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Cheap flights from Louisville to Sydney from $821

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
20 Feb — 27 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 21 January 2026.

Sat 14/209:15
SDF
-
SYD
1 stop29h 45m
United Airlines
Wed 18/211:50
SYD
-
SDF
1 stop25h 56m
United Airlines
Deal found 19/1$1,891
Thu 19/315:30
SDF
-
SYD
1 stop24h 30m
United Airlines
Sun 5/409:30
SYD
-
SDF
2 stops43h 01m
United Airlines
Deal found 20/1$2,060
Wed 10/610:42
SDF
-
SYD
3 stops39h 13m
Multiple Airlines
Wed 17/614:05
SYD
-
SDF
2 stops46h 11m
Multiple Airlines
Deal found 20/1$2,693
Tue 9/618:01
SDF
-
SYD
3 stops47h 44m
Multiple Airlines
Wed 17/614:05
SYD
-
SDF
2 stops46h 11m
Multiple Airlines
Deal found 20/1$2,724
Wed 26/816:50
SDF
-
SYD
2 stops25h 10m
Qantas Airways
Sat 5/912:00
SYD
-
SDF
1 stop22h 01m
Qantas Airways
Deal found 20/1$2,754
Sat 10/1010:36
SDF
-
SYD
3 stops37h 54m
Multiple Airlines
Sat 17/1022:20
SYD
-
SDF
2 stops39h 35m
Multiple Airlines
Deal found 20/1$2,767
Thu 19/218:12
SDF
-
SYD
2 stops47h 23m
Multiple Airlines
Thu 26/221:55
SYD
-
SDF
3 stops35h 26m
Multiple Airlines
Deal found 19/1$2,800
Sat 10/1016:50
SDF
-
SYD
1 stop23h 05m
Qantas Airways
Sat 17/1013:00
SYD
-
SDF
1 stop19h 27m
Qantas Airways
Deal found 19/1$2,818
Fri 18/918:44
SDF
-
SYD
1 stop22h 11m
Multiple Airlines
Fri 25/921:25
SYD
-
SDF
2 stops25h 36m
Multiple Airlines
Deal found 19/1$2,828

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 21 January 2026.

Round-trip from

$1,891

One-way from

$821

Popular in

December

Cheapest in

November

Average price

$2,593
United Airlines
  • United Airlines
  • 14/2-18/2
  • 2 total stops
  • 55h 41m total
  • Louisville to Sydney
Search Deals
Delta
  • Delta
  • 16/5
  • 2 total stops
  • 33h 15m total
  • Louisville to Sydney
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($314 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($76 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 21 January 2026.
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

Thu 5/3

15:30-07:00

1 stop23h 30m

Sydney Kingsford Smith

Thu 12/3

11:50-21:59

1 stop25h 09m

$1,891

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 19/2

15:30-07:00

1 stop23h 30m

Sydney Kingsford Smith

Thu 26/2

11:50-19:51

1 stop24h 01m

$1,891

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 13/2

15:30-09:05

2 stops25h 35m

Sydney Kingsford Smith

Mon 16/2

11:50-19:51

1 stop24h 01m

$1,891

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 14/2

09:15-07:00

1 stop29h 45m

Sydney Kingsford Smith

Wed 18/2

11:50-21:46

1 stop25h 56m

$1,891

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 10/6

07:00-06:35

2 stops33h 35m

Sydney Kingsford Smith

Wed 17/6

09:15-19:01

2 stops23h 46m

$1,897

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 1/4

12:34-07:50

2 stops28h 16m

Sydney Kingsford Smith

Wed 8/4

09:15-18:49

2 stops23h 34m

$1,897

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 9/6

15:20-07:00

2 stops25h 40m

Sydney Kingsford Smith

Wed 17/6

09:30-20:14

2 stops24h 44m

$1,897

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 16/5

07:20-06:35

2 stops33h 15m

$821

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 24/4

15:15-06:35

2 stops25h 20m

$821

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 19/2

15:30-07:00

1 stop23h 30m

$866

Flights are sorted by cheapest return flights first.

Deals found on 19/1

Showing 1-10 of 16 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 $561). Flying from Louisville to Sydney in January is currently the most expensive (average of $1,603). 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.

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 23h 30m. 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 $561). Flying from Louisville to Sydney in January is currently the most expensive (average of $1,603). 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
Manly
Katoomba
Terrigal
Lithgow
Leura
Coogee
Cronulla
Randwick
Bondi Beach

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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