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$848+ Cheap flights from Buffalo (BUF) to Sydney (SYD)

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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SYD
Jul 10 — Jul 171
Fri 7/10
Fri 7/17
1 adult, Economy
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Cheap flight deals from Buffalo to Sydney

Cheapest flights from Buffalo to Sydney
Explore the most affordable flight options available from Buffalo to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 10, 2026.

This United Airlines deal was found by Cheapflights users on 6/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2910:57 am
BUF
-
SYD
2 stops29h 58m
United Airlines
Sun 8/3010:20 am
SYD
-
BUF
2 stops24h 51m
United Airlines
Deal found 6/7$1,147
This Delta deal was found by Cheapflights users on 6/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:36 pm
BUF
-
SYD
2 stops45h 14m
Delta
Sun 8/309:15 am
SYD
-
BUF
2 stops29h 25m
Delta
Deal found 6/7$1,148
This Delta deal was found by Cheapflights users on 6/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/296:29 am
BUF
-
SYD
2 stops34h 21m
Delta
Mon 7/69:15 am
SYD
-
BUF
2 stops36h 59m
Delta
Deal found 6/9$1,164
This United Airlines deal was found by Cheapflights users on 6/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/291:54 pm
BUF
-
SYD
2 stops27h 06m
United Airlines
Thu 9/39:30 am
SYD
-
BUF
2 stops23h 28m
United Airlines
Deal found 6/7$1,198
This American Airlines deal was found by Cheapflights users on 6/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/84:55 pm
BUF
-
SYD
2 stops24h 00m
American Airlines
Thu 7/29:10 am
SYD
-
BUF
2 stops26h 45m
American Airlines
Deal found 6/7$1,210
This Delta deal was found by Cheapflights users on 6/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:29 am
BUF
-
SYD
2 stops34h 21m
Delta
Wed 8/59:15 am
SYD
-
BUF
2 stops29h 25m
Delta
Deal found 6/8$1,214
This United Airlines deal was found by Cheapflights users on 6/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/301:54 pm
BUF
-
SYD
2 stops27h 06m
United Airlines
Thu 9/39:30 am
SYD
-
BUF
2 stops25h 37m
United Airlines
Deal found 6/7$1,247
This American Airlines deal was found by Cheapflights users on 6/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/301:47 pm
BUF
-
SYD
2 stops27h 43m
American Airlines
Fri 8/149:10 am
SYD
-
BUF
2 stops27h 51m
American Airlines
Deal found 6/7$1,260
This Delta deal was found by Cheapflights users on 6/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:29 am
BUF
-
SYD
2 stops34h 21m
Delta
Sat 7/189:15 am
SYD
-
BUF
2 stops28h 27m
Delta
Deal found 6/9$1,263
This Delta deal was found by Cheapflights users on 6/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:00 am
BUF
-
SYD
2 stops34h 50m
Delta
Wed 9/29:15 am
SYD
-
BUF
2 stops29h 25m
Delta
Deal found 6/7$1,298
This United Airlines deal was found by Cheapflights users on 6/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/291:54 pm
BUF
-
SYD
2 stops27h 06m
United Airlines
Tue 9/19:30 am
SYD
-
BUF
2 stops27h 07m
United Airlines
Deal found 6/7$1,347

Find flight deals from Buffalo to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Sydney (SYD). 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 June 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,147
(United Airlines)

Popular in

September

Cheapest in

February

Average price

$1,165
Provider with most accurate pricing for Buffalo-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Buffalo-Sydney Kingsford Smith flights.
Search Deals
From Buffalo to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($64 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo 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 2,558,603 searches. Data last updated June 10, 2026.
Use the filters below to find and compare flights from Buffalo to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Mon 6/29

