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$546+ Cheap flights from Louisville (SDF) to Australia

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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SYD
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
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 septiembre 17, 2025.

Round-trip from

$980
(United Airlines)

One-way from

$546
(United Airlines)

Popular in

December

Cheapest in

April

Average price

$1,350
From Louisville Intl to Australia
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One-way flight from Louisville Intl to Australia
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Highest demand for flights based on searches. 14% potential increase in price ($219 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 September 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 septiembre 17, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. 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. 10/319:00 amSDF - MEL
2 stops32h 30mUnited Airlines
vie. 11/711:30 amMEL - SDF
2 stops24h 24mUnited Airlines
Deal found 9/15$980
This Delta deal was found by Cheapflights users on 9/15. 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.
mié. 9/248:10 amSDF - SYD
2 stops32h 25mDelta
dom. 10/1210:25 amSYD - SDF
2 stops23h 05mDelta
Deal found 9/15$1,082
This Trip.com deal was found by Cheapflights users on 9/15. 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.
sáb. 10/253:37 pmSDF - SYD
1 stop24h 23mUnited Airlines
vie. 11/711:50 amSYD - SDF
1 stop24h 04mUnited Airlines
Deal found 9/15$1,124
This United Airlines deal was found by Cheapflights users on 9/17. 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. 11/15:57 pmSDF - SYD
2 stops24h 08mUnited Airlines
sáb. 11/811:50 amSYD - SDF
1 stop26h 07mUnited Airlines
Deal found 9/17$1,226
This United Airlines deal was found by Cheapflights users on 9/15. 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. 10/308:00 amSDF - SYD
2 stops34h 15mUnited Airlines
jue. 11/611:50 amSYD - SDF
1 stop26h 07mUnited Airlines
Deal found 9/15$1,231
This United Airlines deal was found by Cheapflights users on 9/17. 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. 12/1312:20 pmSDF - SYD
2 stops28h 55mUnited Airlines
mar. 12/3012:10 pmSYD - SDF
2 stops26h 20mUnited Airlines
Deal found 9/17$1,235
This Delta deal was found by Cheapflights users on 9/17. 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.
jue. 12/116:00 amSDF - SYD
2 stops34h 30mDelta
sáb. 12/2710:40 amSYD - SDF
2 stops38h 53mDelta
Deal found 9/17$1,273
This United Airlines deal was found by Cheapflights users on 9/16. 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. 11/12:02 pmSDF - MEL
2 stops27h 58mUnited Airlines
sáb. 11/81:00 pmMEL - SDF
2 stops24h 57mUnited Airlines
Deal found 9/16$1,275
This Delta deal was found by Cheapflights users on 9/17. 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.
jue. 12/116:00 amSDF - SYD
2 stops34h 30mDelta
mar. 12/302:15 pmSYD - SDF
2 stops35h 18mDelta
Deal found 9/17$1,289
This United Airlines deal was found by Cheapflights users on 9/14. 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.
mar. 12/212:20 pmSDF - SYD
2 stops26h 40mUnited Airlines
mar. 12/1611:50 amSYD - SDF
2 stops26h 39mUnited Airlines
Deal found 9/14$1,318
This United Airlines deal was found by Cheapflights users on 9/14. 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. 11/138:00 amSDF - SYD
2 stops33h 15mUnited Airlines
lun. 11/1711:50 amSYD - SDF
1 stop24h 04mUnited Airlines
Deal found 9/14$1,328
This Delta deal was found by Cheapflights users on 9/14. 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.
jue. 11/137:50 amSDF - SYD
2 stops32h 40mDelta
lun. 11/1710:40 amSYD - SDF
2 stops28h 20mDelta
Deal found 9/14$1,332

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 septiembre 17, 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

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

vie. 10/31

9:00 am-8:30 am

2 stops32h 30m

Melbourne

vie. 11/7

11:30 am-7:54 pm

2 stops24h 24m

$980

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

lun. 2/16

3:20 pm-9:30 am

2 stops26h 10m

Melbourne

vie. 2/20

11:30 am-9:59 pm

2 stops26h 29m

$1,187

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

sáb. 11/1

5:57 pm-9:05 am

2 stops24h 08m

Sydney Kingsford Smith

sáb. 11/8

11:20 am-7:54 pm

2 stops24h 34m

$1,226

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

dom. 12/14

9:00 am-6:20 am

2 stops29h 20m

Sydney Kingsford Smith

lun. 12/29

12:10 pm-10:24 pm

2 stops26h 14m

$1,235

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

lun. 12/15

9:00 am-9:05 am

2 stops32h 05m

Sydney Kingsford Smith

mié. 12/31

11:20 am-10:30 pm

2 stops27h 10m

$1,235

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

sáb. 12/13

9:00 am-9:15 am

2 stops32h 15m

Sydney Kingsford Smith

sáb. 12/27

11:50 am-7:59 pm

1 stop24h 09m

$1,235

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

mar. 12/16

12:20 pm-9:15 am

2 stops28h 55m

Sydney Kingsford Smith

lun. 12/29

11:50 am-9:54 pm

1 stop26h 04m

$1,235

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

dom. 12/14

9:00 am-9:05 am

2 stops32h 05m

Sydney Kingsford Smith

mar. 12/30

11:20 am-10:30 pm

2 stops27h 10m

$1,235

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

dom. 12/14

9:00 am-6:20 am

2 stops29h 20m

Sydney Kingsford Smith

dom. 12/28

11:20 am-7:59 pm

2 stops24h 39m

$1,235

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

mar. 12/16

9:00 am-9:15 am

2 stops32h 15m

Sydney Kingsford Smith

sáb. 12/27

11:50 am-7:59 pm

1 stop24h 09m

$1,235

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 51 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, March is the cheapest month in which you can book a flight from Louisville to Australia (average of $1,032). Flying from Louisville to Australia in December is currently the most expensive (average of $1,627). 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 septiembre 17, 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 septiembre 17, 2025.
Read through reviews of airlines operating flights from Louisville to Australia, such as Air New Zealand, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air New Zealand
8.0
Very good
505 reviews

Comfort

8.0

Entertainment

7.4

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
Air New Zealand
8.0
Very good
505 reviews
Air New Zealand
8.0
Very good
505 reviews

Comfort

8.0

Entertainment

7.4

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
Delta
8.0
Very good
7,961 reviews
Air New Zealand
8.0
Very good
505 reviews

Comfort

8.0

Entertainment

7.4

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
United Airlines
7.4
Good
8,926 reviews
Air New Zealand
8.0
Very good
505 reviews

Comfort

8.0

Entertainment

7.4

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

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.

  • How long is the flight from Louisville to Australia?

    United Airlines and Qatar Airways can get you from Louisville to Australia in just under 32h 30m. Your travel time can differ by up to 12h 14m. Louisville and Australia are separated by a distance of 9709 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Most travelers choose Louisville Intl - Melbourne, Louisville Intl - Sydney Kingsford Smith 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, March is the cheapest month in which you can book a flight from Louisville to Australia (average of $1,032). Flying from Louisville to Australia in December is currently the most expensive (average of $1,627). 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

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Top 3 airlines flying from Louisville to Australia

Discover the top 3 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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$930Average$1,415FlexibilityNo cancel feeOn-time69%
DeltaCheapest$979Average$1,409FlexibilityNo cancel feeOn-timeN/A
Air New ZealandCheapest$1,380Average$1,686FlexibilityNo cancel feeOn-time78%

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