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$554+ 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SYD
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap 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 January 27, 2026.

This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2510:18 am
SDF
-
SYD
2 stops30h 12m
Delta
Wed 3/410:40 am
SYD
-
SDF
2 stops23h 10m
Delta
Deal found 1/26$1,171
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/255:33 am
SDF
-
MEL
2 stops34h 27m
Delta
Wed 3/410:10 am
MEL
-
SDF
2 stops26h 18m
Delta
Deal found 1/26$1,171
This United Airlines deal was found by Cheapflights users on 1/25. 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 2/149:15 am
SDF
-
SYD
1 stop29h 45m
United Airlines
Wed 2/1811:50 am
SYD
-
SDF
1 stop25h 56m
United Airlines
Deal found 1/25$1,275
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 3/131:58 pm
SDF
-
SYD
2 stops25h 22m
United Airlines
Sat 3/2111:50 am
SYD
-
SDF
1 stop23h 01m
United Airlines
Deal found 1/27$1,276
This United Airlines deal was found by Cheapflights users on 1/25. 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 5/163:37 pm
SDF
-
MEL
2 stops26h 38m
United Airlines
Sat 5/2310:55 am
MEL
-
SDF
2 stops26h 06m
United Airlines
Deal found 1/25$1,294
This United Airlines deal was found by Cheapflights users on 1/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/199:15 am
SDF
-
SYD
1 stop30h 45m
United Airlines
Sun 4/510:20 am
SYD
-
SDF
2 stops42h 11m
United Airlines
Deal found 1/26$1,385
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Sun 10/45:45 am
SDF
-
MEL
2 stops36h 30m
United Airlines
Sun 10/1110:30 am
MEL
-
SDF
2 stops26h 39m
United Airlines
Deal found 1/27$1,396
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Fri 2/202:05 pm
SDF
-
MEL
2 stops27h 25m
United Airlines
Tue 2/2411:30 am
MEL
-
SDF
2 stops24h 21m
United Airlines
Deal found 1/25$1,484
This United Airlines deal was found by Cheapflights users on 1/27. 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 2/163:15 pm
SDF
-
MEL
2 stops26h 15m
United Airlines
Fri 2/201:00 pm
MEL
-
SDF
2 stops24h 46m
United Airlines
Deal found 1/27$1,485
This Gotogate deal was found by Cheapflights users on 1/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/299:15 am
SDF
-
SYD
2 stops33h 30m
Air New Zealand
Tue 5/56:55 pm
SYD
-
SDF
3 stops41h 04m
Air New Zealand
Deal found 1/27$1,605
This Gotogate deal was found by Cheapflights users on 1/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/259:15 am
SDF
-
MEL
2 stops33h 40m
Air New Zealand
Wed 3/49:05 am
MEL
-
SDF
3 stops26h 46m
Air New Zealand
Deal found 1/26$1,771
This Cathay Pacific deal was found by Cheapflights users on 1/26. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/196:23 pm
SDF
-
SYD
2 stops35h 27m
Multiple Airlines
Sun 4/58:40 pm
SYD
-
SDF
3 stops38h 46m
Multiple Airlines
Deal found 1/26$1,774

Find flight deals from Louisville to Australia

Keep the following information in mind while searching for Louisville to Australia flight deals. Data was last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,171
(Delta)

One-way from

$554
(Delta)

Popular in

December

Cheapest in

November

Average price

$1,746
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. 9% potential increase in price ($143 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 27, 2026.
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

Wed 6/10

7:00 am-6:50 am

2 stops33h 50m

Sydney Kingsford Smith

Wed 6/17

9:15 am-10:50 pm

2 stops27h 35m

$1,171

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Wed 2/25

5:33 am-8:00 am

2 stops34h 27m

Melbourne

Wed 3/4

10:10 am-8:28 pm

2 stops26h 18m

$1,171

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 2/25

3:30 pm-9:05 am

2 stops25h 35m

Sydney Kingsford Smith

Wed 3/4

11:50 am-7:51 pm

1 stop24h 01m

$1,275

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 2/14

9:15 am-7:00 am

1 stop29h 45m

Sydney Kingsford Smith

Wed 2/18

11:50 am-9:46 pm

1 stop25h 56m

$1,275

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/9

3:20 pm-7:00 am

2 stops25h 40m

Sydney Kingsford Smith

Wed 6/17

9:30 am-8:14 pm

2 stops24h 44m

$1,279

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/9

10:43 am-6:50 am

2 stops30h 07m

Sydney Kingsford Smith

Wed 6/17

9:15 am-10:50 pm

2 stops27h 35m

$1,279

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 3/13

5:45 pm-9:05 am

2 stops24h 20m

Sydney Kingsford Smith

Sat 3/21

12:10 pm-8:14 pm

2 stops23h 04m

$1,281

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 4/29

3:36 pm-7:00 am

2 stops25h 24m

Sydney Kingsford Smith

Tue 5/5

9:30 am-6:36 pm

2 stops23h 06m

$1,281

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Mon 2/16

3:30 pm-10:00 am

2 stops26h 30m

Melbourne

Fri 2/20

1:00 pm-9:46 pm

2 stops24h 46m

$1,484

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Fri 2/20

2:05 pm-9:30 am

2 stops27h 25m

Melbourne

Tue 2/24

11:30 am-7:51 pm

2 stops24h 21m

$1,484

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 31 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 $391). Flying from Louisville to Australia in December is currently the most expensive (average of $1,035). 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.

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 January 27, 2026.
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
575 reviews

Food

7.4

Overall

8.0

Crew

8.5

Comfort

8.0

Boarding

8.2

Entertainment

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air New Zealand
8.0
Very good
575 reviews
Air New Zealand
8.0
Very good
575 reviews

Food

7.4

Overall

8.0

Crew

8.5

Comfort

8.0

Boarding

8.2

Entertainment

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Delta
7.9
Good
8,119 reviews
Air New Zealand
8.0
Very good
575 reviews

Food

7.4

Overall

8.0

Crew

8.5

Comfort

8.0

Boarding

8.2

Entertainment

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
United Airlines
7.4
Good
9,205 reviews
Air New Zealand
8.0
Very good
575 reviews

Food

7.4

Overall

8.0

Crew

8.5

Comfort

8.0

Boarding

8.2

Entertainment

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane

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?

    Delta, United Airlines, and Qatar Airways can get you from Louisville to Australia in just under 29h 45m. Your travel time can differ by up to 11h 30m. Louisville and Australia 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 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, October is the cheapest month in which you can book a flight from Louisville to Australia (average of $391). Flying from Louisville to Australia in December is currently the most expensive (average of $1,035). 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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Alternative routes for Louisville to Australia

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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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$973Average$1,480FlexibilityNo cancel feeOn-time69%
DeltaCheapest$985Average$1,424FlexibilityNo cancel feeOn-timeN/A
Air New ZealandCheapest$1,380Average$1,684FlexibilityNo cancel feeOn-time78%

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