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Cheap flights from Boston to Sydney from $340

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 10/14. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Boston to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
10:40 am - 4:38 pm
BOS
-
YQY
4h 58m
1 stop
Air Canada Logo
5:20 pm - 9:26 pm
YQY
-
BOS
5h 06m
1 stop
$728Air Canada
mié., oct. 14 - sáb., oct. 17
Air Canada Logo
4:55 pm - 12:12 am
BOS
-
YQY
6h 17m
1 stop
Air Canada Logo
5:20 pm - 9:26 pm
YQY
-
BOS
5h 06m
1 stop
$733Air Canada
vie., sep. 4 - lun., sep. 7
Air Canada Logo
6:00 am - 4:38 pm
BOS
-
YQY
9h 38m
2 stops
Air Canada Logo
5:20 pm - 9:26 pm
YQY
-
BOS
5h 06m
1 stop
$736Air Canada
mié., oct. 14 - sáb., oct. 17
Air Canada Logo
6:00 am - 4:38 pm
BOS
-
YQY
9h 38m
2 stops
Air Canada Logo
5:20 pm - 8:52 am
YQY
-
BOS
16h 32m
2 stops
$759Air Canada
mié., oct. 14 - sáb., oct. 17
Air Canada Logo
10:40 am - 4:14 pm
BOS
-
YQY
4h 34m
1 stop
Air Canada Logo
5:05 pm - 9:27 pm
YQY
-
BOS
5h 22m
1 stop
$762Air Canada
mar., jul. 21 - mar., jul. 28
Air Canada Logo
4:55 pm - 12:07 am
BOS
-
YQY
6h 12m
1 stop
Air Canada Logo
5:05 pm - 9:27 pm
YQY
-
BOS
5h 22m
1 stop
$767Air Canada
mié., jul. 15 - vie., jul. 17
Air Canada Logo
6:00 am - 4:14 pm
BOS
-
YQY
9h 14m
2 stops
Air Canada Logo
5:05 pm - 9:27 pm
YQY
-
BOS
5h 22m
1 stop
$770Air Canada
mar., jul. 21 - mar., jul. 28
Air Canada Logo
6:00 am - 4:20 pm
BOS
-
YQY
9h 20m
2 stops
Air Canada Logo
5:05 am - 11:52 am
YQY
-
BOS
7h 47m
1 stop
$775Air Canada
mié., ago. 12 - mié., ago. 19
Air Canada Logo
7:15 pm - 4:14 pm
BOS
-
YQY
19h 59m
2 stops
Air Canada Logo
5:05 pm - 9:27 pm
YQY
-
BOS
5h 22m
1 stop
$785Air Canada
mié., jul. 15 - vie., jul. 17
Air Canada Logo
6:00 am - 4:14 pm
BOS
-
YQY
9h 14m
2 stops
Air Canada Logo
5:05 pm - 8:52 am
YQY
-
BOS
16h 47m
2 stops
$793Air Canada
mar., jul. 21 - mar., jul. 28

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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
Oct 14
BOS10:40 amBoston Logan Intl
4h 58m
1 stop
YQY4:38 pmSydney
Oct 17
YQY5:20 pmSydney
5h 06m
1 stop
BOS9:26 pmBoston Logan Intl
$728
Air Canada
Sep 4
BOS4:55 pmBoston Logan Intl
6h 17m
1 stop
YQY12:12 amSydney
Sep 7
YQY5:20 pmSydney
5h 06m
1 stop
BOS9:26 pmBoston Logan Intl
$733
Air Canada
Oct 14
BOS6:00 amBoston Logan Intl
9h 38m
2 stops
YQY4:38 pmSydney
Oct 17
YQY5:20 pmSydney
5h 06m
1 stop
BOS9:26 pmBoston Logan Intl
$736

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 junio 29, 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 - YQY

BOSYQY

Boston Logan Intl

mié. 10/14

10:40 am-4:38 pm

1 stop4h 58m

Sydney

sáb. 10/17

5:20 pm-9:26 pm

1 stop5h 06m

$728

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

vie. 9/4

4:55 pm-12:12 am

1 stop6h 17m

Sydney

lun. 9/7

5:20 pm-9:26 pm

1 stop5h 06m

$733

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

mié. 10/14

6:00 am-4:38 pm

2 stops9h 38m

Sydney

sáb. 10/17

5:20 pm-9:26 pm

1 stop5h 06m

$736

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

mié. 10/14

6:00 am-4:38 pm

2 stops9h 38m

Sydney

sáb. 10/17

5:20 pm-8:52 am

2 stops16h 32m

$759
Quickest round-trip

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

mar. 7/21

10:40 am-4:14 pm

1 stop4h 34m

Sydney

mar. 7/28

5:05 pm-9:27 pm

1 stop5h 22m

$762

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

mié. 7/15

4:55 pm-12:07 am

1 stop6h 12m

Sydney

vie. 7/17

5:05 pm-9:27 pm

1 stop5h 22m

$767

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

mar. 7/21

6:00 am-4:14 pm

2 stops9h 14m

Sydney

mar. 7/28

5:05 pm-9:27 pm

1 stop5h 22m

$770

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

mié. 8/12

6:00 am-4:20 pm

2 stops9h 20m

Sydney

mié. 8/19

5:05 am-11:52 am

1 stop7h 47m

$775

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

mié. 7/15

7:15 pm-4:14 pm

2 stops19h 59m

Sydney

vie. 7/17

5:05 pm-9:27 pm

1 stop5h 22m

$785

BostonSydney

BOS - YQY

BOSYQY

Boston Logan Intl

mar. 7/21

6:00 am-4:14 pm

2 stops9h 14m

Sydney

mar. 7/28

5:05 pm-8:52 am

2 stops16h 47m

$793

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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 40m

Direct flights

None
The fastest flight from Boston to Sydney, Nova Scotia takes 4h 40m
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?

    Sydney is 596.7 mi away from Boston Logan Intl. Typically, this will take 4h 40m 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 $682Free CancellationRating
7.1
11,270 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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1 adult
mié. 7/29
mié. 8/5
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Find better results for your trip to Canada

Airports servicing Nova Scotia

Halifax Intl Airport