$170 Cheap Flights from Appleton (ATW) to Louisville (SDF)

View $170 flight on Tue, Apr 7, 2026Opens in a new window

Popular airlines from Appleton, WI (ATW-Appleton Intl.) to Louisville Intl. Airport (SDF)

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Cheap Flights from Appleton to Louisville (ATW-SDF)

Prices were available within the past 7 days and start at $170 for one-way flights and $249 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Apr 28 - Sat, May 2
ATW
Appleton
SDF
Louisville
$249 Roundtrip, found 7 hours ago
$249
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Tue, Apr 28 from Appleton to Louisville, returning Sat, May 2, priced at $249 found 7 hours ago
Delta
Sat, Mar 21 - Tue, Mar 24
ATW
Appleton
SDF
Louisville
$249 Roundtrip, found 5 hours ago
$249
Roundtrip
found 5 hours ago
Select Delta flight, departing Sat, Mar 21 from Appleton to Louisville, returning Tue, Mar 24, priced at $249 found 5 hours ago
United
Tue, Apr 28 - Sat, May 2
ATW
Appleton
SDF
Louisville
$249 Roundtrip, found 7 hours ago
$249
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Apr 28 from Appleton to Louisville, returning Sat, May 2, priced at $249 found 7 hours ago
United
Fri, Mar 6 - Wed, Mar 11
ATW
Appleton
SDF
Louisville
$254 Roundtrip, found 8 hours ago
$254
Roundtrip
found 8 hours ago
Select United flight, departing Fri, Mar 6 from Appleton to Louisville, returning Wed, Mar 11, priced at $254 found 8 hours ago
United
Tue, Apr 28 - Sat, May 2
ATW
Appleton
SDF
Louisville
$255 Roundtrip, found 7 hours ago
$255
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Apr 28 from Appleton to Louisville, returning Sat, May 2, priced at $255 found 7 hours ago
United
Tue, Apr 28 - Sat, May 2
ATW
Appleton
SDF
Louisville
$266 Roundtrip, found 7 hours ago
$266
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Apr 28 from Appleton to Louisville, returning Sat, May 2, priced at $266 found 7 hours ago
United
Tue, Apr 28 - Sat, May 2
ATW
Appleton
SDF
Louisville
$273 Roundtrip, found 7 hours ago
$273
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Apr 28 from Appleton to Louisville, returning Sat, May 2, priced at $273 found 7 hours ago
United
Tue, Nov 3 - Sat, Nov 7
ATW
Appleton
SDF
Louisville
$274 Roundtrip, found 1 day ago
$274
Roundtrip
found 1 day ago
Select United flight, departing Tue, Nov 3 from Appleton to Louisville, returning Sat, Nov 7, priced at $274 found 1 day ago
United
Wed, Jul 8 - Tue, Jul 14
ATW
Appleton
SDF
Louisville
$284 Roundtrip, found 4 days ago
$284
Roundtrip
found 4 days ago
Select United flight, departing Wed, Jul 8 from Appleton to Louisville, returning Tue, Jul 14, priced at $284 found 4 days ago
United
Thu, Mar 19 - Sat, Mar 21
ATW
Appleton
SDF
Louisville
$288 Roundtrip, found 5 hours ago
$288
Roundtrip
found 5 hours ago
Select United flight, departing Thu, Mar 19 from Appleton to Louisville, returning Sat, Mar 21, priced at $288 found 5 hours ago

Alternative airports near Louisville

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

Select flight to Louisville Intl. SDF. Cheapest and Closest option available. Average driving time to city center is 9 minutes. Flights from $314
SDF
Louisville Intl.
CheapestClosest
Average driving time to city center9 min
Flights from $314

Find the cheapest month to fly from Appleton (ATW) to Louisville (SDF)

April is typically the cheapest month to fly

From $188 - $499 per traveler.
Flights from Appleton (ATW) to Louisville (SDF)
Origin airport
Appleton Intl.
Destination airport
Louisville Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$248
Distance
443 mi

Appleton to Louisville Flights

The cheapest times to fly from Appleton to Louisville

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

 

The best time to book a flight from Appleton to Louisville

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

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 Appleton to Louisville in 2026. You can also book with separate airlines for your outbound and return journeys, from $170 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 Appleton to Louisville 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 Appleton to Louisville 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 Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.) cost?
You can find cheap one-way flights from $170 and cheap return flights from $249 Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.) with Expedia. One-way flights typically cost between $171 and $512, and return flights often range between $301 and $1051. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.)?
August is the cheapest month to fly from Appleton, WI to Louisville, KY, with average round-trip fares around $288. This is about 19% lower than the average price for the year, likely due to reduced travel demand during the late summer. Other cheap months to fly from Appleton to Louisville include January and May.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.)?
Enter ATW to SDF and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.)?
United is one of the cheapest airlines offering connecting flights from Appleton Intl. (ATW) to Louisville Intl. (SDF), with round-trip tickets starting from around $228.36 with a layover in O'Hare Intl. (ORD). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.)?
To find a cheap flight from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.)?
For flights from Appleton, WI (ATW) to Louisville, KY (SDF), the best times to travel are in August and January. Both months feature average return flight prices around $288, making them economical choices. August is popular for summer activities, while January offers a quieter travel experience, allowing you to enjoy the city without the hustle and bustle.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.)?
The earliest flight from Appleton, WI (Appleton Intl.) to Louisville, KY (Louisville Intl.) typically departs at 5:00 AM. Operated by American Airlines, this seasonal service is perfect for travelers wanting to make the most of their day in Louisville. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.)?
The most popular departure times for flights from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.) are from 6am to 9am. About 31% of passengers prefer this time window. Many major carriers, including Delta Air Lines, United Airlines, and American Airlines, offer flights during this window. This timing is convenient for travelers who want to arrive in Louisville early in the day.
How long does it take to fly from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.)?
Flights from ATW to SDF with one stop typically take around 5 hours 50 minutes, covering approximately 444 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.)?
First class is available on flights from ATW to SDF. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

How do I earn miles on a Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.) flight with Expedia?
It's easy to earn miles on a Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Louisville from Appleton Intl. (ATW)?
If you're planning to travel to Louisville from Appleton Intl. (ATW), you can fly into Louisville Intl. (SDF) Some flights may connect through major hubs like O'Hare Intl. (ORD), Detroit Metropolitan Wayne County (DTW), Hartsfield-Jackson Atlanta Intl. (ATL) before reaching Louisville. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.) at the last minute?
Typically, booking a last minute flight from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.) flight and hotel package?
Securing a Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.) Louisville Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.)?
If you booked your Appleton, WI (ATW-Appleton Intl.) to Louisville, KY (SDF-Louisville Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

*Flight schedules are subject to change.

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*Available to One Key members.