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$929+ Cheap flights from Louisville (SDF) to Australia

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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SYD
ago. 18 — ago. 251
lun. 8/18
lun. 8/25
1 adult, Economy
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Cheap flight deals from Louisville to Australia

Keep the following information in mind while searching for Louisville to Australia flight deals. Data was last updated agosto 13, 2025.

Round-trip from

$929
(United Airlines)

Popular in

December

Cheapest in

April

Average price

$1,237
From Louisville Intl to Australia
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($217 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($56 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
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Find flight deals from Louisville to Australia

Cheapest flights from Louisville to Australia
Explore the most affordable flight options available from Louisville to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 13, 2025.

This United Airlines deal was found by Cheapflights users on 8/12. 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.
sáb. 10/259:40 amSDF - SYD
1 stop30h 20mUnited Airlines
sáb. 11/111:50 amSYD - SDF
1 stop23h 04mUnited Airlines
Deal found 8/12$929
This United Airlines deal was found by Cheapflights users on 8/11. 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.
sáb. 10/41:58 pmSDF - SYD
2 stops27h 02mUnited Airlines
sáb. 10/1110:30 amSYD - SDF
2 stops23h 03mUnited Airlines
Deal found 8/11$933
This United Airlines deal was found by Cheapflights users on 8/10. 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.
vie. 10/37:20 pmSDF - SYD
2 stops45h 40mUnited Airlines
sáb. 10/2511:20 amSYD - SDF
2 stops26h 10mUnited Airlines
Deal found 8/10$947
This United Airlines deal was found by Cheapflights users on 8/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/243:30 pmSDF - SYD
2 stops25h 25mUnited Airlines
jue. 10/3011:50 amSYD - SDF
1 stop23h 04mUnited Airlines
Deal found 8/13$973
This United Airlines deal was found by Cheapflights users on 8/11. 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.
vie. 8/291:59 pmSDF - SYD
2 stops26h 56mUnited Airlines
dom. 9/710:20 amSYD - SDF
2 stops24h 08mUnited Airlines
Deal found 8/11$1,103
This United Airlines deal was found by Cheapflights users on 8/11. 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.
mié. 9/243:30 pmSDF - SYD
2 stops49h 30mUnited Airlines
dom. 10/1211:20 amSYD - SDF
2 stops22h 13mUnited Airlines
Deal found 8/11$1,117
This United Airlines deal was found by Cheapflights users on 8/11. 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.
jue. 11/133:35 pmSDF - SYD
1 stop23h 25mUnited Airlines
lun. 11/1711:50 amSYD - SDF
1 stop26h 07mUnited Airlines
Deal found 8/11$1,176
This United Airlines deal was found by Cheapflights users on 8/10. 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.
mié. 8/203:35 pmSDF - SYD
2 stops49h 25mUnited Airlines
mié. 8/279:30 amSYD - SDF
2 stops23h 28mUnited Airlines
Deal found 8/10$1,195
This United Airlines deal was found by Cheapflights users on 8/11. 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.
vie. 12/123:33 pmSDF - SYD
2 stops47h 27mUnited Airlines
vie. 12/262:00 pmSYD - SDF
2 stops24h 24mUnited Airlines
Deal found 8/11$1,249
This Trip.com deal was found by Cheapflights users on 8/11. 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.
jue. 9/256:34 pmSDF - SYD
1 stop22h 31mMultiple Airlines
jue. 10/29:10 amSYD - SDF
1 stop22h 29mMultiple Airlines
Deal found 8/11$1,280
This Gurufare deal was found by Cheapflights users on 8/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/313:35 pmSDF - MEL
2 stops33h 00mAir New Zealand
mié. 11/128:35 amMEL - SDF
2 stops29h 22mAir New Zealand
Deal found 8/11$1,338
This FlightHub deal was found by Cheapflights users on 8/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/39:15 amSDF - MEL
2 stops33h 40mAir New Zealand
mié. 11/128:35 amMEL - SDF
2 stops29h 22mAir New Zealand
Deal found 8/11$1,347

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Australia 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 agosto 13, 2025.
Use the filters below to find and compare flights from Louisville to Australia that are best for you.

