CHI - SDF

$105 Find Cheap Flights from Chicago to Louisville - 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 Chicago to Louisville departing on 8/20. 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

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Everything you should know

Cheapest round-trip
$217
Typical prices: $139-$358
American Airlines
Tue 8/18Tue 8/25
ORD - SDF • Non-stop
Cheapest non-stop
$217
Typical prices: $273-$295
Southwest
Tue 9/8Tue 9/15
MDW - SDF • Non-stop
Top airlines
Cheapest • from $217 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with American Airlines, Southwest and United Airlines. Average duration is 1h 30m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest
Most popular
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $196 (round-trip)
Shortest trip • 3h 16m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 55% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 31% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Chicago to Louisville (CHI-SDF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Louisville 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 Chicago to Louisville

Tue, Aug 18 - Tue, Aug 25
American Airlines Logo
3:24 pm - 6:00 pm
ORD
-
SDF
1h 36mnonstop
American Airlines Logo
11:05 am - 11:44 am
SDF
-
ORD
1h 39mnonstop
$217American Airlines
Tue, Aug 25 - Tue, Aug 25
American Airlines Logo
8:05 am - 10:35 am
ORD
-
SDF
1h 30mnonstop
American Airlines Logo
6:30 pm - 7:24 pm
SDF
-
ORD
1h 54mnonstop
$217American Airlines
Tue, Aug 18 - Tue, Aug 18
United Airlines Logo
10:35 am - 1:11 pm
ORD
-
SDF
1h 36mnonstop
United Airlines Logo
5:45 pm - 6:36 pm
SDF
-
ORD
1h 51mnonstop
$217United Airlines
Thu, Oct 22 - Tue, Oct 27
United Airlines Logo
6:55 am - 9:37 am
ORD
-
SDF
1h 42mnonstop
United Airlines Logo
7:10 am - 7:53 am
SDF
-
ORD
1h 43mnonstop
$217United Airlines
Tue, Sep 8 - Tue, Sep 15
Southwest Logo
1:00 pm - 3:15 pm
MDW
-
SDF
1h 15mnonstop
Southwest Logo
1:15 pm - 1:30 pm
SDF
-
MDW
1h 15mnonstop
$217Southwest
Tue, Sep 8 - Tue, Sep 15
Southwest Logo
1:00 pm - 3:15 pm
MDW
-
SDF
1h 15mnonstop
Southwest Logo
6:45 pm - 7:00 pm
SDF
-
MDW
1h 15mnonstop
$217Southwest
Mon, Aug 24 - Tue, Aug 25
American Airlines Logo
3:24 pm - 6:00 pm
ORD
-
SDF
1h 36mnonstop
American Airlines Logo
6:28 am - 7:15 am
SDF
-
ORD
1h 47mnonstop
$217American Airlines
Mon, Aug 24 - Tue, Aug 25
United Airlines Logo
9:25 pm - 11:59 pm
ORD
-
SDF
1h 34mnonstop
United Airlines Logo
1:50 pm - 2:30 pm
SDF
-
ORD
1h 40mnonstop
$217United Airlines
Wed, Aug 19 - Wed, Aug 26
Delta Logo
6:59 am - 1:51 pm
ORD
-
SDF
5h 52m
1 stop
Delta Logo
7:55 am - 1:08 pm
SDF
-
ORD
6h 13m
1 stop
$237Delta
Tue, Sep 15 - Wed, Sep 16
Delta Logo
1:55 pm - 9:16 pm
ORD
-
SDF
6h 21m
1 stop
Delta Logo
2:47 pm - 8:30 pm
SDF
-
ORD
6h 43m
1 stop
$237Delta
Booking Insights

KAYAK's insights & trends for Chicago to Louisville flights

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

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

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

Flight prices are below average for this route right now.

Flights to Louisville from Chicago usually cost between $251 and $315 in September.
The lowest price found in the past 5 days was $217 on Southwest (Sep 8-Sep 15).

What is the cheapest Chicago to Louisville flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Chicago to Louisville costs $256 on the route between Chicago O'Hare Intl Airport (ORD) and Louisville (SDF). It is also the most popular route.

What’s the cheapest day of the week to fly from Chicago to Louisville?

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

For Chicago to Louisville, Saturday is the cheapest day to fly on average and Monday is the most expensive. Flying from Louisville back to Chicago, the best deals are generally found on Friday, with Monday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago to Louisville, 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 Chicago to Louisville is December, where tickets cost $257 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $506 and $484 respectively.

Can I save money by flying with a layover from Chicago to Louisville?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $508, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Chicago to Louisville?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago to Louisville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Chicago to Louisville, you should book around 4 weeks before departure, which saves you about 55% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Expert advice

Expert advice for your flight from Chicago to Louisville

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Good to know

Low season

August

Cheapest flight

$105
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 38% increase in price.
Flight from Chicago O'Hare Airport to Louisville

When to book flights from Chicago to Louisville

Are your dates flexible? Find out the best times to travel from Chicago to Louisville 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 Chicago to Louisville

  • What is the cheapest flight from Chicago to Louisville?

    In the last 5 days, the lowest price for a flight from Chicago to Louisville was $105 for a one-way ticket and $217 for a round-trip.

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

    No, a passport isn't needed to fly from Chicago to Louisville. However, local authorities might ask for an official ID.

