Question 1

What’s the top stopover airport for flights from Boston to Sydney?

Accepted Answer

Los Angeles (LAX) – chosen by Cheapflights users on 44% of one-stop itineraries from Boston to Sydney on Cheapflights. Find deals

Question 2

What’s the fastest stopover option from Boston to Sydney?

Accepted Answer

Flights via San Francisco (SFO) have the shortest average one-way travel time for one-stop routes: 23h 11m. Find deals

Question 3

Which airport typically offers the quickest stopover for flights from Boston to Sydney?

Accepted Answer

Flights via San Francisco (SFO) offer the fastest connection on this route, with an average stopover time of 1h 31m. Find deals

Question 4

What’s the cheapest stopover airport for flights from Boston to Sydney?

Accepted Answer

San Francisco (SFO) is the most affordable one-stop option, with an average return flight price of $1,599. Find deals

Question 5

What are the cheapest airlines flying from Boston to Sydney round-trip?

Accepted Answer

Flying on Air Canada is currently your cheapest option to Sydney, with prices starting at $1,296. Additional round-trip tickets that might be worth considering are offered by Qantas Airways and United Airlines, with the lowest prices starting at $1,659 and $1,718, respectively. Air Canada is 41% cheaper than the average price of flights available within the next 90 days to this destination.

Question 6

What are the cheapest airlines to fly from Boston to Sydney one-way?

Accepted Answer

For one-way options, check prices for Air Canada. According to our data, you can fly for as low as $905. Users have also found prices from $961 and $968 on Qantas Airways and United Airlines, respectively.

Question 7

How far ahead should I book a flight from Boston to Sydney?

Accepted Answer

The best time to book flights from Boston to Sydney is 38 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Question 8

What is the cheapest month to book a flight from Boston to Sydney?

Accepted Answer

Currently, May is the cheapest month in which you can book a flight from Boston to Sydney (average of $129). Flying from Boston to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 9

What is the cheapest day to fly from Boston to Sydney?

Accepted Answer

Travellers seeking maximum savings on their Boston to Sydney flight should consider departing on Wednesday at midday when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 10

E

Accepted Answer

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

Question 11

E

Accepted Answer

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

Question 12

What are the most popular airlines that fly from Boston to Sydney?

Accepted Answer

The most popular airlines flying from Boston to Sydney are Air Canada, Qantas Airways and United Airlines. Something to consider prior to booking your flight.

Question 13

What is the cheapest day to fly return from Boston to Sydney?

Accepted Answer

Thursday flights are found to be more expensive to fly from Boston to Sydney. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Sydney.

Question 14

How far in advance should I book a flight from Boston to Sydney?

Accepted Answer

To save on the cost of your flight from Boston to Sydney, book at least 39 days before your planned departure. Booking around this time can save you about 70% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $1,748 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $2,184.

Question 15

What is the cheapest month to fly from Boston to Sydney?

Accepted Answer

March is one of the best times of the year to fly to Sydney from Boston. Prices for March average $2,219 per person but you can even find prices for as low as $1,279. The most expensive prices can be found in the month of December. Opting for a March flight can save you 32% on your journey compared to booking in December

Question 16

What is the cheapest time of day to fly from BOS to SYD?

Accepted Answer

One of the essential ways to save on airfare from Boston to Sydney is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 32% on airfare.

Question 17

Can I find deals for flights from Boston to Sydney that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Boston to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 18

How can I find direct flights from Boston to Sydney?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Sydney.

Question 19

Can I find deals for business class flights from Boston to Sydney?

Accepted Answer

Yes. Cheapflights offers flight deals from Boston to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 20

How does Cheapflights help users find flights from Boston to Sydney?

Accepted Answer

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Boston to Sydney. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Question 21

Why should you use Cheapflights to find cheap flight tickets from Boston to Sydney?

Accepted Answer

Cheapflights helps you find that perfect flight to Sydney from Boston by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 22

Can Cheapflights find flights from Boston to Sydney with no change fees?

Accepted Answer

Certainly. Search results for flights to Sydney from Boston shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Question 23

Can Cheapflights notify me if prices for flights from Boston to Sydney become cheaper?

Accepted Answer

Of course! You can now track prices for flights from Boston to Sydney and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

Round-trip from	$1,296
One-way from	$700
Popular in	December
Cheapest in	March
Average price	$2,101

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$1,184	Average$2,467	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest$1,265	Average$1,929	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Qantas Airways	Cheapest$2,155	Average$2,607	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights

Cheap flights from Boston to Sydney from $700

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Boston Logan Intl to Sydney Kingsford Smith are usually found in March or April, booked 38 days in advance, depart on a Tuesday or Saturday and return on a Sunday

Cheap flight deals from Boston to Sydney

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Find flight deals from Boston to Sydney

Cheapest flights from Boston to SydneyExplore the most affordable flight options available from Boston to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 August 2025.

Explore the most affordable flight options available from Boston to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 August 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Boston to Sydney that are best for you.

Best time to book a flight from Boston to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Boston with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Boston to Sydney

How far ahead should I book a flight from Boston to Sydney?

Use this chart to determine the optimal time to book a return flight from Boston to Sydney. Price data was last updated on 25 July 2025.

What is the cheapest month to book a flight from Boston to Sydney?

What is the cheapest time of day to fly from BOS to SYD?

Find hourly flight availability from Boston to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 August 2025.

What’s the top stopover airport for flights from Boston to Sydney?

Share of one-stop return flights from Boston to Sydney chosen by Cheapflights users in the past 12 months, using the same stopover each way.

What’s the cheapest stopover airport for flights from Boston to Sydney?

Average return fare for one-stop flights from Boston to Sydney, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

What’s the fastest stopover option from Boston to Sydney?

Shortest average travel time for one-stop one-way flights from Boston to Sydney, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Which airport typically offers the quickest stopover for flights from Boston to Sydney?

Average stopover duration for one-stop one-way flights from Boston to Sydney, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 1 August 2025.

Check out reviews from past customers who have flown with ANA, Delta, andQantas Airways from Boston to Sydney to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Boston to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Boston to Sydney round-trip?

What are the cheapest airlines to fly from Boston to Sydney one-way?

Can I find deals for flights from Boston to Sydney that include hotel bookings?

How can I find direct flights from Boston to Sydney?

Can I find deals for business class flights from Boston to Sydney?

What is the cheapest month to book a flight from Boston to Sydney?

Travelling to a place near Sydney?

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Top 3 airlines flying from Boston to Sydney

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How does Cheapflights help users find flights from Boston to Sydney?

Why should you use Cheapflights to find cheap flight tickets from Boston to Sydney?

Can Cheapflights find flights from Boston to Sydney with no change fees?

Can Cheapflights notify me if prices for flights from Boston to Sydney become cheaper?

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Cheapest flights from Boston to Sydney
Explore the most affordable flight options available from Boston to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 August 2025.