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Cheap flights from Boston to Sydney, NS from C$ 847

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YQY
9 abr. — 16 abr.1
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 10 marzo 2026.

mar. 26/510:45 a.m.
BOS
-
YQY
1 stop12h 29m
Air Canada
mié. 27/55:20 p.m.
YQY
-
BOS
1 stop5h 07m
Air Canada
Deal found 5/3C$ 847
jue. 23/43:35 p.m.
BOS
-
YQY
1 stop6h 49m
Air Canada
mié. 29/45:30 a.m.
YQY
-
BOS
1 stop5h 19m
Air Canada
Deal found 6/3C$ 874
mar. 2/610:35 a.m.
BOS
-
YQY
1 stop5h 04m
Air Canada
dom. 28/65:00 a.m.
YQY
-
BOS
1 stop7h 52m
Air Canada
Deal found 8/3C$ 881
mié. 22/410:45 a.m.
BOS
-
YQY
2 stops11h 39m
Air Canada
sáb. 2/55:20 p.m.
YQY
-
BOS
1 stop5h 07m
Air Canada
Deal found 8/3C$ 885
lun. 1/65:00 p.m.
BOS
-
YQY
1 stop6h 14m
Air Canada
mar. 30/65:00 a.m.
YQY
-
BOS
1 stop5h 53m
Air Canada
Deal found 8/3C$ 888
mar. 2/65:10 a.m.
BOS
-
YQY
2 stops10h 29m
Air Canada
mar. 30/65:00 a.m.
YQY
-
BOS
1 stop5h 53m
Air Canada
Deal found 8/3C$ 892
jue. 7/510:35 a.m.
BOS
-
YQY
1 stop5h 04m
Air Canada
dom. 10/55:00 a.m.
YQY
-
BOS
1 stop5h 54m
Air Canada
Deal found 10/3C$ 895
vie. 24/410:45 a.m.
BOS
-
YQY
2 stops11h 39m
Air Canada
vie. 1/55:20 p.m.
YQY
-
BOS
1 stop5h 07m
Air Canada
Deal found 10/3C$ 900
mié. 17/65:00 p.m.
BOS
-
YQY
1 stop6h 09m
Air Canada
dom. 21/65:00 a.m.
YQY
-
BOS
1 stop5h 53m
Air Canada
Deal found 9/3C$ 902
jue. 2/710:40 a.m.
BOS
-
YQY
1 stop4h 59m
Air Canada
mar. 28/75:20 p.m.
YQY
-
BOS
2 stops16h 24m
Air Canada
Deal found 8/3C$ 907

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 10 marzo 2026.

Round-trip from

C$ 847

Popular in

October

Cheapest in

May

Average price

C$ 1,078
Air Canada
  • Air Canada
  • 26/5-27/5
  • 2 total stops
  • 17h 36m total
  • Boston to Sydney
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 50 potential savings vs. average RT price).
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Average for round-trip flights in March 2026
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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 10 marzo 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

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

mar. 7/4

3:35 p.m.-11:24 p.m.

1 stop6h 49m

Sydney

mar. 14/4

5:30 a.m.-9:49 a.m.

1 stop5h 19m

C$ 874
Quickest round-trip

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

vie. 17/7

10:40 a.m.-4:39 p.m.

1 stop4h 59m

Sydney

dom. 19/7

5:05 a.m.-9:53 a.m.

1 stop5h 48m

C$ 881

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

mié. 22/4

10:45 a.m.-11:24 p.m.

2 stops11h 39m

Sydney

vie. 1/5

5:30 a.m.-9:45 a.m.

1 stop5h 15m

C$ 885

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

mié. 22/4

10:45 a.m.-11:24 p.m.

2 stops11h 39m

Sydney

mié. 29/4

5:30 a.m.-9:49 a.m.

1 stop5h 19m

C$ 885

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

mié. 15/7

6:00 a.m.-4:39 p.m.

2 stops9h 39m

Sydney

mar. 21/7

5:20 p.m.-9:27 p.m.

1 stop5h 07m

C$ 885

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

jue. 7/5

5:10 a.m.-4:39 p.m.

2 stops10h 29m

Sydney

dom. 10/5

5:00 a.m.-9:54 a.m.

1 stop5h 54m

C$ 892

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

vie. 17/7

10:40 a.m.-4:39 p.m.

1 stop4h 59m

Sydney

dom. 26/7

5:20 p.m.-8:44 a.m.

2 stops16h 24m

C$ 907

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

mar. 26/5

10:45 a.m.-12:14 a.m.

1 stop12h 29m

Sydney

mié. 27/5

5:20 p.m.-9:27 p.m.

1 stop5h 07m

C$ 915

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

vie. 3/4

10:40 a.m.-11:24 p.m.

1 stop11h 44m

Sydney

vie. 10/4

5:30 a.m.-9:49 a.m.

1 stop5h 19m

C$ 916

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/3

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 6h 49m. Air Canada provides one of the quickest options available for as low as C$ 874. 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

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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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