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$46+ 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SDF
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
1 adult, Economy
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Cheap flight deals from Illinois to Louisville

Keep the following information in mind while searching for Illinois to Louisville flight deals. Data was last updated October 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$91
(American Airlines)

One-way from

$46
(Southwest)

Popular in

February

Cheapest in

August

Average price

$289

Good round-trip deal

$195 or less

Good one-way deal

$58 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 Illinois to Louisville Intl
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One-way flight from Illinois to Louisville Intl
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Highest demand for flights based on searches. 16% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Illinois to Louisville Intl.
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Price to beat on a one-way flight from Illinois to Louisville Intl.
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Find 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 October 20, 2025.

This American Airlines deal was found by Cheapflights users on 10/19. 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 12/259:30 amORD - SDF
Nonstop1h 36mAmerican Airlines
Thu 1/16:27 amSDF - ORD
Nonstop1h 39mAmerican Airlines
Deal found 10/19$91
This American Airlines deal was found by Cheapflights users on 10/19. 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.
Sat 11/229:41 amORD - SDF
Nonstop1h 32mAmerican Airlines
Mon 11/246:04 amSDF - ORD
Nonstop1h 40mAmerican Airlines
Deal found 10/19$161
This Southwest deal was found by Cheapflights users on 10/18. 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 11/223:45 pmMDW - SDF
Nonstop1h 10mSouthwest
Mon 11/241:55 pmSDF - MDW
Nonstop1h 15mSouthwest
Deal found 10/18$161
This Southwest deal was found by Cheapflights users on 10/19. 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 12/1510:05 amMDW - SDF
Nonstop1h 25mSouthwest
Sat 1/104:05 pmSDF - MDW
Nonstop1h 20mSouthwest
Deal found 10/19$171
This Delta deal was found by Cheapflights users on 10/19. 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 12/156:45 amORD - SDF
1 stop6h 04mDelta
Sat 1/105:45 pmSDF - ORD
1 stop7h 09mDelta
Deal found 10/19$191
This Delta deal was found by Cheapflights users on 10/19. 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 12/155:29 pmMDW - SDF
1 stop4h 29mDelta
Sat 1/107:20 amSDF - MDW
1 stop6h 15mDelta
Deal found 10/19$191
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Mon 11/247:30 amORD - SDF
Nonstop1h 29mUnited Airlines
Fri 11/287:00 amSDF - ORD
Nonstop1h 40mUnited Airlines
Deal found 10/20$193
This Southwest deal was found by Cheapflights users on 10/20. 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 11/249:30 amMDW - SDF
Nonstop1h 15mSouthwest
Fri 11/281:55 pmSDF - MDW
Nonstop1h 15mSouthwest
Deal found 10/20$193
This American Airlines deal was found by Cheapflights users on 10/18. 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 11/176:35 pmORD - SDF
1 stop4h 24mAmerican Airlines
Mon 11/245:20 pmSDF - ORD
Nonstop1h 45mAmerican Airlines
Deal found 10/18$203
This Delta deal was found by Cheapflights users on 10/19. 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 12/2510:46 amORD - SDF
1 stop4h 12mDelta
Thu 1/12:20 pmSDF - ORD
1 stop6h 18mDelta
Deal found 10/19$208
This American Airlines deal was found by Cheapflights users on 10/19. 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 12/155:40 pmORD - SDF
1 stop5h 14mAmerican Airlines
Sat 1/1012:56 pmSDF - ORD
Nonstop1h 48mAmerican Airlines
Deal found 10/19$211
This Southwest deal was found by Cheapflights users on 10/19. 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 11/182:25 pmMDW - SDF
Nonstop1h 10mSouthwest
Tue 11/256:20 amSDF - MDW
Nonstop1h 15mSouthwest
Deal found 10/19$231

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 October 20, 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

Sat 1/17

7:52 pm-10:30 pm

Nonstop1h 38m

Louisville Intl

Mon 1/19

6:12 pm-6:55 pm

Nonstop1h 43m

$131

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Sat 11/22

3:45 pm-5:55 pm

Nonstop1h 10m

Louisville Intl

Mon 11/24

1:55 pm-2:10 pm

Nonstop1h 15m

$161

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Sat 1/17

9:55 am-12:26 pm

Nonstop1h 31m

Louisville Intl

Mon 1/19

7:00 am-1:59 pm

1 stop7h 59m

$171

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Mon 12/15

10:05 am-12:30 pm

Nonstop1h 25m

Louisville Intl

Sat 1/10

4:05 pm-4:25 pm

Nonstop1h 20m

$171

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Mon 12/15

5:54 pm-8:28 pm

Nonstop1h 34m

Louisville Intl

Sat 1/10

5:35 am-6:19 am

Nonstop1h 44m

$171

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Mon 12/15

6:45 am-1:49 pm

1 stop6h 04m

Louisville Intl

Sat 1/10

5:45 pm-11:54 pm

1 stop7h 09m

$191

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Mon 12/22

7:15 pm-9:54 pm

Nonstop1h 39m

Louisville Intl

Thu 12/25

6:27 am-7:06 am

Nonstop1h 39m

$193

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Mon 11/24

9:30 am-11:45 am

Nonstop1h 15m

Louisville Intl

Fri 11/28

1:55 pm-2:10 pm

Nonstop1h 15m

$193

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Mon 12/15

9:34 am-6:52 pm

2 stops8h 18m

Louisville Intl

Sat 1/10

10:15 am-6:08 pm

2 stops8h 53m

$201

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Mon 11/17

7:55 pm-10:29 pm

Nonstop1h 34m

Louisville Intl

Mon 11/24

7:00 am-7:40 am

Nonstop1h 40m

$215

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

Showing 1-10 of 58 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 May is currently the most expensive (average of $149). 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 October 20, 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 35% 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 Tuesday evenings 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 Illinois to Louisville

Explore weekly flight availability from Illinois 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 October 20, 2025.

The most flights from USIL to SDF are scheduled on a Monday (39 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (30 on average).

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 10m. Fly via United Airlines, Southwest, or American Airlines to get the fastest option. The distance between Illinois and Louisville is about 271 mi. All flights are typically nonstop.

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

    $46 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 Delta, with prices starting from $46 and $79, 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: Japan Airlines (98%), Alaska Airlines (91%), Republic Airways( 90%).

  • What are the cheapest flights from Illinois to Louisville?

    Looking for the cheapest flight from Illinois to Louisville? While on average our users pay $285, our data indicates the cheapest price to be $38. The most popular route (Chicago O'Hare Intl - Louisville Intl), is priced around $97.

  • 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 May is currently the most expensive (average of $149). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 October 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$124Average$548FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$136Average$303FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$137Average$304FlexibilityNo cancel feeOn-time69%

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