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$44+ Cheap flights from Ohio 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
CVG — ORD
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
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Cheap flight deals from Ohio to Illinois

Keep the following information in mind while searching for Ohio to Illinois flight deals. Data was last updated November 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$97
(United Airlines)

One-way from

$44
(Expedia)

Popular in

December

Cheapest in

August

Average price

$297

Good round-trip deal

$282 or less

Good one-way deal

$144 or less
Provider with most accurate pricing for Cleveland Hopkins Intl-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Cleveland Hopkins Intl-Chicago (CHI) flights.
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From Ohio to Illinois
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One-way flight from Ohio to Illinois
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Highest demand for flights based on searches. 8% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($2 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Ohio to Illinois.
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Price to beat on a one-way flight from Ohio to Illinois.
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Find flight deals from Ohio to Illinois

Cheapest flights from Ohio to Illinois
Explore the most affordable flight options available from Ohio to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

This United Airlines deal was found by Cheapflights users on 11/24. 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.
Thu 12/259:12 amDTW - ORD
Nonstop1h 43mUnited Airlines
Thu 12/257:55 pmORD - DTW
Nonstop1h 35mUnited Airlines
Deal found 11/24$97
This Delta deal was found by Cheapflights users on 11/24. 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 12/248:25 amDTW - ORD
Nonstop1h 36mDelta
Thu 12/257:00 amORD - DTW
Nonstop1h 28mDelta
Deal found 11/24$117
This Delta deal was found by Cheapflights users on 11/24. 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 12/258:25 amDTW - MDW
Nonstop1h 24mDelta
Thu 12/256:08 pmMDW - DTW
Nonstop1h 20mDelta
Deal found 11/24$117
This United Airlines deal was found by Cheapflights users on 11/26. 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.
Wed 12/247:15 amDTW - ORD
Nonstop1h 43mUnited Airlines
Wed 12/316:10 pmORD - DTW
Nonstop1h 48mUnited Airlines
Deal found 11/26$127
This Kiwi.com deal was found by Cheapflights users on 11/24. 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.
Mon 12/87:08 amDTW - ORD
1 stop8h 49mMultiple Airlines
Fri 12/128:36 amORD - DTW
1 stop22h 08mMultiple Airlines
Deal found 11/24$139
This Kiwi.com deal was found by Cheapflights users on 11/24. 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.
Mon 12/87:08 amDTW - ORD
1 stop8h 49mMultiple Airlines
Mon 12/1511:44 amORD - DTW
1 stop19h 23mMultiple Airlines
Deal found 11/24$144
This United Airlines deal was found by Cheapflights users on 11/24. 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 12/305:49 amDTW - ORD
Nonstop1h 41mUnited Airlines
Thu 1/19:05 pmORD - DTW
Nonstop1h 33mUnited Airlines
Deal found 11/24$147
This Southwest deal was found by Cheapflights users on 11/23. 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 12/256:10 amDTW - MDW
Nonstop1h 30mSouthwest
Tue 12/309:30 amMDW - DTW
Nonstop1h 10mSouthwest
Deal found 11/23$147
This American Airlines deal was found by Cheapflights users on 11/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:00 amDTW - ORD
Nonstop1h 25mAmerican Airlines
Thu 12/251:30 pmORD - DTW
Nonstop1h 32mAmerican Airlines
Deal found 11/25$154
This United Airlines deal was found by Cheapflights users on 11/24. 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 12/225:49 amDTW - ORD
Nonstop1h 41mUnited Airlines
Thu 12/259:05 pmORD - DTW
Nonstop1h 33mUnited Airlines
Deal found 11/24$156
This Delta deal was found by Cheapflights users on 11/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:54 pmDTW - ORD
Nonstop1h 28mDelta
Thu 1/17:00 amORD - DTW
Nonstop1h 28mDelta
Deal found 11/25$157
This Delta deal was found by Cheapflights users on 11/24. 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.
Tue 12/308:25 amDTW - MDW
Nonstop1h 24mDelta
Thu 1/19:29 amMDW - DTW
Nonstop1h 14mDelta
Deal found 11/24$157

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ohio 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 November 26, 2025.
Use the filters below to find and compare flights from Ohio to Illinois that are best for you.

