SDF - SYD

$648 Find Cheap Flights from Louisville to Sydney - Compare and Save

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 7/25. 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, 0 bags

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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$1,191
Typical prices: $1,103-$1,232
Delta
Tue 8/4Tue 8/11
SDF - SYD • 2 stops
Cheapest one-way
$648
United Airlines
Sat 7/25
SDF - SYD • 2 stops
Top airlines
Cheapest • from $1,191 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Louisville and Sydney. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $2,991 (round-trip)
Shortest trip • 23h 21m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Sydney!
Flight Deals
Booking Insights
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

Tue, Aug 4 - Tue, Aug 11
Delta Logo
5:25 pm - 6:50 am
SDF
-
SYD
23h 25m
2 stops
Delta Logo
9:15 am - 11:56 pm
SYD
-
SDF
28h 41m
2 stops
$1,191Delta
Thu, Aug 6 - Wed, Aug 19
Delta Logo
1:17 pm - 6:50 am
SDF
-
SYD
27h 33m
2 stops
Delta Logo
9:15 am - 9:33 pm
SYD
-
SDF
26h 18m
2 stops
$1,225Delta
Thu, Aug 6 - Wed, Aug 19
Multiple Airlines Logo
7:30 pm - 6:55 am
SDF
-
SYD
21h 25m
1 stop
Multiple Airlines Logo
12:00 pm - 6:18 pm
SYD
-
SDF
20h 18m
1 stop
$1,250Multiple Airlines
Thu, Aug 6 - Wed, Aug 19
Multiple Airlines Logo
1:19 pm - 7:30 am
SDF
-
SYD
28h 11m
2 stops
Multiple Airlines Logo
12:00 pm - 6:18 pm
SYD
-
SDF
20h 18m
1 stop
$1,254Multiple Airlines
Fri, Aug 7 - Fri, Aug 14
United Airlines Logo
2:10 pm - 7:00 am
SDF
-
SYD
26h 50m
2 stops
United Airlines Logo
10:20 am - 7:07 pm
SYD
-
SDF
22h 47m
2 stops
$1,292United Airlines
Tue, Jul 21 - Tue, Jul 28
Qantas Airways Logo
7:50 pm - 6:55 am
SDF
-
SYD
21h 05m
1 stop
Qantas Airways Logo
12:00 pm - 5:30 pm
SYD
-
SDF
19h 30m
1 stop
$1,305Qantas Airways
Wed, Aug 26 - Sat, Sep 5
United Airlines Logo
3:25 pm - 7:00 am
SDF
-
SYD
49h 35m
2 stops
United Airlines Logo
9:30 am - 7:59 pm
SYD
-
SDF
24h 29m
2 stops
$1,306United Airlines
Wed, Aug 26 - Sat, Sep 5
United Airlines Logo
3:25 pm - 7:00 am
SDF
-
SYD
49h 35m
2 stops
United Airlines Logo
9:30 am - 7:59 pm
SYD
-
SDF
24h 29m
2 stops
$1,307United Airlines
Wed, Aug 26 - Sat, Sep 5
United Airlines Logo
3:25 pm - 7:00 am
SDF
-
SYD
49h 35m
2 stops
United Airlines Logo
9:30 am - 10:15 pm
SYD
-
SDF
26h 45m
2 stops
$1,308United Airlines
Tue, Jul 21 - Tue, Jul 28
Multiple Airlines Logo
7:50 pm - 6:55 am
SDF
-
SYD
21h 05m
1 stop
Multiple Airlines Logo
12:00 pm - 5:30 pm
SYD
-
SDF
19h 30m
1 stop
$1,354Multiple Airlines
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.

How much is a round-trip flight from Louisville to Sydney?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Louisville to Sydney departing in August.

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 March, where tickets cost $0 (return) on average. On the other hand, the most expensive months are January and December, where the average cost of round-trip tickets is $2,844 and $1,792 respectively.

