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$1,048+ 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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SYD
Dec 12 — Dec 191
Fri 12/12
Fri 12/19
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 November 12, 2025.

This United Airlines deal was found by Cheapflights users on 11/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:00 amSDF - MEL
2 stops58h 00mUnited Airlines
Wed 12/311:00 pmMEL - SDF
2 stops47h 32mUnited Airlines
Deal found 11/10$1,677
This Expedia deal was found by Cheapflights users on 11/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:34 amSDF - MEL
2 stops30h 06mJapan Airlines
Tue 11/187:20 amMEL - SDF
2 stops44h 53mJapan Airlines
Deal found 11/11$1,972
This oojo deal was found by Cheapflights users on 11/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/307:10 amSDF - SYD
2 stops33h 35mAir New Zealand
Sun 12/77:45 amSYD - SDF
2 stops30h 12mAir New Zealand
Deal found 11/12$1,996
This Trip.com deal was found by Cheapflights users on 11/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/123:35 pmSDF - MEL
2 stops25h 50mAir New Zealand
Tue 11/184:50 pmMEL - SDF
2 stops60h 35mAir New Zealand
Deal found 11/11$1,996
This Delta deal was found by Cheapflights users on 11/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:14 amSDF - MEL
2 stops29h 46mDelta
Wed 1/710:10 amMEL - SDF
3 stops29h 45mDelta
Deal found 11/10$2,085
This United Airlines deal was found by Cheapflights users on 11/12. 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.
Sun 11/307:10 amSDF - SYD
1 stop31h 50mUnited Airlines
Sun 12/711:50 amSYD - SDF
1 stop24h 04mUnited Airlines
Deal found 11/12$2,112
This United Airlines deal was found by Cheapflights users on 11/12. 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.
Wed 12/248:00 amSDF - MEL
2 stops34h 00mUnited Airlines
Wed 1/711:30 amMEL - SDF
2 stops38h 53mUnited Airlines
Deal found 11/12$2,119
This United Airlines deal was found by Cheapflights users on 11/12. 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.
Sat 12/273:25 pmSDF - MEL
2 stops50h 05mUnited Airlines
Sat 1/311:30 amMEL - SDF
2 stops48h 29mUnited Airlines
Deal found 11/12$2,258
This Ovago deal was found by Cheapflights users on 11/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/163:40 pmSDF - SYD
2 stops25h 25mAir New Zealand
Fri 12/2611:45 amSYD - SDF
2 stops24h 14mAir New Zealand
Deal found 11/10$2,375
This United Airlines deal was found by Cheapflights users on 11/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/163:33 pmSDF - SYD
2 stops25h 42mUnited Airlines
Fri 12/2611:50 amSYD - SDF
1 stop24h 09mUnited Airlines
Deal found 11/10$2,415
This Air Canada deal was found by Cheapflights users on 11/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/307:00 amSDF - SYD
3 stops34h 35mAir Canada
Sun 12/711:20 amSYD - SDF
2 stops26h 50mAir Canada
Deal found 11/12$2,561
This Gurufare deal was found by Cheapflights users on 11/12. 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 Gurufare 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 11/12$2,605

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 November 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,346
(Delta)

One-way from

$1,048
(United Airlines)

Popular in

December

Cheapest in

April

Average price

$1,142
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. 14% potential increase in price ($218 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 November 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 November 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

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 1/26

12:22 pm-8:30 am

2 stops28h 08m

Sydney Kingsford Smith

Fri 2/6

10:40 am-11:50 pm

2 stops29h 10m

$1,351

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 1/26

3:30 pm-9:05 am

2 stops25h 35m

Sydney Kingsford Smith

Fri 2/6

11:50 am-7:54 pm

1 stop24h 04m

$1,511

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Wed 12/24

8:00 am-10:00 am

2 stops58h 00m

Melbourne

Wed 12/31

1:00 pm-8:32 pm

2 stops47h 32m

$1,677

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 1/26

3:30 pm-8:45 am

2 stops25h 15m

Sydney Kingsford Smith

Fri 2/6

11:45 am-10:30 pm

3 stops26h 45m

$1,728

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sun 11/30

7:10 am-8:45 am

2 stops33h 35m

Sydney Kingsford Smith

Sun 12/7

7:45 am-9:57 pm

2 stops30h 12m

$1,996

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Wed 12/24

10:14 am-8:00 am

2 stops29h 46m

Melbourne

Wed 1/7

10:10 am-11:55 pm

3 stops29h 45m

$2,085

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sun 11/30

7:10 am-7:00 am

1 stop31h 50m

Sydney Kingsford Smith

Sun 12/7

11:50 am-7:54 pm

1 stop24h 04m

$2,112

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Wed 12/24

8:00 am-10:00 am

2 stops34h 00m

Melbourne

Wed 1/7

11:30 am-10:23 am

2 stops38h 53m

$2,119

LouisvillePerth

SDF - PER

SDFPER

Louisville Intl

Sun 4/19

12:56 pm-6:40 pm

2 stops41h 44m

Perth

Thu 4/23

3:40 pm-5:30 pm

2 stops37h 50m

$2,147

LouisvilleMelbourne

SDF - MEL

SDFMEL

Louisville Intl

Sat 12/27

3:25 pm-9:30 am

2 stops50h 05m

Melbourne

Sat 1/3

11:30 am-7:59 pm

2 stops48h 29m

$2,258

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 20 results
1
2

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 August is currently the most expensive (average of $1,016). 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 November 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 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 November 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
526 reviews

Food

7.4

Comfort

8.0

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - BNE

I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
Air New Zealand
8.0
Very good
526 reviews
Air New Zealand
8.0
Very good
526 reviews

Food

7.4

Comfort

8.0

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - BNE

I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
Delta
7.9
Good
8,009 reviews
Air New Zealand
8.0
Very good
526 reviews

Food

7.4

Comfort

8.0

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - BNE

I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.
United Airlines
7.4
Good
9,016 reviews
Air New Zealand
8.0
Very good
526 reviews

Food

7.4

Comfort

8.0

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Annabel,Nov 2025

AKL - BNE

I had no worries going through customs in Canada but in New Zealand there were two machines and it beeped on me. Something on my side. There was nothing on my side. I lifted my top to show, i had a fabric belt tied around my skirt, maybe that which wasn’t knotted is what triggered. Shrug. I do wonder what that was that had me patted lightly with a guard in plastic gloves. so it goes.

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 Air New Zealand can get you from Louisville to Australia in just under 25h 35m. Your travel time can differ by up to 8h. 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 - 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 $391). Flying from Louisville to Australia in August is currently the most expensive (average of $1,016). 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.

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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 November 12, 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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