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Cheap flights from Louisville to Sydney from $823

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
27 Jan — 3 Feb1
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 28 December 2025.

Tue 30/1218:19SDF - SYD
2 stops25h 36mQantas Airways
Thu 1/114:05SYD - SDF
1 stop21h 37mQantas Airways
Deal found 26/12$4,736
Tue 30/1205:40SDF - SYD
3 stops35h 55mMultiple Airlines
Thu 1/121:45SYD - SDF
2 stops38h 47mMultiple Airlines
Deal found 26/12$8,506
Sat 27/1215:25SDF - SYD
1 stop23h 35mUnited Airlines
Mon 5/111:50SYD - SDF
1 stop26h 04mUnited Airlines
Deal found 26/12$10,779
Sat 27/1215:25SDF - SYD
1 stop23h 35mUnited Airlines
Sat 3/114:00SYD - SDF
2 stops40h 22mUnited Airlines
Deal found 26/12$11,245
Sat 27/1215:25SDF - SYD
1 stop23h 35mUnited Airlines
Sun 4/111:50SYD - SDF
1 stop24h 09mUnited Airlines
Deal found 26/12$12,565
Sat 27/1209:05SDF - SYD
2 stops43h 10mANA
Wed 31/1212:25SYD - SDF
2 stops40h 48mANA
Deal found 26/12$12,903
Sat 27/1215:25SDF - SYD
1 stop23h 35mUnited Airlines
Tue 30/1211:50SYD - SDF
1 stop24h 09mUnited Airlines
Deal found 26/12$14,261
Sat 27/1215:25SDF - SYD
1 stop23h 35mUnited Airlines
Wed 31/1212:10SYD - SDF
2 stops25h 44mUnited Airlines
Deal found 26/12$14,269

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 28 December 2025.

Round-trip from

$1,738

One-way from

$823

Popular in

December

Cheapest in

November

Average price

$2,637
Delta
  • Delta
  • 9/6-17/6
  • 4 total stops
  • 71h 29m total
  • Louisville to Sydney
Search Deals
Delta
  • Delta
  • 16/5
  • 2 total stops
  • 31h 00m total
  • Louisville to Sydney
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($438 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($85 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 28 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

Wed 10/6

10:15-06:35

2 stops30h 20m

Sydney Kingsford Smith

Wed 17/6

09:15-08:45

2 stops37h 30m

$1,738

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 16/3

15:05-07:25

2 stops25h 20m

Sydney Kingsford Smith

Mon 23/3

09:40-22:51

2 stops28h 11m

$1,740

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 9/6

07:00-06:35

2 stops33h 35m

Sydney Kingsford Smith

Wed 17/6

09:15-08:45

2 stops37h 30m

$1,740

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 9/2

07:00-08:30

2 stops33h 30m

Sydney Kingsford Smith

Mon 16/2

10:40-20:28

2 stops25h 48m

$1,740

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 19/3

06:00-06:05

2 stops33h 05m

Sydney Kingsford Smith

Sun 5/4

09:15-21:16

2 stops26h 01m

$1,814

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 16/3

15:30-07:00

1 stop24h 30m

Sydney Kingsford Smith

Mon 23/3

11:50-19:51

1 stop23h 01m

$1,893

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 9/2

15:30-09:05

2 stops25h 35m

Sydney Kingsford Smith

Mon 16/2

11:50-19:51

1 stop24h 01m

$1,893

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 9/2

15:30-07:00

1 stop23h 30m

Sydney Kingsford Smith

Thu 12/2

11:50-19:51

1 stop24h 01m

$1,893

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 16/5

09:35-06:35

2 stops31h 00m

$823

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 16/5

19:20-07:20

3 stops46h 00m

$1,957

Flights are sorted by cheapest return flights first.

Deals found on 26/12

Showing 1-10 of 11 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 $562). Flying from Louisville to Sydney in January is currently the most expensive (average of $1,606). 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 20m. 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 $562). Flying from Louisville to Sydney in January is currently the most expensive (average of $1,606). 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
Cronulla
Bondi Beach

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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