Illinois

$47+ Cheap flights from Kentucky to Illinois

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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
Dec 23 — Dec 301
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Kentucky to Illinois with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Kentucky to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Kentucky (USKY) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2024.

Round-trip from

$69
(Frontier)

One-way from

$49
(Priceline)
From Kentucky to Illinois
One-way flight from Kentucky to Illinois

Find flight deals from Kentucky to Illinois

Cheapest flights from Kentucky to Illinois
Explore the most affordable flight options available from Kentucky to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This Frontier deal was found by Cheapflights users on 12/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/251:30 pmBNA - ORD
Nonstop1h 53mFrontier
Wed 1/12:45 pmORD - BNA
Nonstop1h 37mFrontier
Deal found 12/18$98
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/318:00 amBNA - ORD
Nonstop1h 48mUnited Airlines
Wed 2/52:16 pmORD - BNA
Nonstop1h 44mUnited Airlines
Deal found 12/17$167
This Gotogate deal was found by Cheapflights users on 12/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/272:35 pmBNA - STL
1 stop4h 06mSouthern / Mokulele
Sat 12/289:50 amSTL - BNA
1 stop4h 05mSouthern / Mokulele
Deal found 12/17$199
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/313:55 pmBNA - ORD
1 stop7h 42mAmerican Airlines
Wed 2/52:12 pmORD - BNA
Nonstop1h 36mAmerican Airlines
Deal found 12/17$202
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/311:30 pmLEX - ORD
Nonstop1h 36mAmerican Airlines
Tue 1/78:35 pmORD - LEX
Nonstop1h 30mAmerican Airlines
Deal found 12/17$221
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/246:37 amSDF - ORD
Nonstop1h 41mAmerican Airlines
Tue 12/315:40 pmORD - SDF
Nonstop1h 25mAmerican Airlines
Deal found 12/17$225
This Southwest deal was found by Cheapflights users on 12/18. 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.
Tue 12/311:55 pmSDF - MDW
Nonstop1h 15mSouthwest
Wed 1/110:00 amMDW - SDF
Nonstop1h 15mSouthwest
Deal found 12/18$226
This Mytrip deal was found by Cheapflights users on 12/16. 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.
Fri 12/204:50 pmCVG - MDW
1 stop7h 24mFrontier
Fri 1/103:37 pmMDW - CVG
1 stop7h 07mFrontier
Deal found 12/16$234
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/258:29 amCVG - ORD
Nonstop1h 30mAmerican Airlines
Wed 12/251:50 pmORD - CVG
Nonstop1h 19mAmerican Airlines
Deal found 12/17$239
This Southwest deal was found by Cheapflights users on 12/17. 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 12/318:45 pmBNA - MDW
Nonstop1h 35mSouthwest
Wed 1/15:30 pmMDW - BNA
Nonstop1h 30mSouthwest
Deal found 12/17$248
This American Airlines deal was found by Cheapflights users on 12/18. 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.
Fri 12/276:41 pmTYS - ORD
Nonstop1h 58mAmerican Airlines
Fri 1/318:30 amORD - TYS
Nonstop1h 44mAmerican Airlines
Deal found 12/18$254
This Delta deal was found by Cheapflights users on 12/17. 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 12/256:00 amCVG - ORD
1 stop4h 21mDelta
Wed 12/255:30 pmORD - CVG
1 stop4h 24mDelta
Deal found 12/17$258

Find flights from Kentucky to Illinois within your budget

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, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Thu 1/16

5:46 pm-7:44 pm

Nonstop1h 58m

Chicago O'Hare Intl

Sun 1/19

3:09 pm-4:48 pm

Nonstop1h 39m

$69

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Wed 1/15

8:00 am-8:13 pm

1 stop12h 13m

Chicago O'Hare Intl

Thu 1/16

3:12 pm-4:51 pm

Nonstop1h 39m

$122

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Fri 1/24

5:43 pm-12:17 am

1 stop6h 34m

Chicago Midway

Sun 2/9

7:15 am-1:54 pm

1 stop6h 39m

$128

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Tue 1/14

12:40 pm-2:35 pm

Nonstop1h 55m

Chicago O'Hare Intl

Tue 1/21

2:16 pm-4:00 pm

Nonstop1h 44m

$137

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Tue 1/14

12:00 pm-1:35 pm

Nonstop1h 35m

Chicago Midway

Tue 1/21

10:25 am-11:55 am

Nonstop1h 30m

$138

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Tue 2/18

7:10 am-8:57 am

Nonstop1h 47m

Chicago O'Hare Intl

Thu 2/20

1:31 pm-3:00 pm

Nonstop1h 29m

$142

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Tue 1/7

2:35 pm-6:41 pm

1 stop4h 06m

Lambert-St Louis

Tue 1/14

9:50 am-1:55 pm

1 stop4h 05m

$154

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Tue 1/14

1:33 pm-10:55 pm

1 stop9h 22m

Chicago O'Hare Intl

Tue 1/21

7:00 am-7:18 pm

1 stop12h 18m

$157

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Tue 2/18

8:30 pm-10:20 pm

Nonstop1h 50m

Chicago O'Hare Intl

Thu 2/20

4:00 pm-10:25 pm

1 stop6h 25m

$164

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Fri 1/24

5:53 pm-10:20 pm

1 stop4h 27m

Chicago Midway

Wed 2/5

2:08 pm-8:56 pm

1 stop6h 48m

$176

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Kentucky to Illinois

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

Travel insights for flights from Kentucky to Illinois

Get recent, data-driven insights about flights from Kentucky to Illinois including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Kentucky to Illinois (average of $232). Flying from Kentucky to Illinois in June is currently the most expensive (average of $308). 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 KY to IL?

Find hourly flight availability from Kentucky to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

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

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated December 18, 2024.
See what other customers who have flown with Delta, American Airlines and Southwest from Kentucky to Illinois have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.1
Very good
4,848 reviews
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
8,604 reviews
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Avelo Airlines
7.5
Good
74 reviews
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
3,279 reviews
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
9,059 reviews
8.1
Very good
4,848 reviews

Entertainment

7.7

Boarding

8.2

Crew

8.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Kentucky to Illinois. 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 Kentucky to Illinois one-way?

    One-way options have recently been found by users for as low as $49 on Frontier. Other airlines that offer cheap prices include Southwest from $59 and United Airlines from $59 one-way.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Kentucky to Illinois (average of $232). Flying from Kentucky to Illinois in June is currently the most expensive (average of $308). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Kentucky to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Kentucky to Illinois

Discover the top 5 airlines that operate flights from Kentucky to Illinois. 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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$111Average$302FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$114Average$281FlexibilityNo cancel feeOn-time71%
ContourCheapest$117Average$144FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$135Average$286FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$156Average$282FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.