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 C$ 1,032 round-trip on average, while Monday is the most expensive at C$ 1,818, a difference of C$ 786. KAYAK's flexible dates feature shows options up to three 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 varied from about C$ 1,207 to C$ 1,965. That means the highest observed fare was about 62% 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 C$ 1,141, which is 141% above the typical average for this route.

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 C$ 1,076 to C$ 1,140, with an average of C$ 1,110 over the past 12 months. Anything below C$ 1,076 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 C$ 1,076 to C$ 1,140. The lowest price found in the past 5 days was C$ 1,207, on Air Canada.

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

Air Canada (C$ 1,207) 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 C$ 1,097. 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 three months.

C$ 919 CHEAP FLIGHTS from Boston to Sydney (BOS - YQY)

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Cheapest round-trip

C$ 1,207

Typical prices: C$ 1,076-C$ 1,140

Air Canada

Fri 30/3Sat 31/3

BOS - YQY • 1 stop

Cheapest one-way flights

C$ 919

Typical prices: C$ 473-C$ 511

Air Canada

Fri 9/11

BOS - YQY • 1 stop

When to travel

September

Cheapest • 11% price drop

May

Most popular

Good to know

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We hope you enjoy your trip to Sydney!

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, 30 Mar - Wed, 31 Mar

6:35 p.m. - 12:25 a.m.BOS Boston Logan Intl-YQY Sydney

4h 50m1 stop Montreal Pierre Elliott Trudeau Intl

5:45 a.m. - 10:02 a.m.YQY Sydney-BOS Boston Logan Intl

5h 17m1 stop Montreal Pierre Elliott Trudeau Intl

C$ 1,207Air Canada

Tue, 30 Mar - Wed, 31 Mar

6:35 p.m. - 12:25 a.m.BOS Boston Logan Intl-YQY Sydney

4h 50m1 stop Montreal Pierre Elliott Trudeau Intl

5:45 a.m. - 2:19 p.m.YQY Sydney-BOS Boston Logan Intl

9h 34m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

C$ 1,218Air Canada

Tue, 30 Mar - Wed, 31 Mar

3:10 p.m. - 12:25 a.m.BOS Boston Logan Intl-YQY Sydney

8h 15m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

5:45 a.m. - 2:19 p.m.YQY Sydney-BOS Boston Logan Intl

9h 34m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

C$ 1,229Air Canada

Thu, 10 Dec - Thu, 17 Dec

6:35 p.m. - 12:15 a.m.BOS Boston Logan Intl-YQY Sydney

4h 40m1 stop Montreal Pierre Elliott Trudeau Intl

5:55 a.m. - 9:48 a.m.YQY Sydney-BOS Boston Logan Intl

4h 53m1 stop Montreal Pierre Elliott Trudeau Intl

C$ 1,286Air Canada

Thu, 10 Dec - Thu, 17 Dec

6:35 p.m. - 12:15 a.m.BOS Boston Logan Intl-YQY Sydney

4h 40m1 stop Montreal Pierre Elliott Trudeau Intl

12:00 p.m. - 9:28 p.m.YQY Sydney-BOS Boston Logan Intl

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

C$ 1,297Air Canada

Thu, 10 Dec - Thu, 17 Dec

11:15 a.m. - 12:15 a.m.BOS Boston Logan Intl-YQY Sydney

12h 00m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

5:55 a.m. - 5:58 p.m.YQY Sydney-BOS Boston Logan Intl

13h 03m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

C$ 1,342Air Canada

Fri, 27 Nov - Fri, 4 Dec

7:40 p.m. - 11:30 a.m.BOS Boston Logan Intl-YQY Sydney

14h 50m1 stop Toronto Pearson Intl

5:55 a.m. - 9:48 a.m.YQY Sydney-BOS Boston Logan Intl

4h 53m1 stop Montreal Pierre Elliott Trudeau Intl

C$ 1,346Multiple Airlines

Fri, 27 Nov - Fri, 4 Dec

7:40 p.m. - 12:26 a.m.BOS Boston Logan Intl-YQY Sydney

27h 46m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

5:55 a.m. - 9:48 a.m.YQY Sydney-BOS Boston Logan Intl

4h 53m1 stop Montreal Pierre Elliott Trudeau Intl

C$ 1,350Multiple Airlines

Fri, 27 Nov - Fri, 4 Dec

7:40 p.m. - 12:26 a.m.BOS Boston Logan Intl-YQY Sydney

27h 46m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

5:55 a.m. - 9:53 p.m.YQY Sydney-BOS Boston Logan Intl

16h 58m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

C$ 1,364Multiple Airlines

Thu, 12 Nov - Sun, 15 Nov

6:35 p.m. - 12:15 a.m.BOS Boston Logan Intl-YQY Sydney

4h 40m1 stop Montreal Pierre Elliott Trudeau Intl

6:00 a.m. - 10:37 p.m.YQY Sydney-BOS Boston Logan Intl

17h 37m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

C$ 1,389Air 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 march.

Find deals

High season	May
Cheapest flight	C$ 919

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

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.

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 C$ 1,076 to C$ 1,140, with an average of C$ 1,110 over the past 12 months. Anything below C$ 1,076 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 C$ 1,207 to C$ 1,965. That means the highest observed fare was about 62% 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 C$ 1,141, which is 141% 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?
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 C$ 1,032 round-trip on average, while Monday is the most expensive at C$ 1,818, a difference of C$ 786.

KAYAK's flexible dates feature shows options up to three 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 C$ 1,032, about C$ 786 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 C$ 987 round-trip in that month – typically C$ 831 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

Find deals for your return flight