Find flights
When to book
Airlines
FAQs

Cheap flights from Boston to Sydney, NS from C$ 409

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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YQY
3 Aug — 10 Aug1
1 adult

Cheap flight deals from Boston to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Sydney (YQY). 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 29 July 2025.

Round-trip from

C$ 785

One-way from

C$ 409
Air Canada
  • Air Canada
  • 4/10-12/10
  • 2 total stops
  • 10h 08m total
  • Boston to Sydney
Search Deals
11/9
  • 11/9
  • 3 total stops
  • 9h 45m total
  • Boston to Sydney
Search Deals

Find flight deals from Boston to Sydney

Cheapest flights from Boston to Sydney
Explore the most affordable flight options available from Boston to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.

Sat 4/1010:20 a.m.BOS - YQY
1 stop4h 28mAir Canada
Sun 12/105:15 a.m.YQY - BOS
1 stop5h 40mAir Canada
Deal found 29/7C$ 785
Fri 12/97:00 p.m.BOS - YQY
2 stops22h 51mWestJet
Sat 20/97:40 p.m.YQY - BOS
2 stops23h 30mWestJet
Deal found 27/7C$ 809
Thu 11/98:45 a.m.BOS - YQY
2 stops24h 45mMultiple Airlines
Sat 13/97:40 p.m.YQY - BOS
2 stops23h 18mMultiple Airlines
Deal found 27/7C$ 956

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Sydney 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 629,999 searches. Data last updated 29 July 2025.
Use the filters below to find and compare flights from Boston to Sydney that are best for you.

Fly from

Boston

Fly to

Sydney

Route

Depart

Return

Price

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Sat 4/10

10:20 a.m.-3:48 p.m.

1 stop4h 28m

Sydney

Sun 12/10

5:15 a.m.-9:55 a.m.

1 stop5h 40m

C$ 785

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Fri 12/9

7:00 p.m.-6:51 p.m.

2 stops22h 51m

Sydney

Sat 20/9

7:40 p.m.-6:10 p.m.

2 stops23h 30m

C$ 809

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Thu 11/9

8:45 a.m.-10:30 a.m.

2 stops24h 45m

Sydney

Sat 13/9

7:40 p.m.-5:58 p.m.

2 stops23h 18m

C$ 956

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Thu 11/9

8:45 a.m.-7:30 p.m.

3 stops9h 45m

C$ 409

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Thu 11/9

4:45 p.m.-12:09 a.m.

1 stop6h 24m

C$ 503

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/7

Best time to book a flight from Boston to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Boston 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.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. 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 Sydney. Reviews last updated 29 July 2025.
Read through reviews of airlines operating flights from Boston to Sydney, such as WestJet and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
WestJet
7.2
Good
2,973 reviews
Check prices

Food

6.2

Crew

7.9

Boarding

7.4

Overall

7.2

Entertainment

6.1

Comfort

7.0

Reviews

1 / 20
6.0
Good

Roger,Jun 2025

MSP - YXE

Everything was good except the actual equipment. The aircraft was old and definitely showed its age, as far the interior cabin was concerned. WestJet definitely needs tio update the interior.
WestJet
7.2
Good
2,973 reviews
WestJet
7.2
Good
2,973 reviews
Check prices

Food

6.2

Crew

7.9

Boarding

7.4

Overall

7.2

Entertainment

6.1

Comfort

7.0

Reviews

1 / 20
6.0
Good

Roger,Jun 2025

MSP - YXE

Everything was good except the actual equipment. The aircraft was old and definitely showed its age, as far the interior cabin was concerned. WestJet definitely needs tio update the interior.
Air Canada
7.1
Good
9,822 reviews
WestJet
7.2
Good
2,973 reviews
Check prices

Food

6.2

Crew

7.9

Boarding

7.4

Overall

7.2

Entertainment

6.1

Comfort

7.0

Reviews

1 / 20
6.0
Good

Roger,Jun 2025

MSP - YXE

Everything was good except the actual equipment. The aircraft was old and definitely showed its age, as far the interior cabin was concerned. WestJet definitely needs tio update the interior.

Related info for your journey

Find useful and relevant information for your journey from Boston to Sydney. 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 Boston to Sydney, Nova Scotia round-trip?

    Our cheapest airline available from Boston to Sydney, Nova Scotia is Air Canada. Our recent data shows that you can find tickets from as low as C$ 785 on this airline. An additional option worth looking into is WestJet, starting at C$ 809.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston to Sydney 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 Boston to Sydney, Nova Scotia?

    Currently, January is the cheapest month in which you can book a flight from Boston to Sydney, Nova Scotia (average of C$ 375). Flying from Boston to Sydney, Nova Scotia in December is currently the most expensive (average of C$ 682). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Boston to Sydney?

When you search for this flight from Boston to Sydney, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Boston to Sydney?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Boston to Sydney.

Can Cheapflights find flights from Boston to Sydney with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Boston to Sydney flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Boston to Sydney become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from Boston today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.