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$810+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SYD
May 24 — May 311
Sun 5/24
Sun 5/31
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 April 24, 2026.

This United Airlines deal was found by Cheapflights users on 4/23. 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 6/73:00 pm
BUF
-
SYD
2 stops26h 00m
United Airlines
Sun 6/149:30 am
SYD
-
BUF
2 stops25h 33m
United Airlines
Deal found 4/23$1,344
This Delta deal was found by Cheapflights users on 4/23. 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 4/276:05 am
BUF
-
SYD
2 stops34h 45m
Delta
Sun 5/109:15 am
SYD
-
BUF
2 stops28h 44m
Delta
Deal found 4/23$1,345
This United Airlines deal was found by Cheapflights users on 4/23. 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 5/237:00 am
BUF
-
SYD
3 stops34h 00m
United Airlines
Sat 5/309:30 am
SYD
-
BUF
2 stops25h 33m
United Airlines
Deal found 4/23$1,452
This Delta deal was found by Cheapflights users on 4/20. 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 6/46:25 am
BUF
-
SYD
2 stops34h 25m
Delta
Thu 6/119:15 am
SYD
-
BUF
2 stops28h 44m
Delta
Deal found 4/20$1,453
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Sun 6/74:46 pm
BUF
-
SYD
1 stop24h 09m
American Airlines
Sun 6/149:10 am
SYD
-
BUF
2 stops27h 26m
American Airlines
Deal found 4/23$1,570
This SmartFares deal was found by Cheapflights users on 4/21. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:50 am
BUF
-
SYD
2 stops40h 00m
Etihad Airways
Sat 6/279:30 pm
SYD
-
BUF
2 stops40h 18m
Etihad Airways
Deal found 4/21$1,640
This American Airlines deal was found by Cheapflights users on 4/22. 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 6/64:46 pm
BUF
-
SYD
1 stop24h 09m
American Airlines
Sat 6/1312:00 pm
SYD
-
BUF
1 stop24h 36m
American Airlines
Deal found 4/22$1,667
This American Airlines deal was found by Cheapflights users on 4/23. 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 5/231:45 pm
BUF
-
SYD
2 stops27h 20m
American Airlines
Sat 5/3012:00 pm
SYD
-
BUF
1 stop24h 36m
American Airlines
Deal found 4/23$1,670
This Delta deal was found by Cheapflights users on 4/20. 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 12/109:00 am
BUF
-
SYD
2 stops31h 30m
Delta
Tue 1/122:15 pm
SYD
-
BUF
2 stops24h 50m
Delta
Deal found 4/20$1,715
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Tue 6/27:00 am
BUF
-
SYD
3 stops34h 00m
United Airlines
Sat 6/2710:20 am
SYD
-
BUF
2 stops50h 38m
United Airlines
Deal found 4/21$1,780

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 April 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,344
(United Airlines)

One-way from

$810
(United Airlines)

Popular in

April

Cheapest in

February

Average price

$1,919
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
One-way flight from Buffalo to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($250 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 24, 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

Sun 6/7

3:00 pm-7:00 am

2 stops26h 00m

Sydney Kingsford Smith

Sun 6/14

9:30 am-9:03 pm

2 stops25h 33m

$1,344

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sat 6/6

1:54 pm-7:00 am

2 stops27h 06m

Sydney Kingsford Smith

Sat 6/13

9:30 am-9:51 am

2 stops38h 21m

$1,452

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sat 5/23

7:00 am-7:00 am

3 stops34h 00m

Sydney Kingsford Smith

Sat 5/30

9:30 am-9:03 pm

2 stops25h 33m

$1,452

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Thu 6/4

6:25 am-6:50 am

2 stops34h 25m

Sydney Kingsford Smith

Thu 6/11

9:15 am-11:59 pm

2 stops28h 44m

$1,453

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Thu 5/21

1:54 pm-6:55 am

2 stops27h 01m

Sydney Kingsford Smith

Thu 5/28

10:20 am-7:03 pm

2 stops22h 43m

$1,453

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sun 6/7

4:46 pm-6:55 am

1 stop24h 09m

Sydney Kingsford Smith

Sun 6/14

9:10 am-10:36 pm

2 stops27h 26m

$1,570

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Tue 6/2

10:50 am-4:50 pm

2 stops40h 00m

Sydney Kingsford Smith

Sat 6/27

9:30 pm-11:48 pm

2 stops40h 18m

$1,640

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Tue 6/2

7:00 am-7:00 am

3 stops34h 00m

Sydney Kingsford Smith

Sat 6/27

10:20 am-10:58 pm

2 stops50h 38m

$1,780

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sun 5/10

11:02 am-6:55 am

3 stops29h 53m

Sydney Kingsford Smith

Sat 5/16

10:20 am-9:01 pm

2 stops24h 41m

$2,366
Quickest round-trip

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Thu 6/4

4:46 pm-6:55 am

1 stop24h 09m

Sydney Kingsford Smith

Thu 6/11

12:00 pm-10:36 pm

1 stop24h 36m

$2,724

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 14 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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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 April is currently the most expensive (average of $1,919). 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 April 24, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican 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.
Delta
7.9
Good
8,450 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
Delta
7.9
Good
8,450 reviews
Delta
7.9
Good
8,450 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
United Airlines
7.4
Good
9,643 reviews
Delta
7.9
Good
8,450 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
American Airlines
7.1
Good
11,666 reviews
Delta
7.9
Good
8,450 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

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 United Airlines or Delta 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 Delta is currently your cheapest option to Sydney, with prices starting at $256. Additional round-trip tickets that might be worth considering are offered by United Airlines and American Airlines, with the lowest prices starting at $853 and $1,165, respectively. These flights start at 81% 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 April is currently the most expensive (average of $1,919). 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

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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
Newark to Sydney flights
Syracuse to Sydney flights
Rochester to Sydney flights
Ithaca to Sydney flights

Top 3 airlines flying from Buffalo to Sydney

Discover the top 3 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 April 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$256Average$1,426FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$853Average$1,495FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,165Average$1,439FlexibilityNo cancel feeOn-time71%

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