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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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
COU — ORD
Aug 20 — Aug 271
Thu 8/20
Thu 8/27
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 July 21, 2026.

This United Airlines deal was found by Cheapflights users on 7/20. 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 8/286:15 am
COU
-
ORD
Nonstop1h 39m
United Airlines
Mon 8/319:20 pm
ORD
-
COU
Nonstop1h 35m
United Airlines
Deal found 7/20$217
This American Airlines deal was found by Cheapflights users on 7/20. 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.
Wed 8/266:00 am
COU
-
ORD
Nonstop1h 41m
American Airlines
Sat 8/2911:00 am
ORD
-
COU
Nonstop1h 28m
American Airlines
Deal found 7/20$228
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Sun 8/93:25 pm
COU
-
ORD
Nonstop1h 40m
United Airlines
Sat 8/158:40 am
ORD
-
COU
Nonstop1h 34m
United Airlines
Deal found 7/21$230
This United Airlines deal was found by Cheapflights users on 7/16. 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 8/146:15 am
COU
-
ORD
Nonstop1h 39m
United Airlines
Sun 8/168:40 am
ORD
-
COU
Nonstop1h 34m
United Airlines
Deal found 7/16$239
This American Airlines deal was found by Cheapflights users on 7/20. 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.
Wed 8/56:00 am
COU
-
ORD
Nonstop1h 41m
American Airlines
Mon 8/107:49 pm
ORD
-
COU
Nonstop1h 30m
American Airlines
Deal found 7/20$241
This United Airlines deal was found by Cheapflights users on 7/20. 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.
Wed 8/126:15 am
COU
-
ORD
Nonstop1h 39m
United Airlines
Sun 8/168:40 am
ORD
-
COU
Nonstop1h 34m
United Airlines
Deal found 7/20$251
This United Airlines deal was found by Cheapflights users on 7/18. 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.
Wed 8/58:00 am
COU
-
ORD
Nonstop1h 40m
United Airlines
Sun 8/98:40 am
ORD
-
COU
Nonstop1h 33m
United Airlines
Deal found 7/18$254
This American Airlines deal was found by Cheapflights users on 7/17. 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 8/76:00 am
COU
-
ORD
Nonstop1h 41m
American Airlines
Mon 8/107:49 pm
ORD
-
COU
Nonstop1h 30m
American Airlines
Deal found 7/17$255
This United Airlines deal was found by Cheapflights users on 7/19. 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 10/166:15 am
COU
-
ORD
Nonstop1h 38m
United Airlines
Sun 10/189:00 am
ORD
-
COU
Nonstop1h 39m
United Airlines
Deal found 7/19$256
This United Airlines deal was found by Cheapflights users on 7/19. 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 10/236:15 am
COU
-
ORD
Nonstop1h 38m
United Airlines
Sun 10/259:04 am
ORD
-
COU
Nonstop1h 40m
United Airlines
Deal found 7/19$259
This American Airlines deal was found by Cheapflights users on 7/16. 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 7/306:32 pm
COU
-
ORD
Nonstop1h 51m
American Airlines
Sun 8/28:29 am
ORD
-
COU
Nonstop1h 32m
American Airlines
Deal found 7/16$269
This American Airlines deal was found by Cheapflights users on 7/17. 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 8/76:35 pm
COU
-
STL
1 stop13h 49m
American Airlines
Thu 8/138:07 pm
STL
-
COU
1 stop40h 21m
American Airlines
Deal found 7/17$422

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 July 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$217
(United Airlines)

One-way from

$164
(American Airlines)

Popular in

April

Cheapest in

January

Average price

$268

Good round-trip deal

$325 or less

Good one-way deal

$298 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. 2% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 21, 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

Fri 10/9

11:15 am-12:58 pm

Nonstop1h 43m

Chicago O'Hare Intl

Sun 10/11

9:00 am-10:39 am

Nonstop1h 39m

$239
Quickest round-trip

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 8/13

6:15 am-7:54 am

Nonstop1h 39m

Chicago O'Hare Intl

Thu 8/20

9:20 pm-10:55 pm

Nonstop1h 35m

$239

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 8/27

10:55 am-12:38 pm

Nonstop1h 43m

Chicago O'Hare Intl

Fri 9/4

9:20 pm-10:55 pm

Nonstop1h 35m

$287

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Fri 8/28

6:15 am-7:54 am

Nonstop1h 39m

Chicago O'Hare Intl

Thu 9/3

12:50 pm-2:30 pm

Nonstop1h 40m

$287

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Sat 8/29

3:12 pm-5:00 pm

Nonstop1h 48m

Chicago O'Hare Intl

Wed 9/2

12:50 pm-2:30 pm

Nonstop1h 40m

$287

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Wed 7/29

10:49 am-12:30 pm

Nonstop1h 41m

Chicago O'Hare Intl

Sat 8/1

8:40 am-10:13 am

Nonstop1h 33m

$299

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 8/13

6:15 am-7:54 am

Nonstop1h 39m

Chicago O'Hare Intl

Sun 8/16

9:20 pm-10:55 pm

Nonstop1h 35m

$309

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 8/20

10:55 am-12:38 pm

Nonstop1h 43m

Chicago O'Hare Intl

Sun 8/23

8:40 am-10:16 am

Nonstop1h 36m

$309

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 8/20

6:15 am-7:54 am

Nonstop1h 39m

Chicago O'Hare Intl

Sat 8/22

9:20 pm-10:55 pm

Nonstop1h 35m

$309

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Wed 8/12

3:11 pm-4:59 pm

Nonstop1h 48m

Chicago O'Hare Intl

Fri 8/14

9:20 pm-10:55 pm

Nonstop1h 35m

$327

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/16

Showing 1-10 of 31 resultsSorted by cheapest first
1
2
3
4

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, October is the cheapest month in which you can book a flight from Columbia, Missouri to Illinois (average of $225). Flying from Columbia, Missouri to Illinois in April is currently the most expensive (average of $365). 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 July 21, 2026.

It’s typically best to fly out from Columbia, Missouri to Illinois in the afternoon. 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 July 21, 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 (5 on average).

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

How far ahead should I book a flight from Columbia, Missouri to Illinois?

The best time to book flights from Columbia, Missouri to Illinois is 80 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 July 18, 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. Saturday evenings 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 July 21, 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
10,011 reviews

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
10,011 reviews
United Airlines
7.4
Good
10,011 reviews

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.1
Good
11,832 reviews
United Airlines
7.4
Good
10,011 reviews

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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 36h. 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 GoJet (95%), Qatar Airways (83%) or American Airlines (79%) 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 $239 on average, our data indicates $508 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, October is the cheapest month in which you can book a flight from Columbia, Missouri to Illinois (average of $225). Flying from Columbia, Missouri to Illinois in April is currently the most expensive (average of $365). 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 Columbia to Illinois

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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 July 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$300FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$277FlexibilityNo cancel feeOn-time71%

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