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$1,439+ 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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SYD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap 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 September 11, 2025.

Round-trip from

$1,439
(American Airlines)

Popular in

April

Cheapest in

November

Average price

$1,438
From Buffalo to Sydney Kingsford Smith
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Highest demand for flights based on searches. 7% potential increase in price ($126 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/11. 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 10/265:27 pmBUF - SYD
2 stops24h 33mAmerican Airlines
Sun 11/211:20 amSYD - BUF
2 stops28h 16mAmerican Airlines
Deal found 9/11$1,439
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/256:02 pmBUF - SYD
2 stops23h 58mAmerican Airlines
Sat 11/111:20 amSYD - BUF
2 stops26h 23mAmerican Airlines
Deal found 9/9$1,440
This United Airlines deal was found by Cheapflights users on 9/11. 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 9/118:00 pmBUF - SYD
2 stops45h 00mUnited Airlines
Fri 10/39:30 amSYD - BUF
3 stops25h 43mUnited Airlines
Deal found 9/11$1,457
This American Airlines deal was found by Cheapflights users on 9/11. 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 9/117:29 pmBUF - SYD
2 stops45h 36mAmerican Airlines
Fri 10/312:10 pmSYD - BUF
1 stop24h 58mAmerican Airlines
Deal found 9/11$1,460
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/810:28 amBUF - SYD
2 stops30h 32mUnited Airlines
Sat 11/112:10 pmSYD - BUF
2 stops37h 53mUnited Airlines
Deal found 9/10$1,586
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Tue 10/711:35 amBUF - SYD
2 stops27h 30mAmerican Airlines
Fri 10/3111:20 amSYD - BUF
2 stops24h 27mAmerican Airlines
Deal found 9/10$1,590
This Delta deal was found by Cheapflights users on 9/10. 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.
Tue 10/77:30 pmBUF - SYD
2 stops45h 05mDelta
Sun 11/210:40 amSYD - BUF
2 stops28h 59mDelta
Deal found 9/10$1,686
This Trip.com deal was found by Cheapflights users on 9/11. 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.
Sun 10/2610:05 amBUF - SYD
3 stops42h 15mTurkish Airlines
Sun 11/29:15 pmSYD - BUF
3 stops40h 45mTurkish Airlines
Deal found 9/11$1,893
This American Airlines deal was found by Cheapflights users on 9/10. 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 12/2812:34 pmBUF - SYD
2 stops28h 26mAmerican Airlines
Sun 1/1111:15 amSYD - BUF
2 stops27h 11mAmerican Airlines
Deal found 9/10$1,899

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 September 11, 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

Sun 10/26

4:11 pm-9:00 am

2 stops25h 49m

Sydney Kingsford Smith

Sun 11/2

2:05 pm-11:41 pm

1 stop24h 36m

$1,440

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Wed 10/8

10:28 am-8:00 am

2 stops30h 32m

Sydney Kingsford Smith

Fri 10/31

10:20 am-6:46 pm

2 stops23h 26m

$1,586

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Wed 10/8

10:28 am-8:00 am

2 stops30h 32m

Sydney Kingsford Smith

Sat 11/1

12:10 pm-11:03 am

2 stops37h 53m

$1,586

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Wed 10/8

10:28 am-8:00 am

2 stops30h 32m

Sydney Kingsford Smith

Wed 10/29

12:10 pm-9:00 pm

2 stops23h 50m

$1,586

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sat 1/10

2:49 pm-6:20 am

2 stops47h 31m

Sydney Kingsford Smith

Sun 1/25

11:20 am-8:41 pm

2 stops25h 21m

$1,588

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Tue 10/7

11:35 am-6:05 am

2 stops27h 30m

Sydney Kingsford Smith

Fri 10/31

11:20 am-8:47 pm

2 stops24h 27m

$1,590

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Sat 10/25

6:02 pm-9:00 am

2 stops23h 58m

Sydney Kingsford Smith

Sat 11/1

1:05 pm-10:43 pm

1 stop24h 38m

$1,591

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Tue 10/7

7:30 pm-7:35 am

2 stops45h 05m

Sydney Kingsford Smith

Sun 11/2

10:40 am-12:39 am

2 stops28h 59m

$1,686

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Tue 10/7

7:30 pm-7:35 am

2 stops45h 05m

Sydney Kingsford Smith

Sat 11/1

9:40 am-11:39 pm

2 stops28h 59m

$1,686

BuffaloSydney

BUF - SYD

BUFSYD

Buffalo

Tue 10/7

7:30 pm-7:35 am

2 stops45h 05m

Sydney Kingsford Smith

Wed 10/29

9:40 am-11:39 pm

2 stops28h 59m

$1,686

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

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 $1,035). Flying from Buffalo to Sydney in December is currently the most expensive (average of $1,626). 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 September 11, 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 56% on your trip compared to booking a flight in the morning.

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 September 11, 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
8.0
Very good
7,960 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

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
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

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
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

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
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

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 25h 49m. Fly via American Airlines 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 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 $1,165 and $1,193, 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, February is the cheapest month in which you can book a flight from Buffalo to Sydney (average of $1,035). Flying from Buffalo to Sydney in December is currently the most expensive (average of $1,626). 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$276Average$1,871FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$1,165Average$1,523FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$1,193Average$1,560FlexibilityNo cancel feeOn-time69%

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