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Cheap flights from Boston to Sydney from $342

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 10/26. 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
0 bags

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Cheap round-trip flights

Air Canada Logo
6:15 am - 10:53 pmBOS-YQY
15h 38m2 stops
Air Canada Logo
5:30 am - 9:32 amYQY-BOS
5h 02m1 stop
$745Air Canada
Find Deal
Fri, Jan 9 - Sun, Jan 11
Air Canada Logo
10:20 am - 3:48 pmBOS-YQY
4h 28m1 stop
Air Canada Logo
4:35 pm - 9:26 pmYQY-BOS
5h 51m1 stop
$754Air Canada
Find Deal
Fri, Oct 17 - Fri, Oct 24
Air Canada Logo
6:00 am - 12:35 amBOS-YQY
17h 35m1 stop
Air Canada Logo
5:15 am - 9:55 amYQY-BOS
5h 40m1 stop
$755Air Canada
Find Deal
Sat, Oct 18 - Sat, Oct 25
Air Canada Logo
6:00 am - 12:35 amBOS-YQY
17h 35m1 stop
Air Canada Logo
4:35 pm - 9:55 amYQY-BOS
18h 20m2 stops
$779Air Canada
Find Deal
Sat, Oct 18 - Fri, Oct 24
Air Canada Logo
10:20 am - 3:48 pmBOS-YQY
4h 28m1 stop
Air Canada Logo
4:35 pm - 9:25 pmYQY-BOS
5h 50m1 stop
$783Air Canada
Find Deal
Fri, Oct 17 - Thu, Oct 23
Air Canada Logo
6:15 am - 10:53 pmBOS-YQY
15h 38m2 stops
Air Canada Logo
5:30 am - 10:37 pmYQY-BOS
18h 07m2 stops
$785Air Canada
Find Deal
Fri, Jan 9 - Sun, Jan 11
Air Canada Logo
6:00 am - 3:48 pmBOS-YQY
8h 48m1 stop
Air Canada Logo
4:35 pm - 9:26 pmYQY-BOS
5h 51m1 stop
$787Air Canada
Find Deal
Tue, Oct 14 - Fri, Oct 24
Air Canada Logo
6:00 am - 12:35 amBOS-YQY
17h 35m1 stop
Air Canada Logo
4:35 pm - 11:29 amYQY-BOS
19h 54m2 stops
$789Air Canada
Find Deal
Sat, Oct 18 - Thu, Oct 23
Air Canada Logo
1:00 pm - 10:29 pmBOS-YQY
8h 29m2 stops
Air Canada Logo
5:30 am - 9:32 amYQY-BOS
5h 02m1 stop
$790Air Canada
Find Deal
Tue, Nov 4 - Tue, Nov 11
Air Canada Logo
10:20 am - 3:48 pmBOS-YQY
4h 28m1 stop
Air Canada Logo
4:35 pm - 9:55 amYQY-BOS
18h 20m2 stops
$794Air Canada
Find Deal
Fri, Oct 17 - Thu, Oct 23

Air Canada flights from Boston to Sydney, Nova Scotia

Our best Air Canada deals on Boston to Sydney, Nova Scotia flight tickets
Air Canada
Jan 9
BOS6:15 amBoston Logan Intl
15h 38m
2 stops
YQY10:53 pmSydney
Jan 11
YQY5:30 amSydney
5h 02m
1 stop
BOS9:32 amBoston Logan Intl
$745
Find similar
Air Canada
Oct 17
BOS10:20 amBoston Logan Intl
4h 28m
1 stop
YQY3:48 pmSydney
Oct 24
YQY4:35 pmSydney
5h 51m
1 stop
BOS9:26 pmBoston Logan Intl
$754
Find similar
Air Canada
Oct 18
BOS6:00 amBoston Logan Intl
17h 35m
1 stop
YQY12:35 amSydney
Oct 25
YQY5:15 amSydney
5h 40m
1 stop
BOS9:55 amBoston Logan Intl
$755
Find similar

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 832,500 searches. Data last updated September 17, 2025.
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

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Fri 1/9

6:15 am-10:53 pm

2 stops15h 38m

Sydney

Sun 1/11

5:30 am-9:32 am

1 stop5h 02m

$745

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Fri 10/17

10:20 am-3:48 pm

1 stop4h 28m

Sydney

Fri 10/24

4:35 pm-9:26 pm

1 stop5h 51m

$754

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Sat 10/18

6:00 am-12:35 am

1 stop17h 35m

Sydney

Sat 10/25

5:15 am-9:55 am

1 stop5h 40m

$755

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Sat 10/18

6:00 am-12:35 am

1 stop17h 35m

Sydney

Fri 10/24

4:35 pm-9:55 am

2 stops18h 20m

$779

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Fri 10/17

10:20 am-3:48 pm

1 stop4h 28m

Sydney

Thu 10/23

4:35 pm-9:25 pm

1 stop5h 50m

$783

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Fri 1/9

6:15 am-10:53 pm

2 stops15h 38m

Sydney

Sun 1/11

5:30 am-10:37 pm

2 stops18h 07m

$785

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Tue 10/14

6:00 am-3:48 pm

1 stop8h 48m

Sydney

Fri 10/24

4:35 pm-9:26 pm

1 stop5h 51m

$787

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Sat 10/18

6:00 am-12:35 am

1 stop17h 35m

Sydney

Thu 10/23

4:35 pm-11:29 am

2 stops19h 54m

$789

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Tue 11/4

1:00 pm-10:29 pm

2 stops8h 29m

Sydney

Tue 11/11

5:30 am-9:32 am

1 stop5h 02m

$790

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

Fri 10/17

10:20 am-3:48 pm

1 stop4h 28m

Sydney

Thu 10/23

4:35 pm-9:55 am

2 stops18h 20m

$794

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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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 day to depart on your flight to Sydney, Nova Scotia?

The cheapest day to depart from Boston to Sydney, Nova Scotia is on a Tuesday when prices can be found for as low as $472. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Boston to Sydney, Nova Scotia for around $1,359.

What is the cheapest time of day to depart on your flight to Sydney, Nova Scotia?

According to our data, the cheapest time of day to fly to Sydney, Nova Scotia is in the afternoon. momondo users have found flights departing from Boston to Sydney, Nova Scotia in the afternoon for as low as $918. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Sydney, Nova Scotia, so prices are often more expensive at around $1,030 per ticket.

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

Direct flights

None
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

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

    Sydney is 596.7 mi away from Boston Logan Intl. Typically, this will take 4h 28m by plane in normal conditions.

  • 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 updated daily.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Sydney Airport?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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 required for your trip to Sydney Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Boston to Sydney, Nova Scotia?

Best airlines flying from Boston to Sydney, Nova Scotia

Compare and see reviews for airlines that fly from Boston to Sydney, Nova Scotia with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $587Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights

Traveling to a place near Sydney?

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

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?

All flight searches from Boston to Sydney on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from Boston.

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

If you are simply researching potential flights to Sydney, momondo offers a useful price alert feature which will track prices for flights to Sydney from Boston and alert you when they change.

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