What is the cheapest airline that flies from Ohio to Illinois?

Frontier, Delta, and United Airlines are the most popular carriers operating from Ohio to Illinois

How many flights depart from Ohio to Illinois on average per day?

254 flights are operational daily from Ohio to Illinois as of March 2026. The most popular departure time for this route is 9:00AM, with 44% of flights per day taking off at noon.

What airlines fly to Illinois?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Illinois from Ohio according to our data. United Airlines is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

How many flights depart from Ohio to Illinois on average per week?

1,784 flights are operational weekly from Ohio to Illinois as of March 2026. The most popular departure day for this route is Sun, with 22% of flights per week taking off on this day.

How long is the flight from Ohio to Illinois?

The flight from Ohio to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Dayton (a popular airport in Ohio) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 1h 26m on average. If you fly from Cincinnati (another popular airport in Ohio) to Chicago O'Hare Intl Airport, then the average flight time is 1h 31m.

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

Prices for flights from Ohio to Illinois are updated daily.

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

There are 6 operators available for flights from Ohio to Illinois as of March 2026.

How old do you have to be to fly from Ohio 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 Ohio to Illinois.

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

The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$67 Cheap Flights from Ohio to Illinois in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Ohio to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:55 am - 7:23 pm

DTW

STL

12h 28m

1 stop

5:27 pm - 12:39 am

STL

DTW

6h 12m

1 stop

$140Frontier

Sat, May 9 - Wed, May 13

3:33 pm - 10:14 pm

CLE

MDW

7h 41m

1 stop

6:10 am - 2:26 pm

MDW

CLE

7h 16m

1 stop

$140Frontier

Tue, Apr 28 - Wed, Apr 29

4:28 pm - 11:44 pm

CLE

ORD

8h 16m

1 stop

4:38 pm - 12:59 am

ORD

CLE

7h 21m

1 stop

$140Frontier

Thu, Apr 16 - Fri, Apr 17

8:55 pm - 10:23 am

CLE

ORD

14h 28m

1 stop

11:28 am - 7:44 am

ORD

CLE

19h 16m

1 stop

$142Multiple Airlines

Thu, Apr 16 - Mon, Apr 20

8:55 pm - 10:23 am

CLE

ORD

14h 28m

1 stop

4:28 pm - 7:44 am

ORD

CLE

14h 16m

1 stop

$143Multiple Airlines

Thu, Apr 16 - Mon, Apr 20

10:10 am - 10:46 am

CVG

ORD

1h 36mnonstop

6:05 pm - 8:29 pm

ORD

CVG

1h 24mnonstop

$175United Airlines

Wed, Apr 22 - Wed, Apr 29

2:09 pm - 2:55 pm

PIT

ORD

1h 46mnonstop

9:20 pm - 11:53 pm

ORD

PIT

1h 33mnonstop

$177United Airlines

Sat, Apr 25 - Sat, Apr 25

1:15 pm - 1:30 pm

CMH

MDW

1h 15mnonstop

1:05 pm - 3:15 pm

MDW

CMH

1h 10mnonstop

$189Southwest

Tue, Apr 21 - Tue, Apr 28

5:40 am - 8:40 am

CMH

MDW

4h 00m

1 stop

3:15 pm - 5:30 pm

MDW

CMH

1h 15mnonstop

$199Southwest

Tue, Jun 9 - Tue, Jun 9

8:38 pm - 9:40 pm

PIT

ORD

2h 02mnonstop

6:59 pm - 9:49 pm

ORD

PIT

1h 50mnonstop

$201American Airlines

Thu, Jun 4 - Mon, Jun 8

United Airlines flights from Ohio to Illinois

Our best United Airlines deals on Ohio 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

