SDF - SYD

$663 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 2/1. 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 round-trip 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 round-trip flight deals from Louisville to Sydney

Sat, Oct 25 - Fri, Nov 7
United Airlines Logo
3:37 pm - 7:00 amSDF-SYD
24h 23m1 stop
United Airlines Logo
11:50 am - 7:54 pmSYD-SDF
24h 04m1 stop
$1,124United Airlines
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Sat, Oct 25 - Fri, Nov 7
United Airlines Logo
5:48 pm - 9:15 amSDF-SYD
24h 27m2 stops
United Airlines Logo
11:20 am - 7:54 pmSYD-SDF
24h 34m2 stops
$1,184United Airlines
Find Deal
Sat, Oct 25 - Fri, Nov 7
United Airlines Logo
3:37 pm - 7:00 amSDF-SYD
24h 23m1 stop
United Airlines Logo
12:10 pm - 8:44 pmSYD-SDF
24h 34m2 stops
$1,188United Airlines
Find Deal
Wed, Mar 4 - Tue, Mar 10
Air New Zealand Logo
9:15 am - 8:45 amSDF-SYD
31h 30m2 stops
Air New Zealand Logo
7:15 pm - 9:30 pmSYD-SDF
41h 15m2 stops
$1,286Air New Zealand
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Sat, Oct 4 - Sat, Oct 11
Delta Logo
6:00 am - 6:35 amSDF-SYD
34h 35m2 stops
Delta Logo
10:25 am - 8:15 pmSYD-SDF
24h 50m2 stops
$1,405Delta
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Tue, Dec 2 - Tue, Dec 16
Qantas Airways Logo
4:26 pm - 6:55 amSDF-SYD
22h 29m1 stop
Qantas Airways Logo
2:05 pm - 5:38 pmSYD-SDF
19h 33m1 stop
$1,999Qantas Airways
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Wed, Mar 4 - Tue, Mar 10
Multiple Airlines Logo
9:35 am - 9:35 amSDF-SYD
32h 00m3 stops
Multiple Airlines Logo
10:20 am - 9:30 pmSYD-SDF
26h 10m2 stops
$2,024Multiple Airlines
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Tue, Dec 2 - Tue, Dec 16
Multiple Airlines Logo
10:51 am - 7:25 amSDF-SYD
28h 34m3 stops
Multiple Airlines Logo
1:00 pm - 9:58 pmSYD-SDF
24h 58m2 stops
$2,115Multiple Airlines
Find Deal
Mon, Oct 13 - Mon, Oct 20
Qantas Airways Logo
6:17 pm - 6:55 amSDF-SYD
21h 38m1 stop
Qantas Airways Logo
1:10 pm - 5:27 pmSYD-SDF
19h 17m1 stop
$2,187Qantas Airways
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Fri, Feb 20 - Sat, Feb 28
Air New Zealand Logo
3:30 pm - 8:45 amSDF-SYD
25h 15m2 stops
Air New Zealand Logo
7:15 pm - 9:59 pmSYD-SDF
42h 44m2 stops
$2,874Air New Zealand
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $1,124 (round-trip)
Delta
Best reviews • 7.9 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 round-trip
$1,124
Overall average: $1,429
United Airlines
Sat 10/25Fri 11/7
SDF - SYD • 1 stop
Cheapest one-way
$663
Delta
Sun 2/1
SDF - SYD • 2 stops
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KAYAK searches 100s 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’s the cheapest day of the week to fly from Louisville to Sydney?

The average price of all round-trip flights from Louisville to Sydney clicked on KAYAK for each day over the last 12 months.

For Louisville to Sydney, Wednesday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Sydney back to Louisville, the best deals are generally found on Sunday, with Saturday being the most expensive.

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 $1,110 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $1,782 and $1,740 respectively.

Good to know

Low seasonNovember
Cheapest flight$663
Best time to beat the crowds with an average 15% drop in price.
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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 $663 for a one-way ticket and $1,124 for a round-trip.

  • Do I need a passport to fly between Louisville and Sydney?

    Yes, you’ll need a passport to travel to Sydney from Louisville.

  • 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.

  • Which is the best airline for flights from Louisville to Sydney, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Louisville to Sydney are Delta and United Airlines. With an average price for the route of $1,409 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,234 and an overall rating of 7.4.

  • 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 round-trip ticket. You could then fly to Sydney with an airline and back to Louisville with another airline. Booking your flights between Louisville and SYD can sometimes prove cheaper using this method.

  • 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 airlines 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.
7.9
DeltaOverall score based on 7954 reviews
8.2Boarding
8.5Crew
7.9Entertainment
7.3Food
7.9Comfort
Airline reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

10.0 ExcellentAnonymous, Sep 2025CLT - BOS
Read more Delta reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

The food was terrible especially for a 15 hour international flight. The crew was unpleasant as well.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Quick check in. Everything went smooth. I don't know what can be done about airline food.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Nothing special. The crew never went out of their way for anything.

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

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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