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$163+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
COU — ORD
May 22 — May 291
Fri 5/22
Fri 5/29
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 April 22, 2026.

This American Airlines deal was found by Cheapflights users on 4/20. 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.
Thu 5/144:28 pm
COU
-
ORD
Nonstop1h 42m
American Airlines
Sun 5/178:12 am
ORD
-
COU
Nonstop1h 31m
American Airlines
Deal found 4/20$238
This American Airlines deal was found by Cheapflights users on 4/17. 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 5/226:32 pm
COU
-
ORD
Nonstop1h 50m
American Airlines
Tue 5/267:52 pm
ORD
-
COU
Nonstop1h 37m
American Airlines
Deal found 4/17$239
This United Airlines deal was found by Cheapflights users on 4/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/411:23 am
COU
-
ORD
Nonstop1h 42m
United Airlines
Sun 7/511:00 pm
ORD
-
COU
Nonstop1h 33m
United Airlines
Deal found 4/17$249
This American Airlines deal was found by Cheapflights users on 4/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/56:00 am
COU
-
ORD
Nonstop1h 38m
American Airlines
Fri 6/127:54 pm
ORD
-
COU
Nonstop1h 34m
American Airlines
Deal found 4/21$253
This American Airlines deal was found by Cheapflights users on 4/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/256:00 am
COU
-
ORD
Nonstop1h 38m
American Airlines
Sun 6/288:20 am
ORD
-
COU
Nonstop1h 36m
American Airlines
Deal found 4/21$254
This American Airlines deal was found by Cheapflights users on 4/17. 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.
Wed 8/265:17 pm
COU
-
ORD
1 stop5h 53m
American Airlines
Sat 8/294:48 pm
ORD
-
COU
1 stop5h 52m
American Airlines
Deal found 4/17$258
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Wed 5/68:00 am
COU
-
ORD
Nonstop1h 30m
United Airlines
Sun 5/109:15 am
ORD
-
COU
Nonstop1h 42m
United Airlines
Deal found 4/21$269
This American Airlines deal was found by Cheapflights users on 4/20. 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.
Mon 5/184:28 pm
COU
-
STL
1 stop29h 51m
American Airlines
Mon 5/252:36 pm
STL
-
COU
1 stop19h 24m
American Airlines
Deal found 4/20$524
This American Airlines deal was found by Cheapflights users on 4/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/216:32 pm
COU
-
STL
1 stop38h 00m
American Airlines
Sun 5/247:50 pm
STL
-
COU
1 stop22h 12m
American Airlines
Deal found 4/21$525
This United Airlines deal was found by Cheapflights users on 4/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/143:05 pm
COU
-
STL
1 stop21h 44m
United Airlines
Tue 8/185:00 am
STL
-
COU
1 stop9h 30m
United Airlines
Deal found 4/17$599
This American Airlines deal was found by Cheapflights users on 4/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:16 am
COU
-
STL
1 stop13h 30m
American Airlines
Sat 5/98:03 pm
STL
-
COU
1 stop19h 55m
American Airlines
Deal found 4/19$681
This American Airlines deal was found by Cheapflights users on 4/17. 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.
Sat 5/210:16 am
COU
-
STL
1 stop9h 53m
American Airlines
Wed 5/65:21 pm
STL
-
COU
1 stop16h 25m
American Airlines
Deal found 4/17$696

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 April 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$238
(American Airlines)

One-way from

$163
(American Airlines)

Popular in

July

Cheapest in

January

Average price

$380

Good round-trip deal

$372 or less

Good one-way deal

$291 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. 22% potential increase in price ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 22, 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 5/22

6:32 pm-8:22 pm

Nonstop1h 50m

Chicago O'Hare Intl

Sat 6/6

8:20 am-9:56 am

Nonstop1h 36m

$239

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Fri 6/19

5:00 am-6:41 am

Nonstop1h 41m

Chicago O'Hare Intl

Sat 6/20

9:15 am-10:48 am

Nonstop1h 33m

$239

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Fri 5/22

6:32 pm-8:22 pm

Nonstop1h 50m

Chicago O'Hare Intl

Tue 5/26

7:52 pm-9:29 pm

Nonstop1h 37m

$239

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Sun 9/6

3:05 pm-4:48 pm

Nonstop1h 43m

Chicago O'Hare Intl

Sun 9/13

9:16 am-10:55 am

Nonstop1h 39m

$239

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 5/28

3:25 pm-5:05 pm

Nonstop1h 40m

Chicago O'Hare Intl

Sat 5/30

8:45 am-10:18 am

Nonstop1h 33m

$239

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 7/30

5:00 am-6:41 am

Nonstop1h 41m

Chicago O'Hare Intl

Sat 8/1

8:08 pm-9:59 pm

Nonstop1h 51m

$239

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Wed 7/22

5:00 am-6:41 am

Nonstop1h 41m

Chicago O'Hare Intl

Sat 7/25

12:55 pm-2:30 pm

Nonstop1h 35m

$239

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Wed 7/29

7:16 am-2:20 pm

1 stop7h 04m

Chicago O'Hare Intl

Sat 8/1

8:17 am-9:52 am

Nonstop1h 35m

$248

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Thu 6/4

5:00 am-6:41 am

Nonstop1h 41m

Chicago O'Hare Intl

Sun 6/7

10:57 pm-12:30 am

Nonstop1h 33m

$254
Quickest round-trip

ColumbiaChicago

COU - ORD

COUORD

Columbia Regional

Wed 5/6

10:16 am-11:47 am

Nonstop1h 31m

Chicago O'Hare Intl

Sun 5/10

7:55 pm-9:29 pm

Nonstop1h 34m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/20

Showing 1-10 of 27 resultsSorted by cheapest first
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, 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 April 22, 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 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 April 18, 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. 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 April 22, 2026.

The most flights from COU to USIL are scheduled on a Monday (11 on average). You will have fewer flight options on Wednesday, 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?

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 April 22, 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
9,624 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

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
9,624 reviews
United Airlines
7.4
Good
9,624 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

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
11,647 reviews
United Airlines
7.4
Good
9,624 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

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 41m. 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 (93%), American Airlines (75%) or Envoy Air (75%) 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 $182. While the most popular route (Columbia Regional - Chicago O'Hare Intl) can be booked for $239 on average, our data indicates $405 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 April 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$294FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$292FlexibilityNo cancel feeOn-time71%

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