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$79+ Cheap flights from Chicago (CHI) to Louisville (SDF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SDF
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Louisville Intl are usually found in August or September, booked 53 days in advance, depart on a Saturday or Tuesday and return on a Thursday

Cheap flight deals from Chicago to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Louisville (SDF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$163
(Mytrip)

One-way from

$79
(FlightHub)

Popular in

February

Cheapest in

August

Average price

$252

Good round-trip deal

$225 or less

Good one-way deal

$119 or less
Provider with most accurate pricing for Chicago (CHI)-Louisville Intl flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Louisville Intl flights.
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From Chicago (CHI) to Louisville Intl
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One-way flight from Chicago (CHI) to Louisville Intl
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Highest demand for flights based on searches. 17% potential increase in price ($62 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Price to beat on a round-trip flight from Chicago (CHI) to Louisville Intl.
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Price to beat on a one-way flight from Chicago (CHI) to Louisville Intl.
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Find flight deals from Chicago to Louisville

Cheapest flights from Chicago to Louisville
Explore the most affordable flight options available from Chicago to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Mytrip deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/312:41 pmORD - SDF
1 stop19h 03mMultiple Airlines
Wed 6/42:07 pmSDF - ORD
1 stop7h 01mMultiple Airlines
Deal found 4/30$163
This FlightHub deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/286:30 amORD - SDF
1 stop5h 42mSpirit Airlines
Fri 5/302:07 pmSDF - ORD
1 stop7h 01mSpirit Airlines
Deal found 4/30$164
This American Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/282:20 pmORD - SDF
Nonstop1h 32mAmerican Airlines
Thu 5/2911:51 amSDF - ORD
Nonstop1h 41mAmerican Airlines
Deal found 5/1$179
This Southwest deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/241:00 pmMDW - SDF
Nonstop1h 10mSouthwest
Sun 5/258:00 amSDF - MDW
Nonstop1h 15mSouthwest
Deal found 4/30$179
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/45:59 pmORD - SDF
1 stop5h 07mDelta
Sat 7/55:51 pmSDF - ORD
1 stop7h 08mDelta
Deal found 4/30$199
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/241:08 pmMDW - SDF
1 stop4h 21mDelta
Sun 5/256:00 amSDF - MDW
1 stop4h 40mDelta
Deal found 4/30$199
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/37:40 pmORD - SDF
Nonstop1h 34mUnited Airlines
Wed 6/46:00 pmSDF - ORD
Nonstop1h 42mUnited Airlines
Deal found 4/30$201
This Mytrip deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/298:20 pmMDW - SDF
3 stops41h 20mMultiple Airlines
Thu 6/511:23 amSDF - MDW
2 stops27h 40mMultiple Airlines
Deal found 4/30$506

Cheapflights Fare Finder

Customize your flight search to find flights from Chicago to Louisville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
Use the filters below to find and compare flights from Chicago to Louisville that are best for you.

Fly from

Chicago

Fly to

Louisville

Route

Depart

Return

Price

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Tue 6/3

12:41 pm-8:44 am

1 stop19h 03m

Louisville Intl

Wed 6/4

2:07 pm-8:08 pm

1 stop7h 01m

$163

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Wed 5/28

6:30 am-1:12 pm

1 stop5h 42m

Louisville Intl

Fri 5/30

2:07 pm-8:08 pm

1 stop7h 01m

$164

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Wed 5/28

2:20 pm-4:52 pm

Nonstop1h 32m

Louisville Intl

Thu 5/29

11:51 am-12:32 pm

Nonstop1h 41m

$179

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Sat 5/24

1:00 pm-3:10 pm

Nonstop1h 10m

Louisville Intl

Sun 5/25

8:00 am-8:15 am

Nonstop1h 15m

$179

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Fri 7/4

5:59 pm-12:06 am

1 stop5h 07m

Louisville Intl

Sat 7/5

5:51 pm-11:59 pm

1 stop7h 08m

$199

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Sat 5/24

1:08 pm-6:29 pm

1 stop4h 21m

Louisville Intl

Sun 5/25

6:00 am-9:40 am

1 stop4h 40m

$199

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Tue 6/3

7:40 pm-10:14 pm

Nonstop1h 34m

Louisville Intl

Wed 6/4

6:00 pm-6:42 pm

Nonstop1h 42m

$201

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Thu 5/29

8:20 pm-2:40 pm

3 stops41h 20m

Louisville Intl

Thu 6/5

11:23 am-2:03 pm

2 stops27h 40m

$506

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Mon 6/2

6:30 am-1:12 pm

1 stop5h 42m

$79

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Tue 6/3

12:41 pm-8:44 am

1 stop19h 03m

$89

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 18 results
1
2

Compare providers for flights from Chicago to Louisville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Louisville in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Louisville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Louisville flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Louisville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Louisville. Price data was last updated on April 25, 2025.

