$720 Cheap Flights from Louisville (SDF) to Adelaide (ADL)

View $720 flight on Fri, Oct 31, 2025Opens in a new window

Popular airlines from Louisville Intl. Airport (SDF) to Adelaide, SA Airport (ADL)

Cheap Flights from Louisville to Adelaide (SDF-ADL)

Prices were available within the past 7 days and start at $720 for one-way flights and $1,600 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Dec 15 - Mon, Dec 22
SDF
Louisville
ADL
Adelaide
$1,600 Roundtrip, found 2 days ago
$1,600
Roundtrip
found 2 days ago
Select United flight, departing Mon, Dec 15 from Louisville to Adelaide, returning Mon, Dec 22, priced at $1,600 found 2 days ago
United
Tue, Sep 30 - Tue, Oct 7
SDF
Louisville
ADL
Adelaide
$1,613 Roundtrip, found 8 hours ago
$1,613
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Sep 30 from Louisville to Adelaide, returning Tue, Oct 7, priced at $1,613 found 8 hours ago
United
Sat, Dec 13 - Sat, Dec 20
SDF
Louisville
ADL
Adelaide
$1,619 Roundtrip, found 2 days ago
$1,619
Roundtrip
found 2 days ago
Select United flight, departing Sat, Dec 13 from Louisville to Adelaide, returning Sat, Dec 20, priced at $1,619 found 2 days ago
United
Mon, Dec 15 - Thu, Dec 25
SDF
Louisville
ADL
Adelaide
$1,629 Roundtrip, found 2 days ago
$1,629
Roundtrip
found 2 days ago
Select United flight, departing Mon, Dec 15 from Louisville to Adelaide, returning Thu, Dec 25, priced at $1,629 found 2 days ago
American Airlines
Sat, Sep 27 - Thu, Oct 9
SDF
Louisville
ADL
Adelaide
$1,656 Roundtrip, found 8 hours ago
$1,656
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Sat, Sep 27 from Louisville to Adelaide, returning Thu, Oct 9, priced at $1,656 found 8 hours ago
United
Mon, Dec 15 - Mon, Dec 22
SDF
Louisville
ADL
Adelaide
$1,790 Roundtrip, found 2 days ago
$1,790
Roundtrip
found 2 days ago
Select United flight, departing Mon, Dec 15 from Louisville to Adelaide, returning Mon, Dec 22, priced at $1,790 found 2 days ago
United
Mon, Dec 15 - Mon, Dec 22
SDF
Louisville
ADL
Adelaide
$1,796 Roundtrip, found 2 days ago
$1,796
Roundtrip
found 2 days ago
Select United flight, departing Mon, Dec 15 from Louisville to Adelaide, returning Mon, Dec 22, priced at $1,796 found 2 days ago
Air New Zealand
Fri, Dec 12 - Sun, Dec 21
SDF
Louisville
ADL
Adelaide
$2,058 Roundtrip, found 2 days ago
$2,058
Roundtrip
found 2 days ago
Select Air New Zealand flight, departing Fri, Dec 12 from Louisville to Adelaide, returning Sun, Dec 21, priced at $2,058 found 2 days ago
Qantas Airways
Tue, Sep 30 - Tue, Oct 7
SDF
Louisville
ADL
Adelaide
$2,612 Roundtrip, found 8 hours ago
$2,612
Roundtrip
found 8 hours ago
Select Qantas Airways flight, departing Tue, Sep 30 from Louisville to Adelaide, returning Tue, Oct 7, priced at $2,612 found 8 hours ago
Qatar Airways
Tue, Sep 30 - Mon, Oct 6
SDF
Louisville
ADL
Adelaide
$3,006 Roundtrip, found 8 hours ago
$3,006
Roundtrip
found 8 hours ago
Select Qatar Airways flight, departing Tue, Sep 30 from Louisville to Adelaide, returning Mon, Oct 6, priced at $3,006 found 8 hours ago
Flights from Louisville (SDF) to Adelaide (ADL)
Origin airport
Louisville Intl.
Destination airport
Adelaide
Roundtrip price
$1,599
Distance
9992 mi

Louisville to Adelaide Flights

The cheapest times to fly from Louisville to Adelaide

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Louisville to Adelaide are during the month of December. You can find some of the cheapest flights from Louisville to Adelaide with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Louisville to Adelaide

Sunday is one of the best days to book for cheap flights from Louisville to Adelaide: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Louisville to Adelaide

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Louisville to Adelaide in 2025. You can also book with separate airlines for your outbound and return journeys, from $720 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Louisville to Adelaide flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Louisville to Adelaide airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Louisville Intl. Airport (SDF) to Adelaide Airport (ADL) cost?
Lock in a cheap one-way flight from $720 or cheap return flight from $1,600 from Louisville Intl. Airport (SDF) to Adelaide Airport (ADL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Louisville Intl. Airport (SDF) to Adelaide Airport (ADL)?
December is the most affordable month to fly from SDF to ADL. Avoiding peak travel times is often the key to finding a great deal.
What is the cheapest airline that flies from Louisville Intl. Airport (SDF) to Adelaide Airport (ADL)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest SDF to ADL flight.
How many flights per day from Louisville Intl. Airport (SDF) to Adelaide Airport (ADL)?
Direct flights from Louisville Intl. Airport (SDF) to Adelaide Airport (ADL) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SDF to ADL?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Louisville Intl. Airport (SDF) to Adelaide Airport (ADL)?
To avoid possible delays on the Louisville Intl. Airport (SDF) to Adelaide Airport (ADL) route, travel before 3 PM. Departures after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Louisville Intl. Airport (SDF) to Adelaide Airport (ADL) last-minute?
Booking your ticket from SDF to ADL right before your getaway is usually more expensive. However, if you're flexible with your travel times and dates, you could land a cheap last-minute fare.
Is it cheaper to book a SDF to ADL flight and hotel package?
Compared with arranging flights and hotels separately, booking a SDF to ADL flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place takes the hassle out of planning your trip. Simply pick your flights and select from our wide range of hotels, then customize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Louisville Intl. Airport (SDF) to Adelaide Airport (ADL)?
Typically, you can cancel or modify your SDF to ADL flight. However, there may be additional charges, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need further details, head to our Customer Service portal.

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*Available to One Key members.