Good to know

Low seasonFebruary
Cheapest flight$648
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 13% 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 5 days, the lowest price for a flight from Louisville to Sydney was $648 for a one-way ticket and $1,191 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, and Star Alliance are the airline alliances operating flights between Louisville and Sydney, with SkyTeam 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 $1,351 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,330 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.
7.8
DeltaOverall score based on 8451 reviews
8.1Boarding
7.8Entertainment
7.2Food
8.5Crew
7.8Comfort
Airline reviews

It was as good as it could be. Flying is not a pleasant experience these days.

8.0 ExcellentMark, Jun 2026
LAX - ORD
Read more Delta reviews

It was as good as it could be. Flying is not a pleasant experience these days.

The plane was old and thus the seats were not good. No cushion left whatsoever, and it all was a bit worn out.

I was in Comfort and we didn’t get any drinks, chips or anything! First Class got full service on the flight and Comfort got nothing. Seat was horrible and uncomfortable

My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.

The crew was very inconsiderate and rude. My flight was scheduled to depart at 6:00am. I received a call from the crew at 5:40am, asking if I was going to make the flight because I was the only one that hasn't boarded yet and boarding ends at 5:50am. I let them know that I will be at the gate in a few minutes, before the 5:50am cutoff. When I arrived at the gate at 5:45am the gate was closed. Departing early on last minute notice without having all passengers on board is inconsiderate and unprofessional.

The staff was fine. The plane was extremely tight, and I paid for the wifi and it did not work at all. I was actually going to ask for a refund.

Bathrooms dirty sinks clogged. No one seemed to clean them. Plane very old

Left on time and arrived early this extending our 31 minute transfer. Bags made it also!

The crew was very polite as I have a few handicaps and everything was made pleasant. Check-in was easy as I was brought on board by the wheelchair assistant. One flight attendant did make sure my personal item was carefully stored under the seat in front of me. I was made to feel welcome as a customer as I made my first trip with a few disabilities. Entertainment and wifi worked quite well. The only food service were snacks and drinks. Those were okay. Overall it was a very smooth flight and encouraged me to use Delta again.

It wasn't really their fault it was the horrible winds and we just got unlucky.

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

My flight time was changed without any notification to me which ruined my time sensitive plans so I ended up completely changing my travel plans and no reimbursement.

Terrible. Our first time back on United for 10 years, the seats in Polaris class are small and uncomfortable. They have squished too many people in to get more $$$. The staff are not friendly and not wanting to accommodate. I asked for two salads rather than a main meal and was advised no we wont do that. Then asked what I would like for breakfast and given something else anyway. I will not be flying United International anytime soon.

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

Smooth flight. As always dinner could have been more generous. Breakfast was great.

Moody attendants that can barely look up at the passengers. I’m all for people having an off day, but you can tell some Untied Airlines Employees have lost their zeal for their jobs

Great checkin experience and flight crew were very friendly and helpful

Staff did not care, and very clearly did not want to be serving passengers. Requests were ignored repeatedly. Toilets filthy. Bins were just trash bags hung around the place that were never emptied. It was a challenge to even get a glass of water on a 14 hour flight.

Got automatically assigned a middle seat, unless I fork out extra money for seat assigment.

Flight was diverted to Canberra because Not enough fuel to circle on Sydney’s skies waiting for showers to pass. After that everything went wrong. It took forever to put fuel. Once back rolling, we stopped short of takeoff because crew had reached maximum work hours per shift. Back to gate we waited and waited in the plane with no water and no food - a total of 4 hours. Received contrasting news about the follow up of our trip. Finally we disembarked but our luggage could not be processed there as not enough custom agents. We ended up on buses and arrived at Sydney airports after a 3 hours trip. There we had to queue in line with 240 more passengers to file a lost luggage claim. We received the luggage after 48 hours, many of which spent holding with non-existent United customer service. Never able to speak to an actual person during those long phone calls. Finally on a chatline I could talk to a baggage agent, who filed another report as our luggage did not appear anywhere in their system. Thus it was surprising to get it back.

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

Information on your arrival and departure airports