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Cheap flights from Louisville to Sydney from $1,657

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SYD
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Louisville to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 November 2025.

Round-trip from

$2,069

One-way from

$1,657

Popular in

December

Cheapest in

April

Average price

$1,749
Delta
  • Delta
  • 16/2-20/2
  • 4 total stops
  • 52h 26m total
  • Louisville to Sydney
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Air New Zealand
  • Air New Zealand
  • 15/12
  • 2 total stops
  • 25h 25m total
  • Louisville to Sydney
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($513 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease ($97 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Find flight deals from Louisville to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Louisville to Sydney
Explore the most affordable flight options available from Louisville to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 November 2025.

Wed 24/1209:05SDF - SYD
2 stops29h 55mUnited Airlines
Wed 31/1211:20SYD - SDF
2 stops26h 34mUnited Airlines
Deal found 9/11$2,858
Sun 16/1109:15SDF - SYD
2 stops31h 30mAir New Zealand
Sun 23/1107:45SYD - SDF
2 stops45h 40mAir New Zealand
Deal found 9/11$2,959
Sun 16/1108:00SDF - SYD
2 stops33h 15mUnited Airlines
Sun 23/1111:50SYD - SDF
1 stop26h 07mUnited Airlines
Deal found 9/11$3,235
Sun 30/1114:02SDF - SYD
2 stops24h 58mUnited Airlines
Sun 7/1211:50SYD - SDF
1 stop24h 04mUnited Airlines
Deal found 9/11$3,241
Tue 16/1215:40SDF - SYD
2 stops25h 25mAir New Zealand
Fri 26/1211:45SYD - SDF
2 stops24h 14mAir New Zealand
Deal found 10/11$3,638
Tue 16/1215:33SDF - SYD
2 stops25h 42mUnited Airlines
Fri 26/1211:50SYD - SDF
1 stop24h 09mUnited Airlines
Deal found 10/11$3,699
Sun 30/1107:00SDF - SYD
3 stops34h 35mAir Canada
Sun 7/1211:20SYD - SDF
2 stops26h 50mAir Canada
Deal found 9/11$4,021
Sun 16/1116:26SDF - SYD
1 stop22h 29mQantas Airways
Sun 23/1114:05SYD - SDF
1 stop19h 34mQantas Airways
Deal found 9/11$4,281
Wed 24/1213:46SDF - SYD
1 stop25h 09mQantas Airways
Wed 31/1214:05SYD - SDF
1 stop23h 29mQantas Airways
Deal found 9/11$4,358
Sun 16/1109:00SDF - SYD
2 stops43h 15mMultiple Airlines
Sun 23/1111:20SYD - SDF
3 stops41h 57mMultiple Airlines
Deal found 9/11$4,514
Sun 16/1109:00SDF - SYD
3 stops32h 35mAir Canada
Sun 23/1111:20SYD - SDF
3 stops27h 09mAir Canada
Deal found 9/11$4,963
Wed 24/1213:46SDF - SYD
2 stops29h 09mMultiple Airlines
Wed 31/1208:30SYD - SDF
3 stops29h 04mMultiple Airlines
Deal found 9/11$5,408

Cheapflights Fare Finder

 
Customise your flight search to find flights from Louisville to Sydney 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 647,157 searches. Data last updated 11 November 2025.
Use the filters below to find and compare flights from Louisville to Sydney that are best for you.

Fly from

Louisville

Fly to

Sydney

Route

Depart

Return

Price

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 4/5

10:10-06:35

2 stops30h 25m

Sydney Kingsford Smith

Sun 17/5

09:25-21:37

2 stops26h 12m

$2,069

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 16/2

16:31-08:30

2 stops23h 59m

Sydney Kingsford Smith

Fri 20/2

10:40-23:50

2 stops29h 10m

$2,069

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 9/4

14:59-06:35

2 stops25h 36m

Sydney Kingsford Smith

Mon 20/4

09:25-19:01

2 stops23h 36m

$2,069

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 19/3

06:00-06:05

2 stops33h 05m

Sydney Kingsford Smith

Sun 5/4

09:25-23:59

2 stops28h 34m

$2,069

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 19/3

15:50-07:00

1 stop24h 10m

Sydney Kingsford Smith

Sun 5/4

10:20-22:32

2 stops26h 12m

$2,320

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 4/5

14:35-08:00

2 stops27h 25m

Sydney Kingsford Smith

Sun 17/5

12:10-17:30

1 stop19h 20m

$2,757

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 24/12

09:05-09:05

2 stops32h 00m

Sydney Kingsford Smith

Wed 31/12

11:50-19:59

1 stop24h 09m

$2,858

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 8/5

20:30-06:55

1 stop20h 25m

Sydney Kingsford Smith

Fri 22/5

12:10-17:34

1 stop19h 24m

$2,903

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 9/4

20:30-06:55

1 stop20h 25m

Sydney Kingsford Smith

Mon 20/4

12:10-19:43

1 stop21h 33m

$3,171

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 15/12

15:40-09:05

2 stops25h 25m

$1,657

Flights are sorted by cheapest return flights first.

Deals found on 9/11

Showing 1-10 of 14 results
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Best time to book a flight from Louisville to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Louisville with our price prediction graph.
Estimated return 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 Sydney

What is the cheapest month to book a flight from Louisville to Sydney?

Currently, October is the cheapest month in which you can book a flight from Louisville to Sydney (average of $599). Flying from Louisville to Sydney in January is currently the most expensive (average of $1,653). 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.

How much does it cost for a return flight from Louisville to Sydney?

Related info for your journey

Find useful and relevant information for your journey from Louisville to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Louisville to Sydney?

    There are many flights that can get you from Louisville to Sydney in 30h 25m. Fly via Delta to get the fastest option. Louisville and Sydney are separated by a distance of 14948 km.

  • Can I find deals for flights from Louisville to Sydney that include hotel bookings?

    Yes. In addition to deals on Louisville to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Louisville to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to Sydney.

  • Can I find deals for business class flights from Louisville to Sydney?

    Yes. Cheapflights offers flight deals from Louisville to Sydney 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 Sydney?

    Currently, October is the cheapest month in which you can book a flight from Louisville to Sydney (average of $599). Flying from Louisville to Sydney in January is currently the most expensive (average of $1,653). 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

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Penrith
Terrigal
Manly
Randwick
Lithgow
Coogee
Leura
Bondi Beach
Cronulla

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Louisville to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Nashville to Sydney flights
Cincinnati to Sydney flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Louisville to Sydney?

Cheapflights helps you search for flights from Louisville to Sydney via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Louisville to Sydney?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Louisville to Sydney for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Louisville to Sydney with no change fees?

Certainly. Search results for flights to Sydney from Louisville shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Louisville to Sydney become cheaper?

Yes, Cheapflights offers price alerts on Louisville to Sydney flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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