SDF - SYD

$841 Find Cheap Flights from Louisville to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 25/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Louisville to Sydney, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Louisville to Sydney, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Louisville to Sydney (SDF-SYD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Louisville to Sydney that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Louisville to Sydney

Wed, 24 Sep - Sun, 12 Oct
United Airlines Logo
13:59 - 07:00SDF-SYD
27h 01m2 stops
United Airlines Logo
10:30 - 19:57SYD-SDF
24h 27m2 stops
$1,630United Airlines
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Wed, 24 Sep - Sun, 12 Oct
Delta Logo
09:30 - 06:35SDF-SYD
31h 05m2 stops
Delta Logo
10:25 - 22:54SYD-SDF
27h 29m2 stops
$1,632Delta
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Sat, 1 Nov - Sat, 8 Nov
United Airlines Logo
08:00 - 09:15SDF-SYD
34h 15m2 stops
United Airlines Logo
11:50 - 21:57SYD-SDF
26h 07m1 stop
$1,855United Airlines
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Sun, 26 Oct - Sun, 2 Nov
 Logo
20:10 - 19:55SDF-SYD
32h 45m2 stops
 Logo
05:20 - 14:02SYD-SDF
47h 42m3 stops
$2,325
Find Deal
Sun, 26 Oct - Sun, 2 Nov
 Logo
20:10 - 07:25SDF-SYD
44h 15m1 stop
 Logo
17:45 - 19:15SYD-SDF
41h 30m1 stop
$2,351
Find Deal
Sat, 1 Nov - Sat, 8 Nov
Qantas Airways Logo
18:46 - 06:55SDF-SYD
21h 09m1 stop
Qantas Airways Logo
14:05 - 17:38SYD-SDF
19h 33m1 stop
$3,155Qantas Airways
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Sat, 27 Dec - Tue, 20 Jan
Qantas Airways Logo
13:46 - 06:55SDF-SYD
25h 09m1 stop
Qantas Airways Logo
14:05 - 17:24SYD-SDF
19h 19m1 stop
$3,473Qantas Airways
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Thu, 13 Nov - Mon, 17 Nov
Air Canada Logo
15:20 - 09:35SDF-SYD
26h 15m2 stops
Air Canada Logo
11:20 - 09:59SYD-SDF
38h 39m3 stops
$3,853Air Canada
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Sat, 1 Nov - Sat, 8 Nov
Air Canada Logo
17:57 - 09:35SDF-SYD
48h 38m3 stops
Air Canada Logo
11:20 - 20:44SYD-SDF
25h 24m2 stops
$4,032Air Canada
Find Deal
Sat, 4 Oct - Sat, 11 Oct
American Airlines Logo
10:00 - 05:55SDF-SYD
29h 55m1 stop
American Airlines Logo
10:10 - 17:53SYD-SDF
22h 43m2 stops
$4,599American Airlines
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $1,630 (return)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
April
Cheapest • 17% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
$1,630
Overall average: $1,972
United Airlines
Wed 24/9Sun 12/10
SDF - SYD • 2 stops
Cheapest one-way flight
$841
Delta
Thu 25/12
SDF - SYD • 2 stops
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Sydney!
Booking Insights

KAYAK's insights & trends for Louisville to Sydney flights

Get data-powered insights and trends into flights from Louisville to Sydney to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Louisville to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Louisville to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Louisville to Sydney is April, where tickets cost $1,674 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $2,818 and $2,402 respectively.

Good to know

Low seasonNovember
Cheapest flight$841
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly and prices are also 1% lower on average.
Flight from Louisville to Sydney

When to book flights from Louisville to Sydney

Are your dates flexible? Find out the best times to travel from Louisville to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Louisville to Sydney

  • What is the cheapest flight from Louisville to Sydney?

    In the last 3 days, the lowest price for a flight from Louisville to Sydney was $558 for a one-way ticket and $1,081 for a return.

  • Which airports will I be using when flying from Louisville to Sydney?

    When flying out of Louisville you will be using Louisville Intl. You will be landing at Sydney, also known as Sydney Kingsford Smith.

  • Which aircraft models fly most regularly from Louisville to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Louisville to Sydney?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Louisville and Sydney, with Star Alliance being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Louisville to Sydney?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Louisville to Sydney.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Louisville to Sydney?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney from Louisville is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Louisville to Sydney?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Sydney with an airline and back to Louisville with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Louisville to Sydney?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sydney from Louisville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Louisville to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Louisville to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Louisville to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8937 reviews
8.1Crew
6.6Food
7.7Boarding
7.3Comfort
7.1Entertainment
Airline reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

2.0 MediocreAnonymous, Sept 2025SFO - MEX
Read more United Airlines reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Tastless food and too obvious lack of enthusiasm for service in the economy vesus business class

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

Everything you need to know for your flight from Louisville to Sydney

Information on your arrival and departure airports

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