Australia

$673+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SYD
Aug 2 — Aug 91
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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 July 3, 2026.

This oojo deal was found by Cheapflights users on 7/3. Clicking the ā€œPick Datesā€ button in this card will allow you to select your dates and further customize your flight criteria. From there, click ā€œFind dealsā€, make sure oojo is selected, and click ā€œCompare selectedā€ under the list of providers to see comparable flight deals.
Mon 8/177:03 pm
SDF
-
SYD
1 stop21h 52m
Qantas Airways
Mon 8/2412:00 pm
SYD
-
SDF
1 stop24h 17m
Qantas Airways
Deal found 7/3$1,146
This Delta deal was found by Cheapflights users on 6/29. Clicking the ā€œPick Datesā€ button in this card will allow you to select your dates and further customize your flight criteria. From there, click ā€œFind dealsā€, make sure Delta is selected, and click ā€œCompare selectedā€ under the list of providers to see comparable flight deals.
Wed 8/58:05 am
SDF
-
SYD
2 stops32h 45m
Delta
Tue 8/189:15 am
SYD
-
SDF
2 stops24h 18m
Delta
Deal found 6/29$1,190
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the ā€œPick Datesā€ button in this card will allow you to select your dates and further customize your flight criteria. From there, click ā€œFind dealsā€, make sure United Airlines is selected, and click ā€œCompare selectedā€ under the list of providers to see comparable flight deals.
Mon 8/33:41 pm
SDF
-
MEL
2 stops25h 49m
United Airlines
Mon 8/1010:55 am
MEL
-
SDF
2 stops40h 12m
United Airlines
Deal found 7/1$1,190
This oojo deal was found by Cheapflights users on 7/3. Clicking the ā€œPick Datesā€ button in this card will allow you to select your dates and further customize your flight criteria. From there, click ā€œFind dealsā€, make sure oojo is selected, and click ā€œCompare selectedā€ under the list of providers to see comparable flight deals.
Wed 8/264:01 pm
SDF
-
SYD
1 stop24h 54m
Qantas Airways
Sat 9/512:00 pm
SYD
-
SDF
1 stop24h 17m
Qantas Airways
Deal found 7/3$1,194
This Qantas Airways deal was found by Cheapflights users on 7/3. Clicking the ā€œPick Datesā€ button in this card will allow you to select your dates and further customize your flight criteria. From there, click ā€œFind dealsā€, make sure Qantas Airways is selected, and click ā€œCompare selectedā€ under the list of providers to see comparable flight deals.
Mon 8/175:53 pm
SDF
-
SYD
1 stop23h 02m
Multiple Airlines
Mon 8/2412:00 pm
SYD
-
SDF
2 stops25h 11m
Multiple Airlines
Deal found 7/3$1,207
This Qantas Airways deal was found by Cheapflights users on 7/1. Clicking the ā€œPick Datesā€ button in this card will allow you to select your dates and further customize your flight criteria. From there, click ā€œFind dealsā€, make sure Qantas Airways is selected, and click ā€œCompare selectedā€ under the list of providers to see comparable flight deals.
Mon 8/33:54 pm
SDF
-
MEL
1 stop23h 06m
Qantas Airways
Mon 8/109:00 am
MEL
-
SDF
2 stops22h 23m
Qantas Airways
Deal found 7/1$1,218
This Bravofly deal was found by Cheapflights users on 7/2. Clicking the ā€œPick Datesā€ button in this card will allow you to select your dates and further customize your flight criteria. From there, click ā€œFind dealsā€, make sure Bravofly is selected, and click ā€œCompare selectedā€ under the list of providers to see comparable flight deals.
Sun 8/167:30 pm
SDF
-
MEL
1 stop43h 30m
Multiple Airlines
Sun 8/238:50 pm
MEL
-
SDF
2 stops34h 33m
Multiple Airlines
Deal found 7/2$1,251
This United Airlines deal was found by Cheapflights users on 7/3. Clicking the ā€œPick Datesā€ button in this card will allow you to select your dates and further customize your flight criteria. From there, click ā€œFind dealsā€, make sure United Airlines is selected, and click ā€œCompare selectedā€ under the list of providers to see comparable flight deals.
Wed 8/263:25 pm
SDF
-
SYD
2 stops49h 35m
United Airlines
Sat 9/510:20 am
SYD
-
SDF
2 stops24h 16m
United Airlines
Deal found 7/3$1,306
This United Airlines deal was found by Cheapflights users on 7/3. Clicking the ā€œPick Datesā€ button in this card will allow you to select your dates and further customize your flight criteria. From there, click ā€œFind dealsā€, make sure United Airlines is selected, and click ā€œCompare selectedā€ under the list of providers to see comparable flight deals.
Tue 12/13:50 pm
SDF
-
SYD
1 stop23h 10m
United Airlines
Tue 12/811:20 am
SYD
-
SDF
2 stops24h 15m
United Airlines
Deal found 7/3$1,310
This Bravofly deal was found by Cheapflights users on 7/2. Clicking the ā€œPick Datesā€ button in this card will allow you to select your dates and further customize your flight criteria. From there, click ā€œFind dealsā€, make sure Bravofly is selected, and click ā€œCompare selectedā€ under the list of providers to see comparable flight deals.
Sun 8/167:30 pm
SDF
-
MEL
2 stops24h 50m
Qantas Airways
Sun 8/236:50 pm
MEL
-
SDF
2 stops36h 33m
Qantas Airways
Deal found 7/2$1,341
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the ā€œPick Datesā€ button in this card will allow you to select your dates and further customize your flight criteria. From there, click ā€œFind dealsā€, make sure United Airlines is selected, and click ā€œCompare selectedā€ under the list of providers to see comparable flight deals.
Mon 11/23:35 pm
SDF
-
SYD
2 stops25h 45m
United Airlines
Thu 11/129:20 am
SYD
-
SDF
1 stop19h 48m
United Airlines
Deal found 7/1$1,356
This United Airlines deal was found by Cheapflights users on 6/29. Clicking the ā€œPick Datesā€ button in this card will allow you to select your dates and further customize your flight criteria. From there, click ā€œFind dealsā€, make sure United Airlines is selected, and click ā€œCompare selectedā€ under the list of providers to see comparable flight deals.
Mon 9/211:46 pm
SDF
-
SYD
2 stops27h 14m
United Airlines
Thu 10/811:20 am
SYD
-
SDF
2 stops22h 51m
United Airlines
Deal found 6/29$1,360

