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$67+ Cheap flights from Illinois 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SDF
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Illinois to Louisville

Cheapest flights from Illinois to Louisville
Explore the most affordable flight options available from Illinois to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 12/257:52 pmORD - SDF
Nonstop1h 38mUnited Airlines
Thu 1/16:11 pmSDF - ORD
Nonstop1h 43mUnited Airlines
Deal found 12/17$175
This American Airlines deal was found by Cheapflights users on 12/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:03 amORD - SDF
1 stop6h 09mAmerican Airlines
Thu 1/15:49 pmSDF - ORD
Nonstop1h 50mAmerican Airlines
Deal found 12/17$215
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:35 amORD - SDF
Nonstop1h 38mUnited Airlines
Thu 1/16:11 pmSDF - ORD
Nonstop1h 43mUnited Airlines
Deal found 12/16$299
This Southwest deal was found by Cheapflights users on 12/16. 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 12/307:35 pmMDW - SDF
Nonstop1h 15mSouthwest
Thu 1/16:45 amSDF - MDW
Nonstop1h 15mSouthwest
Deal found 12/16$299
This American Airlines deal was found by Cheapflights users on 12/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/294:05 pmORD - SDF
1 stop5h 09mAmerican Airlines
Wed 12/312:00 pmSDF - ORD
Nonstop1h 45mAmerican Airlines
Deal found 12/15$319
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:25 amORD - SDF
Nonstop1h 38mUnited Airlines
Sun 1/46:11 pmSDF - ORD
Nonstop1h 43mUnited Airlines
Deal found 12/16$346
This American Airlines deal was found by Cheapflights users on 12/16. 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 12/3010:29 amORD - SDF
1 stop6h 52mAmerican Airlines
Thu 1/18:00 amSDF - ORD
1 stop5h 40mAmerican Airlines
Deal found 12/16$349
This Southwest deal was found by Cheapflights users on 12/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/297:35 pmMDW - SDF
Nonstop1h 15mSouthwest
Wed 12/315:30 amSDF - MDW
1 stop5h 40mSouthwest
Deal found 12/15$361
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:15 pmORD - SDF
2 stops23h 00mMultiple Airlines
Tue 1/133:36 pmSDF - ORD
1 stop20h 46mMultiple Airlines
Deal found 12/16$365
This Delta deal was found by Cheapflights users on 12/16. 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.
Wed 12/316:29 amSTL - SDF
1 stop5h 43mDelta
Sun 1/44:39 pmSDF - STL
1 stop6h 38mDelta
Deal found 12/16$380
This Delta deal was found by Cheapflights users on 12/16. 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.
Mon 12/297:00 amORD - SDF
1 stop5h 12mDelta
Tue 1/134:56 pmSDF - ORD
1 stop5h 47mDelta
Deal found 12/16$390
This Delta deal was found by Cheapflights users on 12/16. 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.
Mon 12/296:00 amMDW - SDF
1 stop4h 26mDelta
Tue 1/1310:35 amSDF - MDW
1 stop6h 54mDelta
Deal found 12/16$390

Find flight deals from Illinois to Louisville

Keep the following information in mind while searching for Illinois to Louisville flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$133
(United Airlines)

One-way from

$67
(United Airlines)

Popular in

February

Cheapest in

August

Average price

$294

Good round-trip deal

$177 or less

Good one-way deal

$352 or less
Provider with most accurate pricing for Chicago (CHI)-Louisville Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Louisville Intl flights.
Search Deals
From Illinois to Louisville Intl
Search Deals
One-way flight from Illinois to Louisville Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Louisville Intl.
Search Deals
Price to beat on a one-way flight from Illinois to Louisville Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois 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 December 18, 2025.
Use the filters below to find and compare flights from Illinois to Louisville that are best for you.

