Which airports can I use when flying from Boston to Sydney?

Flights from Boston to Sydney usually depart from Boston Logan Intl (BOS) and arrive at Sydney (YQY).

What cabin classes can I book on flights from Boston to Sydney?

Only Economy Class is available on flights from Boston to Sydney.

Which airports do connecting flights from Boston to Sydney pass through?

Connecting flights from Boston to Sydney most commonly pass through: • Montreal Pierre Elliott Trudeau Intl (YUL) - 91% of one-stop connections • Toronto Pearson Intl (YYZ) - 9% of one-stop connections

Can I save money by using flexible dates for flights from Boston to Sydney?

Yes. Flexible dates can save you up to 44% on flights from Boston to Sydney. Friday is the cheapest departure day at $739 round-trip on average, while Monday is the most expensive at $1,302, a difference of $563. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

How long is a flight from Boston to Sydney?

There are currently no nonstop flights available from Boston to Sydney. Flights with 1 layover take between 5h 37m and 5h 55m in total, depending on the connection.

Do I need a passport to fly from Boston to Sydney?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from Boston to Sydney changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $849 to $966. That means the highest observed fare was about 13% higher than the lowest one.

How are flight prices from Boston to Sydney looking right now?

One-way fares from Boston to Sydney are currently higher than usual. Average one-way flight prices are about $470, which is 38% above the typical average for this route.

How much time can I save by choosing a different layover airport from Boston to Sydney?

Flying via Toronto Pearson Intl (YYZ) gives the shortest average 1-stop total travel time at 5h 37m, compared with 5h 55m via Montreal Pierre Elliott Trudeau Intl (YUL).

What is the time difference between Boston and Sydney?

Sydney is 1 hour ahead of Boston (Atlantic Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

How much should I expect to pay for a Boston to Sydney flight?

Round-trip flights from Boston to Sydney range from $771 to $816, with an average of $800 over the past 12 months. Anything below $771 counts as a good deal.

What's the cheapest day of the week to fly from Boston to Sydney?

Based on deals KAYAK users found in the last 12 months, Friday is the cheapest day of the week to fly from Boston to Sydney. It’s 8% cheaper than the average day, while Monday is the most expensive, with prices 62% higher.

Which airline is the cheapest to fly from Boston to Sydney?

Air Canada ($891) offered the cheapest round-trip ticket from Boston to Sydney in the last 5 days.

What’s the most popular layover airport when flying from Boston to Sydney?

Montreal Pierre Elliott Trudeau Intl (YUL) is the most popular layover for the Boston to Sydney route. 91% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via YUL.

What is the cheapest layover airport when flying from Boston to Sydney?

Flights via Montreal Pierre Elliott Trudeau Intl (YUL) offer the most affordable fares, with an average round-trip price of $847. Based on KAYAK data over the past 3 months.

When flying from Boston to Sydney which airport offers the shortest layover?

Toronto Pearson Intl (YYZ) had the shortest average connection time for Boston to Sydney layovers at 3h 14m over the past 3 months.

$415 CHEAP FLIGHTS from Boston to Sydney (BOS - YQY)

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$849

Typical prices: $771-$816

Multiple Airlines

Sat 10/27Sat 11/3

BOS - YQY • 2 stops

Cheapest one-way

$415

Typical prices: $339-$366

Air Canada

Sun 12/2

BOS - YQY • 2 stops

When to travel

December

Cheapest • 4% price drop

May

Most popular

Good to know

Top layover airports

Montreal Pierre Elliott Trudeau Intl (YUL)

Cheapest • Avg $847 (round-trip)

Toronto Pearson Intl (YYZ)

Shortest trip • 5h 37m (one-way)

Insights

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Flight Deals

Cheap Flights from Boston to Sydney (BOS-YQY)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Boston to Sydney

Tue, Oct 27 - Tue, Nov 3

3:10 pm - 12:26 amBOS Boston Logan Intl-YQY Sydney

8h 16m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

12:10 pm - 5:58 pmYQY Sydney-BOS Boston Logan Intl

6h 48m1 stop Toronto Pearson Intl

$849Multiple Airlines

Tue, Oct 27 - Tue, Nov 3

3:10 pm - 12:26 amBOS Boston Logan Intl-YQY Sydney

8h 16m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

12:10 pm - 9:28 pmYQY Sydney-BOS Boston Logan Intl

10h 18m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$852Multiple Airlines

