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Kentucky

$49+ Cheap flights from Illinois to Kentucky

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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SDF
Apr 9 — Apr 161
Wed 4/9
Wed 4/16
1 adult, Economy
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Cheap flight deals from Illinois to Kentucky

Keep the following information in mind while searching for Illinois to Kentucky flight deals. Data was last updated April 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$84
(FlightHub)

One-way from

$49
(Frontier)

Popular in

February

Cheapest in

August

Average price

$298

Good round-trip deal

$132 or less

Good one-way deal

$63 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 Kentucky
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One-way flight from Illinois to Kentucky
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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 April 2025
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Price to beat on a round-trip flight from Illinois to Kentucky.
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Price to beat on a one-way flight from Illinois to Kentucky.
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Find flight deals from Illinois to Kentucky

Cheapest flights from Illinois to Kentucky
Explore the most affordable flight options available from Illinois to Kentucky. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 4, 2025.

This FlightHub deal was found by Cheapflights users on 4/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/125:20 pmORD - BNA
Nonstop1h 32mSpirit Airlines
Fri 5/162:28 pmBNA - ORD
Nonstop1h 57mSpirit Airlines
Deal found 4/3$84
This Kiwi.com deal was found by Cheapflights users on 4/3. 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.
Sun 5/2512:34 pmORD - BNA
Nonstop1h 36mMultiple Airlines
Mon 5/262:28 pmBNA - ORD
Nonstop1h 57mMultiple Airlines
Deal found 4/3$92
This Frontier deal was found by Cheapflights users on 4/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/92:29 pmORD - BNA
Nonstop1h 36mFrontier
Mon 5/125:02 pmBNA - ORD
Nonstop2h 04mFrontier
Deal found 4/3$93
This Southwest deal was found by Cheapflights users on 4/3. 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 5/98:30 pmMDW - BNA
Nonstop1h 30mSouthwest
Mon 5/129:25 pmBNA - MDW
Nonstop1h 35mSouthwest
Deal found 4/3$145
This United Airlines deal was found by Cheapflights users on 4/3. 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 5/98:05 pmORD - BNA
Nonstop1h 44mUnited Airlines
Tue 5/134:51 pmBNA - ORD
Nonstop1h 56mUnited Airlines
Deal found 4/3$152
This Southwest deal was found by Cheapflights users on 4/3. 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 5/74:00 pmORD - BNA
Nonstop1h 40mSouthwest
Sat 5/102:55 pmBNA - ORD
Nonstop1h 50mSouthwest
Deal found 4/3$159
This Frontier deal was found by Cheapflights users on 4/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/156:00 amMDW - CVG
1 stop6h 52mFrontier
Wed 4/164:31 pmCVG - MDW
1 stop8h 50mFrontier
Deal found 4/3$160
This Frontier deal was found by Cheapflights users on 4/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/14:15 pmORD - CVG
1 stop7h 44mFrontier
Mon 5/57:51 pmCVG - ORD
1 stop10h 19mFrontier
Deal found 4/4$160
This American Airlines deal was found by Cheapflights users on 4/4. 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 5/67:10 amORD - BNA
Nonstop1h 39mAmerican Airlines
Thu 5/85:32 amBNA - ORD
Nonstop1h 53mAmerican Airlines
Deal found 4/4$168
This Booking.com deal was found by Cheapflights users on 4/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/14:07 pmSTL - CVG
1 stop7h 16mFrontier
Sun 5/45:45 amCVG - STL
1 stop19h 21mFrontier
Deal found 4/3$170
This CheapOair deal was found by Cheapflights users on 4/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2012:46 pmMDW - BNA
1 stop21h 17mFrontier
Thu 4/247:49 pmBNA - MDW
1 stop23h 17mFrontier
Deal found 4/3$170
This Delta deal was found by Cheapflights users on 4/3. 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 5/91:45 pmORD - BNA
1 stop4h 40mDelta
Mon 5/127:45 pmBNA - ORD
1 stop4h 13mDelta
Deal found 4/3$177

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Kentucky 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 4, 2025.
Use the filters below to find and compare flights from Illinois to Kentucky that are best for you.

