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$87+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SDF
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/27. 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 2/247:40 pm
ORD
-
SDF
Nonstop1h 33m
United Airlines
Tue 3/35:35 am
SDF
-
ORD
Nonstop1h 44m
United Airlines
Deal found 1/27$177
This Southwest deal was found by Cheapflights users on 1/27. 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 2/2410:00 am
MDW
-
SDF
Nonstop1h 15m
Southwest
Tue 3/36:45 am
SDF
-
MDW
Nonstop1h 25m
Southwest
Deal found 1/27$177
This American Airlines deal was found by Cheapflights users on 1/28. 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 3/258:50 pm
ORD
-
SDF
Nonstop1h 30m
American Airlines
Sat 3/287:30 am
SDF
-
ORD
Nonstop1h 42m
American Airlines
Deal found 1/28$184
This American Airlines deal was found by Cheapflights users on 1/27. 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 3/218:50 pm
ORD
-
SDF
Nonstop1h 30m
American Airlines
Sat 3/286:33 am
SDF
-
ORD
Nonstop1h 42m
American Airlines
Deal found 1/27$191
This Southwest deal was found by Cheapflights users on 1/27. 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 3/217:15 pm
MDW
-
SDF
Nonstop1h 15m
Southwest
Sat 3/287:20 am
SDF
-
MDW
Nonstop1h 20m
Southwest
Deal found 1/27$191
This Southwest deal was found by Cheapflights users on 1/28. 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 4/75:00 pm
MDW
-
SDF
1 stop4h 55m
Southwest
Tue 4/143:30 pm
SDF
-
MDW
Nonstop1h 15m
Southwest
Deal found 1/28$194
This Southwest deal was found by Cheapflights users on 1/28. 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 4/72:40 pm
ORD
-
SDF
1 stop5h 25m
Southwest
Tue 4/147:00 am
SDF
-
ORD
1 stop6h 50m
Southwest
Deal found 1/28$202
This American Airlines deal was found by Cheapflights users on 1/27. 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 4/188:15 am
ORD
-
SDF
Nonstop1h 32m
American Airlines
Sat 5/97:05 pm
SDF
-
ORD
Nonstop1h 44m
American Airlines
Deal found 1/27$203
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Sat 3/145:50 pm
ORD
-
SDF
Nonstop1h 24m
United Airlines
Mon 3/169:00 am
SDF
-
ORD
Nonstop1h 44m
United Airlines
Deal found 1/27$205
This Mytrip deal was found by Cheapflights users on 1/27. 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 2/245:15 am
ORD
-
SDF
1 stop8h 23m
Spirit Airlines
Tue 3/33:33 pm
SDF
-
ORD
1 stop9h 14m
Spirit Airlines
Deal found 1/27$209
This American Airlines deal was found by Cheapflights users on 1/26. 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 2/268:51 pm
ORD
-
SDF
Nonstop1h 25m
American Airlines
Sat 2/287:09 am
SDF
-
ORD
Nonstop1h 34m
American Airlines
Deal found 1/26$215
This Southwest deal was found by Cheapflights users on 1/26. 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 2/269:55 pm
MDW
-
SDF
Nonstop1h 10m
Southwest
Sat 2/286:40 am
SDF
-
MDW
Nonstop1h 25m
Southwest
Deal found 1/26$215

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$177
(Southwest)

One-way from

$87
(United Airlines)

Popular in

June

Cheapest in

August

Average price

$319

Good round-trip deal

$274 or less

Good one-way deal

$172 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. 12% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 29, 2026.
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

Wed 3/25

8:50 pm-11:20 pm

Nonstop1h 30m

Louisville Intl

Sat 3/28

7:30 am-8:12 am

Nonstop1h 42m

$184

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Sat 3/21

7:15 pm-9:30 pm

Nonstop1h 15m

Louisville Intl

Sat 3/28

7:20 am-7:40 am

Nonstop1h 20m

$191

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Tue 4/7

4:50 pm-9:05 pm

1 stop3h 15m

Louisville Intl

Tue 4/14

1:35 pm-8:10 pm

2 stops7h 35m

$202

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Sat 3/14

8:30 am-11:00 am

Nonstop1h 30m

Louisville Intl

Mon 3/16

6:12 pm-7:00 pm

Nonstop1h 48m

$205

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Tue 2/24

8:10 am-4:50 pm

2 stops7h 40m

Louisville Intl

Tue 3/3

11:50 am-6:50 pm

2 stops8h 00m

$207

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Thu 2/26

9:55 pm-12:05 am

Nonstop1h 10m

Louisville Intl

Sat 2/28

6:40 am-7:05 am

Nonstop1h 25m

$215

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Sat 4/18

7:50 am-10:05 am

Nonstop1h 15m

Louisville Intl

Sat 5/9

8:40 am-9:00 am

Nonstop1h 20m

$215

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Sat 4/18

6:00 am-12:11 pm

1 stop5h 11m

Louisville Intl

Sat 5/9

11:00 am-3:25 pm

1 stop5h 25m

$223

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Fri 3/20

5:50 pm-8:14 pm

Nonstop1h 24m

Louisville Intl

Tue 3/24

1:58 pm-2:45 pm

Nonstop1h 47m

$223

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Sat 3/14

5:25 am-2:40 pm

1 stop8h 15m

Louisville Intl

Mon 3/16

5:15 pm-11:35 pm

1 stop7h 20m

$223

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 59 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 $98). 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 January 29, 2026.

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 4% 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 January 24, 2026.

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.

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 January 29, 2026.

The most flights from USIL to SDF are scheduled on a Monday (30 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 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 15m. Fly via American Airlines, Southwest, or United 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?

    $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 Lambert-St Louis - 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: Lufthansa (77%), SkyWest Airlines (76%), Japan Airlines( 75%).

  • What are the cheapest flights from Illinois to Louisville?

    Looking for the cheapest flight from Illinois to Louisville? While on average our users pay $804, our data indicates the cheapest price to be $86. The most popular route (Chicago O'Hare Intl - Louisville Intl), is priced around $177.

  • 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 $98). 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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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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$124Average$404FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$127Average$290FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$136Average$312FlexibilityNo cancel feeOn-time71%

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