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

    When flying out of Chicago you will be using one of these airports: Chicago Midway or Chicago O'Hare Intl. You will be landing at Louisville Intl.

  • Which airlines offer Wi-Fi service onboard planes from Chicago to Louisville?

    American Airlines, and JetBlue offer inflight Wi-Fi service on the Chicago to Louisville flight route.

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

    The Canadair (Bombardier) Regional Jet CRJ-550 is the aircraft model that flies most regularly on the Chicago to Louisville flight route.

  • Which airline alliances offer flights from Chicago to Louisville?

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

  • On which days can I fly direct from Chicago to Louisville?

    There are nonstop flights from Chicago to Louisville on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from Chicago to Louisville are Southwest and United Airlines. With an average price for the route of $314 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $485 and an overall rating of 7.4.

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

    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 Chicago to Louisville.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Chicago 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 Chicago to Louisville?

    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 Louisville with an airline and back to Chicago with another airline.

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

    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 Louisville from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Chicago to Louisville

  • Looking for a cheap flight? 25% of our users found flights on this route for $181 or less one-way and $320 or less round-trip.

Prefer to fly direct from Chicago to Louisville?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Chicago to Louisville Intl.
Find which airlines fly direct from Chicago to Louisville Intl Airport, which days they fly and book direct flights.

Direct departures

Chicago to Louisville Intl

Monday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

Tuesday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

Wednesday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

Thursday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

Friday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

Saturday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

Sunday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

See more direct flights

Direct returns

Louisville Intl to Chicago

Monday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

Tuesday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

Wednesday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

Thursday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

Friday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

Saturday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

Sunday

American Airlines,Southwest,United Airlines

American Airlines,Southwest, +1 more

See more direct flights

Reviews of the top 3 airlines serving from Chicago to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Louisville. 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 Chicago to Louisville? 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.
8.0
SouthwestOverall score based on 4228 reviews
8.6Crew
7.5Entertainment
7.0Food
8.1Boarding
8.0Comfort
Airline reviews

Overall good, just screaming kids in the area the whole flight.

8.0 ExcellentAnonymous, Jul 2026
MDW - MHT
Read more Southwest reviews

Overall good, just screaming kids in the area the whole flight.

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

I flew twice this week on Southwest, was delayed over 2 hours both ways. From Pittsburgh to Chicago it was due to weather but the gate agents, pilot etc were great at updating everyone. Today from Midway to Pittsburgh the plane had come from an international location, kept getting delayed, no information was given until we were delayed for the third time. It was ridiculous, whoever scheduled that plane to fly to Pittsburgh after didn’t consider a lot of things.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

after landing, we stay 2 hours on the taxi way before reaching the gate The airline and the crew were good though

The seats were a bit cramped and worn, but otherwise okay.

Since the flight wasn’t full, we had some extra room. Crew was great

The SFO lounge closes at 12 midnight. My flight took off at 2AM

It was extremely hot in the cabin the entire flight, vent air was worn

Have not had a flight out or returning to Norfolk that has not required maintenance, and a gate delay. Properly staff the crew so maintenance can be performed without last minute emergencies on each flight and there is enough staff to have gates prepared for inbound flights. Staff to ensure the safety and on time service vs. profit.

My original flight was cancelled and that affected my trip and my plans and I got no compensation and customer service was hard to reach as well

The flight was delayed by a hour and I wish they had communicated it sooner. No issues on the plane, it did take a while for food to come.

Know that the movies that you are going to be offered are the oldest be rated movies they could possibly get. They may have one or two new movies that they keep advertising but when you’re flying 15 hours, there is nothing to see past the first new movie.

Great experience. Boarding was fast, staff were very nice and funny, everything at the seat worked well.

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

Boarded early; and arrived home 40 mins early. After a long flight, it’s nice to be back home early. These flights have no amenities; no snacks. So need to bring your own

Short flight, but no drink/snack service. The flights both going and coming were delayed.

I had my flight of Cedar Rapids. THen Chicago to Boston. Flight out of Cedar rapids was delayed by 12 hrs. Had to drive to Chicago to catch my flight

Long delays to board due to mechanical issues with plane.

The gate got changed several times and the flight was delayed over an hour. Awful experience

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

No Snacks or Entertainment. The flight was short, snacks should still be given.

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

Everything was fine. Flight boarded and departed on time. Seating was spacious enough for my carryon to fit under the seat in front of me. No complaints at all. Flight even arrived early.

Boston ticket agent Cheryl Porter is WONDERFUL. Our Iberia flight to Barcelona was cancelled the morning we were scheduled to leave and Cheryl was our super hero - she found us seats on a flight to London and on to Barcelona. Truly a “can-do” attitude which we appreciated so much after the Iberia ticket agents told us there was “absolutely nothing they could do”. (As did the customer service agents at Iberia’s call center) Ms Porter is truly a wonderful person who genuinely cares about travelers!

American is a steady for me. I always get what I expect from them. Sincere effort to get me from one place to another.

Nothing wrong on this flight but nothing special. It was oversold and they had to bump people which is always bad.

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

Information on your arrival and departure airports

Compare transportation modes for Chicago to Louisville

Transportation modeAverage priceAverage duration
Flights$4711h 15m
Buses$1646h 45m