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Cheap flights from Boston to Sydney from $333

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 10/1. 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
6:35 pm - 12:26 amBOS  Boston Logan Intl-YQY Sydney
4h 51m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:45 am - 1:54 pmYQY  Sydney-BOS Boston Logan Intl
9h 09m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Island
$715Air Canada
Wed, Nov 4 - Sun, Nov 8
Air Canada Logo
10:40 am - 4:38 pmBOS  Boston Logan Intl-YQY Sydney
4h 58m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:20 pm - 9:26 pmYQY  Sydney-BOS Boston Logan Intl
5h 06m1 stop Montreal Pierre Elliott Trudeau Intl
$715Air Canada
Sat, Oct 10 - Fri, Oct 16
Air Canada Logo
6:35 pm - 12:26 amBOS  Boston Logan Intl-YQY Sydney
4h 51m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:45 am - 9:58 amYQY  Sydney-BOS Boston Logan Intl
5h 13m1 stop Montreal Pierre Elliott Trudeau Intl
$715Air Canada
Thu, Jan 7 - Sun, Jan 10
Air Canada Logo
10:40 am - 4:38 pmBOS  Boston Logan Intl-YQY Sydney
4h 58m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:20 pm - 9:26 pmYQY  Sydney-BOS Boston Logan Intl
5h 06m1 stop Montreal Pierre Elliott Trudeau Intl
$715Air Canada
Thu, Oct 15 - Sun, Oct 18
Air Canada Logo
10:40 am - 4:38 pmBOS  Boston Logan Intl-YQY Sydney
4h 58m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:20 pm - 9:26 pmYQY  Sydney-BOS Boston Logan Intl
5h 06m1 stop Montreal Pierre Elliott Trudeau Intl
$715Air Canada
Fri, Oct 2 - Mon, Oct 5
Air Canada Logo
10:40 am - 4:38 pmBOS  Boston Logan Intl-YQY Sydney
4h 58m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:20 pm - 9:26 pmYQY  Sydney-BOS Boston Logan Intl
5h 06m1 stop Montreal Pierre Elliott Trudeau Intl
$715Air Canada
Fri, Oct 2 - Sun, Oct 4
Air Canada Logo
10:40 am - 4:38 pmBOS  Boston Logan Intl-YQY Sydney
4h 58m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:20 pm - 9:26 pmYQY  Sydney-BOS Boston Logan Intl
5h 06m1 stop Montreal Pierre Elliott Trudeau Intl
$715Air Canada
Sun, Oct 11 - Fri, Oct 16
Air Canada Logo
6:35 pm - 12:26 amBOS  Boston Logan Intl-YQY Sydney
4h 51m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:45 am - 9:58 amYQY  Sydney-BOS Boston Logan Intl
5h 13m1 stop Montreal Pierre Elliott Trudeau Intl
$715Air Canada
Wed, Nov 4 - Sun, Nov 8
Air Canada Logo
2:45 pm - 12:26 amBOS  Boston Logan Intl-YQY Sydney
8h 41m2 stops Toronto Island Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:45 am - 1:54 pmYQY  Sydney-BOS Boston Logan Intl
9h 09m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Island
$715Air Canada
Wed, Nov 4 - Sun, Nov 8

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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
Nov 4
BOS6:35 pmBoston Logan Intl
4h 51m
1 stop
YQY12:26 amSydney
Nov 8
YQY5:45 amSydney
5h 13m
1 stop
BOS9:58 amBoston Logan Intl
$715
Air Canada
Oct 9
BOS5:00 pmBoston Logan Intl
6h 45m
1 stop
YQY12:45 amSydney
Oct 12
YQY5:20 pmSydney
5h 06m
1 stop
BOS9:26 pmBoston Logan Intl
$720
Air Canada
Oct 2
BOS10:40 amBoston Logan Intl
4h 58m
1 stop
YQY4:38 pmSydney
Oct 4
YQY5:20 pmSydney
5h 06m
1 stop
BOS9:26 pmBoston Logan Intl
$723

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 August 14, 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

Wed 11/4

6:35 pm-12:26 am

1 stop4h 51m

Sydney

Sun 11/8

5:45 am-1:54 pm

2 stops9h 09m

$715
Quickest round-trip

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Sat 10/10

10:40 am-4:38 pm

1 stop4h 58m

Sydney

Fri 10/16

5:20 pm-9:26 pm

1 stop5h 06m

$715

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Thu 1/7

6:35 pm-12:26 am

1 stop4h 51m

Sydney

Sun 1/10

5:45 am-9:58 am

1 stop5h 13m

$715

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Thu 10/15

10:40 am-4:38 pm

1 stop4h 58m

Sydney

Sun 10/18

5:20 pm-9:26 pm

1 stop5h 06m

$715

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Fri 10/2

10:40 am-4:38 pm

1 stop4h 58m

Sydney

Mon 10/5

5:20 pm-9:26 pm

1 stop5h 06m

$715

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Fri 10/2

10:40 am-4:38 pm

1 stop4h 58m

Sydney

Sun 10/4

5:20 pm-9:26 pm

1 stop5h 06m

$715

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Sun 10/11

10:40 am-4:38 pm

1 stop4h 58m

Sydney

Fri 10/16

5:20 pm-9:26 pm

1 stop5h 06m

$715

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Wed 11/4

6:35 pm-12:26 am

1 stop4h 51m

Sydney

Sun 11/8

5:45 am-9:58 am

1 stop5h 13m

$715

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Wed 11/4

2:45 pm-12:26 am

2 stops8h 41m

Sydney

Sun 11/8

5:45 am-1:54 pm

2 stops9h 09m

$715
Cheapest one-way
Quickest one-way

BostonSydney

BOS Boston Logan Intl - YQY Sydney

BOSYQY

Boston Logan Intl

Thu 10/1

10:40 am-4:38 pm

1 stop4h 58m

$333

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 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?

    Sydney is 596.7 mi away from Boston Logan Intl. Typically, this will take 4h 27m 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 $739Free CancellationRating
7.1
11,470 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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Find better results for your trip to Canada

Airports servicing Nova Scotia

Halifax Intl Airport