6:29 am-6:50 am

2 stops34h 21m

Sydney Kingsford Smith

Mon 7/6

9:15 am-8:14 am

2 stops36h 59m

$1,164

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Thu 7/23

6:29 am-6:50 am

2 stops34h 21m

Sydney Kingsford Smith

Wed 8/5

9:15 am-12:40 am

2 stops29h 25m

$1,214

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Thu 7/30

1:54 pm-7:00 am

2 stops27h 06m

Sydney Kingsford Smith

Fri 9/4

9:30 am-9:07 pm

2 stops25h 37m

$1,247

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sat 7/4

6:29 am-6:50 am

2 stops34h 21m

Sydney Kingsford Smith

Sat 7/18

9:15 am-11:42 pm

2 stops28h 27m

$1,263

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Thu 7/23

1:47 pm-7:05 am

2 stops27h 18m

Sydney Kingsford Smith

Wed 8/5

12:00 pm-11:01 pm

1 stop25h 01m

$1,360

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sat 8/1

7:36 pm-6:50 am

2 stops45h 14m

Sydney Kingsford Smith

Sun 8/30

9:15 am-12:40 am

2 stops29h 25m

$1,392

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Thu 7/30

9:00 am-7:00 am

2 stops32h 00m

Sydney Kingsford Smith

Tue 9/1

9:30 am-10:37 pm

2 stops27h 07m

$1,414

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sun 7/5

7:06 am-6:55 am

2 stops33h 49m

Sydney Kingsford Smith

Sun 7/12

10:20 am-10:00 am

2 stops37h 40m

$1,463
Quickest round-trip

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Fri 10/30

2:46 pm-8:00 am

2 stops26h 14m

Sydney Kingsford Smith

Tue 11/17

2:05 pm-11:43 pm

2 stops25h 38m

$1,509

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Thu 7/30

9:00 am-7:00 am

2 stops32h 00m

Sydney Kingsford Smith

Mon 8/31

9:30 am-10:37 pm

2 stops27h 07m

$1,574

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Compare providers for flights from Buffalo 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 Buffalo to Sydney in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Buffalo-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Buffalo-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Buffalo-Sydney 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 Buffalo-Sydney 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 Buffalo to Sydney

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

Cheapflights Insights

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

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

Currently, February is the cheapest month in which you can book a flight from Buffalo to Sydney (average of $218). Flying from Buffalo to Sydney in September is currently the most expensive (average of $1,512). 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.

How much does it cost to fly round-trip from Buffalo to Sydney?

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 June 10, 2026.
See what other customers who have flown with American Airlines from Buffalo to Sydney have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,636 reviews

Crew

7.9

Boarding

7.5

Overall

7.1

Entertainment

6.9

Food

6.4

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Apr 2026

DFW - BDL

They keep changing the gate, delaying the hours and then finally canceled it. No accomodation, no food, nothing!
American Airlines
7.1
Good
11,636 reviews
American Airlines
7.1
Good
11,636 reviews

Crew

7.9

Boarding

7.5

Overall

7.1

Entertainment

6.9

Food

6.4

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Apr 2026

DFW - BDL

They keep changing the gate, delaying the hours and then finally canceled it. No accomodation, no food, nothing!

Related info for your journey

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

  • How long is the flight from Buffalo to Sydney?

    There are many flights that can get you from Buffalo to Sydney in 27h 06m. Fly via Delta or United Airlines to get the fastest option. There are 9700 mi between Buffalo and Sydney. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Buffalo to Sydney round-trip?

    Flying on American Airlines is currently your cheapest option to Sydney, with prices starting at $1,166. This flight start at 9% lower than the current average price 3 months from now.

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

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

  • How can I find direct flights from Buffalo to Sydney?

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

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

    Yes. Cheapflights offers flight deals from Buffalo 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.

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

    Currently, February is the cheapest month in which you can book a flight from Buffalo to Sydney (average of $218). Flying from Buffalo to Sydney in September is currently the most expensive (average of $1,512). 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.

See more FAQs

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Coogee
Manly

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Buffalo to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Buffalo to Sydney

Discover the top airline that operate flights from Buffalo 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 2,558,603 searches. Data last updated June 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$1,166Average$1,439FlexibilityNo cancel feeOn-time71%

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