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Cheap flights from Kentucky to Illinois from $67

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kentucky to Illinois departing on 4/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Kentucky to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
5:20 pm - 11:19 pm
CVG
-
STL
6h 59m
1 stop
Frontier Logo
8:39 am - 7:23 pm
STL
-
CVG
9h 44m
1 stop
$140Frontier
Tue, Apr 21 - Fri, Apr 24
Frontier Logo
8:17 pm - 7:32 pm
CVG
-
STL
24h 15m
1 stop
Frontier Logo
8:39 am - 7:23 pm
STL
-
CVG
9h 44m
1 stop
$141Frontier
Fri, Apr 17 - Fri, Apr 24
Southern / Mokulele Logo
2:35 pm - 6:36 pm
BNA
-
STL
4h 01m
1 stop
Southern / Mokulele Logo
9:50 am - 1:48 pm
STL
-
BNA
3h 58m
1 stop
$154Southern / Mokulele
Thu, Apr 9 - Mon, Apr 13
Southern / Mokulele Logo
2:35 pm - 6:36 pm
BNA
-
STL
4h 01m
1 stop
Southern / Mokulele Logo
9:50 am - 1:48 pm
STL
-
BNA
3h 58m
1 stop
$171Southern / Mokulele
Thu, Apr 2 - Sat, Apr 4
United Airlines Logo
10:10 am - 10:46 am
CVG
-
ORD
1h 36mnonstop
United Airlines Logo
6:05 pm - 8:29 pm
ORD
-
CVG
1h 24mnonstop
$175United Airlines
Wed, Apr 22 - Wed, Apr 29
United Airlines Logo
9:07 am - 9:47 am
SDF
-
ORD
1h 40mnonstop
United Airlines Logo
6:45 am - 9:10 am
ORD
-
SDF
1h 25mnonstop
$177United Airlines
Tue, Apr 21 - Tue, Apr 28
Southwest Logo
7:35 pm - 7:50 pm
CVG
-
MDW
1h 15mnonstop
Southwest Logo
8:00 am - 12:40 pm
MDW
-
CVG
3h 40m
1 stop
$185Southwest
Tue, Apr 14 - Wed, Apr 15
Southwest Logo
5:55 pm - 7:10 pm
BNA
-
STL
1h 15mnonstop
Southwest Logo
8:45 pm - 9:55 pm
STL
-
BNA
1h 10mnonstop
$191Southwest
Sat, Apr 18 - Mon, Apr 20
American Airlines Logo
6:31 am - 12:36 pm
SDF
-
ORD
7h 05m
1 stop
American Airlines Logo
9:16 pm - 11:48 pm
ORD
-
SDF
1h 32mnonstop
$220American Airlines
Sat, Apr 18 - Wed, Apr 22
American Airlines Logo
8:36 am - 9:21 am
SDF
-
ORD
1h 45mnonstop
American Airlines Logo
1:19 pm - 6:49 pm
ORD
-
SDF
4h 30m
1 stop
$221American Airlines
Wed, May 20 - Sat, May 23

United Airlines flights from Kentucky to Illinois

Our best United Airlines deals on Kentucky to Illinois flight tickets
United Airlines
Apr 22
CVG10:10 amCincinnati Cinci./N. Kentucky
1h 36m
ORD10:46 amChicago O'Hare Intl
Apr 29
ORD6:05 pmChicago O'Hare Intl
1h 24m
CVG8:29 pmCincinnati Cinci./N. Kentucky
$175
United Airlines
Apr 21
SDF9:07 amLouisville Intl
1h 40m
ORD9:47 amChicago O'Hare Intl
Apr 28
ORD6:45 amChicago O'Hare Intl
1h 25m
SDF9:10 amLouisville Intl
$177
United Airlines
Apr 22
CVG8:30 amCincinnati Cinci./N. Kentucky
1h 34m
ORD9:04 amChicago O'Hare Intl
Apr 23
ORD10:45 amChicago O'Hare Intl
1h 25m
CVG1:10 pmCincinnati Cinci./N. Kentucky
$193

Delta flights from Kentucky to Illinois

Our best Delta deals on Kentucky to Illinois flight tickets
Delta
Apr 14
CVG5:59 amCincinnati Cinci./N. Kentucky
3h 48m
1 stop
MDW8:47 amChicago Midway
Apr 14
MDW1:24 pmChicago Midway
3h 47m
1 stop
CVG6:11 pmCincinnati Cinci./N. Kentucky
$195
Delta
Apr 21
SDF11:12 amLouisville Intl
6h 30m
1 stop
ORD4:42 pmChicago O'Hare Intl
Apr 28
ORD8:52 amChicago O'Hare Intl
4h 38m
1 stop
SDF2:30 pmLouisville Intl
$197
Delta
Apr 18
TYS7:50 amKnoxville McGhee Tyson
5h 59m
1 stop
ORD12:49 pmChicago O'Hare Intl
Apr 20
ORD1:36 pmChicago O'Hare Intl
6h 44m
1 stop
TYS9:20 pmKnoxville McGhee Tyson
$213

momondo Fare Finder

 
Customize your flight search to find flights from Kentucky to Illinois 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, momondo users made 832,500 searches. Data last updated March 29, 2026.
Use the filters below to find and compare flights from Kentucky to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 4/21