CLE12:25 pmCleveland Hopkins Intl

1h 33m

ORD12:58 pmChicago O'Hare Intl

Apr 21

ORD9:33 pmChicago O'Hare Intl

1h 26m

CLE11:59 pmCleveland Hopkins Intl

$177

United Airlines

Jun 9

CMH5:30 amColumbus

1h 39m

ORD6:09 amChicago O'Hare Intl

Jun 9

ORD10:40 amChicago O'Hare Intl

1h 37m

CMH1:17 pmColumbus

$189

Frontier flights from Ohio to Illinois

Our best Frontier deals on Ohio to Illinois flight tickets

Frontier

Apr 16

CLE4:28 pmCleveland Hopkins Intl

8h 16m

1 stop

ORD11:44 pmChicago O'Hare Intl

Apr 17

ORD4:38 pmChicago O'Hare Intl

7h 21m

1 stop

CLE12:59 amCleveland Hopkins Intl

$140

Frontier

Apr 16

CLE2:24 pmCleveland Hopkins Intl

11h 28m

1 stop

ORD12:52 amChicago O'Hare Intl

Apr 20

ORD5:48 pmChicago O'Hare Intl

12h 51m

1 stop

CLE7:39 amCleveland Hopkins Intl

$141

Frontier

Apr 16

CLE5:30 amCleveland Hopkins Intl

27h 29m

1 stop

MDW7:59 amChicago Midway

Apr 20

MDW7:30 amChicago Midway

16h 13m

1 stop

CLE12:43 amCleveland Hopkins Intl

$145

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Sat 5/9

7:55 am-7:23 pm

1 stop12h 28m

Lambert-St Louis

Wed 5/13

5:27 pm-12:39 am

1 stop6h 12m

$140

ClevelandChicago

CLE - MDW

CLEMDW

Cleveland Hopkins Intl

Tue 4/28

3:33 pm-10:14 pm

1 stop7h 41m

Chicago Midway

Wed 4/29

6:10 am-2:26 pm

1 stop7h 16m

$140

ClevelandChicago

CLE - ORD

CLEORD

Cleveland Hopkins Intl

Thu 4/16

4:28 pm-11:44 pm

1 stop8h 16m

Chicago O'Hare Intl

Fri 4/17

4:38 pm-12:59 am

1 stop7h 21m

$140

ClevelandChicago

CLE - ORD

CLEORD

Cleveland Hopkins Intl

Thu 4/16

8:55 pm-10:23 am

1 stop14h 28m

Chicago O'Hare Intl

Mon 4/20

11:28 am-7:44 am

1 stop19h 16m

$142

ClevelandChicago

CLE - ORD

CLEORD

Cleveland Hopkins Intl

Thu 4/16

8:55 pm-10:23 am

1 stop14h 28m

Chicago O'Hare Intl

Mon 4/20

4:28 pm-7:44 am

1 stop14h 16m

$143

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

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Sat 4/25

2:09 pm-2:55 pm

Nonstop1h 46m

Chicago O'Hare Intl

Sat 4/25

9:20 pm-11:53 pm

Nonstop1h 33m

$177

Quickest round-trip

ColumbusChicago

CMH - MDW

CMHMDW

Columbus

Tue 4/21

1:15 pm-1:30 pm

Nonstop1h 15m

Chicago Midway

Tue 4/28

1:05 pm-3:15 pm

Nonstop1h 10m

$189

ColumbusChicago

CMH - MDW

CMHMDW

Columbus

Tue 6/9

5:40 am-8:40 am

1 stop4h 00m

Chicago Midway

Tue 6/9

3:15 pm-5:30 pm

Nonstop1h 15m

$199

PittsburghChicago

PIT - ORD

PITORD

Pittsburgh

Thu 6/4

8:38 pm-9:40 pm

Nonstop2h 02m

Chicago O'Hare Intl

Mon 6/8

6:59 pm-9:49 pm

Nonstop1h 50m

$201

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ohio 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

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Ohio is in August. Flight prices, which tend to average around $187, 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 August, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $241.

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

The cheapest day to depart from Ohio to Illinois is on a Friday when prices can be found for as low as $512. Flights from Ohio to Illinois on a Sunday will generally be more expensive and average around $685. 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 Ohio to Illinois during this time can be as low as $482. Flights in the afternoon are often more expensive with an average ticket price of $909.