Booking 53 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago to Louisville. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Chicago to Louisville?

Currently, January is the cheapest month in which you can book a flight from Chicago to Louisville (average of $299). Flying from Chicago to Louisville in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to SDF?

Find hourly flight availability from Chicago to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

It’s typically best to fly out from Chicago to Louisville in the evening. Doing so could potentially save you 17% on the flight price compared to flying in the morning, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Chicago to Louisville. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Chicago to Louisville flight should consider departing on Saturday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago to Louisville

Explore weekly flight availability from Chicago to Louisville. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 1, 2025.

The most flights from CHI to SDF are scheduled on a Thursday (43 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Louisville by month

Plan your trip to Louisville by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Louisville ranges from 3.1 - 5.3 inches per month. May is typically the wettest month, when rainfall can reach 5.3 in. September is typically the driest time to visit Louisville when rainfall is around 3.1 in.

Temperature in Louisville by month

Plan your trip to Louisville by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Louisville, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Louisville. Reviews last updated May 1, 2025.
Read through reviews of airlines operating flights from Chicago to Louisville, such as Southwest, Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,293 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.6

Food

7.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,293 reviews
Southwest
8.0
Very good
4,293 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.6

Food

7.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,934 reviews
Southwest
8.0
Very good
4,293 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.6

Food

7.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,696 reviews
Southwest
8.0
Very good
4,293 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.6

Food

7.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Allegiant Air
7.3
Good
734 reviews
Southwest
8.0
Very good
4,293 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.6

Food

7.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,293 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.6

Food

7.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Related info for your journey

Find useful and relevant information for your journey from Chicago to Louisville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Louisville from Chicago?

    Located just 5.3 mi from the city center, Louisville Intl is the airport most travelers will use when flying to Louisville from Chicago. Booking flights from Chicago to Louisville Intl (SDF) should be relatively easy as there are 23 daily inbound flights from Chicago from 3 different airlines.

  • What are the cheapest airlines flying from Chicago to Louisville round-trip?

    Our cheapest airline available from Chicago to Louisville is Spirit Airlines. Our recent data shows that you can find tickets from as low as $164 on this airline. Additional options worth looking into are American Airlines and Southwest, starting at $179 and $179 round-trip. You may be able to fly from Chicago to Louisville for 45% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Chicago to Louisville one-way?

    The cheapest airlines for a one-way flight from Chicago to Louisville are Spirit Airlines ($79), American Airlines ($90), and Southwest ($90).

  • What are the most reliable airlines from Chicago to Louisville?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago to Louisville on time: Copa Airlines (94%), Air Wisconsin (86%), Royal Jordanian (81%).

  • What are the cheapest flights from Chicago to Louisville?

    Looking at all options, your cheapest flight can be booked for $48. While the most popular route (Chicago O'Hare Intl - Louisville Intl) can be booked for $163 on average our data indicates $233 when flying from Chicago to Louisville.

  • Can I find deals for flights from Chicago to Louisville that include hotel bookings?

    Yes. In addition to deals on Chicago to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Louisville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Louisville.

  • Can I find deals for business class flights from Chicago to Louisville?

    Yes. Cheapflights offers flight deals from Chicago to Louisville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Louisville?

    Currently, January is the cheapest month in which you can book a flight from Chicago to Louisville (average of $299). Flying from Chicago to Louisville in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Jeffersonville
Corydon
Elizabethtown
Bardstown

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Chicago to Louisville

Discover the top 3 airlines that operate flights from Chicago to Louisville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$117Average$277FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$118Average$310FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$157Average$563FlexibilityNo cancel feeOn-time63%

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