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Illinois

$44+ 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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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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 November 20, 2024.

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 November 20, 2024.

This Frontier deal was found by Cheapflights users on 11/19. 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.
Mon 12/301:30 pmBNA - ORD
Nonstop1h 53mFrontier
Wed 1/12:45 pmORD - BNA
Nonstop1h 37mFrontier
Deal found 11/19$69
This Southwest deal was found by Cheapflights users on 11/18. 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.
Fri 12/137:35 pmBNA - MDW
Nonstop1h 35mSouthwest
Mon 12/166:20 amMDW - BNA
Nonstop1h 35mSouthwest
Deal found 11/18$98
This Southwest deal was found by Cheapflights users on 11/19. 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.
Mon 12/168:10 pmBNA - ORD
Nonstop1h 50mSouthwest
Wed 12/1811:25 amORD - BNA
Nonstop1h 30mSouthwest
Deal found 11/19$118
This Cheapflightsfares deal was found by Cheapflights users on 11/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/67:13 pmBNA - MDW
1 stop5h 07mFrontier
Sun 12/87:15 amMDW - BNA
1 stop6h 39mFrontier
Deal found 11/19$126
This Priceline deal was found by Cheapflights users on 11/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/183:57 pmBNA - ORD
1 stop5h 56mMultiple Airlines
Wed 12/252:45 pmORD - BNA
Nonstop1h 37mMultiple Airlines
Deal found 11/20$131
This American Airlines deal was found by Cheapflights users on 11/20. 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 12/145:29 amBNA - ORD
Nonstop2h 02mAmerican Airlines
Mon 12/168:45 pmORD - BNA
Nonstop1h 40mAmerican Airlines
Deal found 11/20$132
This United Airlines deal was found by Cheapflights users on 11/19. 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 12/176:00 amBNA - ORD
Nonstop1h 53mUnited Airlines
Tue 12/247:30 amORD - BNA
Nonstop1h 52mUnited Airlines
Deal found 11/19$137
This Mytrip deal was found by Cheapflights users on 11/20. 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.
Thu 12/52:35 pmBNA - STL
1 stop4h 06mMultiple Airlines
Sat 12/76:46 pmSTL - BNA
1 stop19h 08mMultiple Airlines
Deal found 11/20$140
This American Airlines deal was found by Cheapflights users on 11/18. 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.
Mon 12/94:00 pmSDF - ORD
Nonstop1h 34mAmerican Airlines
Tue 12/107:05 pmORD - SDF
Nonstop1h 30mAmerican Airlines
Deal found 11/18$152
This Mytrip deal was found by Cheapflights users on 11/19. 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 12/272:35 pmBNA - STL
1 stop4h 06mSouthern / Mokulele
Fri 1/39:50 amSTL - BNA
1 stop4h 05mSouthern / Mokulele
Deal found 11/19$154
This Mytrip deal was found by Cheapflights users on 11/19. 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 11/221:50 pmTYS - MDW
Nonstop1h 34mAllegiant Air
Mon 11/253:14 pmMDW - TYS
Nonstop1h 27mAllegiant Air
Deal found 11/19$159
This FlightHub deal was found by Cheapflights users on 11/19. 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.
Fri 12/612:54 pmBNA - ORD
1 stop5h 56mSpirit Airlines
Tue 12/106:37 pmORD - BNA
1 stop24h 23mSpirit Airlines
Deal found 11/19$165

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Fri 1/17

2:44 pm-4:42 pm

Nonstop1h 58m

Chicago O'Hare Intl

Sun 1/19

3:09 pm-4:48 pm

Nonstop1h 39m

$63

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Fri 12/13

7:35 pm-9:10 pm

Nonstop1h 35m

Chicago Midway

Mon 12/16

6:20 am-7:55 am

Nonstop1h 35m

$98

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Fri 1/17

8:30 pm-10:20 pm

Nonstop1h 50m

Chicago O'Hare Intl

Mon 1/20

7:00 am-8:30 am

Nonstop1h 30m

$98

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Thu 2/6

5:46 pm-7:44 pm

Nonstop1h 58m

Chicago O'Hare Intl

Sat 2/8

5:05 am-11:39 am

1 stop6h 34m

$113

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Fri 12/6

7:13 pm-12:20 am

1 stop5h 07m

Chicago Midway

Sun 12/8

7:15 am-1:54 pm

1 stop6h 39m

$126

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Sat 12/14

5:29 am-7:31 am

Nonstop2h 02m

Chicago O'Hare Intl

Mon 12/16

8:45 pm-10:25 pm

Nonstop1h 40m

$132

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Tue 12/17

6:00 am-7:53 am

Nonstop1h 53m

Chicago O'Hare Intl

Tue 12/24

7:30 am-9:22 am

Nonstop1h 52m

$137

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Thu 12/5

2:35 pm-6:41 pm

1 stop4h 06m

Lambert-St Louis

Sat 12/7

6:46 pm-1:54 pm

1 stop19h 08m

$147

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Fri 12/13

7:00 am-7:41 am

Nonstop1h 41m

Chicago O'Hare Intl

Mon 12/16

7:50 pm-10:26 pm

Nonstop1h 36m

$147

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Mon 12/9

4:00 pm-4:34 pm

Nonstop1h 34m

Chicago O'Hare Intl

Tue 12/10

7:05 pm-9:35 pm

Nonstop1h 30m

$152

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 60 results
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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 November 20, 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.

Weekly flight availability from Kentucky to Illinois

Explore weekly flight availability from Kentucky to Illinois. 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 November 20, 2024.

The most flights from USKY to USIL are scheduled on a Wednesday (35 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (16 on average).

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 November 20, 2024.
See what other customers who have flown with United Airlines, Southwest and American Airlines 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.
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Crew

8.7

Boarding

8.2

Overall

8.1

Food

7.2

Entertainment

7.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Crew

8.7

Boarding

8.2

Overall

8.1

Food

7.2

Entertainment

7.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Crew

8.7

Boarding

8.2

Overall

8.1

Food

7.2

Entertainment

7.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

JetBlue
7.5
Good
3,394 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Crew

8.7

Boarding

8.2

Overall

8.1

Food

7.2

Entertainment

7.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Crew

8.7

Boarding

8.2

Overall

8.1

Food

7.2

Entertainment

7.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

WestJet
7.3
Good
2,811 reviews
Southwest
8.1
Very good
5,014 reviews

Comfort

8.1

Crew

8.7

Boarding

8.2

Overall

8.1

Food

7.2

Entertainment

7.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

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 $44 on Frontier. Other airlines that offer cheap prices include Southwest from $49 and United Airlines from $49 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

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Alternative routes for Kentucky to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$109Average$260FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$111Average$281FlexibilityNo cancel feeOn-time71%
ContourCheapest$117Average$143FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$135Average$277FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$156Average$282FlexibilityNo cancel feeOn-time63%
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