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Cheap flights from Boston to Sydney from C$ 445

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Sydney departing on 6/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Boston to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:35 p.m. - 7:25 p.m.BOS  Boston Logan Intl-YQY Sydney
26h 50m3 stops Montreal Pierre Elliott Trudeau Intl Victoria Intl Calgary
Multiple Airlines Logo
5:10 p.m. - 8:52 a.m.YQY  Sydney-BOS Boston Logan Intl
16h 42m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Island
C$ 909Multiple Airlines
Mon, 7 Sep - Mon, 14 Sep
Multiple Airlines Logo
6:30 p.m. - 7:25 p.m.BOS  Boston Logan Intl-YQY Sydney
23h 55m1 stop Calgary
Multiple Airlines Logo
5:10 p.m. - 9:26 p.m.YQY  Sydney-BOS Boston Logan Intl
5h 16m1 stop Montreal Pierre Elliott Trudeau Intl
C$ 913Multiple Airlines
Mon, 7 Sep - Mon, 14 Sep
Multiple Airlines Logo
9:35 a.m. - 7:25 p.m.BOS  Boston Logan Intl-YQY Sydney
32h 50m3 stops Toronto Island Edmonton Calgary
Multiple Airlines Logo
5:10 p.m. - 9:26 p.m.YQY  Sydney-BOS Boston Logan Intl
5h 16m1 stop Montreal Pierre Elliott Trudeau Intl
C$ 914Multiple Airlines
Mon, 7 Sep - Mon, 14 Sep
Multiple Airlines Logo
6:30 p.m. - 7:25 p.m.BOS  Boston Logan Intl-YQY Sydney
23h 55m1 stop Calgary
Multiple Airlines Logo
5:10 p.m. - 8:52 a.m.YQY  Sydney-BOS Boston Logan Intl
16h 42m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
C$ 938Multiple Airlines
Mon, 7 Sep - Mon, 14 Sep
Air Canada Logo
10:40 a.m. - 4:07 p.m.BOS  Boston Logan Intl-YQY Sydney
4h 27m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:10 p.m. - 9:26 p.m.YQY  Sydney-BOS Boston Logan Intl
5h 16m1 stop Montreal Pierre Elliott Trudeau Intl
C$ 1,003Air Canada
Fri, 11 Sep - Fri, 18 Sep
Air Canada Logo
10:40 a.m. - 4:07 p.m.BOS  Boston Logan Intl-YQY Sydney
4h 27m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:20 p.m. - 9:26 p.m.YQY  Sydney-BOS Boston Logan Intl
5h 06m1 stop Montreal Pierre Elliott Trudeau Intl
C$ 1,003Air Canada
Wed, 30 Sep - Sat, 3 Oct
Air Canada Logo
10:40 a.m. - 4:38 p.m.BOS  Boston Logan Intl-YQY Sydney
4h 58m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:20 p.m. - 9:26 p.m.YQY  Sydney-BOS Boston Logan Intl
5h 06m1 stop Montreal Pierre Elliott Trudeau Intl
C$ 1,003Air Canada
Thu, 1 Oct - Tue, 6 Oct
Air Canada Logo
10:40 a.m. - 4:38 p.m.BOS  Boston Logan Intl-YQY Sydney
4h 58m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:20 p.m. - 9:26 p.m.YQY  Sydney-BOS Boston Logan Intl
5h 06m1 stop Montreal Pierre Elliott Trudeau Intl
C$ 1,003Air Canada
Sun, 11 Oct - Thu, 15 Oct
Air Canada Logo
10:40 a.m. - 4:38 p.m.BOS  Boston Logan Intl-YQY Sydney
4h 58m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:20 p.m. - 9:26 p.m.YQY  Sydney-BOS Boston Logan Intl
5h 06m1 stop Montreal Pierre Elliott Trudeau Intl
C$ 1,003Air Canada
Fri, 2 Oct - Sun, 4 Oct
Air Canada Logo
6:00 a.m. - 4:38 p.m.BOS  Boston Logan Intl-YQY Sydney
9h 38m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:20 p.m. - 9:26 p.m.YQY  Sydney-BOS Boston Logan Intl
5h 06m1 stop Montreal Pierre Elliott Trudeau Intl
C$ 1,014Air Canada
Fri, 2 Oct - Sun, 4 Oct

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Air Canada flights from Boston to Sydney, Nova Scotia

