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$173+ Cheap flights from Columbia, MO (COU) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/28. Fares are subject to change and may not be available on all flights or dates of travel.
COU — ORD
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
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Cheap flight deals from Columbia to Illinois

Keep the following information in mind while searching for Columbia to Illinois flight deals. Data was last updated November 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$173
(United Airlines)

Popular in

July

Cheapest in

October

Average price

$299

Good round-trip deal

$308 or less

Good one-way deal

$253 or less
Provider with most accurate pricing for Columbia Regional-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Columbia Regional-Chicago (CHI) flights.
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From Columbia Regional to Illinois
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Highest demand for flights based on searches. 5% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($16 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 Columbia Regional to Illinois.
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Price to beat on a one-way flight from Columbia Regional to Illinois.
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Find flight deals from Columbia to Illinois

Cheapest flights from Columbia to Illinois
Explore the most affordable flight options available from Columbia to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2025.

This United Airlines deal was found by Cheapflights users on 11/4. 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.
Fri 11/288:00 amCOU - ORD
Nonstop1h 37mUnited Airlines
Fri 11/2812:45 pmORD - COU
Nonstop1h 41mUnited Airlines
Deal found 11/4$173
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Sat 12/63:25 pmCOU - ORD
Nonstop1h 37mUnited Airlines
Sun 12/144:04 pmORD - COU
Nonstop1h 36mUnited Airlines
Deal found 11/4$179
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Sun 11/2312:28 pmCOU - ORD
Nonstop1h 39mAmerican Airlines
Wed 12/39:50 amORD - COU
Nonstop1h 39mAmerican Airlines
Deal found 11/4$194
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/188:00 amCOU - ORD
Nonstop1h 37mUnited Airlines
Sat 11/227:40 pmORD - COU
Nonstop1h 39mUnited Airlines
Deal found 11/3$209
This American Airlines deal was found by Cheapflights users on 11/4. 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 11/252:05 pmCOU - ORD
Nonstop1h 37mAmerican Airlines
Sat 11/298:23 pmORD - COU
Nonstop1h 32mAmerican Airlines
Deal found 11/4$224
This American Airlines deal was found by Cheapflights users on 11/4. 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 12/612:06 pmCOU - ORD
1 stop7h 29mAmerican Airlines
Sun 12/148:25 pmORD - COU
Nonstop1h 35mAmerican Airlines
Deal found 11/4$229
This American Airlines deal was found by Cheapflights users on 11/4. 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 11/227:06 pmCOU - ORD
Nonstop1h 47mAmerican Airlines
Sat 11/298:23 pmORD - COU
Nonstop1h 32mAmerican Airlines
Deal found 11/4$239
This United Airlines deal was found by Cheapflights users on 11/3. 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 12/293:10 pmCOU - ORD
Nonstop1h 36mUnited Airlines
Wed 12/313:50 pmORD - COU
Nonstop1h 35mUnited Airlines
Deal found 11/3$247
This American Airlines deal was found by Cheapflights users on 11/3. 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 11/186:17 pmCOU - ORD
1 stop5h 20mAmerican Airlines
Sat 11/228:23 pmORD - COU
Nonstop1h 32mAmerican Airlines
Deal found 11/3$249
This American Airlines deal was found by Cheapflights users on 11/3. 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 12/296:05 pmCOU - ORD
1 stop5h 10mAmerican Airlines
Wed 12/315:47 pmORD - COU
Nonstop1h 25mAmerican Airlines
Deal found 11/3$257
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Sat 12/139:00 amCOU - ORD
2 stops28h 10mUnited Airlines
Sun 12/144:04 pmORD - COU
Nonstop1h 36mUnited Airlines
Deal found 11/4$268
This American Airlines deal was found by Cheapflights users on 11/2. 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 12/212:28 pmCOU - STL
1 stop24h 16mAmerican Airlines
Tue 12/94:07 pmSTL - COU
1 stop23h 05mAmerican Airlines
Deal found 11/2$285

Cheapflights Fare Finder

 
Customize your flight search to find flights from Columbia 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 5, 2025.
Use the filters below to find and compare flights from Columbia to Illinois that are best for you.

