The cheapest times to fly from BOS to SYD are

  • January 22nd to March 25th
  • April 23rd to June 3rd
  • August 27th to September 16th
  • October 15th to December 9th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from BOS to SYD is mid February. Prices can be as high as $2307 for Saturday flights during mid December, or as low as $1129 for Tuesday flights around mid February.


When to Fly to Sydney

Flying from Boston, MA (BOS) to Sydney (SYD) will usually cost between $1142 to $1827 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid February with an average ticket price of $1147. Due to high demand the most expensive time to fly is mid December, with an average price of $2110. Planning your trip to low-cost times can easily save you $963 on economy flights and even more on first-class flights. Generally, any price below $1313 can be considered a good price for a round-trip BOS to SYD flight.

See below for a graph of average weekly prices for the BOS to SYD route. All prices are for round-trip tickets in USD.

BOS to SYD Flight Prices

Compared to other flights, the BOS to SYD flight is slightly more expensive than the average and costs slightly more than the average flight leaving from Boston. The average price per mile (for a direct flight) is $0.08, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly to Sydney, and Fridays are the most expensive days to return to Boston. Selecting flights on the least expensive days could save you up to $105 (7%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1306. Return trip prices are from the SYD to BOS flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from BOS to SYD can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 19 hour 9 minutes may not be realistic.


Flight Hacking BOS to SYD

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from BOS to SYD — but Champion Traveler does!

Hack #1: Beijing (BOS > PEK > SYD)

  • Price for both tickets: $1162
  • Average savings: $151 (11.47%)

See BOS to PEK flights

Hack #2: Shanghai (BOS > PVG > SYD)

  • Price for both tickets: $1173
  • Average savings: $140 (10.63%)

See BOS to PVG flights

Hack #3: Los Angeles, CA (BOS > LAX > SYD)

  • Price for both tickets: $1186
  • Average savings: $127 (9.68%)

See BOS to LAX flights


Flight Questions Answered

Still have questions about flying from BOS to SYD? We’ve got answers.

Which airlines fly this route?

You can find 30 major airlines flying this route most often: Air Canada, Air China, Air New Zealand, Air Tahiti Nui, Alaska, American, ANA, Asiana, Austrian, British Airways, Cathay Pacific, China Airlines, China Eastern, China Southern, Delta, Emirates, Etihad, Fiji Airways, Hawaiian, JAL, JetBlue, Korean Air, LATAM, Qantas, Qatar Airways, United, Virgin Atlantic, Virgin Australia, WestJet, Xiamen, and potentially more during busy seasons.

How far away is it from Sydney International Airport to Logan International Airport?

The distance between the two airports is roughly 10096 miles or 16248 kilometers.

How long does it take to fly from BOS to SYD?

The real-world flight time for a nonstop BOS to SYD flight is about 19 hour 9 minutes.

How many flights go between Boston, MA and Sydney?

It depends on the day of the week and the date, but a typical day might have around 94 available flights from BOS to SYD.


Airport Location Info


Departing Airport

Origination code BOS
Origination airport name Logan International Airport
City Boston, MA
Country the United States
Latitude 42.4
Longitude -71

Return Airport

Destination code SYD
Destination airport name Sydney International Airport
City Sydney
Country Australia
Latitude -33.9
Longitude 151.2


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.