Our best Air Canada deals on Boston to Sydney, Nova Scotia flight tickets
Air Canada
11 Oct
BOS10:40 a.m.Boston Logan Intl
4h 58m
1 stop
YQY4:38 p.m.Sydney
15 Oct
YQY5:20 p.m.Sydney
5h 06m
1 stop
BOS9:26 p.m.Boston Logan Intl
C$ 1,003
Air Canada
11 Oct
BOS6:00 a.m.Boston Logan Intl
9h 38m
2 stops
YQY4:38 p.m.Sydney
15 Oct
YQY5:20 p.m.Sydney
5h 06m
1 stop
BOS9:26 p.m.Boston Logan Intl
C$ 1,014
Air Canada
10 Sep
BOS4:55 p.m.Boston Logan Intl
6h 50m
1 stop
YQY12:45 a.m.Sydney
17 Sep
YQY5:05 a.m.Sydney
5h 50m
1 stop
BOS9:55 a.m.Boston Logan Intl
C$ 1,046

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Sydney, Nova Scotia 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, momondo users made 96,600 searches. Data last updated 17 August 2026.
Use the filters below to find and compare flights from Boston to Sydney, Nova Scotia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Mon 7/9

3:35 p.m.-7:25 p.m.

3 stops26h 50m

Sydney

Mon 14/9

5:10 p.m.-8:52 a.m.

2 stops16h 42m

C$ 909

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Mon 7/9

6:30 p.m.-7:25 p.m.

1 stop23h 55m

Sydney

Mon 14/9

5:10 p.m.-9:26 p.m.

1 stop5h 16m

C$ 913

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Mon 7/9

9:35 a.m.-7:25 p.m.

3 stops32h 50m

Sydney

Mon 14/9

5:10 p.m.-9:26 p.m.

1 stop5h 16m

C$ 914

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Mon 7/9

6:30 p.m.-7:25 p.m.

1 stop23h 55m

Sydney

Mon 14/9

5:10 p.m.-8:52 a.m.

2 stops16h 42m

C$ 938

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Fri 11/9

10:40 a.m.-4:07 p.m.

1 stop4h 27m

Sydney

Fri 18/9

5:10 p.m.-9:26 p.m.

1 stop5h 16m

C$ 1,003
Quickest round-trip

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Wed 30/9

10:40 a.m.-4:07 p.m.

1 stop4h 27m

Sydney

Sat 3/10

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

1 stop5h 06m

C$ 1,003

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Thu 1/10

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

1 stop4h 58m

Sydney

Tue 6/10

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

1 stop5h 06m

C$ 1,003

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Sun 11/10

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

1 stop4h 58m

Sydney

Thu 15/10

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

1 stop5h 06m

C$ 1,003

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Fri 2/10

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

1 stop4h 58m

Sydney

Sun 4/10

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

1 stop5h 06m

C$ 1,003

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Fri 2/10

6:00 a.m.-4:38 p.m.

2 stops9h 38m

Sydney

Sun 4/10

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

1 stop5h 06m

C$ 1,014

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Sydney from

How to get the cheapest flight ticket from Boston to Sydney, Nova Scotia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Boston Logan Intl to Sydney?

Air Canada is the most popular carrier operating from Boston Logan Intl to Sydney

When to book flights from Boston to Sydney, Nova Scotia

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Sydney, Nova Scotia according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Sydney, Nova Scotia (BOS to YQY) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Sydney, Nova Scotia

Fastest flight time

4h 27m

Direct flights

None
The fastest flight from Boston to Sydney, Nova Scotia takes 4h 27m
There are no direct flights from Boston to Sydney, Nova Scotia. There are no popular flight routes from Boston to Sydney, Nova Scotia.
Search flight deals

Frequently asked questions about flying from Boston to Sydney, Nova Scotia

  • How far is Boston Logan Intl to Sydney by plane?

    The straight-line distance from Boston Logan Intl to Sydney is 960.3 km. A reasonable flight in good conditions will take 4h 27m.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Sydney Airport?

    Prices for flights from Boston Logan Intl Airport to Sydney Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Boston Logan Intl Airport to Sydney Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to Sydney Airport.

  • What documentation or ID do you need to fly to Sydney Airport?

    The travel and health documents you'll need for your trip to Sydney Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sydney Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Sydney?

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

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Boston to Sydney for you.

Can I find flights from Boston to Sydney with flexible booking policies on momondo?

Yes. All flights to Sydney from Boston on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Boston to Sydney?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Boston to Sydney.

I’m not ready to book a flight from Boston to Sydney right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Boston to Sydney flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Sydney, Nova Scotia trip

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Find better results for your trip to Canada

Airports servicing Nova Scotia

Halifax Intl Airport