Fly from

Columbia

Fly to

Illinois

Route

Depart

Return

Price

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Fri 11/28

8:00 am-9:37 am

Nonstop1h 37m

Chicago O'Hare Intl

Fri 11/28

12:45 pm-2:26 pm

Nonstop1h 41m

$173

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Sat 12/6

1:55 pm-3:26 pm

Nonstop1h 31m

Chicago O'Hare Intl

Sun 12/7

8:25 pm-10:00 pm

Nonstop1h 35m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Fri 1/30

8:09 am-9:55 am

Nonstop1h 46m

Chicago O'Hare Intl

Mon 2/2

7:58 pm-9:37 pm

Nonstop1h 39m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Fri 1/16

6:00 am-7:36 am

Nonstop1h 36m

Chicago O'Hare Intl

Wed 1/21

1:17 pm-2:48 pm

Nonstop1h 31m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Sat 12/27

6:34 pm-8:10 pm

Nonstop1h 36m

Chicago O'Hare Intl

Mon 12/29

1:00 pm-2:35 pm

Nonstop1h 35m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Sat 12/6

3:25 pm-5:02 pm

Nonstop1h 37m

Chicago O'Hare Intl

Sun 12/14

4:04 pm-5:40 pm

Nonstop1h 36m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Sat 12/13

3:25 pm-5:02 pm

Nonstop1h 37m

Chicago O'Hare Intl

Sun 12/14

4:04 pm-5:40 pm

Nonstop1h 36m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Sat 12/6

3:25 pm-5:02 pm

Nonstop1h 37m

Chicago O'Hare Intl

Sun 12/7

4:04 pm-5:40 pm

Nonstop1h 36m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Fri 12/5

3:05 pm-4:42 pm

Nonstop1h 37m

Chicago O'Hare Intl

Sun 12/7

4:04 pm-5:40 pm

Nonstop1h 36m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Tue 12/2

8:00 am-9:37 am

Nonstop1h 37m

Chicago O'Hare Intl

Tue 12/9

7:43 pm-9:22 pm

Nonstop1h 39m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 25 results
1
2
3

Best time to book a flight from Columbia to Illinois

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

What is the cheapest month to book a flight from Columbia, Missouri to Illinois?

Currently, February is the cheapest month in which you can book a flight from Columbia, Missouri to Illinois (average of $119). Flying from Columbia, Missouri to Illinois in January is currently the most expensive (average of $198). 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 COU to IL?

Find hourly flight availability from Columbia 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 5, 2025.

It’s typically best to fly out from Columbia, Missouri to Illinois in the morning. Doing so could potentially save you 27% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Columbia, Missouri to Illinois?

Use this chart to determine the cheapest time to fly round-trip from Columbia to Illinois. Price data was last updated on November 3, 2024.

Travelers seeking maximum savings on their Columbia, Missouri to Illinois flight should consider departing on Friday 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 Columbia, Missouri to Illinois

Explore weekly flight availability from Columbia 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 5, 2025.

The most flights from COU to USIL are scheduled on a Monday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 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 5, 2025.
Read reviews from past customers who have flown United Airlines and American Airlines from Columbia to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,002 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,002 reviews
United Airlines
7.4
Good
9,002 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
American Airlines
7.2
Good
11,042 reviews
United Airlines
7.4
Good
9,002 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

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

  • What airport do you fly from for flights from Columbia to Illinois?

    Most people fly from Columbia Regional (COU) if they book a flight from Columbia to Illinois. Columbia Regional is conveniently located just 11.1 mi from Columbia’s city center.

  • How long is the flight from Columbia, Missouri to Illinois?

    United Airlines and American Airlines can get you from Columbia, Missouri to Illinois in just under 1h 37m. Your travel time can differ by up to 16h 55m. Airlines will cover a distance of 315 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most reliable airlines from Columbia, Missouri to Illinois?

    Consider Qatar Airways (94%), SkyWest Airlines (81%) or United Airlines (81%) when booking your flight. These represent the most reliable airlines when flying from Columbia, Missouri to Illinois.

  • What are the cheapest flights from Columbia, Missouri to Illinois?

    Looking at all options, your cheapest flight can be booked for $184. While the most popular route (Columbia Regional - Chicago O'Hare Intl) can be booked for $173 on average, our data indicates $395 when flying from Columbia, Missouri to Illinois.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Columbia 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 Columbia, Missouri to Illinois?

    Currently, February is the cheapest month in which you can book a flight from Columbia, Missouri to Illinois (average of $119). Flying from Columbia, Missouri to Illinois in January is currently the most expensive (average of $198). 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.

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Alternative routes for Columbia to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Columbia to Illinois

Discover the top 2 airlines that operate flights from Columbia 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 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$294FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$199Average$322FlexibilityNo cancel feeOn-time71%

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