$417+ Cheap flights from Boston (BOS) to Sydney, NS (YQY)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YQY
Nov 8 — Nov 151
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Sydney with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Boston to Sydney
Cheapest
Best
Last-minute
One-way
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 October 9, 2026.
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 October 9, 2026.
This Air Canada deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:15 am -
2 stops12h 11m
Mon 11/912:10 pm -
1 stop6h 48m
Deal found 10/7![Air Canada logo]()
$749
This Air Canada deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:40 pm -
1 stop14h 50m
Tue 11/1012:10 pm -
1 stop6h 48m
Deal found 10/7![Air Canada logo]()
$769
This Air Canada deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/223:10 pm -
2 stops8h 31m
Sun 11/296:05 am -
1 stop4h 43m
Deal found 10/8![Air Canada logo]()
$867
This Air Canada deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:05 pm -
1 stop6h 36m
Tue 10/276:10 am -
2 stops12h 48m
Deal found 10/7![Air Canada logo]()
$1,029
Best flights from Boston to SydneyDiscover carefully curated flight deals from Boston to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.
Discover carefully curated flight deals from Boston to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.
This Air Canada deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:40 pm -
1 stop14h 50m
Tue 11/1012:10 pm -
1 stop6h 48m
Deal found 10/7![Air Canada logo]()
$769
This Air Canada deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:05 pm -
1 stop6h 36m
Tue 10/276:10 am -
2 stops12h 48m
Deal found 10/7![Air Canada logo]()
$1,029
This Air Canada deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/306:35 pm -
1 stop4h 50m
Wed 3/315:45 am -
1 stop5h 17m
Deal found 10/4![Air Canada logo]()
$1,032
Last-minute flights from Boston to SydneyDiscover last-minute flight deals from Boston to Sydney. Data last updated October 9, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Sydney. Data last updated October 9, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:05 pm -
1 stop6h 36m
Tue 10/276:10 am -
2 stops12h 48m
Deal found 10/7![Air Canada logo]()
$1,029
This Air Canada deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:40 pm -
1 stop14h 50m
Tue 11/1012:10 pm -
1 stop6h 48m
Deal found 10/7![Air Canada logo]()
$769
This Air Canada deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:15 am -
2 stops12h 11m
Mon 11/912:10 pm -
1 stop6h 48m
Deal found 10/7![Air Canada logo]()
$749
This Air Canada deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/223:10 pm -
2 stops8h 31m
Sun 11/296:05 am -
1 stop4h 43m
Deal found 10/8![Air Canada logo]()
$867
One-way flights from Boston to SydneySearch for one-way flight options from Boston to Sydney. Find affordable one-way fares based on user searches. Data last updated October 9, 2026.
Search for one-way flight options from Boston to Sydney. Find affordable one-way fares based on user searches. Data last updated October 9, 2026.
This Air Canada deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:45 pm -
2 stops8h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Air Canada logo]()
$417
This Air Canada deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:45 pm -
2 stops19h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Air Canada logo]()
$529
Find flight deals from Boston to Sydney
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Sydney (YQY). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $749 (Air Canada) |
One-way from | $417 (Air Canada) |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 9, 2026.
Use the filters below to find and compare flights from Boston to Sydney that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BostonSydney
BOS Boston Logan Intl - YQY Sydney
BOSYQY
Boston Logan Intl
Wed 12/2
2:45 pm-12:26 am
2 stops8h 41m
Sydney
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$417
BostonSydney
BOS Boston Logan Intl - YQY Sydney
BOSYQY
Boston Logan Intl
Tue 12/1
2:45 pm-12:26 am
2 stops8h 41m
Sydney
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$417
BostonSydney
BOS Boston Logan Intl - YQY Sydney
BOSYQY
Boston Logan Intl
Thu 10/22
7:45 pm-4:38 pm
2 stops19h 53m
Sydney
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$529
BostonSydney
BOS Boston Logan Intl - YQY Sydney
BOSYQY
Boston Logan Intl
Thu 11/5
7:40 pm-11:30 am
1 stop14h 50m
Sydney
Tue 11/10
12:10 pm-5:58 pm
1 stop6h 48m
$769
BostonSydney
BOS Boston Logan Intl - YQY Sydney
BOSYQY
Boston Logan Intl
Sat 10/24
5:05 pm-12:41 am
1 stop6h 36m
Sydney
Tue 10/27
6:10 am-5:58 pm
2 stops12h 48m
$1,029
BostonSydney
BOS Boston Logan Intl - YQY Sydney
BOSYQY
Boston Logan Intl
Tue 3/30
6:35 pm-12:25 am
1 stop4h 50m
Sydney
Wed 3/31
5:45 am-10:02 am
1 stop5h 17m
$1,032
Sorted by cheapest first
Compare providers for flights from Boston to Sydney
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Sydney in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boston-Sydney, Nova Scotia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Sydney, Nova Scotia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Sydney, Nova Scotia flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-Sydney, Nova Scotia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Sydney, Nova Scotia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
BOS-YQY
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
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 October 9, 2026.
Read reviews from past customers who have flown Air Canada from Boston to Sydney. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.1
Crew
7.8
Boarding
7.3
Entertainment
6.8
Comfort
7.1
Food
6.3
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
PDX - YVR
Overall
7.1
Crew
7.8
Boarding
7.3
Entertainment
6.8
Comfort
7.1
Food
6.3
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
PDX - YVR
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.
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Complete your trip
Complete your trip to Sydney by adding a car rental and/or hotel reservation to your travel itinerary.
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Boston and Sydney flights
Browse other Boston and Sydney flight options. Last updated on October 9, 2026.
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Popular flight searches
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Top airline flying from Boston to Sydney
Discover the top airline that operate flights from Boston to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$707 | Average$800 | FlexibilityNo cancel fee | On-time67% |