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$763+ 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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SYD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
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 December 12, 2025.

This Delta deal was found by Cheapflights users on 12/10. 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 12/2812:01 pmBUF - SYD
2 stops26h 49mDelta
Mon 1/122:15 pmSYD - BUF
2 stops24h 42mDelta
Deal found 12/10$1,868
This United Airlines deal was found by Cheapflights users on 12/10. 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 12/281:59 pmBUF - SYD
2 stops25h 01mUnited Airlines
Sun 1/1112:10 pmSYD - BUF
2 stops42h 04mUnited Airlines
Deal found 12/10$2,043
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Fri 12/121:50 pmBUF - SYD
2 stops25h 10mUnited Airlines
Sun 12/212:00 pmSYD - BUF
2 stops24h 55mUnited Airlines
Deal found 12/10$2,268
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Fri 12/121:50 pmBUF - SYD
2 stops27h 25mUnited Airlines
Sat 12/2012:10 pmSYD - BUF
2 stops24h 44mUnited Airlines
Deal found 12/10$2,318
This American Airlines deal was found by Cheapflights users on 12/10. 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.
Fri 12/122:50 pmBUF - SYD
2 stops26h 10mAmerican Airlines
Sun 12/212:05 pmSYD - BUF
1 stop24h 24mAmerican Airlines
Deal found 12/10$2,752
This Expedia deal was found by Cheapflights users on 12/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/146:05 amBUF - SYD
2 stops43h 50mMultiple Airlines
Tue 12/169:30 pmSYD - BUF
2 stops52h 49mMultiple Airlines
Deal found 12/10$2,839
This Cathay Pacific deal was found by Cheapflights users on 12/10. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:14 amBUF - SYD
2 stops33h 46mMultiple Airlines
Sun 12/213:00 pmSYD - BUF
3 stops42h 48mMultiple Airlines
Deal found 12/10$2,929
This Cathay Pacific deal was found by Cheapflights users on 12/10. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:14 amBUF - SYD
2 stops33h 46mMultiple Airlines
Sat 12/2010:05 amSYD - BUF
3 stops47h 43mMultiple Airlines
Deal found 12/10$2,978
This Expedia deal was found by Cheapflights users on 12/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/133:32 pmBUF - SYD
2 stops35h 18mMultiple Airlines
Mon 12/159:40 pmSYD - BUF
2 stops53h 54mMultiple Airlines
Deal found 12/9$3,183
This American Airlines deal was found by Cheapflights users on 12/10. 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 12/286:24 amBUF - SYD
1 stop32h 31mAmerican Airlines
Sun 1/1111:20 amSYD - BUF
2 stops25h 46mAmerican Airlines
Deal found 12/10$3,301

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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,197
(American Airlines)

One-way from

$763
(Delta)

Popular in

February

Cheapest in

December

Average price

$1,295
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. 9% potential increase in price ($166 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 12, 2025.
Use the filters below to find and compare flights from Buffalo to Sydney that are best for you.

Fly from

Buffalo

Fly to

Sydney

Route

Depart

Return

Price

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Mon 2/9

12:58 pm-9:00 am

2 stops28h 02m

Sydney Kingsford Smith

Sun 2/22

2:05 pm-10:34 pm

1 stop24h 29m

$1,201

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Thu 1/15

8:30 am-9:05 am

2 stops32h 35m

Sydney Kingsford Smith

Fri 1/30

2:00 pm-2:14 pm

2 stops40h 14m

$1,397

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sun 1/25

10:33 am-8:30 am

2 stops29h 57m

Sydney Kingsford Smith

Sun 2/1

10:40 am-10:57 pm

2 stops28h 17m

$1,590

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sun 1/25

1:59 pm-7:00 am

2 stops25h 01m

Sydney Kingsford Smith

Sun 2/1

11:20 am-8:29 pm

2 stops25h 09m

$1,713

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sat 2/7

8:30 am-9:35 am

3 stops57h 05m

Sydney Kingsford Smith

Wed 2/11

11:20 am-8:29 pm

2 stops25h 09m

$1,773

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sun 1/11

7:30 am-12:00 pm

2 stops36h 30m

Sydney Kingsford Smith

Sun 1/25

10:20 pm-11:48 pm

2 stops41h 28m

$1,848

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sun 12/28

12:01 pm-6:50 am

2 stops26h 49m

Sydney Kingsford Smith

Mon 1/12

2:15 pm-10:57 pm

2 stops24h 42m

$1,868

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sun 1/25

6:03 am-8:30 am

2 stops34h 27m

$763

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sun 1/25

11:27 am-5:50 pm

3 stops38h 23m

$1,186

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sun 1/25

6:53 am-6:55 am

1 stop32h 02m

$6,007

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Buffalo-Sydney flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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, August is the cheapest month in which you can book a flight from Buffalo to Sydney (average of $276). Flying from Buffalo to Sydney in May is currently the most expensive (average of $1,594). 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.

What is the cheapest time of day to fly from BUF to SYD?

Find hourly flight availability from Buffalo to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Buffalo to Sydney in the evening. If you’re flexible enough to do this you can expect to save up to 55% on your trip compared to booking a flight in the morning.

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 December 12, 2025.
See what other customers who have flown with Delta, 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.
Delta
7.9
Good
8,008 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.1

Overall

7.9

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
8,008 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.1

Overall

7.9

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
9,095 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.1

Overall

7.9

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
7.2
Good
11,050 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.1

Overall

7.9

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 28h 02m. Fly via American Airlines, 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 $276. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $1,166 and $1,295, respectively. These flights start at 82% 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, August is the cheapest month in which you can book a flight from Buffalo to Sydney (average of $276). Flying from Buffalo to Sydney in May is currently the most expensive (average of $1,594). 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
Manly
Coogee

Browse thousands of different options on Cheapflights for your next trip

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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$276Average$1,919FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$1,166Average$1,595FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$1,295Average$1,658FlexibilityNo cancel feeOn-time69%

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