What is the cheapest Ohio to Illinois flight route?

Fly from Cleveland Hopkins Intl to Chicago Midway for the best Ohio - 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 Ohio when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $304 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Ohio for as low as $88 on momondo.

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

There are 4 cabin classes available to choose from on Ohio 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 Ohio to Illinois flights?

No. A direct flight is the cheapest option for a flight between Ohio to Illinois.

Cheap Ohio to Illinois flight deals and tips

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

Best Price Found	$182
Fastest flight time	1h 05m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Ohio in the past 72 hours is $182. The best round-trip flight deal from Ohio to Illinois found on momondo in the last 72 hours is $276.

The fastest flight from Ohio to Illinois takes 1h 05m

Direct flights go from Ohio to Illinois every day.

There are 98 airports in Illinois. From Ohio there are direct flights to Chicago Midway (MDW).

Search flight deals

When did momondo last update prices for flights from Ohio to Illinois?
Prices for flights from Ohio to Illinois are updated daily.
How many operators does momondo search for flights from Ohio to Illinois?
There are 6 operators available for flights from Ohio to Illinois as of March 2026.
How old do you have to be to fly from Ohio 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 Ohio to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Ohio to Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ohio to Illinois is Embraer 175 (Enhanced Winglets) (10.45% of total bookings). The next most popular plane models are Boeing 737-800 (9.60%), Boeing 737 MAX 8 (9.45%), and Canadair (Bombardier) Regional Jet 700 (9.31%).

Best airlines flying from Ohio to Illinois

Compare and see reviews for airlines that fly from Ohio to Illinois with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $128	Free Cancellation	Rating 7.1 11,521 reviews	Search American Airlines flights
United Airlines	PriceFrom $131	Free Cancellation	Rating 7.4 9,508 reviews	Search United Airlines flights
Southwest	PriceFrom $137	Free Cancellation	Rating 8.0 4,331 reviews	Search Southwest flights
Frontier	PriceFrom $143	Free Cancellation	Rating 5.7 3,009 reviews	Search Frontier flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ohio to Illinois. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Ohio 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 Ohio to Illinois?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Ohio.

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

Price alerts on flights to Illinois from Ohio are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Tue 4/28

Tue 5/5

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Illinois

Popular cities

Other flights from Ohio

Other flights to Illinois

Airlines

Complete your trip

Feeling lucky

Popular cities in Illinois

Flights to New Yorkfrom $58

Flights to Los Angelesfrom $53

Flights to Orlandofrom $49

Flights to Miamifrom $53

Flights to Chicagofrom $56

Flights to San Franciscofrom $55

Flights to Las Vegasfrom $35

Flights to Washington, D.C.from $51

Flights to Bostonfrom $76

Flights to Atlantafrom $49

Flights to Dallasfrom $56

Flights to Seattlefrom $80

Cheap flights from Ohio 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 Ohio to Illinois departing on 4/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Ohio to Illinois

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

United Airlines flights from Ohio to Illinois

Our best United Airlines deals on Ohio to Illinois flight tickets

Frontier flights from Ohio to Illinois

Our best Frontier deals on Ohio to Illinois flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Ohio to Illinois that are best for you.

See travel insights to Illinois from

How to get the cheapest flight ticket from Ohio to Illinois

What is the cheapest month to fly to Illinois?

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

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

What is the cheapest Ohio to Illinois flight route?

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

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

Can stopping save me money on Ohio to Illinois flights?

What is the cheapest airline that flies from Ohio to Illinois?

What airlines fly to Illinois?

How many flights depart from Ohio to Illinois on average per day?

How many flights depart from Ohio to Illinois on average per week?

How long is the flight from Ohio to Illinois?

Cheap Ohio to Illinois flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

Best airlines flying from Ohio to Illinois

Compare and see reviews for airlines that fly from Ohio to Illinois with momondo

Why use momondo?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo

Ohio flight routes

According to popular flight searches on momondo this year

Illinois flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Illinois

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Complete your trip to Illinois

Explore popular destinations other users love

According to popular flight searches on momondo this year