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Cheap flights from Boston to Sydney, NS from C$ 966

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 26/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YQY
11 Oct — 18 Oct1
1 adult
1 adult, Economy

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 11 September 2025.

Round-trip from

C$ 966
WestJet
  • WestJet
  • 26/9-4/10
  • 4 total stops
  • 53h 06m 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 11 September 2025.

Fri 26/912:15 p.m.BOS - YQY
2 stops29h 36mMultiple Airlines
Sat 4/107:40 p.m.YQY - BOS
2 stops23h 30mMultiple Airlines
Deal found 10/9C$ 966
Sun 28/93:50 p.m.BOS - YQY
3 stops21h 40mMultiple Airlines
Sat 4/107:40 p.m.YQY - BOS
2 stops23h 30mMultiple Airlines
Deal found 9/9C$ 994
Fri 17/1010:20 a.m.BOS - YQY
1 stop4h 28mAir Canada
Fri 24/104:35 p.m.YQY - BOS
1 stop5h 51mAir Canada
Deal found 11/9C$ 1,031
Sun 28/912:15 p.m.BOS - YQY
1 stop10h 54mAir Canada
Sat 4/104:30 p.m.YQY - BOS
1 stop5h 55mAir Canada
Deal found 9/9C$ 1,063
Thu 16/1010:40 a.m.BOS - YQY
2 stops28h 08mAir Canada
Fri 24/105:15 a.m.YQY - BOS
1 stop11h 44mAir Canada
Deal found 11/9C$ 1,066
Fri 17/1010:20 a.m.BOS - YQY
1 stop4h 28mAir Canada
Tue 21/104:35 p.m.YQY - BOS
1 stop5h 51mAir Canada
Deal found 10/9C$ 1,071
Tue 14/106:00 a.m.BOS - YQY
1 stop8h 48mAir Canada
Fri 24/104:35 p.m.YQY - BOS
1 stop5h 51mAir Canada
Deal found 11/9C$ 1,078
Thu 16/1012:15 p.m.BOS - YQY
2 stops26h 33mAir Canada
Thu 23/104:35 p.m.YQY - BOS
2 stops18h 20mAir Canada
Deal found 11/9C$ 1,079

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 11 September 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

Fri 26/9

12:15 p.m.-6:51 p.m.

2 stops29h 36m

Sydney

Sat 4/10

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

2 stops23h 30m

C$ 966

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Sun 28/9

3:50 p.m.-2:30 p.m.

3 stops21h 40m

Sydney

Sat 4/10

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

2 stops23h 30m

C$ 994

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Sun 28/9

12:15 p.m.-12:09 a.m.

1 stop10h 54m

Sydney

Sat 4/10

4:30 p.m.-9:25 p.m.

1 stop5h 55m

C$ 1,063

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Sat 18/10

6:00 a.m.-12:35 a.m.

1 stop17h 35m

Sydney

Fri 24/10

5:15 a.m.-3:59 p.m.

1 stop11h 44m

C$ 1,066

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Thu 16/10

10:40 a.m.-3:48 p.m.

2 stops28h 08m

Sydney

Fri 24/10

4:35 p.m.-9:55 a.m.

2 stops18h 20m

C$ 1,066

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Fri 17/10

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

1 stop4h 28m

Sydney

Sat 25/10

4:35 p.m.-9:25 p.m.

1 stop5h 50m

C$ 1,071

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Fri 17/10

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

1 stop4h 28m

Sydney

Tue 21/10

4:35 p.m.-9:26 p.m.

1 stop5h 51m

C$ 1,071

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Fri 17/10

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

1 stop4h 28m

Sydney

Thu 23/10

4:35 p.m.-9:25 p.m.

1 stop5h 50m

C$ 1,071

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Sat 18/10

6:00 a.m.-12:35 a.m.

1 stop17h 35m

Sydney

Thu 23/10

4:35 p.m.-11:29 a.m.

2 stops19h 54m

C$ 1,079

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

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 10h 54m. Air Canada provides one of the quickest options available for as low as C$ 1,063. 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.

  • 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.

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

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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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