$577 Cheap Flights from Louisville (SDF) to Sydney (SYD)

View $577 flight on Mon, Sep 7, 2026Opens in a new window

Popular airlines from Louisville Intl. Airport (SDF) to Sydney Airport (SYD)

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Cheap Flights from Louisville to Sydney (SDF-SYD)

Prices were available within the past 7 days and start at $577 for one-way flights and $1,351 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Dec 3 - Wed, Dec 17
SDF
Louisville
SYD
Sydney
$1,351 Roundtrip, found 1 hour ago
$1,351
Roundtrip
found 1 hour ago
Select Delta flight, departing Wed, Dec 3 from Louisville to Sydney, returning Wed, Dec 17, priced at $1,351 found 1 hour ago
Delta
Thu, Nov 6 - Thu, Nov 13
SDF
Louisville
SYD
Sydney
$1,358 Roundtrip, found 12 hours ago
$1,358
Roundtrip
found 12 hours ago
Select Delta flight, departing Thu, Nov 6 from Louisville to Sydney, returning Thu, Nov 13, priced at $1,358 found 12 hours ago
Delta
Tue, Dec 2 - Tue, Dec 16
SDF
Louisville
SYD
Sydney
$1,359 Roundtrip, found 1 hour ago
$1,359
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Dec 2 from Louisville to Sydney, returning Tue, Dec 16, priced at $1,359 found 1 hour ago
United
Sat, Feb 28 - Thu, Mar 19
SDF
Louisville
SYD
Sydney
$1,362 Roundtrip, found 1 day ago
$1,362
Roundtrip
found 1 day ago
Select United flight, departing Sat, Feb 28 from Louisville to Sydney, returning Thu, Mar 19, priced at $1,362 found 1 day ago
Delta
Sun, Nov 2 - Sun, Nov 9
SDF
Louisville
SYD
Sydney
$1,365 Roundtrip, found 4 days ago
$1,365
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Nov 2 from Louisville to Sydney, returning Sun, Nov 9, priced at $1,365 found 4 days ago
Delta
Tue, Dec 2 - Tue, Dec 16
SDF
Louisville
SYD
Sydney
$1,365 Roundtrip, found 1 hour ago
$1,365
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Dec 2 from Louisville to Sydney, returning Tue, Dec 16, priced at $1,365 found 1 hour ago
United
Sat, Feb 28 - Thu, Mar 19
SDF
Louisville
SYD
Sydney
$1,368 Roundtrip, found 1 day ago
$1,368
Roundtrip
found 1 day ago
Select United flight, departing Sat, Feb 28 from Louisville to Sydney, returning Thu, Mar 19, priced at $1,368 found 1 day ago
Air New Zealand
Fri, Mar 6 - Sun, Mar 22
SDF
Louisville
SYD
Sydney
$1,553 Roundtrip, found 7 hours ago
$1,553
Roundtrip
found 7 hours ago
Select Air New Zealand flight, departing Fri, Mar 6 from Louisville to Sydney, returning Sun, Mar 22, priced at $1,553 found 7 hours ago
Qantas Airways
Mon, Sep 7 - Tue, Sep 15
SDF
Louisville
SYD
Sydney
$1,795 Roundtrip, found 13 hours ago
$1,795
Roundtrip
found 13 hours ago
Select Qantas Airways flight, departing Mon, Sep 7 from Louisville to Sydney, returning Tue, Sep 15, priced at $1,795 found 13 hours ago
American Airlines
Mon, Sep 7 - Tue, Sep 15
SDF
Louisville
SYD
Sydney
$1,798 Roundtrip, found 13 hours ago
$1,798
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Mon, Sep 7 from Louisville to Sydney, returning Tue, Sep 15, priced at $1,798 found 13 hours ago

Find the cheapest month to fly from Louisville (SDF) to Sydney (SYD)

August is typically the cheapest month to fly

From $929 - $2,282 per traveler.

Alternative airports near Sydney

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Kingsford Smith Intl. SYD. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $1,351
SYD
Kingsford Smith Intl.
Cheapest
Average driving time to city center16 min
Flights from $1,351

Frequently asked questions

How much does a flight from Louisville Intl. Airport (SDF) to Kingsford Smith Intl. Airport (SYD) cost?
Get a cheap one-way flight from $577 or cheap return flight from $1,351 from Louisville Intl. Airport (SDF) to Kingsford Smith Intl. Airport (SYD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Louisville Intl. Airport (SDF) to Kingsford Smith Intl. Airport (SYD)?
December is the cheapest month to fly from SDF to SYD. Traveling outside of peak seasons is often the key to scoring lower fares.
What is the cheapest airline that flies from Louisville Intl. Airport (SDF) to Kingsford Smith Intl. Airport (SYD)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll fly you from SDF to SYD. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Louisville Intl. Airport (SDF) to Kingsford Smith Intl. Airport (SYD)?
There aren't any daily nonstop flights departing from Louisville Intl. Airport (SDF) to Kingsford Smith Intl. Airport (SYD). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from SDF to SYD?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary 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 Kingsford Smith Intl. Airport (SYD)?
Opt for a flight from Louisville Intl. Airport (SDF) to Kingsford Smith Intl. Airport (SYD) that leaves before 3 PM to reduce the risk of cancellations. Later departures have a 22% higher chance of being canceled, on average.**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 Kingsford Smith Intl. Airport (SYD) last-minute?
Booking your flight from SDF to SYD shortly before your journey is typically more expensive. But if there's some wiggle room with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book a SDF to SYD flight and hotel package?
Compared with arranging hotels and flights separately, booking a SDF to SYD flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place will take the stress out of planning your trip. Just secure your flights and select from our extensive range of stays, then personalize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Louisville Intl. Airport (SDF) to Kingsford Smith Intl. Airport (SYD)?
Typically, it's possible to cancel or reschedule your SDF to SYD flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Louisville Intl.
Destination airport
Kingsford Smith Intl.
Airlines serving
Air Canada, Air New Zealand, All Nippon Airways, American Airlines, Delta, Japan Airlines, Korean Air, Qantas Airways, Qatar Airways, United
Roundtrip price
$1,351
Distance
9294 mi

Book with confidence

Louisville to Sydney Flights

The cheapest times to fly from Louisville to Sydney

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 Sydney are during the month of December. You can find some of the cheapest flights from Louisville to Sydney with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Louisville to Sydney

Sunday is one of the best days to book for cheap flights from Louisville to Sydney: 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 Sydney

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 Sydney in 2025. You can also book with separate airlines for your outbound and return journeys, from $577 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 Sydney 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 Sydney 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.

 

Louisville to Sydney Flights

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*Available to One Key members.