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$1,122+ Cheap flights from Buffalo (BUF) to Sydney (SYD)

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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SYD
Aug 16 — Aug 231
Sun 8/16
Sun 8/23
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 July 17, 2026.

This Trip.com deal was found by Cheapflights users on 7/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2911:36 am
BUF
-
SYD
3 stops34h 14m
Multiple Airlines
Sat 9/51:15 pm
SYD
-
BUF
3 stops35h 14m
Multiple Airlines
Deal found 7/15$1,122
This United Airlines deal was found by Cheapflights users on 7/15. 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.
Sat 8/298:55 am
BUF
-
SYD
2 stops32h 05m
United Airlines
Sat 9/510:20 am
SYD
-
BUF
2 stops24h 47m
United Airlines
Deal found 7/15$1,291
This United Airlines deal was found by Cheapflights users on 7/17. 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.
Sun 10/117:00 am
BUF
-
SYD
2 stops33h 55m
United Airlines
Mon 11/211:50 am
SYD
-
BUF
2 stops23h 01m
United Airlines
Deal found 7/17$1,312
This Delta deal was found by Cheapflights users on 7/17. 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 10/127:43 pm
BUF
-
SYD
2 stops45h 07m
Delta
Mon 11/210:40 am
SYD
-
BUF
2 stops29h 10m
Delta
Deal found 7/17$1,329
This Delta deal was found by Cheapflights users on 7/17. 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.
Fri 10/167:40 pm
BUF
-
SYD
2 stops69h 10m
Delta
Wed 11/410:40 am
SYD
-
BUF
2 stops27h 59m
Delta
Deal found 7/17$1,330
This American Airlines deal was found by Cheapflights users on 7/15. 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.
Sat 8/294:50 pm
BUF
-
SYD
1 stop24h 05m
American Airlines
Sat 9/59:10 am
SYD
-
BUF
2 stops28h 52m
American Airlines
Deal found 7/15$1,347
This Qantas Airways deal was found by Cheapflights users on 7/13. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:48 pm
BUF
-
SYD
1 stop23h 07m
Multiple Airlines
Tue 11/172:05 pm
SYD
-
BUF
1 stop24h 36m
Multiple Airlines
Deal found 7/13$1,353
This American Airlines deal was found by Cheapflights users on 7/17. 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.
Wed 10/144:48 pm
BUF
-
SYD
1 stop23h 07m
American Airlines
Thu 11/52:05 pm
SYD
-
BUF
1 stop24h 36m
American Airlines
Deal found 7/17$1,354
This Delta deal was found by Cheapflights users on 7/14. 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 11/281:15 pm
BUF
-
SYD
2 stops27h 15m
Delta
Wed 12/910:40 am
SYD
-
BUF
2 stops24h 18m
Delta
Deal found 7/14$1,361
This United Airlines deal was found by Cheapflights users on 7/17. 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.
Sun 10/117:00 am
BUF
-
SYD
2 stops33h 55m
United Airlines
Sat 11/711:50 am
SYD
-
BUF
2 stops25h 06m
United Airlines
Deal found 7/17$1,362

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 July 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,122
(Trip.com)

Popular in

May

Cheapest in

February

Average price

$1,260
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. 6% potential increase in price ($85 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 17, 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

Sat 8/29

11:36 am-11:50 am

3 stops34h 14m

Sydney Kingsford Smith

Sat 9/5

1:15 pm-10:29 am

3 stops35h 14m

$1,122

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sat 8/29

6:55 am-7:00 am

3 stops34h 05m

Sydney Kingsford Smith

Sat 9/5

10:20 am-9:07 pm

2 stops24h 47m

$1,291

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sat 8/29

4:50 pm-6:55 am

1 stop24h 05m

Sydney Kingsford Smith

Sat 9/5

9:10 am-12:02 am

2 stops28h 52m

$1,347
Quickest round-trip

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Fri 10/30

4:48 pm-6:55 am

1 stop23h 07m

Sydney Kingsford Smith

Tue 11/17

2:05 pm-10:41 pm

1 stop24h 36m

$1,353

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Fri 10/30

4:48 pm-6:55 am

1 stop23h 07m

Sydney Kingsford Smith

Tue 11/17

11:20 am-10:41 pm

2 stops27h 21m

$1,357

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/15

Sorted by cheapest first

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 July.
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 May is currently the most expensive (average of $1,648). 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 July 17, 2026.
See what other customers who have flown with United Airlines and 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.
United Airlines
7.4
Good
9,997 reviews

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
United Airlines
7.4
Good
9,997 reviews
United Airlines
7.4
Good
9,997 reviews

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
American Airlines
7.1
Good
11,818 reviews
United Airlines
7.4
Good
9,997 reviews

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this

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 24h 05m. Fly via United Airlines or American Airlines to get the fastest option. There are 9700 mi between Buffalo and Sydney. This flight may include one or multiple stops.

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

    Flying on United Airlines is currently your cheapest option to Sydney, with prices starting at $800. Another option worth looking into is American Airlines, starting at $1,165 round trip. These flights start at 39% 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 May is currently the most expensive (average of $1,648). 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.
John F Kennedy Intl to Sydney flights
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Syracuse to Sydney flights
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Ithaca to Sydney flights

Top 2 airlines flying from Buffalo to Sydney

Discover the top 2 airlines 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 July 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$800Average$1,295FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,165Average$1,438FlexibilityNo cancel feeOn-time71%

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