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 July 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,190
(Delta)

One-way from

$625
(United Airlines)

Popular in

January

Cheapest in

February

Average price

$1,330
Provider with most accurate pricing for Louisville Intl-Sydney Kingsford Smith flight deals.
Provider most trusted by Cheapflights users for Louisville Intl-Sydney Kingsford Smith flights.
From Louisville Intl to Australia
One-way flight from Louisville Intl to Australia
Highest demand for flights based on searches. 22% potential increase in price ($435 potential increase over avg. RT price).
Cheapest flight prices on average. 9% potential price decrease ($133 potential savings vs. average RT price).
Average for round-trip flights in July 2026

Cheapflights Fare Finder

Ā 
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 July 3, 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 8/5

8:05 am-6:50 am

2 stops32h 45m

Sydney Kingsford Smith

Tue 8/18

9:15 am-7:33 pm

2 stops24h 18m

$1,190

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Fri 8/14

3:35 pm-7:30 am

2 stops25h 55m

Melbourne

Fri 8/21

9:30 am-7:59 pm

2 stops24h 29m

$1,190

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Mon 8/3

3:54 pm-5:00 am

1 stop23h 06m

Melbourne

Mon 8/10

9:00 am-5:23 pm

2 stops22h 23m

$1,218

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Sun 8/16

7:30 pm-5:00 am

1 stop43h 30m

Melbourne

Sun 8/23

8:50 pm-5:23 pm

2 stops34h 33m

$1,251
Quickest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 12/1

3:50 pm-7:00 am

1 stop23h 10m

Sydney Kingsford Smith

Tue 12/8

9:20 am-1:33 pm

1 stop20h 13m

$1,306

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 8/26

3:25 pm-7:00 am

2 stops49h 35m

Sydney Kingsford Smith

Sat 9/5

10:20 am-8:36 pm

2 stops24h 16m

$1,306

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 12/1

2:15 pm-8:30 am

2 stops26h 15m

Sydney Kingsford Smith

Tue 12/8

10:40 am-8:51 pm

2 stops26h 11m

$1,310

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Sun 8/16

7:30 pm-10:20 am

2 stops24h 50m

Melbourne

Sun 8/23

6:50 pm-5:23 pm

2 stops36h 33m

$1,341

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Mon 8/3

8:00 am-7:30 am

3 stops33h 30m

Melbourne

Mon 8/10

10:55 am-10:15 pm

2 stops25h 20m

$1,344

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 11/2

3:35 pm-7:00 am

1 stop23h 25m

Sydney Kingsford Smith

Thu 11/12

9:20 am-9:58 pm

1 stop28h 38m

$1,356

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 32 resultsSorted by cheapest first
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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, December is the cheapest month in which you can book a flight from Louisville to Australia (average of $662). Flying from Louisville to Australia in April is currently the most expensive (average of $1,351). 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 July 3, 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.

Boarding

8.1

Comfort

7.8

Food

7.2

Entertainment

7.8

Crew

8.5

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Boarding

8.1

Comfort

7.8

Food

7.2

Entertainment

7.8

Crew

8.5

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Boarding

8.1

Comfort

7.8

Food

7.2

Entertainment

7.8

Crew

8.5

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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, Air New Zealand, and Qantas Airways can get you from Louisville to Australia in just under 23h 06m. Your travel time can differ by up to 9h 39m. 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?

  • 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, December is the cheapest month in which you can book a flight from Louisville to Australia (average of $662). Flying from Louisville to Australia in April is currently the most expensive (average of $1,351). 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 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 July 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$662Average$1,351FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$973Average$1,445FlexibilityNo cancel feeOn-time69%

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