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Cheap flights from Boston to Sydney, NS from C$ 492

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 30/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YQY
14 Jul — 21 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to Sydney

Enter your travel dates to find the best prices.

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 14 June 2026.

Wed 14/1010:40 a.m.
BOS
-
YQY
1 stop4h 58m
Air Canada
Sat 17/105:20 p.m.
YQY
-
BOS
1 stop5h 06m
Air Canada
Deal found 9/6C$ 1,006
Sat 11/710:40 a.m.
BOS
-
YQY
1 stop4h 34m
Air Canada
Thu 16/75:10 p.m.
YQY
-
BOS
1 stop5h 17m
Air Canada
Deal found 12/6C$ 1,053
Sat 11/74:55 p.m.
BOS
-
YQY
1 stop6h 12m
Air Canada
Sat 18/75:10 p.m.
YQY
-
BOS
1 stop5h 17m
Air Canada
Deal found 13/6C$ 1,060
Mon 17/84:55 p.m.
BOS
-
YQY
1 stop6h 17m
Air Canada
Sun 23/85:05 a.m.
YQY
-
BOS
1 stop5h 48m
Air Canada
Deal found 11/6C$ 1,067
Fri 10/77:35 p.m.
BOS
-
YQY
2 stops19h 39m
Air Canada
Tue 14/75:10 p.m.
YQY
-
BOS
1 stop5h 17m
Air Canada
Deal found 13/6C$ 1,085
Fri 10/75:45 a.m.
BOS
-
YQY
1 stop9h 29m
Air Canada
Thu 16/75:10 p.m.
YQY
-
BOS
1 stop5h 17m
Air Canada
Deal found 11/6C$ 1,095
Sat 1/810:40 a.m.
BOS
-
YQY
2 stops12h 32m
Air Canada
Wed 5/85:05 a.m.
YQY
-
BOS
2 stops10h 36m
Air Canada
Deal found 10/6C$ 1,115

Find 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 14 June 2026.

Round-trip from

C$ 1,006

One-way from

C$ 492
Air Canada
  • Air Canada
  • 14/10-17/10
  • 2 total stops
  • 10h 04m total
  • Boston to Sydney
Search Deals
Air Canada
  • Air Canada
  • 28/7
  • 1 total stop
  • 4h 34m total
  • Boston to Sydney
Search Deals

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 14 June 2026.
Use the filters below to find and compare flights from Boston to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Wed 14/10

10:40 a.m.-4:38 p.m.

1 stop4h 58m

Sydney

Sat 17/10

5:20 p.m.-9:26 p.m.

1 stop5h 06m

C$ 1,006

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Wed 2/12

3:20 p.m.-10:31 p.m.

1 stop6h 11m

Sydney

Sat 5/12

5:45 a.m.-1:55 p.m.

2 stops9h 10m

C$ 1,006

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Sat 19/9

10:40 a.m.-4:38 p.m.

1 stop4h 58m

Sydney

Tue 22/9

5:20 p.m.-9:26 p.m.

1 stop5h 06m

C$ 1,006

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Fri 11/12

10:40 a.m.-10:31 p.m.

2 stops10h 51m

Sydney

Sat 19/12

5:45 a.m.-1:55 p.m.

2 stops9h 10m

C$ 1,017
Cheapest one-way
Quickest one-way

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Thu 30/7

10:40 a.m.-4:14 p.m.

1 stop4h 34m

C$ 492

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Wed 5/8

4:55 p.m.-12:12 a.m.

1 stop6h 17m

C$ 499

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Tue 28/7

6:00 a.m.-4:14 p.m.

2 stops9h 14m

C$ 504

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Wed 29/7

10:40 a.m.-12:07 a.m.

2 stops12h 27m

C$ 523

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

Sorted by cheapest first

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.

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.

  • How long is the flight from Boston to Sydney, Nova Scotia?

    A quick flight from Boston to Sydney, Nova Scotia can take about 4h 58m. Air Canada provides one of the quickest options available for as low as C$ 1,006. There are 967 km between Boston and Sydney, Nova Scotia.

  • 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.

See more FAQs

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Inverness

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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.

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