Tue, Oct 27 - Tue, Nov 3

6:35 pm - 12:26 amBOS Boston Logan Intl-YQY Sydney

4h 51m1 stop Montreal Pierre Elliott Trudeau Intl

12:10 pm - 5:58 pmYQY Sydney-BOS Boston Logan Intl

6h 48m1 stop Toronto Pearson Intl

$858Multiple Airlines

Tue, Nov 10 - Tue, Nov 17

3:10 pm - 12:26 amBOS Boston Logan Intl-YQY Sydney

8h 16m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

12:10 pm - 5:58 pmYQY Sydney-BOS Boston Logan Intl

6h 48m1 stop Toronto Pearson Intl

$891Air Canada

Tue, Nov 10 - Tue, Nov 17

3:10 pm - 12:26 amBOS Boston Logan Intl-YQY Sydney

8h 16m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

6:05 am - 5:58 pmYQY Sydney-BOS Boston Logan Intl

12h 53m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

$894Air Canada

Wed, Nov 11 - Wed, Nov 18

9:35 am - 12:26 amBOS Boston Logan Intl-YQY Sydney

13h 51m2 stops Toronto Island Montreal Pierre Elliott Trudeau Intl

12:10 pm - 5:58 pmYQY Sydney-BOS Boston Logan Intl

6h 48m1 stop Toronto Pearson Intl

$906Air Canada

Wed, Nov 11 - Wed, Nov 18

9:35 am - 12:26 amBOS Boston Logan Intl-YQY Sydney

13h 51m2 stops Toronto Island Montreal Pierre Elliott Trudeau Intl

6:05 am - 2:18 pmYQY Sydney-BOS Boston Logan Intl

9h 13m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

$910Air Canada

Fri, Nov 6 - Sun, Nov 8

7:40 pm - 11:30 amBOS Boston Logan Intl-YQY Sydney

14h 50m1 stop Toronto Pearson Intl

12:10 pm - 5:58 pmYQY Sydney-BOS Boston Logan Intl

6h 48m1 stop Toronto Pearson Intl

$911Air Canada

Tue, Nov 10 - Tue, Nov 17

7:40 pm - 11:29 amBOS Boston Logan Intl-YQY Sydney

14h 49m1 stop Toronto Pearson Intl

12:10 pm - 5:58 pmYQY Sydney-BOS Boston Logan Intl

6h 48m1 stop Toronto Pearson Intl

$912Air Canada

Wed, Nov 11 - Wed, Nov 18

7:40 pm - 11:30 amBOS Boston Logan Intl-YQY Sydney

14h 50m1 stop Toronto Pearson Intl

12:10 pm - 5:58 pmYQY Sydney-BOS Boston Logan Intl

6h 48m1 stop Toronto Pearson Intl

$912Air Canada

Booking Insights

Price, demand and travel trends for Boston to Sydney flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Layovers

What's the cheapest day of the week to fly from Boston to Sydney?: Based on deals KAYAK users found in the last 12 months, Friday is the cheapest day of the week to fly from Boston to Sydney. It’s 8% cheaper than the average day, while Monday is the most expensive, with prices 62% higher.

Find deals

Low season	October
High season	May
Cheapest flight	$415

Beat the crowds with an average 36% drop in travelers.

One-way flight from Boston to Sydney

When to book flights from Boston to Sydney

Are your dates flexible? Find out the best times to travel from Boston to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from Boston to Sydney?
Only Economy Class is available on flights from Boston to Sydney.
How long is a flight from Boston to Sydney?
There are currently no nonstop flights available from Boston to Sydney. Flights with 1 layover take between 5h 37m and 5h 55m in total, depending on the connection.
Do I need a passport to fly from Boston to Sydney?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How much should I expect to pay for a Boston to Sydney flight?
Round-trip flights from Boston to Sydney range from $771 to $816, with an average of $800 over the past 12 months. Anything below $771 counts as a good deal.
Have flight prices from Boston to Sydney changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $849 to $966. That means the highest observed fare was about 13% higher than the lowest one.
How are flight prices from Boston to Sydney looking right now?
One-way fares from Boston to Sydney are currently higher than usual. Average one-way flight prices are about $470, which is 38% above the typical average for this route.
Which airports can I use when flying from Boston to Sydney?
Flights from Boston to Sydney usually depart from Boston Logan Intl (BOS) and arrive at Sydney (YQY).
Which airports do connecting flights from Boston to Sydney pass through?
Connecting flights from Boston to Sydney most commonly pass through:

• Montreal Pierre Elliott Trudeau Intl (YUL) - 91% of one-stop connections
• Toronto Pearson Intl (YYZ) - 9% of one-stop connections
Can I save money by using flexible dates for flights from Boston to Sydney?
Yes. Flexible dates can save you up to 44% on flights from Boston to Sydney. Friday is the cheapest departure day at $739 round-trip on average, while Monday is the most expensive at $1,302, a difference of $563.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
How much time can I save by choosing a different layover airport from Boston to Sydney?
Flying via Toronto Pearson Intl (YYZ) gives the shortest average 1-stop total travel time at 5h 37m, compared with 5h 55m via Montreal Pierre Elliott Trudeau Intl (YUL).
What is the time difference between Boston and Sydney?
Sydney is 1 hour ahead of Boston (Atlantic Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

If your dates are flexible, aim for a Friday departure and avoid flying on Monday. On this route, Friday flights average $739, about $563 less than Monday fares (43% savings) based on the last 12 months.
If you can choose when to travel, plan your Boston to Sydney trip for December. Fares historically average $767 round-trip in that month - typically $535 less than the most expensive month, which is January (based on the last 12 months).

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BOS - YQY

$415 Find Cheap Flights from Boston to Sydney - Compare and Save

Everything you should know

Cheap Flights from Boston to Sydney (BOS-YQY)

Recent round-trip flight deals from Boston to Sydney

Recent one-way flight deals from Boston to Sydney

Price, demand and travel trends for Boston to Sydney flights

What's the cheapest day of the week to fly from Boston to Sydney?

Which airline is the cheapest to fly from Boston to Sydney?

What’s the most popular layover airport when flying from Boston to Sydney?

What is the cheapest layover airport when flying from Boston to Sydney?

When flying from Boston to Sydney which airport offers the shortest layover?

Key details for Boston to Sydney flights

Low season

High season

Cheapest flight

When to book flights from Boston to Sydney

Your Boston to Sydney flight questions, answered

Your guide to booking Boston to Sydney flights

More options for your flight from Boston to Sydney

Complete your trip to Sydney with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Boston to Sydney

Find direct flights to and from Boston and Sydney

Flights from domestic origins to Sydney

Flights to other popular destinations