Fly from

Illinois

Fly to

Kentucky

Route

Depart

Return

Price

ChicagoNashville

ORD - BNA

ORDBNA

Chicago O'Hare Intl

Mon 5/12

5:20 pm-6:52 pm

Nonstop1h 32m

Nashville Intl

Fri 5/16

2:28 pm-4:25 pm

Nonstop1h 57m

$84

ChicagoNashville

ORD - BNA

ORDBNA

Chicago O'Hare Intl

Sun 5/25

12:34 pm-2:10 pm

Nonstop1h 36m

Nashville Intl

Mon 5/26

2:28 pm-4:25 pm

Nonstop1h 57m

$92

ChicagoNashville

ORD - BNA

ORDBNA

Chicago O'Hare Intl

Fri 5/9

2:29 pm-4:05 pm

Nonstop1h 36m

Nashville Intl

Mon 5/12

5:02 pm-7:06 pm

Nonstop2h 04m

$93

ChicagoNashville

MDW - BNA

MDWBNA

Chicago Midway

Fri 5/9

8:30 pm-10:00 pm

Nonstop1h 30m

Nashville Intl

Mon 5/12

9:25 pm-11:00 pm

Nonstop1h 35m

$145

ChicagoNashville

ORD - BNA

ORDBNA

Chicago O'Hare Intl

Fri 5/9

8:05 pm-9:49 pm

Nonstop1h 44m

Nashville Intl

Tue 5/13

4:51 pm-6:47 pm

Nonstop1h 56m

$152

ChicagoNashville

ORD - BNA

ORDBNA

Chicago O'Hare Intl

Wed 5/7

4:00 pm-5:40 pm

Nonstop1h 40m

Nashville Intl

Sat 5/10

2:55 pm-4:45 pm

Nonstop1h 50m

$159

ChicagoCincinnati

MDW - CVG

MDWCVG

Chicago Midway

Tue 4/15

6:00 am-1:52 pm

1 stop6h 52m

Cincinnati Cinci./N. Kentucky

Wed 4/16

4:31 pm-12:21 am

1 stop8h 50m

$160

ChicagoCincinnati

ORD - CVG

ORDCVG

Chicago O'Hare Intl

Thu 5/1

4:15 pm-12:59 am

1 stop7h 44m

Cincinnati Cinci./N. Kentucky

Mon 5/5

7:51 pm-5:10 am

1 stop10h 19m

$160

ChicagoNashville

ORD - BNA

ORDBNA

Chicago O'Hare Intl

Tue 5/6

7:10 am-8:49 am

Nonstop1h 39m

Nashville Intl

Thu 5/8

5:32 am-7:25 am

Nonstop1h 53m

$168

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Thu 5/1

4:07 pm-12:23 am

1 stop7h 16m

Cincinnati Cinci./N. Kentucky

Sun 5/4

5:45 am-12:06 am

1 stop19h 21m

$170

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/3

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Kentucky

Have a flexible travel schedule? Discover the best time to fly to Kentucky 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 Kentucky

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

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

Find hourly flight availability from Illinois to Kentucky. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 4, 2025.

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

Weekly flight availability from Illinois to Kentucky

Explore weekly flight availability from Illinois to Kentucky. 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 4, 2025.

The most flights from USIL to USKY are scheduled on a Friday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).

Rainfall in Kentucky by month

Plan your trip to Kentucky by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kentucky 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 Kentucky when rainfall is around 3.1 in.

Temperature in Kentucky by month

Plan your trip to Kentucky by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kentucky, 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 Kentucky

Get insights into the airlines that provide service to Kentucky. 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 Kentucky. Reviews last updated April 4, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Illinois to Kentucky to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,836 reviews

Food

7.1

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,836 reviews
Alaska Airlines
8.0
Very good
9,836 reviews

Food

7.1

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,276 reviews
Alaska Airlines
8.0
Very good
9,836 reviews

Food

7.1

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,897 reviews
Alaska Airlines
8.0
Very good
9,836 reviews

Food

7.1

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,618 reviews
Alaska Airlines
8.0
Very good
9,836 reviews

Food

7.1

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Allegiant Air
7.3
Good
732 reviews
Alaska Airlines
8.0
Very good
9,836 reviews

Food

7.1

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Illinois to Kentucky. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    $49 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Spirit Airlines and Southwest, with prices starting from $54 and $73, respectively.

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

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

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

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

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

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

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

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Alternative routes for Illinois to Kentucky

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Illinois to Kentucky

Discover the top 4 airlines that operate flights from Illinois to Kentucky. 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 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
ContourCheapest$102Average$147FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$117Average$299FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$117Average$299FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$157Average$539FlexibilityNo cancel feeOn-time63%

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