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$179+ 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 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
COU — ORD
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
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 January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$179
(United Airlines)

Popular in

July

Cheapest in

January

Average price

$179

Good round-trip deal

$331 or less

Good one-way deal

$331 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. 18% potential increase in price ($64 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 8, 2026.

This United Airlines deal was found by Cheapflights users on 1/6. 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 2/2011:15 amCOU - ORD
Nonstop1h 30mUnited Airlines
Sun 2/221:00 pmORD - COU
Nonstop1h 28mUnited Airlines
Deal found 1/6$179
This United Airlines deal was found by Cheapflights users on 1/8. 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 1/2311:17 amCOU - ORD
Nonstop1h 36mUnited Airlines
Tue 1/279:00 amORD - COU
Nonstop1h 42mUnited Airlines
Deal found 1/8$209
This American Airlines deal was found by Cheapflights users on 1/7. 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 4/274:29 pmCOU - ORD
Nonstop1h 39mAmerican Airlines
Sat 5/168:00 amORD - COU
Nonstop1h 31mAmerican Airlines
Deal found 1/7$224
This American Airlines deal was found by Cheapflights users on 1/7. 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.
Fri 2/136:35 pmCOU - ORD
Nonstop1h 35mAmerican Airlines
Tue 2/175:00 amORD - COU
1 stop6h 57mAmerican Airlines
Deal found 1/7$229
This American Airlines deal was found by Cheapflights users on 1/7. 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.
Fri 2/207:39 pmCOU - ORD
1 stop5h 16mAmerican Airlines
Sun 2/228:02 amORD - COU
Nonstop1h 28mAmerican Airlines
Deal found 1/7$234
This United Airlines deal was found by Cheapflights users on 1/6. 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 1/3011:17 amCOU - ORD
Nonstop1h 36mUnited Airlines
Sat 1/311:00 pmORD - COU
Nonstop1h 35mUnited Airlines
Deal found 1/6$239
This American Airlines deal was found by Cheapflights users on 1/6. 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.
Fri 1/236:00 amCOU - ORD
Nonstop1h 36mAmerican Airlines
Sun 1/256:54 amORD - COU
1 stop5h 25mAmerican Airlines
Deal found 1/6$249
This United Airlines deal was found by Cheapflights users on 1/6. 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 3/278:00 amCOU - ORD
Nonstop1h 30mUnited Airlines
Sun 3/299:15 amORD - COU
Nonstop1h 40mUnited Airlines
Deal found 1/6$254
This American Airlines deal was found by Cheapflights users on 1/7. 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.
Fri 3/276:30 pmCOU - ORD
Nonstop1h 35mAmerican Airlines
Sun 3/296:50 pmORD - COU
Nonstop1h 29mAmerican Airlines
Deal found 1/7$264
This American Airlines deal was found by Cheapflights users on 1/6. 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.
Fri 1/1611:56 amCOU - ORD
Nonstop1h 33mAmerican Airlines
Mon 1/197:40 pmORD - COU
Nonstop1h 30mAmerican Airlines
Deal found 1/6$269
This American Airlines deal was found by Cheapflights users on 1/7. 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 2/1412:33 pmCOU - ORD
1 stop8h 07mAmerican Airlines
Tue 2/175:00 amORD - COU
1 stop6h 57mAmerican Airlines
Deal found 1/7$278
This American Airlines deal was found by Cheapflights users on 1/6. 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 3/56:00 amCOU - STL
1 stop17h 48mAmerican Airlines
Sun 3/86:00 amSTL - COU
1 stop36h 00mAmerican Airlines
Deal found 1/6$417

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 January 8, 2026.
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 2/20

6:35 pm-8:10 pm

Nonstop1h 35m

Chicago O'Hare Intl

Sun 2/22

8:02 am-9:30 am

Nonstop1h 28m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Sat 2/14

3:10 pm-4:40 pm

Nonstop1h 30m

Chicago O'Hare Intl

Tue 2/17

1:00 pm-2:28 pm

Nonstop1h 28m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 2/5

3:10 pm-4:46 pm

Nonstop1h 36m

Chicago O'Hare Intl

Thu 2/12

9:00 am-10:33 am

Nonstop1h 33m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Fri 3/6

10:08 am-11:37 am

Nonstop1h 29m

Chicago O'Hare Intl

Mon 3/9

8:00 am-9:28 am

Nonstop1h 28m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 4/30

8:00 am-9:33 am

Nonstop1h 33m

Chicago O'Hare Intl

Sat 5/2

7:35 pm-9:10 pm

Nonstop1h 35m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 2/12

8:00 am-9:30 am

Nonstop1h 30m

Chicago O'Hare Intl

Mon 2/16

9:00 am-10:33 am

Nonstop1h 33m

$179

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 1/22

3:10 pm-4:46 pm

Nonstop1h 36m

Chicago O'Hare Intl

Mon 1/26

7:58 pm-9:37 pm

Nonstop1h 39m

$209

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Wed 1/21

3:10 pm-4:46 pm

Nonstop1h 36m

Chicago O'Hare Intl

Sat 1/24

1:00 pm-2:35 pm

Nonstop1h 35m

$209

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Sat 1/24

8:09 am-9:55 am

Nonstop1h 46m

Chicago O'Hare Intl

Mon 1/26

9:00 am-10:42 am

Nonstop1h 42m

$209

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Fri 1/23

11:17 am-12:53 pm

Nonstop1h 36m

Chicago O'Hare Intl

Tue 1/27

9:00 am-10:42 am

Nonstop1h 42m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 28 results
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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, December is the cheapest month in which you can book a flight from Columbia, Missouri to Illinois (average of $87). Flying from Columbia, Missouri to Illinois in January is currently the most expensive (average of $194). 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 January 8, 2026.

It’s typically best to fly out from Columbia, Missouri to Illinois in the evening. Doing so could potentially save you 15% on the flight price compared to flying in the afternoon, 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 January 3, 2026.

Travelers seeking maximum savings on their Columbia, Missouri to Illinois flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday at noon 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 January 8, 2026.

The most flights from COU to USIL are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, 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 January 8, 2026.
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
9,139 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

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
9,139 reviews
United Airlines
7.4
Good
9,139 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

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
11,095 reviews
United Airlines
7.4
Good
9,139 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

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?

    American Airlines and United Airlines can get you from Columbia, Missouri to Illinois in just under 1h 30m. Your travel time will be generally consistent. Airlines will cover a distance of 315 mi. Most flights are nonstop.

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

    Consider Qatar Airways (88%), Air New Zealand (67%) or American Airlines (54%) 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 $238. While the most popular route (Columbia Regional - Chicago O'Hare Intl) can be booked for $179 on average, our data indicates $433 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, December is the cheapest month in which you can book a flight from Columbia, Missouri to Illinois (average of $87). Flying from Columbia, Missouri to Illinois in January is currently the most expensive (average of $194). 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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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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$294FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$298FlexibilityNo cancel feeOn-time71%

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