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?

Most connecting flights from Boston to Sydney pass through Montreal Pierre Elliott Trudeau Intl (YUL), which handles 100% of one-stop traffic on this route.

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.

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 showed a wide range, from about $912 to $2,103. That means the highest observed fare was about 2x higher than the lowest one.

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 $795 over the past 12 months. Anything below $771 counts as a good deal.

How much is a round-trip flight from Boston to Sydney?

Round-trip flights from Boston to Sydney typically range from $771 to $816. The lowest price found in the past 5 days was $912, on Air Canada.

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

Air Canada ($912) offered the cheapest round-trip ticket from Boston to Sydney in the last 5 days.

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 $786. Based on KAYAK data over the past 3 months.

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

Montreal Pierre Elliott Trudeau Intl (YUL) had the shortest average connection time for Boston to Sydney layovers at 4h 02m over the past 3 months.

$912 CHEAP FLIGHTS from Boston to Sydney (BOS - YQY)

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Cheapest round-trip

$912

Typical prices: $771-$816

Air Canada

Mon 12/24Mon 12/31

BOS - YQY • 2 stops

When to travel

September

Cheapest • 11% price drop

May

Most popular

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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

Thu, Dec 24 - Thu, Dec 31

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

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

5:45 am - 9:48 amYQY Sydney-BOS Boston Logan Intl

5h 03m1 stop Montreal Pierre Elliott Trudeau Intl

$912Air Canada

Thu, Dec 24 - Thu, Dec 31

10:25 am - 12:26 amBOS Boston Logan Intl-YQY Sydney

13h 01m1 stop Montreal Pierre Elliott Trudeau Intl

5:45 am - 9:48 amYQY Sydney-BOS Boston Logan Intl

5h 03m1 stop Montreal Pierre Elliott Trudeau Intl

$934Air Canada

Sat, Dec 5 - Tue, Dec 8

6:35 pm - 12:15 amBOS Boston Logan Intl-YQY Sydney

4h 40m1 stop Montreal Pierre Elliott Trudeau Intl

5:55 am - 9:48 amYQY Sydney-BOS Boston Logan Intl

4h 53m1 stop Montreal Pierre Elliott Trudeau Intl

$992Air Canada

Fri, Dec 18 - Mon, Dec 21

5:45 am - 12:26 amBOS Boston Logan Intl-YQY Sydney

17h 41m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

5:45 am - 9:48 amYQY Sydney-BOS Boston Logan Intl

5h 03m1 stop Montreal Pierre Elliott Trudeau Intl

$992Air Canada

Sat, Dec 5 - Tue, Dec 8

6:35 pm - 12:15 amBOS Boston Logan Intl-YQY Sydney

4h 40m1 stop Montreal Pierre Elliott Trudeau Intl

12:00 pm - 9:28 pmYQY Sydney-BOS Boston Logan Intl

10h 28m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$1,000Air Canada

Fri, Dec 18 - Mon, Dec 21

5:45 am - 12:26 amBOS Boston Logan Intl-YQY Sydney

17h 41m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

11:55 am - 9:28 pmYQY Sydney-BOS Boston Logan Intl

10h 33m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$1,000Air Canada

Sat, Dec 5 - Tue, Dec 8

3:10 pm - 12:15 amBOS Boston Logan Intl-YQY Sydney

8h 05m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

5:55 am - 2:18 pmYQY Sydney-BOS Boston Logan Intl

9h 23m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

$1,008Air Canada

Sat, Dec 5 - Sat, Dec 12

6:35 pm - 12:15 amBOS Boston Logan Intl-YQY Sydney

4h 40m1 stop Montreal Pierre Elliott Trudeau Intl

5:55 am - 9:48 amYQY Sydney-BOS Boston Logan Intl

4h 53m1 stop Montreal Pierre Elliott Trudeau Intl

$1,015Air Canada

Sun, Dec 6 - Sun, Dec 13

6:35 pm - 12:15 amBOS Boston Logan Intl-YQY Sydney

4h 40m1 stop Montreal Pierre Elliott Trudeau Intl

5:55 am - 9:48 amYQY Sydney-BOS Boston Logan Intl

4h 53m1 stop Montreal Pierre Elliott Trudeau Intl

$1,015Air Canada

Sat, Dec 5 - Sat, Dec 12

6:35 pm - 12:15 amBOS Boston Logan Intl-YQY Sydney

4h 40m1 stop Montreal Pierre Elliott Trudeau Intl

5:55 am - 9:48 amYQY Sydney-BOS Boston Logan Intl

4h 53m1 stop Montreal Pierre Elliott Trudeau Intl

$1,015Air 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

How much is a round-trip flight from Boston to Sydney? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boston to Sydney departing in december.

Find deals

High season	May
Cheapest flight	$912

The most popular month to fly with an average 44% increase in travelers.

Round-trip 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.
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 $795 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 showed a wide range, from about $912 to $2,103. That means the highest observed fare was about 2x higher than the lowest one.
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?
Most connecting flights from Boston to Sydney pass through Montreal Pierre Elliott Trudeau Intl (YUL), which handles 100% of one-stop traffic on this route.
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.
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 September. Fares historically average $707 round-trip in that month - typically $595 less than the most expensive month, which is January (based on the last 12 months).

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BOS - YQY

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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

How much is a round-trip flight from Boston to Sydney?

Which airline is the cheapest to fly 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

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