Missouri

$82+ Cheap flights from Illinois to Missouri

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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — STL
Dec 23 — Dec 301
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Cheap flight deals from Illinois to Missouri

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Missouri (USMO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2024.

Round-trip from

$94
(Mytrip)

One-way from

$82
(Mytrip)
From Illinois to Missouri
One-way flight from Illinois to Missouri

Find flight deals from Illinois to Missouri

Cheapest flights from Illinois to Missouri
Explore the most affordable flight options available from Illinois to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This oojo deal was found by Cheapflights users on 12/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/318:20 pmORD - STL
1 stop15h 25mSouthern / Mokulele
Tue 1/712:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 12/18$165
This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2111:25 amORD - CGI
Nonstop1h 35mContour
Wed 12/253:45 pmCGI - ORD
Nonstop1h 40mContour
Deal found 12/16$198
This Delta deal was found by Cheapflights users on 12/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/315:50 pmORD - STL
1 stop4h 16mDelta
Tue 1/76:00 amSTL - ORD
2 stops6h 55mDelta
Deal found 12/18$226
This Southwest deal was found by Cheapflights users on 12/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/257:15 amMDW - STL
Nonstop1h 20mSouthwest
Wed 12/2510:40 amSTL - MDW
Nonstop1h 10mSouthwest
Deal found 12/18$243
This Frontier deal was found by Cheapflights users on 12/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:00 amORD - MCI
1 stop7h 38mFrontier
Wed 1/12:28 pmMCI - ORD
1 stop9h 18mFrontier
Deal found 12/17$258
This Southwest deal was found by Cheapflights users on 12/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/248:45 pmMDW - MCI
Nonstop1h 30mSouthwest
Wed 12/259:10 amMCI - MDW
Nonstop1h 25mSouthwest
Deal found 12/18$260
This Delta deal was found by Cheapflights users on 12/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/245:51 pmMDW - MCI
1 stop4h 06mDelta
Wed 12/2510:23 amMCI - MDW
1 stop5h 47mDelta
Deal found 12/18$278
This Mytrip deal was found by Cheapflights users on 12/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2412:30 pmORD - STL
1 stop20h 20mMultiple Airlines
Tue 1/74:27 pmSTL - ORD
3 stops26h 52mMultiple Airlines
Deal found 12/18$280
This Southwest deal was found by Cheapflights users on 12/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/243:10 pmORD - STL
1 stop5h 35mSouthwest
Wed 12/2511:05 amSTL - ORD
2 stops7h 05mSouthwest
Deal found 12/17$301
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/318:42 pmORD - STL
Nonstop1h 37mAmerican Airlines
Thu 1/26:23 pmSTL - ORD
Nonstop1h 27mAmerican Airlines
Deal found 12/17$304
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Mon 12/307:55 pmORD - MCI
Nonstop1h 50mAmerican Airlines
Wed 1/17:03 amMCI - ORD
Nonstop2h 01mAmerican Airlines
Deal found 12/17$321
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/245:30 pmORD - MCI
1 stop4h 27mDelta
Wed 1/110:43 amMCI - ORD
1 stop6h 26mDelta
Deal found 12/17$378

Find flights from Illinois to Missouri within your budget

Customize your flight search to find flights from Illinois to Missouri 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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoCape Girardeau

ORD - CGI

ORDCGI

Chicago O'Hare Intl

Thu 1/9

5:00 pm-6:35 pm

Nonstop1h 35m

Cape Girardeau

Mon 1/27

3:45 pm-5:25 pm

Nonstop1h 40m

$94

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Fri 1/31

8:20 pm-11:45 am

1 stop15h 25m

Lambert-St Louis

Fri 2/7

12:15 pm-7:40 am

1 stop19h 25m

$97

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Fri 2/21

12:33 pm-11:43 pm

1 stop11h 10m

Lambert-St Louis

Mon 2/24

5:20 pm-3:12 pm

1 stop21h 52m

$128

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 1/22

6:25 pm-8:02 pm

Nonstop1h 37m

Lambert-St Louis

Wed 1/29

11:30 am-1:04 pm

Nonstop1h 34m

$137

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 1/16

12:35 pm-1:45 pm

Nonstop1h 10m

Lambert-St Louis

Thu 1/16

5:00 pm-6:10 pm

Nonstop1h 10m

$163

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 1/16

3:00 pm-4:20 pm

Nonstop1h 20m

Lambert-St Louis

Thu 1/23

5:40 am-7:08 am

Nonstop1h 28m

$167

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Wed 1/15

5:07 pm-11:37 pm

1 stop6h 30m

Lambert-St Louis

Wed 1/22

7:15 am-11:59 am

1 stop4h 44m

$176

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Mon 1/13

4:58 pm-11:14 pm

2 stops6h 16m

Lambert-St Louis

Wed 1/15

2:00 pm-6:49 pm

1 stop4h 49m

$184

ChicagoColumbia

ORD - COU

ORDCOU

Chicago O'Hare Intl

Tue 1/14

6:30 am-4:32 pm

1 stop10h 02m

Columbia Regional

Tue 1/14

6:11 pm-7:40 pm

Nonstop1h 29m

$188

ChicagoKansas City

MDW - MCI

MDWMCI

Chicago Midway

Wed 1/15

2:00 pm-3:30 pm

Nonstop1h 30m

Kansas City

Wed 1/22

2:55 pm-7:25 pm

1 stop4h 30m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Missouri

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

Travel insights for flights from Illinois to Missouri

Get recent, data-driven insights about flights from Illinois to Missouri including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Illinois to Missouri (average of $311). Flying from Illinois to Missouri in March is currently the most expensive (average of $356). 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 IL to MO?

Find hourly flight availability from Illinois to Missouri. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Missouri as you normally would.

Rainfall in Missouri by month

Plan your trip to Missouri by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Missouri ranges from 1.1 - 5.2 inches per month. May is typically the wettest month, when rainfall can reach 5.2 in. January is typically the driest time to visit Missouri when rainfall is around 1.1 in.

Temperature in Missouri by month

Plan your trip to Missouri by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Missouri, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing Missouri

Get insights into the airlines that provide service to Missouri. 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 Missouri. Reviews last updated December 18, 2024.
Get a feel of what it's like to fly with Southwest, Southern / Mokulele and Frontier from Illinois to Missouri by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
4,848 reviews

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.1
Very good
4,848 reviews
8.1
Very good
4,848 reviews

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
9,552 reviews
8.1
Very good
4,848 reviews

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
8,604 reviews
8.1
Very good
4,848 reviews

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
9,059 reviews
8.1
Very good
4,848 reviews

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.2
Good
10,000 reviews
8.1
Very good
4,848 reviews

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines to fly from Illinois to Missouri one-way?

    The cheapest airline one-way is Contour, with whom users have recently found tickets for as low as $82. However, be on the lookout for offers from Southwest and United Airlines, as they are both options that can get you from Illinois to Missouri for a low price.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Illinois to Missouri (average of $311). Flying from Illinois to Missouri in March is currently the most expensive (average of $356). 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 Illinois to Missouri

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Illinois to Missouri

Discover the top 5 airlines that operate flights from Illinois to Missouri. 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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
ContourCheapest$88Average$124FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$108Average$305FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$115Average$319FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$138Average$353FlexibilityNo cancel feeOn-time63%
Southern / MokuleleCheapest$143Average$179FlexibilityNo cancel feeOn-timeN/A
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