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$553+ 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
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
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 December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/11. 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 1/71:00 pmMEL - SDF
2 stops40h 24mUnited Airlines
Deal found 12/11$1,546
This Delta deal was found by Cheapflights users on 12/11. 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 12/241:52 pmSDF - SYD
2 stops26h 38mDelta
Sat 12/272:15 pmSYD - SDF
2 stops24h 48mDelta
Deal found 12/11$1,566
This United Airlines deal was found by Cheapflights users on 12/11. 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 12/2410:50 amSDF - SYD
2 stops30h 15mUnited Airlines
Sat 12/2711:50 amSYD - SDF
1 stop26h 04mUnited Airlines
Deal found 12/11$1,697
This oojo deal was found by Cheapflights users on 12/10. 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.
Wed 12/241:46 pmSDF - MEL
2 stops30h 54mQantas Airways
Wed 1/74:05 pmMEL - SDF
1 stop20h 42mQantas Airways
Deal found 12/10$2,601
This oojo deal was found by Cheapflights users on 12/11. 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 12/159:31 amSDF - SYD
2 stops31h 14mAir New Zealand
Wed 12/177:15 pmSYD - SDF
2 stops42h 39mAir New Zealand
Deal found 12/11$2,799
This Delta deal was found by Cheapflights users on 12/11. 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 12/246:00 amSDF - MEL
3 stops34h 00mDelta
Wed 1/710:10 amMEL - SDF
2 stops28h 56mDelta
Deal found 12/11$3,044
This Gotogate deal was found by Cheapflights users on 12/11. 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 12/246:00 amSDF - SYD
2 stops36h 30mAir New Zealand
Sat 12/276:50 pmSYD - SDF
3 stops41h 09mAir New Zealand
Deal found 12/11$3,087
This Gurufare deal was found by Cheapflights users on 12/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/156:34 pmSDF - SYD
2 stops25h 21mQantas Airways
Wed 12/172:05 pmSYD - SDF
1 stop19h 33mQantas Airways
Deal found 12/11$3,681
This Gurufare deal was found by Cheapflights users on 12/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:46 pmSDF - SYD
1 stop25h 09mQantas Airways
Sat 12/272:05 pmSYD - SDF
1 stop21h 37mQantas Airways
Deal found 12/11$3,808
This Qantas Airways deal was found by Cheapflights users on 12/10. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:46 pmSDF - AVV
2 stops32h 24mQantas Airways
Wed 1/710:20 amAVV - SDF
2 stops23h 13mQantas Airways
Deal found 12/10$4,799

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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,161
(United Airlines)

One-way from

$553
(Delta)

Popular in

December

Cheapest in

November

Average price

$1,772
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. 12% potential increase in price ($198 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 12, 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

Sun 2/1

9:15 am-10:00 am

2 stops32h 45m

Melbourne

Mon 2/9

11:30 am-7:54 pm

2 stops24h 24m

$1,161

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sun 4/5

3:25 pm-7:00 am

2 stops25h 35m

Sydney Kingsford Smith

Mon 4/13

9:30 am-10:32 pm

2 stops27h 02m

$1,167

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Wed 5/6

3:20 pm-7:30 am

2 stops26h 10m

Melbourne

Fri 5/15

9:30 am-10:09 pm

2 stops26h 39m

$1,211

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 3/19

3:30 pm-7:00 am

1 stop24h 30m

Sydney Kingsford Smith

Sun 4/5

9:30 am-10:32 pm

2 stops27h 02m

$1,213

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 1/17

2:05 pm-9:15 am

2 stops27h 10m

Sydney Kingsford Smith

Sat 1/24

11:20 am-10:30 pm

2 stops27h 10m

$1,267

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 2/7

3:30 pm-7:00 am

1 stop23h 30m

Sydney Kingsford Smith

Wed 2/11

11:50 am-9:59 pm

1 stop26h 09m

$1,271

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Wed 3/11

9:15 am-9:25 am

2 stops33h 10m

Melbourne

Tue 3/17

4:50 pm-9:59 pm

2 stops44h 09m

$1,383

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/9

9:32 am-7:00 am

2 stops31h 28m

Sydney Kingsford Smith

Wed 6/17

10:20 am-7:35 pm

2 stops47h 15m

$1,413

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Mon 2/16

7:05 am-8:00 am

2 stops32h 55m

Melbourne

Fri 2/20

10:10 am-7:02 pm

2 stops24h 52m

$1,468

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Fri 3/20

3:15 pm-8:30 am

2 stops26h 15m

Melbourne

Mon 3/23

10:30 am-7:51 pm

2 stops24h 21m

$1,481

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

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 $378). Flying from Louisville to Australia in August is currently the most expensive (average of $1,024). 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 December 12, 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 at noon, which can drop the price by up to 12% versus a flight in the evening.

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 December 12, 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
552 reviews

Food

7.4

Comfort

8.0

Crew

8.5

Entertainment

7.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess
Air New Zealand
8.0
Very good
552 reviews
Air New Zealand
8.0
Very good
552 reviews

Food

7.4

Comfort

8.0

Crew

8.5

Entertainment

7.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess
Delta
7.9
Good
8,009 reviews
Air New Zealand
8.0
Very good
552 reviews

Food

7.4

Comfort

8.0

Crew

8.5

Entertainment

7.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess
United Airlines
7.4
Good
9,095 reviews
Air New Zealand
8.0
Very good
552 reviews

Food

7.4

Comfort

8.0

Crew

8.5

Entertainment

7.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess

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 32h 45m. Your travel time can differ by up to 25m. 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, 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 August is currently the most expensive (average of $1,024). 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$930Average$1,401FlexibilityNo cancel feeOn-time69%
DeltaCheapest$979Average$1,351FlexibilityNo cancel feeOn-timeN/A
Air New ZealandCheapest$1,380Average$1,684FlexibilityNo cancel feeOn-time78%

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