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Cheap flights from Louisville to Sydney from $831

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 16/5. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SYD
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 12 December 2025.

Wed 24/1213:52SDF - SYD
2 stops26h 38mDelta
Sat 27/1214:15SYD - SDF
2 stops24h 48mDelta
Deal found 11/12$2,352
Wed 24/1210:50SDF - SYD
2 stops30h 15mUnited Airlines
Sat 27/1211:50SYD - SDF
1 stop26h 04mUnited Airlines
Deal found 11/12$2,549
Mon 15/1209:31SDF - SYD
2 stops31h 14mAir New Zealand
Wed 17/1219:15SYD - SDF
2 stops42h 39mAir New Zealand
Deal found 11/12$4,204
Wed 24/1206:00SDF - SYD
2 stops36h 30mAir New Zealand
Sat 27/1218:50SYD - SDF
3 stops41h 09mAir New Zealand
Deal found 11/12$4,636
Mon 15/1218:34SDF - SYD
2 stops25h 21mQantas Airways
Wed 17/1214:05SYD - SDF
1 stop19h 33mQantas Airways
Deal found 11/12$5,529
Wed 24/1213:46SDF - SYD
1 stop25h 09mQantas Airways
Sat 27/1214:05SYD - SDF
1 stop21h 37mQantas Airways
Deal found 11/12$5,719

Find 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 12 December 2025.

Round-trip from

$1,753

One-way from

$831

Popular in

December

Cheapest in

November

Average price

$2,661
United Airlines
  • United Airlines
  • 5/4-13/4
  • 4 total stops
  • 52h 37m total
  • Louisville to Sydney
Search Deals
Delta
  • Delta
  • 16/5
  • 2 total stops
  • 24h 35m total
  • Louisville to Sydney
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($446 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($87 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 12 December 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

Sun 5/4

15:25-07:00

2 stops25h 35m

Sydney Kingsford Smith

Mon 13/4

09:30-22:32

2 stops27h 02m

$1,753

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 19/3

15:30-07:00

1 stop24h 30m

Sydney Kingsford Smith

Sun 5/4

09:30-22:32

2 stops27h 02m

$1,822

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 17/1

14:05-09:15

2 stops27h 10m

Sydney Kingsford Smith

Sat 24/1

11:20-22:30

2 stops27h 10m

$1,903

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 7/2

15:30-07:00

1 stop23h 30m

Sydney Kingsford Smith

Wed 11/2

11:50-19:54

1 stop24h 04m

$1,909

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 10/6

09:32-07:00

2 stops31h 28m

Sydney Kingsford Smith

Wed 17/6

10:20-09:45

2 stops37h 25m

$2,091

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 9/6

09:32-07:00

2 stops31h 28m

Sydney Kingsford Smith

Wed 17/6

10:20-19:35

2 stops47h 15m

$2,122

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 16/5

16:00-06:35

2 stops24h 35m

$831

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 16/5

20:30-06:55

1 stop20h 25m

$1,673

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 16/5

13:55-07:20

3 stops51h 25m

$2,062

Flights are sorted by cheapest return flights first.

Deals found on 10/12

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 $568). Flying from Louisville to Sydney in January is currently the most expensive (average of $1,621). 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 25h 35m. Fly via United Airlines 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 $568). Flying from Louisville to Sydney in January is currently the most expensive (average of $1,621). 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.
Cincinnati to Sydney flights
Nashville 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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