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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
24 Apr — 1 May1
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 25 March 2026.

Wed 10/609:30
SDF
-
SYD
2 stops31h 25m
United Airlines
Wed 17/609:30
SYD
-
SDF
2 stops26h 45m
United Airlines
Deal found 23/3$1,768
Tue 23/608:11
SDF
-
SYD
2 stops32h 39m
Delta
Tue 7/709:15
SYD
-
SDF
2 stops23h 58m
Delta
Deal found 22/3$1,883
Mon 23/310:13
SDF
-
SYD
2 stops30h 12m
Delta
Thu 26/313:15
SYD
-
SDF
2 stops35h 13m
Delta
Deal found 22/3$1,894
Thu 7/515:37
SDF
-
SYD
2 stops25h 18m
United Airlines
Thu 14/509:30
SYD
-
SDF
2 stops24h 47m
United Airlines
Deal found 23/3$1,911
Thu 25/607:05
SDF
-
SYD
2 stops33h 45m
Delta
Tue 7/709:15
SYD
-
SDF
2 stops23h 58m
Delta
Deal found 22/3$1,966
Wed 24/619:51
SDF
-
SYD
2 stops44h 59m
Delta
Tue 7/709:15
SYD
-
SDF
2 stops23h 58m
Delta
Deal found 22/3$1,992
Wed 20/509:21
SDF
-
SYD
1 stop32h 09m
Multiple Airlines
Fri 29/517:50
SYD
-
SDF
1 stop39h 36m
Multiple Airlines
Deal found 22/3$2,023
Tue 23/608:00
SDF
-
SYD
3 stops33h 00m
United Airlines
Tue 7/709:30
SYD
-
SDF
2 stops24h 31m
United Airlines
Deal found 22/3$2,026
Thu 25/607:49
SDF
-
SYD
2 stops33h 01m
Delta
Sun 5/709:15
SYD
-
SDF
2 stops37h 42m
Delta
Deal found 22/3$2,032
Sat 27/615:41
SDF
-
SYD
2 stops25h 19m
United Airlines
Sat 4/710:20
SYD
-
SDF
2 stops27h 45m
United Airlines
Deal found 22/3$2,038

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 25 March 2026.

Round-trip from

$1,768

One-way from

$823

Popular in

March

Cheapest in

November

Average price

$2,947
United Airlines
  • United Airlines
  • 10/6-17/6
  • 4 total stops
  • 58h 10m total
  • Louisville to Sydney
Search Deals
Delta
  • Delta
  • 16/5
  • 2 total stops
  • 33h 00m total
  • Louisville to Sydney
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($412 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($106 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
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 25 March 2026.
Use the filters below to find and compare flights from Louisville to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 10/6

15:25-07:00

2 stops25h 35m

Sydney Kingsford Smith

Wed 17/6

10:20-20:23

2 stops24h 03m

$1,768

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 9/6

14:05-07:00

2 stops26h 55m

Sydney Kingsford Smith

Wed 17/6

09:30-20:23

2 stops24h 53m

$1,768

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 27/8

15:41-06:55

2 stops25h 14m

Sydney Kingsford Smith

Wed 2/9

09:30-20:36

2 stops25h 06m

$2,038

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 2/5

15:30-06:55

2 stops25h 25m

Sydney Kingsford Smith

Wed 6/5

09:30-20:00

2 stops24h 30m

$2,038
Cheapest one-way

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 16/5

07:05-06:50

2 stops33h 45m

$823

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 22/4

06:04-06:50

2 stops34h 46m

$938

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 22/4

11:16-16:00

3 stops38h 44m

$1,719
Fastest single journey

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 16/5

19:55-06:55

1 stop21h 00m

$1,881

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 16/5

13:43-09:20

3 stops29h 37m

$1,917

Flights are sorted by cheapest return flights first.

Deals found on 21/3

Sorted by cheapest first

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 $542). Flying from Louisville to Sydney in January is currently the most expensive (average of $1,650). 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 $542). Flying from Louisville to Sydney in January is currently the most expensive (average of $1,650). 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
Penrith
Terrigal
Lithgow
Katoomba
Manly
Bondi Beach
Coogee
Cronulla
Leura
Randwick

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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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