1,272 Roundtrip, found 4 hours ago
$1,272
Roundtrip
found 4 hours ago
Select Delta flight, departing Tue, Jun 17 from Sydney to Boston, returning Wed, Jul 9, priced at $1,272 found 4 hours ago
Air Canada
Wed, Oct 1 - Wed, Oct 22
SYD
Sydney
BOS
Boston
$1,330 Roundtrip, found 1 day ago
$1,330
Roundtrip
found 1 day ago
Select Air Canada flight, departing Wed, Oct 1 from Sydney to Boston, returning Wed, Oct 22, priced at $1,330 found 1 day ago
Japan Airlines
Sat, Jun 7 - Sun, Jun 22
SYD
Sydney
BOS
Boston
$1,342 Roundtrip, found 16 hours ago
$1,342
Roundtrip
found 16 hours ago
Select Japan Airlines flight, departing Sat, Jun 7 from Sydney to Boston, returning Sun, Jun 22, priced at $1,342 found 16 hours ago
Korean Air
Tue, Feb 10 - Sat, Feb 28
SYD
Sydney
BOS
Boston
$1,373 Roundtrip, found 6 days ago
$1,373
Roundtrip
found 6 days ago
Select Korean Air flight, departing Tue, Feb 10 from Sydney to Boston, returning Sat, Feb 28, priced at $1,373 found 6 days ago
Hawaiian Airlines
Tue, Jun 17 - Wed, Jul 9
SYD
Sydney
BOS
Boston
$1,382 Roundtrip, found 4 hours ago
$1,382
Roundtrip
found 4 hours ago
Select Hawaiian Airlines flight, departing Tue, Jun 17 from Sydney to Boston, returning Wed, Jul 9, priced at $1,382 found 4 hours ago
Cathay Pacific
Thu, May 29 - Sat, Aug 23
SYD
Sydney
BOS
Boston
$1,417 Roundtrip, found 2 days ago
$1,417
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Thu, May 29 from Sydney to Boston, returning Sat, Aug 23, priced at $1,417 found 2 days ago
Alaska Airlines
Fri, Aug 1 - Fri, Aug 15
SYD
Sydney
BOS
Boston
$1,434 Roundtrip, found 10 hours ago
$1,434
Roundtrip
found 10 hours ago
Select Alaska Airlines flight, departing Fri, Aug 1 from Sydney to Boston, returning Fri, Aug 15, priced at $1,434 found 10 hours ago
JetBlue Airways
Mon, Oct 20 - Thu, Oct 30
SYD
Sydney
BOS
Boston
$1,437 Roundtrip, found 6 days ago
$1,437
Roundtrip
found 6 days ago
Select JetBlue Airways flight, departing Mon, Oct 20 from Sydney to Boston, returning Thu, Oct 30, priced at $1,437 found 6 days ago
Turkish Airlines
Fri, May 30 - Fri, Aug 22
SYD
Sydney
BOS
Boston
$1,455 Roundtrip, found 4 days ago
$1,455
Roundtrip
found 4 days ago
Select Turkish Airlines flight, departing Fri, May 30 from Sydney to Boston, returning Fri, Aug 22, priced at $1,455 found 4 days ago
Flights from Sydney (SYD) to Boston (BOS)
Origin airport
Kingsford Smith Intl.
Destination airport
Logan Intl.
Airlines serving
Air Canada, Air New Zealand, Air Tahiti Nui, Alaska Airlines, All Nippon Airways, American Airlines, Cathay Pacific, Delta, Emirates, Etihad Airways, Hawaiian Airlines, Japan Airlines, JetBlue Airways, Korean Air, LATAM Airlines Group, Qantas Airways, Qatar Airways, Turkish Airlines, United
Roundtrip price
$1,263
Distance
10096 mi

Sydney to Boston Flights

The cheapest times to fly from Sydney to Boston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sydney to Boston are during the month of June. You can find some of the cheapest flights from Sydney to Boston with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Sydney to Boston

Sunday is one of the best days to book for cheap flights from Sydney to Boston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Sydney to Boston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sydney to Boston in 2025. You can also book with separate airlines for your outbound and return journeys, from $661 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sydney to Boston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Sydney to Boston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Kingsford Smith Intl. Airport (SYD) to Logan Intl. Airport (BOS) cost?
Discover the latest flight deals from SYD to BOS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SYD to BOS?
The cheapest flights from SYD to BOS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SYD to BOS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from SYD to BOS. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Kingsford Smith Intl. Airport (SYD) to Logan Intl. Airport (BOS)?
There aren’t any daily nonstop flights from Kingsford Smith Intl. Airport (SYD) to Logan Intl. Airport (BOS). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you’ll be cruising above the clouds in no time at all.
What day of the week has the most flights from SYD to BOS?
Typically you’ll find the most flight options available on a Friday. Tuesdays are often the quietest.* However, this can vary based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Kingsford Smith Intl. Airport (SYD) to Logan Intl. Airport (BOS)?
To avoid possible delays on the Kingsford Smith Intl. Airport (SYD) to Logan Intl. Airport (BOS) route, travel before 3 PM. Flights after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Kingsford Smith Intl. Airport (SYD) to Logan Intl. Airport (BOS) last-minute?
Holding off until right before your break to book a flight from SYD to BOS generally means paying more. Although you may find some last-minute discounts, they aren’t always guaranteed. Be flexible with your itinerary to boost your chances of scoring a bargain.
Is it cheaper to book a SYD to BOS flight and hotel package?
Compared with arranging hotels and flights separately, booking a SYD to BOS flight and hotel package with Expedia could lead to significant savings. What’s more, having everything in one easy place takes the hassle out of planning your trip. Just secure your flights and choose from our extensive range of hotels, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Kingsford Smith Intl. Airport (SYD) to Logan Intl. Airport (BOS)?
If you booked your SYD to BOS flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you’d like more information.

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*Available to One Key members.