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$592+ Cheap flights from Louisville (SDF) 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SYD
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from Louisville to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) 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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,310
(Delta)

One-way from

$592
(United Airlines)

Popular in

December

Cheapest in

April

Average price

$1,337
Provider with most accurate pricing for Louisville Intl-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Louisville Intl-Sydney Kingsford Smith flights.
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From Louisville Intl to Sydney Kingsford Smith
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One-way flight from Louisville Intl to Sydney Kingsford Smith
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Highest demand for flights based on searches. 13% potential increase in price ($212 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Louisville to Sydney

Cheapest flights from Louisville to Sydney
Explore the most affordable flight options available from Louisville to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Delta deal was found by Cheapflights users on 10/28. 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 11/1310:37 amSDF - SYD
2 stops29h 53mDelta
Mon 11/1710:40 amSYD - SDF
2 stops22h 36mDelta
Deal found 10/28$1,310
This United Airlines deal was found by Cheapflights users on 10/28. 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 11/138:00 amSDF - SYD
2 stops33h 15mUnited Airlines
Mon 11/1711:50 amSYD - SDF
1 stop24h 04mUnited Airlines
Deal found 10/28$1,313
This United Airlines deal was found by Cheapflights users on 10/27. 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 12/61:50 pmSDF - SYD
2 stops27h 25mUnited Airlines
Sat 12/2011:50 amSYD - SDF
1 stop26h 04mUnited Airlines
Deal found 10/27$1,487
This Air New Zealand deal was found by Cheapflights users on 10/27. 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 Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/273:35 pmSDF - SYD
2 stops26h 10mMultiple Airlines
Tue 11/49:55 amSYD - SDF
3 stops28h 34mMultiple Airlines
Deal found 10/27$1,907
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Mon 10/273:35 pmSDF - SYD
2 stops26h 30mUnited Airlines
Tue 11/411:50 amSYD - SDF
1 stop24h 04mUnited Airlines
Deal found 10/27$2,112
This Qantas Airways deal was found by Cheapflights users on 10/27. 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.
Sat 12/610:47 amSDF - SYD
3 stops28h 38mMultiple Airlines
Sat 12/207:05 amSYD - SDF
2 stops22h 11mMultiple Airlines
Deal found 10/27$2,525
This FlightHub deal was found by Cheapflights users on 10/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/64:30 pmSDF - SYD
1 stop22h 25mQantas Airways
Sat 12/202:05 pmSYD - SDF
1 stop19h 26mQantas Airways
Deal found 10/27$2,595
This Air Canada deal was found by Cheapflights users on 10/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/133:20 pmSDF - SYD
2 stops26h 15mAir Canada
Mon 11/1711:20 amSYD - SDF
3 stops38h 39mAir Canada
Deal found 10/26$3,820

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville 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 October 29, 2025.
Use the filters below to find and compare flights from Louisville to Sydney that are best for you.

Fly from

Louisville

Fly to

Sydney

Route

Depart

Return

Price

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 11/13

10:37 am-8:30 am

2 stops29h 53m

Sydney Kingsford Smith

Mon 11/17

10:40 am-5:16 pm

2 stops22h 36m

$1,310

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

6:00 am-6:05 am

2 stops33h 05m

Sydney Kingsford Smith

Sun 4/5

9:25 am-9:34 am

2 stops38h 09m

$1,310

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 11/13

8:00 am-9:15 am

2 stops33h 15m

Sydney Kingsford Smith

Mon 11/17

11:50 am-7:54 pm

1 stop24h 04m

$1,313

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 12/6

8:35 am-8:30 am

2 stops31h 55m

Sydney Kingsford Smith

Sat 12/20

10:40 am-11:03 pm

2 stops28h 23m

$1,351

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 3/18

6:00 am-7:25 am

2 stops34h 25m

Sydney Kingsford Smith

Sun 4/5

9:25 am-8:52 pm

2 stops25h 27m

$1,352

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

3:50 pm-7:00 am

1 stop24h 10m

Sydney Kingsford Smith

Sun 4/5

9:30 am-9:57 pm

2 stops50h 27m

$1,410

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 3/20

6:27 pm-6:55 am

1 stop21h 28m

Sydney Kingsford Smith

Sun 4/5

12:10 pm-5:24 pm

1 stop19h 14m

$2,070

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 3/18

6:27 pm-6:55 am

1 stop21h 28m

Sydney Kingsford Smith

Sun 4/5

12:10 pm-5:24 pm

1 stop19h 14m

$2,072

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 12/5

8:52 pm-8:15 pm

3 stops55h 23m

$689

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 12/24

8:00 am-9:05 am

2 stops33h 05m

$942

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 13 results
1
2

Compare providers for flights from Louisville 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 Louisville to Sydney in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 Louisville-Sydney flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Louisville-Sydney flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Louisville-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-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 Louisville-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 Louisville to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Louisville 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 Louisville to Sydney

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

Currently, October is the cheapest month in which you can book a flight from Louisville to Sydney (average of $405). Flying from Louisville to Sydney in January is currently the most expensive (average of $1,079). 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 Louisville 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 October 29, 2025.
See what other customers who have flown with Delta and United Airlines from Louisville 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
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,992 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,999 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

Find useful and relevant information for your journey from Louisville 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 Louisville to Sydney?

    Departing from Louisville to Sydney will take you 29h 53m. Louisville and Sydney are separated by a distance of 9288 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Cheapflights users have booked flights from Louisville to Sydney round-trip from $930. Another airline that can offer you cheap pricing is Delta. United Airlines is currently priced 30% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Louisville 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 Louisville to Sydney?

    Currently, October is the cheapest month in which you can book a flight from Louisville to Sydney (average of $405). Flying from Louisville to Sydney in January is currently the most expensive (average of $1,079). 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 2 airlines flying from Louisville to Sydney

Discover the top 2 airlines that operate flights from Louisville 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$930Average$1,230FlexibilityNo cancel feeOn-time69%
DeltaCheapest$979Average$1,338FlexibilityNo cancel feeOn-timeN/A

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