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$49+ 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SDF
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Louisville Intl are usually found in August or May, booked 74 days in advance, depart on a Saturday or Thursday 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 July 3, 2025.

Round-trip from

$97
(United Airlines)

One-way from

$49
(United Airlines)

Popular in

February

Cheapest in

August

Average price

$292

Good round-trip deal

$174 or less

Good one-way deal

$118 or less
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. 16% potential increase in price ($58 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 July 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 July 3, 2025.

This United Airlines deal was found by Cheapflights users on 7/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/72:20 pmORD - SDF
Nonstop1h 31mUnited Airlines
Mon 8/112:10 pmSDF - ORD
Nonstop1h 40mUnited Airlines
Deal found 7/1$97
This Southwest deal was found by Cheapflights users on 7/2. 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.
Thu 8/710:00 amMDW - SDF
Nonstop1h 20mSouthwest
Mon 8/116:25 amSDF - MDW
Nonstop1h 15mSouthwest
Deal found 7/2$97
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Thu 8/148:20 pmORD - SDF
Nonstop1h 42mAmerican Airlines
Thu 8/216:44 amSDF - ORD
Nonstop1h 46mAmerican Airlines
Deal found 7/1$98
This Southwest deal was found by Cheapflights users on 7/2. 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.
Thu 8/77:30 amORD - SDF
1 stop6h 20mSouthwest
Mon 8/1111:50 amSDF - ORD
1 stop5h 35mSouthwest
Deal found 7/2$117
This Delta deal was found by Cheapflights users on 7/3. 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 9/207:10 amORD - SDF
1 stop6h 43mDelta
Tue 10/76:26 pmSDF - ORD
1 stop4h 20mDelta
Deal found 7/3$177
This Delta deal was found by Cheapflights users on 7/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/66:00 amMDW - SDF
1 stop4h 45mDelta
Wed 8/132:56 pmSDF - MDW
1 stop4h 41mDelta
Deal found 7/1$177
This FlightHub deal was found by Cheapflights users on 7/2. 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.
Thu 7/3110:00 amORD - SDF
1 stop6h 58mSpirit Airlines
Sun 8/36:53 pmSDF - ORD
1 stop21h 38mSpirit Airlines
Deal found 7/2$218

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 July 3, 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

Thu 8/7

2:20 pm-4:51 pm

Nonstop1h 31m

Louisville Intl

Mon 8/11

2:10 pm-2:50 pm

Nonstop1h 40m

$97

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Thu 8/7

8:35 pm-10:50 pm

Nonstop1h 15m

Louisville Intl

Mon 8/11

6:25 am-6:40 am

Nonstop1h 15m

$97

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Thu 8/14

8:20 pm-11:02 pm

Nonstop1h 42m

Louisville Intl

Thu 8/21

6:44 am-7:30 am

Nonstop1h 46m

$98

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Thu 8/7

7:30 am-2:50 pm

1 stop6h 20m

Louisville Intl

Mon 8/11

11:50 am-4:25 pm

1 stop5h 35m

$117

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Sat 9/20

7:10 am-2:53 pm

1 stop6h 43m

Louisville Intl

Tue 10/7

6:26 pm-9:46 pm

1 stop4h 20m

$177

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Wed 8/6

6:00 am-11:45 am

1 stop4h 45m

Louisville Intl

Wed 8/13

2:56 pm-6:37 pm

1 stop4h 41m

$177

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Thu 7/31

10:00 am-5:58 pm

1 stop6h 58m

Louisville Intl

Sun 8/3

6:53 pm-3:31 pm

1 stop21h 38m

$218

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Fri 7/18

9:12 am-6:18 pm

3 stops32h 06m

Louisville Intl

Sun 7/20

5:43 pm-8:22 am

1 stop15h 39m

$322

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Fri 7/18

10:31 am-10:04 am

2 stops22h 33m

Louisville Intl

Sun 7/20

5:43 pm-8:22 am

1 stop15h 39m

$323

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Thu 9/4

4:25 pm-6:58 pm

Nonstop1h 33m

$49

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 19 results
1
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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 June 27, 2025.

Booking 73 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 July 3, 2025.

It’s typically best to fly out from Chicago to Louisville in the evening. Doing so could potentially save you 13% 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 June 29, 2025.

Travelers seeking maximum savings on their Chicago to Louisville flight should consider departing on Saturday at noon 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 July 3, 2025.

The most flights from CHI to SDF are scheduled on a Thursday (41 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).

How much does it cost to fly round-trip from Chicago to Louisville?

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 July 3, 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
4,266 reviews

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,266 reviews
Southwest
8.0
Very good
4,266 reviews

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,982 reviews
Southwest
8.0
Very good
4,266 reviews

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,861 reviews
Southwest
8.0
Very good
4,266 reviews

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Allegiant Air
7.3
Good
708 reviews
Southwest
8.0
Very good
4,266 reviews

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,266 reviews

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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 22 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 United Airlines. Our recent data shows that you can find tickets from as low as $97 on this airline. Additional options worth looking into are Southwest and American Airlines, starting at $97 and $98 round-trip. You may be able to fly from Chicago to Louisville for 68% 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 United Airlines ($49), Southwest ($49), and American Airlines ($50).

  • 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: GoJet (90%), Copa Airlines (89%), Japan Airlines (89%).

  • What are the cheapest flights from Chicago to Louisville?

    Looking at all options, your cheapest flight can be booked for $78. While the most popular route (Chicago O'Hare Intl - Louisville Intl) can be booked for $97 on average our data indicates $318 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
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$117Average$279FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$137Average$333FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$157Average$545FlexibilityNo cancel feeOn-time63%

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