Fly from

Illinois

Fly to

Louisville

Route

Depart

Return

Price

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Tue 1/6

7:52 pm-10:30 pm

Nonstop1h 38m

Louisville Intl

Wed 1/7

5:35 am-6:19 am

Nonstop1h 44m

$133

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Tue 1/13

4:08 pm-6:39 pm

Nonstop1h 31m

Louisville Intl

Thu 1/15

1:32 pm-2:20 pm

Nonstop1h 48m

$152

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Tue 2/3

5:50 pm-8:28 pm

Nonstop1h 38m

Louisville Intl

Sat 2/7

11:10 am-11:53 am

Nonstop1h 43m

$152

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Wed 1/14

8:50 am-4:16 pm

1 stop6h 26m

Louisville Intl

Wed 1/21

7:50 am-1:18 pm

1 stop6h 28m

$157

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Tue 1/6

5:30 am-11:37 am

1 stop5h 07m

Louisville Intl

Tue 1/6

4:56 pm-9:43 pm

1 stop5h 47m

$157

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Tue 1/6

6:50 am-2:42 pm

2 stops6h 52m

Louisville Intl

Wed 1/7

6:00 am-1:08 pm

2 stops8h 08m

$167

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Thu 1/8

10:00 am-12:15 pm

Nonstop1h 15m

Louisville Intl

Mon 1/12

6:45 am-7:10 am

Nonstop1h 25m

$171

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Thu 1/8

7:45 am-10:23 am

Nonstop1h 38m

Louisville Intl

Sat 1/10

5:35 am-6:19 am

Nonstop1h 44m

$171

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Mon 1/12

1:28 pm-5:32 pm

1 stop3h 04m

Louisville Intl

Tue 1/13

6:00 am-10:27 am

1 stop5h 27m

$174

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Mon 1/12

11:05 am-5:32 pm

1 stop5h 27m

Louisville Intl

Tue 1/13

5:45 pm-11:59 pm

1 stop7h 14m

$174

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 55 results
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Best time to book a flight from Illinois to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Illinois 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 Illinois to Louisville

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

Currently, June is the cheapest month in which you can book a flight from Illinois to Louisville (average of $90). Flying from Illinois to Louisville in January is currently the most expensive (average of $203). 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 IL to SDF?

Find hourly flight availability from Illinois 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 December 18, 2025.

One of the essential ways to save on airfare from Illinois to Louisville is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 37% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Illinois to Louisville. Price data was last updated on December 16, 2024.

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

Related info for your journey

Find useful and relevant information for your journey from Illinois 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 Illinois?

    Louisville Intl (SDF), located 5.3 mi from the city center, is the airport you fly into when you book flights from Illinois to Louisville.

  • How long is the flight from Illinois to Louisville?

    There are many flights that can get you from Illinois to Louisville in 1h 31m. Fly via United Airlines, American Airlines, or Delta to get the fastest option. The distance between Illinois and Louisville is about 287 mi. This flight may include one or multiple stops.

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

    $38 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $45 and $48, respectively.

  • What are the most popular routes from Illinois to Louisville?

    The most popular flight routes from Illinois to Louisville are Chicago O'Hare Intl - Louisville Intl, Chicago Midway - Louisville Intl and Moline Quad-City - Louisville Intl.

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

    Before booking your flight to Louisville from Illinois, check out the most reliable airlines to get you to your destination on time: Envoy Air (88%), Japan Airlines (83%), Republic Airways( 76%).

  • What are the cheapest flights from Illinois to Louisville?

    Looking for the cheapest flight from Illinois to Louisville? While on average our users pay $1,046, our data indicates the cheapest price to be $97. The most popular route (Chicago O'Hare Intl - Louisville Intl), is priced around $133.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois 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 Illinois to Louisville?

    Currently, June is the cheapest month in which you can book a flight from Illinois to Louisville (average of $90). Flying from Illinois to Louisville in January is currently the most expensive (average of $203). 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 Louisville?

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

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Alternative routes for Illinois to Louisville

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Top 3 airlines flying from Illinois to Louisville

Discover the top 3 airlines that operate flights from Illinois 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$124Average$319FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$127Average$291FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$134Average$306FlexibilityNo cancel feeOn-time71%

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