HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Australia

$549+ 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
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Louisville to Australia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 March 12, 2026.

This United Airlines deal was found by Cheapflights users on 3/12. 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.
Tue 6/98:00 am
SDF
-
SYD
3 stops33h 00m
United Airlines
Wed 6/179:30 am
SYD
-
SDF
2 stops24h 53m
United Airlines
Deal found 3/12$1,184
This oojo deal was found by Cheapflights users on 3/8. 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.
Mon 6/299:30 am
SDF
-
MEL
2 stops35h 25m
Air New Zealand
Wed 7/158:35 am
MEL
-
SDF
2 stops27h 40m
Air New Zealand
Deal found 3/8$1,216
This oojo deal was found by Cheapflights users on 3/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:15 am
SDF
-
SYD
2 stops36h 30m
Air New Zealand
Mon 6/19:55 am
SYD
-
SDF
2 stops26h 20m
Air New Zealand
Deal found 3/10$1,223
This Justfly.com deal was found by Cheapflights users on 3/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:15 am
SDF
-
SYD
2 stops36h 30m
Air New Zealand
Wed 8/129:55 am
SYD
-
SDF
2 stops26h 19m
Air New Zealand
Deal found 3/10$1,235
This BusinessClass deal was found by Cheapflights users on 3/10. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/59:30 am
SDF
-
SYD
2 stops33h 15m
Air New Zealand
Wed 8/129:55 am
SYD
-
SDF
2 stops26h 19m
Air New Zealand
Deal found 3/10$1,248
This oojo deal was found by Cheapflights users on 3/9. 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 8/269:30 am
SDF
-
SYD
2 stops33h 15m
Air New Zealand
Sat 9/59:55 am
SYD
-
SDF
2 stops26h 19m
Air New Zealand
Deal found 3/9$1,263
This oojo deal was found by Cheapflights users on 3/8. 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.
Sat 8/19:30 am
SDF
-
MEL
2 stops35h 25m
Air New Zealand
Mon 8/3112:10 pm
MEL
-
SDF
2 stops24h 04m
Air New Zealand
Deal found 3/8$1,264
This Justfly.com deal was found by Cheapflights users on 3/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:15 am
SDF
-
SYD
2 stops36h 30m
Air New Zealand
Thu 8/139:55 am
SYD
-
SDF
2 stops26h 19m
Air New Zealand
Deal found 3/10$1,283
This Justfly.com deal was found by Cheapflights users on 3/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/316:15 am
SDF
-
MEL
2 stops38h 40m
Air New Zealand
Mon 8/3112:10 pm
MEL
-
SDF
2 stops24h 04m
Air New Zealand
Deal found 3/8$1,283
This KAYAK deal was found by Cheapflights users on 3/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/293:41 pm
SDF
-
MEL
2 stops29h 14m
Air New Zealand
Mon 8/318:35 am
MEL
-
SDF
2 stops27h 39m
Air New Zealand
Deal found 3/8$1,288
This BusinessClass deal was found by Cheapflights users on 3/10. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/59:30 am
SDF
-
SYD
2 stops33h 15m
Air New Zealand
Fri 8/149:55 am
SYD
-
SDF
2 stops26h 19m
Air New Zealand
Deal found 3/10$1,296
This KAYAK deal was found by Cheapflights users on 3/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:15 am
SDF
-
MEL
2 stops38h 40m
Air New Zealand
Mon 8/318:35 am
MEL
-
SDF
2 stops27h 39m
Air New Zealand
Deal found 3/8$1,297

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 March 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,184
(United Airlines)

One-way from

$549
(Delta)

Popular in

March

Cheapest in

November

Average price

$2,055
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. 11% potential increase in price ($201 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 12, 2026.
Use the filters below to find and compare flights from Louisville to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 6/10

3:25 pm-7:00 am

2 stops25h 35m

Sydney Kingsford Smith

Wed 6/17

10:20 am-10:30 pm

2 stops26h 10m

$1,184

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/9

8:00 am-7:00 am

3 stops33h 00m

Sydney Kingsford Smith

Wed 6/17

9:30 am-8:23 pm

2 stops24h 53m

$1,184

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 4/23

9:07 am-6:55 am

2 stops31h 48m

Sydney Kingsford Smith

Thu 4/30

9:30 am-10:30 pm

2 stops27h 00m

$1,320

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Mon 6/29

3:41 pm-10:55 am

2 stops29h 14m

Melbourne

Wed 7/15

12:10 pm-9:27 am

3 stops35h 17m

$1,369

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sun 8/2

9:30 am-7:00 am

2 stops31h 30m

Sydney Kingsford Smith

Fri 8/14

10:20 am-6:56 pm

2 stops22h 36m

$1,370

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Wed 6/24

3:41 pm-7:30 am

2 stops25h 49m

Melbourne

Wed 7/8

12:10 pm-10:15 pm

2 stops24h 05m

$1,479

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Wed 7/29

8:00 am-7:30 am

3 stops33h 30m

Melbourne

Sun 8/30

9:30 am-8:36 pm

2 stops25h 06m

$1,505

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Sun 8/2

9:00 am-8:15 am

2 stops33h 15m

Melbourne

Sun 8/30

9:30 am-6:56 pm

2 stops23h 26m

$1,505

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Wed 6/24

9:25 am-7:50 am

2 stops32h 25m

Melbourne

Wed 7/8

10:00 am-11:59 pm

2 stops27h 59m

$1,512

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Wed 6/24

3:25 pm-8:15 am

2 stops26h 50m

Melbourne

Wed 7/8

9:30 am-8:23 pm

2 stops24h 53m

$1,555

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

Showing 1-10 of 44 resultsSorted by cheapest first
1
2
3
...
5

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 $378). Flying from Louisville to Australia in April is currently the most expensive (average of $1,055). 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 March 12, 2026.
Read through reviews of airlines operating flights from Louisville to Australia, such as Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,286 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.8

Food

7.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,286 reviews
Delta
7.9
Good
8,286 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.8

Food

7.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,418 reviews
Delta
7.9
Good
8,286 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.8

Food

7.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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, Air New Zealand, and Delta can get you from Louisville to Australia in just under 25h 35m. Your travel time can differ by up to 6h 50m. 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 $378). Flying from Louisville to Australia in April is currently the most expensive (average of $1,055). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Louisville to Australia

Discover the top 2 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 March 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$973Average$1,493FlexibilityNo cancel feeOn-time69%
DeltaCheapest$985Average$1,424FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.