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$592+ 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 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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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 October 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/29. 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 12/243:18 pmSDF - MEL
2 stops26h 12mUnited Airlines
Wed 1/711:30 amMEL - SDF
2 stops24h 58mUnited Airlines
Deal found 10/29$1,289
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 10/29. 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.
Tue 11/117:00 amSDF - MEL
2 stops35h 00mUnited Airlines
Fri 11/1411:30 amMEL - SDF
2 stops24h 24mUnited Airlines
Deal found 10/29$1,441
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 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.
Thu 12/117:00 amSDF - MEL
2 stops34h 30mUnited Airlines
Thu 12/181:00 pmMEL - SDF
2 stops25h 24mUnited Airlines
Deal found 10/27$1,499
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 oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1110:30 amSDF - MEL
2 stops45h 15mQatar Airways
Fri 11/144:55 pmMEL - SDF
2 stops44h 45mQatar Airways
Deal found 10/28$2,077
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 oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:46 pmSDF - MEL
2 stops30h 54mQantas Airways
Wed 1/74:05 pmMEL - SDF
1 stop20h 42mQantas Airways
Deal found 10/27$2,602

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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,289
(United Airlines)

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

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 October 29, 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

Wed 12/24

3:18 pm-9:30 am

2 stops26h 12m

Melbourne

Wed 1/7

11:30 am-8:28 pm

2 stops24h 58m

$1,289

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

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Mon 2/16

10:15 am-8:00 am

2 stops29h 45m

Melbourne

Fri 2/20

10:10 am-10:55 pm

2 stops28h 45m

$1,432

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Tue 11/11

7:00 am-10:00 am

2 stops35h 00m

Melbourne

Fri 11/14

11:30 am-7:54 pm

2 stops24h 24m

$1,441

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Thu 12/11

7:00 am-9:30 am

2 stops34h 30m

Melbourne

Thu 12/18

1:00 pm-10:24 pm

2 stops25h 24m

$1,499

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 27 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, October is the cheapest month in which you can book a flight from Louisville to Australia (average of $405). Flying from Louisville to Australia in January is currently the most expensive (average of $1,037). 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 October 29, 2025.

When flying from Louisville to Australia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 19% versus a flight at noon.

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 October 29, 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
519 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.5

Crew

8.5

Comfort

8.0

Food

7.4

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
519 reviews
Air New Zealand
8.0
Very good
519 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.5

Crew

8.5

Comfort

8.0

Food

7.4

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
7.9
Good
7,994 reviews
Air New Zealand
8.0
Very good
519 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.5

Crew

8.5

Comfort

8.0

Food

7.4

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
9,001 reviews
Air New Zealand
8.0
Very good
519 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.5

Crew

8.5

Comfort

8.0

Food

7.4

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, Delta, and Qatar Airways can get you from Louisville to Australia in just under 26h 12m. Your travel time can differ by up to 15h 32m. 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 cheapest airlines to fly from Louisville to Australia one-way?

    $942 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Delta and Qantas Airways, with prices starting from $2,121 and $2,359, respectively.

  • 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, October is the cheapest month in which you can book a flight from Louisville to Australia (average of $405). Flying from Louisville to Australia in January is currently the most expensive (average of $1,037). 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$930Average$1,375FlexibilityNo cancel feeOn-time69%
DeltaCheapest$979Average$1,338FlexibilityNo cancel feeOn-timeN/A
Air New ZealandCheapest$1,380Average$1,684FlexibilityNo cancel feeOn-time78%

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