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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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SDF
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$171
(United Airlines)

One-way from

$49
(American Airlines)

Popular in

February

Cheapest in

August

Average price

$343

Good round-trip deal

$201 or less

Good one-way deal

$133 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 April 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 April 17, 2025.

This United Airlines deal was found by Cheapflights users on 4/17. 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.
Wed 6/47:00 amORD - SDF
Nonstop1h 33mUnited Airlines
Wed 6/42:05 pmSDF - ORD
Nonstop1h 40mUnited Airlines
Deal found 4/17$171
This Southwest deal was found by Cheapflights users on 4/16. 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.
Wed 6/256:55 amMDW - SDF
1 stop5h 25mSouthwest
Sat 6/286:00 pmSDF - MDW
Nonstop1h 20mSouthwest
Deal found 4/16$171
This American Airlines deal was found by Cheapflights users on 4/16. 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.
Tue 5/208:35 amORD - SDF
Nonstop1h 23mAmerican Airlines
Wed 5/217:24 amSDF - ORD
1 stop5h 54mAmerican Airlines
Deal found 4/16$176
This Delta deal was found by Cheapflights users on 4/17. 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.
Thu 5/81:45 pmORD - SDF
1 stop3h 44mDelta
Mon 5/128:10 pmSDF - ORD
1 stop4h 48mDelta
Deal found 4/17$177
This Delta deal was found by Cheapflights users on 4/16. 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.
Thu 5/81:08 pmMDW - SDF
1 stop4h 21mDelta
Mon 5/122:38 pmSDF - MDW
1 stop5h 07mDelta
Deal found 4/16$177
This Mytrip deal was found by Cheapflights users on 4/17. 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 5/810:00 amORD - SDF
1 stop24h 02mSpirit Airlines
Mon 5/1212:07 pmSDF - ORD
2 stops24h 43mSpirit Airlines
Deal found 4/17$194
This Southwest deal was found by Cheapflights users on 4/16. 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.
Tue 7/11:50 pmORD - SDF
1 stop8h 40mSouthwest
Fri 7/48:55 amSDF - ORD
1 stop7h 05mSouthwest
Deal found 4/16$211
This Mytrip deal was found by Cheapflights users on 4/17. 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 5/1510:00 amORD - SDF
2 stops27h 25mMultiple Airlines
Mon 5/192:07 pmSDF - ORD
3 stops33h 32mMultiple Airlines
Deal found 4/17$255
This Mytrip deal was found by Cheapflights users on 4/15. 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.
Mon 6/162:53 pmMDW - SDF
2 stops17h 16mAllegiant Air
Thu 6/193:14 pmSDF - MDW
2 stops23h 49mAllegiant Air
Deal found 4/15$384
This Mytrip deal was found by Cheapflights users on 4/17. 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 5/153:03 pmMDW - SDF
3 stops46h 37mMultiple Airlines
Thu 5/225:46 pmSDF - MDW
1 stop15h 36mMultiple Airlines
Deal found 4/17$514

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 April 17, 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

Wed 6/4

7:00 am-9:33 am

Nonstop1h 33m

Louisville Intl

Wed 6/4

2:05 pm-2:45 pm

Nonstop1h 40m

$171

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Wed 6/25

6:55 am-1:20 pm

1 stop5h 25m

Louisville Intl

Sat 6/28

6:00 pm-6:20 pm

Nonstop1h 20m

$171

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Tue 5/20

8:35 am-10:58 am

Nonstop1h 23m

Louisville Intl

Wed 5/21

7:24 am-12:18 pm

1 stop5h 54m

$176

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Thu 5/8

1:45 pm-9:26 pm

1 stop6h 41m

Louisville Intl

Mon 5/12

8:10 pm-11:58 pm

1 stop4h 48m

$177

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Thu 5/8

1:08 pm-6:29 pm

1 stop4h 21m

Louisville Intl

Mon 5/12

2:38 pm-6:45 pm

1 stop5h 07m

$177

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Thu 5/8

10:00 am-11:02 am

1 stop24h 02m

Louisville Intl

Mon 5/12

12:07 pm-11:50 am

2 stops24h 43m

$194

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Tue 7/1

1:50 pm-11:30 pm

1 stop8h 40m

Louisville Intl

Fri 7/4

8:55 am-3:00 pm

1 stop7h 05m

$211

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Thu 5/15

10:00 am-2:25 pm

2 stops27h 25m

Louisville Intl

Mon 5/19

2:07 pm-10:39 pm

3 stops33h 32m

$255

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Mon 6/16

2:53 pm-9:09 am

2 stops17h 16m

Louisville Intl

Thu 6/19

3:14 pm-2:03 pm

2 stops23h 49m

$384

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Thu 5/15

3:03 pm-2:40 pm

3 stops46h 37m

Louisville Intl

Thu 5/22

5:46 pm-8:22 am

1 stop15h 36m

$514

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 20 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 April.
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 11, 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 April 17, 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 April 17, 2025.

The most flights from CHI to SDF are scheduled on a Wednesday (42 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 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 April 17, 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
4,280 reviews

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,280 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,916 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,667 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Allegiant Air
7.3
Good
734 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 32 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 $171 on this airline. Additional options worth looking into are Southwest and American Airlines, starting at $171 and $176 round-trip. You may be able to fly from Chicago to Louisville for 42% 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 American Airlines ($49), Southwest ($49), and United Airlines ($64).

  • 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 $60. While the most popular route (Chicago O'Hare Intl - Louisville Intl) can be booked for $97 on average our data indicates $271 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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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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$117Average$280FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$117Average$309FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$157Average$539FlexibilityNo cancel feeOn-time63%

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