5:20 pm-11:19 pm

1 stop6h 59m

Lambert-St Louis

Fri 4/24

8:39 am-7:23 pm

1 stop9h 44m

$140

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 4/17

8:17 pm-7:32 pm

1 stop24h 15m

Lambert-St Louis

Fri 4/24

8:39 am-7:23 pm

1 stop9h 44m

$141

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Thu 4/9

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

Mon 4/13

9:50 am-1:48 pm

1 stop3h 58m

$154

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Thu 4/2

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

Sat 4/4

9:50 am-1:48 pm

1 stop3h 58m

$171

CincinnatiChicago

CVG - ORD

CVGORD

Cincinnati Cinci./N. Kentucky

Wed 4/22

10:10 am-10:46 am

Nonstop1h 36m

Chicago O'Hare Intl

Wed 4/29

6:05 pm-8:29 pm

Nonstop1h 24m

$175

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Tue 4/21

9:07 am-9:47 am

Nonstop1h 40m

Chicago O'Hare Intl

Tue 4/28

6:45 am-9:10 am

Nonstop1h 25m

$177

CincinnatiChicago

CVG - MDW

CVGMDW

Cincinnati Cinci./N. Kentucky

Tue 4/14

7:35 pm-7:50 pm

Nonstop1h 15m

Chicago Midway

Wed 4/15

8:00 am-12:40 pm

1 stop3h 40m

$185
Quickest round-trip

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Sat 4/18

5:55 pm-7:10 pm

Nonstop1h 15m

Lambert-St Louis

Mon 4/20

8:45 pm-9:55 pm

Nonstop1h 10m

$191

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Sat 4/18

6:31 am-12:36 pm

1 stop7h 05m

Chicago O'Hare Intl

Wed 4/22

9:16 pm-11:48 pm

Nonstop1h 32m

$220

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Wed 5/20

8:36 am-9:21 am

Nonstop1h 45m

Chicago O'Hare Intl

Sat 5/23

1:19 pm-6:49 pm

1 stop4h 30m

$221

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Kentucky to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Kentucky is in November. Flight prices, which tend to average around $196, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of November, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $225.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Kentucky to Illinois is on a Thursday when prices can be found for as low as $501. Flights from Kentucky to Illinois on a Sunday will generally be more expensive and average around $656. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the morning. Flights from Kentucky to Illinois during this time can be as low as $492. Flights at noon are often more expensive with an average ticket price of $874.

What is the cheapest Kentucky to Illinois flight route?

Fly from Owensboro Daviess County to Chicago O'Hare Intl for the best Kentucky - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Kentucky when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $276 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Kentucky for as low as $141 on momondo.

What cabin class options are available on Kentucky to Illinois flights?

There are 4 cabin classes available to choose from on Kentucky to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Kentucky to Illinois flights?

You could potentially save up to 60% on your flight if you consider stops on a Kentucky to Illinois flight.

Cheap Kentucky to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kentucky to Illinois

Best Price Found

$192

Fastest flight time

1h 05m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from Kentucky in the past 72 hours is $192. The best round-trip flight deal from Kentucky to Illinois found on momondo in the last 72 hours is $107.
The fastest flight from Kentucky to Illinois takes 1h 05m
Direct flights go from Kentucky to Illinois every day.
There are 98 airports in Illinois. From Kentucky there are direct flights to Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL).
Search flight deals

  • When did momondo last update prices for flights from Kentucky to Illinois?

    Prices for flights from Kentucky to Illinois are refreshed on a daily basis.

  • How many operators does momondo search for flights from Kentucky to Illinois?

  • How old do you have to be to fly from Kentucky to Illinois?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Kentucky to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Kentucky to Illinois?

Best airlines flying from Kentucky to Illinois

Compare and see reviews for airlines that fly from Kentucky to Illinois with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $97Free CancellationRating
7.1
11,518 reviews
Search American Airlines flights
SouthwestPriceFrom $97Free CancellationRating
8.0
4,332 reviews
Search Southwest flights
ContourPriceFrom $104Free CancellationRating
7.6
42 reviews
Search Contour flights
United AirlinesPriceFrom $114Free CancellationRating
7.4
9,507 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Kentucky to Illinois?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Kentucky to Illinois for you.

Can I find flights from Kentucky to Illinois with flexible booking policies on momondo?

Flights from Kentucky to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Kentucky to Illinois?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Kentucky to Illinois.

I’m not ready to book a flight from Kentucky to Illinois right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Kentucky to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Illinois trip

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