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Illinois

$46+ 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 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
CVG — ORD
Nov 12 — Nov 191
Wed 11/12
Wed 11/19
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 October 13, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$108
(Frontier)

One-way from

$46
(United Airlines)

Popular in

February

Cheapest in

August

Average price

$284

Good round-trip deal

$287 or less

Good one-way deal

$155 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. 7% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 13, 2025.

This Frontier deal was found by Cheapflights users on 10/12. 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 11/105:30 pmPIT - ORD
1 stop7h 45mFrontier
Mon 11/178:26 amORD - PIT
1 stop4h 27mFrontier
Deal found 10/12$108
This Frontier deal was found by Cheapflights users on 10/11. 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 11/66:12 pmDTW - ORD
1 stop6h 59mFrontier
Mon 11/105:05 amORD - DTW
1 stop11h 11mFrontier
Deal found 10/11$108
This CheapOair deal was found by Cheapflights users on 10/12. 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.
Tue 11/410:15 amPIT - ORD
1 stop11h 12mSpirit Airlines
Wed 11/510:52 amORD - PIT
1 stop9h 19mSpirit Airlines
Deal found 10/12$114
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
Tue 11/49:39 pmDTW - ORD
1 stop17h 52mMultiple Airlines
Tue 11/116:40 amORD - DTW
1 stop9h 22mMultiple Airlines
Deal found 10/13$127
This Orbitz deal was found by Cheapflights users on 10/11. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/175:30 pmPIT - ORD
1 stop7h 45mMultiple Airlines
Wed 11/1910:52 amORD - PIT
1 stop9h 19mMultiple Airlines
Deal found 10/11$128
This Kiwi.com deal was found by Cheapflights users on 10/12. 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.
Wed 11/510:42 amDTW - ORD
1 stop8h 52mMultiple Airlines
Mon 11/106:40 amORD - DTW
1 stop24h 03mMultiple Airlines
Deal found 10/12$128
This Frontier deal was found by Cheapflights users on 10/12. 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 10/273:55 pmPIT - MDW
1 stop8h 08mFrontier
Fri 10/319:32 amMDW - PIT
1 stop7h 34mFrontier
Deal found 10/12$129
This Frontier deal was found by Cheapflights users on 10/12. 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 10/315:30 pmPIT - ORD
1 stop7h 46mFrontier
Mon 11/38:26 amORD - PIT
1 stop4h 27mFrontier
Deal found 10/12$129
This Frontier deal was found by Cheapflights users on 10/12. 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 11/75:14 pmDTW - ORD
1 stop8h 01mFrontier
Mon 11/105:05 amORD - DTW
1 stop11h 11mFrontier
Deal found 10/12$129
This Booking.com deal was found by Cheapflights users on 10/11. 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 11/137:28 pmDTW - MDW
1 stop26h 03mFrontier
Sun 11/165:40 amMDW - DTW
1 stop6h 09mFrontier
Deal found 10/11$130
This American Airlines deal was found by Cheapflights users on 10/10. 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 11/206:45 amDTW - ORD
Nonstop1h 27mAmerican Airlines
Mon 11/244:15 pmORD - DTW
Nonstop1h 28mAmerican Airlines
Deal found 10/10$131
This Southwest deal was found by Cheapflights users on 10/11. 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 11/2012:55 pmDTW - MDW
Nonstop1h 10mSouthwest
Mon 11/249:35 pmMDW - DTW
Nonstop1h 05mSouthwest
Deal found 10/11$131

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 October 13, 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

Sun 11/2

6:55 pm-11:28 pm

1 stop5h 33m

Chicago O'Hare Intl

Thu 11/6

5:01 am-5:16 pm

1 stop11h 15m

$129

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Mon 11/10

7:00 am-6:39 pm

1 stop12h 39m

Chicago Midway

Mon 11/17

1:37 pm-5:12 pm

1 stop26h 35m

$139

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Thu 11/27

8:25 am-8:57 am

Nonstop1h 32m

Chicago O'Hare Intl

Thu 12/4

10:45 am-1:12 pm

Nonstop1h 27m

$144

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Thu 11/20

3:55 pm-4:24 pm

Nonstop1h 29m

Chicago O'Hare Intl

Mon 11/24

6:45 am-9:08 am

Nonstop1h 23m

$144

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Thu 11/20

8:30 am-8:54 am

Nonstop1h 24m

Chicago Midway

Mon 11/24

6:48 pm-9:05 pm

Nonstop1h 17m

$144

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Sun 11/2

6:55 pm-11:28 pm

1 stop5h 33m

Chicago O'Hare Intl

Fri 11/7

5:11 am-5:12 pm

1 stop11h 01m

$150

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Thu 11/6

12:14 pm-12:27 am

1 stop13h 13m

Chicago O'Hare Intl

Sat 11/8

10:52 am-9:11 pm

1 stop9h 19m

$157

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Fri 10/31

7:01 am-7:45 am

Nonstop1h 44m

Chicago O'Hare Intl

Sat 11/1

9:11 pm-11:44 pm

Nonstop1h 33m

$161

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Thu 11/6

6:00 am-6:40 am

Nonstop1h 40m

Chicago O'Hare Intl

Mon 11/10

2:20 pm-4:45 pm

Nonstop1h 25m

$171

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Wed 12/10

7:30 am-8:04 am

Nonstop1h 34m

Chicago O'Hare Intl

Mon 12/15

8:55 am-11:28 am

Nonstop1h 33m

$171

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

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 October 13, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 28% 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 evenings 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 October 13, 2025.

The most flights from USOH to USIL are scheduled on a Tuesday (69 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (57 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 October 13, 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
4,235 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

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
4,235 reviews
Southwest
8.0
Very good
4,235 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

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
8,973 reviews
Southwest
8.0
Very good
4,235 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

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
11,043 reviews
Southwest
8.0
Very good
4,235 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

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
8,092 reviews
Southwest
8.0
Very good
4,235 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

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
3,135 reviews
Southwest
8.0
Very good
4,235 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

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 32m. Fly via Frontier, Delta, or Spirit Airlines to get the fastest option. There are 234 mi between Ohio and Illinois. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $46. Southwest flights start at $46 while deals on Frontier start at $54 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

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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 October 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$90Average$294FlexibilityNo cancel feeOn-time65%
FrontierCheapest$108Average$158FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$137Average$291FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$137Average$331FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$142Average$296FlexibilityNo cancel feeOn-time63%

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