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$49+ 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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SDF
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$152
(United Airlines)

One-way from

$49
(United Airlines)

Popular in

February

Cheapest in

August

Average price

$395

Good round-trip deal

$239 or less

Good one-way deal

$93 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. 21% potential increase in price ($84 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 28, 2025.

This United Airlines deal was found by Cheapflights users on 3/27. 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.
Mon 6/97:40 pmORD - SDF
Nonstop1h 34mUnited Airlines
Thu 6/127:00 amSDF - ORD
Nonstop1h 37mUnited Airlines
Deal found 3/27$152
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Fri 5/168:25 pmORD - SDF
Nonstop1h 36mAmerican Airlines
Mon 5/198:56 amSDF - ORD
Nonstop1h 36mAmerican Airlines
Deal found 3/27$157
This Southwest deal was found by Cheapflights users on 3/25. 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.
Fri 5/308:55 pmMDW - SDF
Nonstop1h 15mSouthwest
Mon 6/26:15 pmSDF - MDW
1 stop4h 45mSouthwest
Deal found 3/25$166
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2310:30 amORD - SDF
1 stop5h 49mDelta
Thu 4/247:00 pmSDF - ORD
1 stop5h 59mDelta
Deal found 3/27$177
This Southwest deal was found by Cheapflights users on 3/26. 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 4/241:50 pmORD - SDF
1 stop8h 25mSouthwest
Mon 4/286:15 amSDF - ORD
1 stop6h 35mSouthwest
Deal found 3/26$182
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/101:08 pmMDW - SDF
1 stop4h 21mDelta
Sat 5/177:05 amSDF - MDW
2 stops6h 23mDelta
Deal found 3/26$182
This Mytrip deal was found by Cheapflights users on 3/27. 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.
Sun 5/115:51 amORD - SDF
2 stops10h 40mSpirit Airlines
Sun 5/186:26 pmSDF - ORD
2 stops30h 58mSpirit Airlines
Deal found 3/27$219
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Fri 5/94:25 pmMLI - SDF
1 stop4h 28mAmerican Airlines
Mon 5/123:28 pmSDF - MLI
1 stop7h 46mAmerican Airlines
Deal found 3/27$229
This United Airlines deal was found by Cheapflights users on 3/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/115:25 pmMLI - SDF
1 stop4h 05mUnited Airlines
Tue 4/157:29 amSDF - MLI
1 stop3h 43mUnited Airlines
Deal found 3/26$239
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/255:32 pmSTL - SDF
1 stop5h 27mDelta
Fri 5/211:08 amSDF - STL
1 stop4h 52mDelta
Deal found 3/26$247
This Southwest deal was found by Cheapflights users on 3/26. 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.
Fri 4/255:35 amSTL - SDF
1 stop4h 45mSouthwest
Fri 5/21:05 pmSDF - STL
2 stops6h 25mSouthwest
Deal found 3/26$252
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/175:50 amMLI - SDF
1 stop5h 00mDelta
Mon 4/214:59 pmSDF - MLI
1 stop6h 26mDelta
Deal found 3/26$259

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 March 28, 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

Mon 6/9

7:40 pm-10:14 pm

Nonstop1h 34m

Louisville Intl

Thu 6/12

7:00 am-7:37 am

Nonstop1h 37m

$152

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Fri 5/16

8:25 pm-11:01 pm

Nonstop1h 36m

Louisville Intl

Mon 5/19

8:56 am-9:32 am

Nonstop1h 36m

$157

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Fri 5/30

8:55 pm-11:10 pm

Nonstop1h 15m

Louisville Intl

Mon 6/2

6:15 pm-10:00 pm

1 stop4h 45m

$166

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Wed 4/23

10:30 am-5:19 pm

1 stop5h 49m

Louisville Intl

Thu 4/24

7:00 pm-11:59 pm

1 stop5h 59m

$177

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Thu 4/24

1:50 pm-11:15 pm

1 stop8h 25m

Louisville Intl

Mon 4/28

6:15 am-11:50 am

1 stop6h 35m

$182

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Sat 5/10

1:08 pm-6:29 pm

1 stop4h 21m

Louisville Intl

Sat 5/17

7:05 am-12:28 pm

2 stops6h 23m

$182

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Sun 5/11

11:00 am-10:55 am

1 stop22h 55m

Louisville Intl

Sun 5/18

6:26 pm-12:24 am

2 stops30h 58m

$219

MolineLouisville

MLI - SDF

MLISDF

Moline Quad-City

Fri 5/9

4:25 pm-9:53 pm

1 stop4h 28m

Louisville Intl

Mon 5/12

3:28 pm-10:14 pm

1 stop7h 46m

$229

MolineLouisville

MLI - SDF

MLISDF

Moline Quad-City

Fri 4/11

5:25 pm-10:30 pm

1 stop4h 05m

Louisville Intl

Tue 4/15

7:29 am-10:12 am

1 stop3h 43m

$239

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Fri 4/25

5:32 pm-11:59 pm

1 stop5h 27m

Louisville Intl

Fri 5/2

11:08 am-3:00 pm

1 stop4h 52m

$247

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 30 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, January is the cheapest month in which you can book a flight from Illinois to Louisville (average of $299). Flying from Illinois 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 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 March 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Louisville as you normally would.

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 March 28, 2025.

The most flights from USIL to SDF are scheduled on a Thursday (29 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 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 March 28, 2025.
See what other customers who have flown with Southwest, Delta and United Airlines from Illinois to Louisville have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Comfort

8.1

Overall

8.1

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
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Comfort

8.1

Overall

8.1

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
7,896 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Comfort

8.1

Overall

8.1

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
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Comfort

8.1

Overall

8.1

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
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Comfort

8.1

Overall

8.1

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.
Spirit Airlines
6.3
Okay
7,881 reviews
Southwest
8.1
Very good
4,273 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Entertainment

7.6

Comfort

8.1

Overall

8.1

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 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.

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

    $49 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Southwest and American Airlines, with prices starting from $49 and $64, 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: Copa Airlines (100%), GoJet (100%), Emirates( 87%).

  • What are the cheapest flights from Illinois to Louisville?

    Looking for the cheapest flight from Illinois to Louisville? While on average our users pay $321, our data indicates the cheapest price to be $58. The most popular route (Chicago O'Hare Intl - Louisville Intl), is priced around $112.

  • 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, January is the cheapest month in which you can book a flight from Illinois to Louisville (average of $299). Flying from Illinois 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 Illinois?

Book flights to Illinois if you plan to visit one of these locations
Jeffersonville
Corydon
Elizabethtown
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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$105Average$309FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$117Average$298FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$157Average$539FlexibilityNo cancel feeOn-time63%
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