Fly from

Ohio

Fly to

Illinois

Route

Depart

Return

Price

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Thu 12/25

5:49 am-6:30 am

Nonstop1h 41m

Chicago O'Hare Intl

Thu 1/1

9:05 pm-11:38 pm

Nonstop1h 33m

$97

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Sat 1/17

6:00 pm-6:40 pm

Nonstop1h 40m

Chicago Midway

Sun 1/18

1:25 pm-3:30 pm

Nonstop1h 05m

$97

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Wed 12/31

4:54 pm-5:22 pm

Nonstop1h 28m

Chicago O'Hare Intl

Thu 1/1

7:00 am-9:28 am

Nonstop1h 28m

$117

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Sat 1/17

12:40 pm-1:08 pm

Nonstop1h 28m

Chicago O'Hare Intl

Sun 1/18

1:55 pm-4:13 pm

Nonstop1h 18m

$117

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Wed 12/24

8:25 am-9:01 am

Nonstop1h 36m

Chicago O'Hare Intl

Wed 12/31

7:00 am-9:28 am

Nonstop1h 28m

$117

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Thu 12/25

8:25 am-8:49 am

Nonstop1h 24m

Chicago Midway

Thu 12/25

6:08 pm-8:28 pm

Nonstop1h 20m

$117

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Sat 1/17

8:25 am-8:52 am

Nonstop1h 27m

Chicago Midway

Sun 1/18

9:32 am-11:43 am

Nonstop1h 11m

$118

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Wed 12/24

7:15 am-7:58 am

Nonstop1h 43m

Chicago O'Hare Intl

Tue 12/30

9:05 pm-11:38 pm

Nonstop1h 33m

$147

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Mon 12/22

5:49 am-6:30 am

Nonstop1h 41m

Chicago O'Hare Intl

Thu 12/25

9:05 pm-11:38 pm

Nonstop1h 33m

$156

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Tue 1/20

7:15 am-7:58 am

Nonstop1h 43m

Chicago O'Hare Intl

Thu 1/22

2:23 pm-5:03 pm

Nonstop1h 40m

$156

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

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

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

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

Currently, September is the cheapest month in which you can book a flight from Ohio to Illinois (average of $96). Flying from Ohio to Illinois in February is currently the most expensive (average of $167). 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 OH to IL?

Find hourly flight availability from Ohio 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 26, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 27% on flights from Ohio to Illinois by exploring options for tickets in the morning.

What is the cheapest day to fly from Ohio to Illinois?

Use this chart to determine the cheapest time to fly round-trip from Ohio to Illinois. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Ohio to Illinois flight should consider departing on Wednesday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Ohio to Illinois

Explore weekly flight availability from Ohio 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 26, 2025.

The most flights from USOH to USIL are scheduled on a Wednesday (64 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (10 on average).

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 26, 2025.
Read through reviews of airlines operating flights from Ohio to Illinois, such as Southwest, United Airlines, and American Airlines. 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
8.0
Very good
4,254 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,254 reviews
Southwest
8.0
Very good
4,254 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,046 reviews
Southwest
8.0
Very good
4,254 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,038 reviews
Southwest
8.0
Very good
4,254 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,158 reviews
Southwest
8.0
Very good
4,254 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,099 reviews
Southwest
8.0
Very good
4,254 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

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

  • How long is the flight from Ohio to Illinois?

    There are many flights that can get you from Ohio to Illinois in 1h 28m. Fly via United Airlines, Southwest, or Delta to get the fastest option. There are 234 mi between Ohio and Illinois. Generally, flights for this route are nonstop.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $49. Southwest flights start at $49 while deals on Frontier start at $82 one-way.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Ohio to Illinois (average of $96). Flying from Ohio to Illinois in February is currently the most expensive (average of $167). 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

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Alternative routes for Ohio 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 Ohio to Illinois

Discover the top 5 airlines that operate flights from Ohio 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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$90Average$294FlexibilityNo cancel feeOn-time65%
FrontierCheapest$108Average$190FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$137Average$323FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$138Average$291FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$141Average$302FlexibilityNo cancel feeOn-time63%

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