Fly from

Louisville

Fly to

Australia

Route

Depart

Return

Price

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

sáb. 10/25

9:40 am-7:00 am

1 stop30h 20m

Sydney Kingsford Smith

sáb. 11/1

11:50 am-7:54 pm

1 stop23h 04m

$929

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

sáb. 10/4

3:30 pm-7:55 am

2 stops25h 25m

Sydney Kingsford Smith

sáb. 10/11

10:30 am-8:33 pm

2 stops25h 03m

$933

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

vie. 10/3

7:20 pm-7:00 am

2 stops45h 40m

Sydney Kingsford Smith

sáb. 10/25

11:20 am-10:30 pm

2 stops26h 10m

$947

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

vie. 10/24

3:30 pm-7:55 am

2 stops25h 25m

Sydney Kingsford Smith

jue. 10/30

11:50 am-7:54 pm

1 stop23h 04m

$973

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

jue. 9/25

9:40 am-7:00 am

2 stops31h 20m

Sydney Kingsford Smith

jue. 10/2

9:30 am-10:30 pm

2 stops27h 00m

$973

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

vie. 8/29

1:59 pm-6:55 am

2 stops26h 56m

Sydney Kingsford Smith

dom. 9/7

10:20 am-8:28 pm

2 stops24h 08m

$1,103

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

mié. 9/24

3:30 pm-7:00 am

2 stops49h 30m

Sydney Kingsford Smith

dom. 10/12

11:20 am-6:33 pm

2 stops22h 13m

$1,117

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

vie. 10/31

3:35 pm-3:35 pm

2 stops33h 00m

Melbourne

mié. 11/12

8:35 am-9:57 pm

2 stops29h 22m

$1,338

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

lun. 11/3

9:15 am-10:55 am

2 stops33h 40m

Melbourne

mié. 11/12

8:35 am-9:57 pm

2 stops29h 22m

$1,347

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

vie. 10/31

3:35 pm-3:35 pm

2 stops33h 00m

Melbourne

vie. 11/14

10:35 am-9:57 pm

2 stops27h 22m

$1,385

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 25 results
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Best time to book a flight from Louisville to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia 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 Australia

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

Currently, February is the cheapest month in which you can book a flight from Louisville to Australia (average of $1,031). Flying from Louisville to Australia in December is currently the most expensive (average of $1,619). 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 SDF to AU?

Find hourly flight availability from Louisville to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 13, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Louisville to Australia as you normally would.

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. 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 Australia. Reviews last updated agosto 13, 2025.
Read through reviews of airlines operating flights from Louisville to Australia, such as Delta, Air New Zealand, and Qantas Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,979 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air New Zealand
8.0
Very good
504 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Qantas Airways
7.5
Good
893 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,920 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Louisville to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Louisville to Australia?

    Louisville Intl (SDF) is the airport you will fly out of if you book a flight from Louisville to Australia. It is only a 5.3 mi journey to Louisville Intl (SDF) from Louisville’s city center.

  • What are the most popular routes from Louisville to Australia?

    Most travelers choose Louisville Intl - Sydney Kingsford Smith, Louisville Intl - Melbourne or Louisville Intl - Melbourne Avalon when deciding on the best route from Louisville to Australia.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Louisville to Australia (average of $1,031). Flying from Louisville to Australia in December is currently the most expensive (average of $1,619). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Louisville to Australia

Discover the top 4 airlines that operate flights from Louisville to Australia. 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 agosto 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$930Average$1,421FlexibilityNo cancel feeOn-time69%
DeltaCheapest$979Average$1,409FlexibilityNo cancel feeOn-timeN/A
Qantas AirwaysCheapest$1,172Average$1,875FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,380Average$1,686FlexibilityNo cancel feeOn-time78%

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