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$164+ Cheap flights from Columbia, MO (COU) 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
COU — ORD
Jul 10 — Jul 171
Fri 7/10
Fri 7/17
1 adult, Economy
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Cheap 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 June 10, 2026.

This United Airlines deal was found by Cheapflights users on 6/9. 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 8/110:49 am
COU
-
ORD
Nonstop1h 41m
United Airlines
Wed 8/58:40 am
ORD
-
COU
Nonstop1h 33m
United Airlines
Deal found 6/9$239
This American Airlines deal was found by Cheapflights users on 6/5. 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 7/36:20 am
COU
-
ORD
Nonstop1h 41m
American Airlines
Sun 7/57:29 pm
ORD
-
COU
Nonstop1h 32m
American Airlines
Deal found 6/5$243
This American Airlines deal was found by Cheapflights users on 6/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:32 pm
COU
-
ORD
Nonstop1h 51m
American Airlines
Thu 7/308:29 am
ORD
-
COU
Nonstop1h 32m
American Airlines
Deal found 6/8$246
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Thu 9/310:55 am
COU
-
ORD
Nonstop1h 43m
United Airlines
Sun 9/69:20 pm
ORD
-
COU
Nonstop1h 35m
United Airlines
Deal found 6/8$248
This American Airlines deal was found by Cheapflights users on 6/9. 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 7/106:32 pm
COU
-
ORD
Nonstop1h 51m
American Airlines
Sun 7/128:29 am
ORD
-
COU
Nonstop1h 32m
American Airlines
Deal found 6/9$249
This American Airlines deal was found by Cheapflights users on 6/5. 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 9/185:43 am
COU
-
ORD
Nonstop1h 46m
American Airlines
Sun 9/207:39 pm
ORD
-
COU
Nonstop1h 33m
American Airlines
Deal found 6/5$254
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Sat 9/196:15 am
COU
-
ORD
Nonstop1h 39m
United Airlines
Sun 9/209:00 pm
ORD
-
COU
Nonstop1h 35m
United Airlines
Deal found 6/8$259
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Thu 6/258:00 am
COU
-
ORD
Nonstop1h 40m
United Airlines
Sat 6/2710:00 pm
ORD
-
COU
Nonstop1h 33m
United Airlines
Deal found 6/6$264
This United Airlines deal was found by Cheapflights users on 6/5. 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 6/198:00 am
COU
-
ORD
Nonstop1h 40m
United Airlines
Sun 6/218:40 am
ORD
-
COU
Nonstop1h 33m
United Airlines
Deal found 6/5$269
This American Airlines deal was found by Cheapflights users on 6/9. 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 6/266:47 pm
COU
-
ORD
Nonstop1h 47m
American Airlines
Sun 6/288:30 am
ORD
-
COU
Nonstop1h 36m
American Airlines
Deal found 6/9$279
This United Airlines deal was found by Cheapflights users on 6/5. 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 9/46:15 am
COU
-
ORD
Nonstop1h 39m
United Airlines
Sun 9/68:40 am
ORD
-
COU
Nonstop1h 36m
United Airlines
Deal found 6/5$284
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/21:04 pm
COU
-
STL
2 stops44h 36m
Multiple Airlines
Thu 10/88:34 pm
STL
-
COU
1 stop17h 47m
Multiple Airlines
Deal found 6/6$388

Find flight deals from Columbia to Illinois

Keep the following information in mind while searching for Columbia to Illinois flight deals. Data was last updated June 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$239
(United Airlines)

One-way from

$164
(American Airlines)

Popular in

July

Cheapest in

January

Average price

$264

Good round-trip deal

$379 or less

Good one-way deal

$262 or less
Provider with most accurate pricing for Columbia Regional-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Columbia Regional-Chicago (CHI) flights.
Search Deals
From Columbia Regional to Illinois
Search Deals
One-way flight from Columbia Regional to Illinois
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Columbia Regional to Illinois.
Search Deals
Price to beat on a one-way flight from Columbia Regional to Illinois.
Search Deals

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 June 10, 2026.
Use the filters below to find and compare flights from Columbia to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Wed 8/19

10:55 am-12:38 pm

Nonstop1h 43m

Chicago O'Hare Intl

Sat 8/22

9:20 pm-10:55 pm

Nonstop1h 35m

$239

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Wed 7/8

10:49 am-12:30 pm

Nonstop1h 41m

Chicago O'Hare Intl

Sun 7/12

8:40 am-10:13 am

Nonstop1h 33m

$249

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Sat 10/17

11:19 am-1:00 pm

Nonstop1h 41m

Chicago O'Hare Intl

Wed 10/21

1:00 pm-2:38 pm

Nonstop1h 38m

$249

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 8/20

6:15 am-7:54 am

Nonstop1h 39m

Chicago O'Hare Intl

Thu 8/27

9:20 pm-10:55 pm

Nonstop1h 35m

$309
Quickest round-trip

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Mon 7/27

8:00 am-9:40 am

Nonstop1h 40m

Chicago O'Hare Intl

Sat 8/1

10:00 pm-11:33 pm

Nonstop1h 33m

$309

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Wed 8/19

3:12 pm-5:00 pm

Nonstop1h 48m

Chicago O'Hare Intl

Tue 8/25

12:50 pm-2:30 pm

Nonstop1h 40m

$309

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 7/16

8:00 am-9:40 am

Nonstop1h 40m

Chicago O'Hare Intl

Tue 7/21

10:00 pm-11:33 pm

Nonstop1h 33m

$319

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Tue 7/14

8:00 am-9:40 am

Nonstop1h 40m

Chicago O'Hare Intl

Mon 7/20

10:00 pm-11:33 pm

Nonstop1h 33m

$319

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Sun 7/12

8:00 am-9:40 am

Nonstop1h 40m

Chicago O'Hare Intl

Sat 7/18

10:00 pm-11:33 pm

Nonstop1h 33m

$319

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Mon 7/13

10:49 am-12:30 pm

Nonstop1h 41m

Chicago O'Hare Intl

Sat 7/18

1:15 pm-2:50 pm

Nonstop1h 35m

$319

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 38 resultsSorted by cheapest first
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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, November is the cheapest month in which you can book a flight from Columbia, Missouri to Illinois (average of $99). Flying from Columbia, Missouri to Illinois in July is currently the most expensive (average of $238). 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 June 10, 2026.

It’s typically best to fly out from Columbia, Missouri to Illinois in the evening. Doing so could potentially save you 13% on the flight price compared to flying at noon, which is usually more expensive.

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 June 10, 2026.

The most flights from COU to USIL are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 on average).

How much does it cost to fly round-trip from Columbia, Missouri to Illinois?

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 June 8, 2026.

Travelers seeking maximum savings on their Columbia, Missouri to Illinois flight should consider departing on Thursday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 June 10, 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
9,804 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

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
9,804 reviews
United Airlines
7.4
Good
9,804 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

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
7.1
Good
11,635 reviews
United Airlines
7.4
Good
9,804 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

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 43m. Your travel time can differ by up to 40h 36m. 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 (79%), American Airlines (74%) or Envoy Air (74%) 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 $163. While the most popular route (Columbia Regional - Chicago O'Hare Intl) can be booked for $239 on average, our data indicates $404 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, November is the cheapest month in which you can book a flight from Columbia, Missouri to Illinois (average of $99). Flying from Columbia, Missouri to Illinois in July is currently the most expensive (average of $238). 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 June 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$294FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$298FlexibilityNo cancel feeOn-time71%

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