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$51+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — STL
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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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 November 20, 2024.

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 November 20, 2024.

This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1211:25 amORD - CGI
Nonstop1h 35mContour
Mon 12/163:45 pmCGI - ORD
Nonstop1h 40mContour
Deal found 11/19$97
This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/128:20 pmORD - STL
1 stop23h 35mSouthern / Mokulele
Mon 12/165:00 pmSTL - ORD
1 stop14h 40mSouthern / Mokulele
Deal found 11/19$102
This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1711:24 amORD - STL
1 stop23h 20mMultiple Airlines
Fri 1/312:15 pmSTL - ORD
1 stop3h 35mMultiple Airlines
Deal found 11/19$119
This Southwest deal was found by Cheapflights users on 11/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/107:15 amMDW - STL
Nonstop1h 20mSouthwest
Tue 12/1010:40 amSTL - MDW
Nonstop1h 10mSouthwest
Deal found 11/19$133
This American Airlines deal was found by Cheapflights users on 11/20. 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.
Tue 12/103:05 pmORD - STL
Nonstop1h 16mAmerican Airlines
Wed 12/115:45 amSTL - ORD
Nonstop1h 27mAmerican Airlines
Deal found 11/20$137
This Frontier deal was found by Cheapflights users on 11/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/97:15 amMDW - MCI
1 stop10h 20mFrontier
Fri 12/136:25 pmMCI - MDW
1 stop5h 48mFrontier
Deal found 11/20$158
This CheapOair deal was found by Cheapflights users on 11/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/97:25 amORD - MCI
1 stop10h 10mFrontier
Mon 12/166:25 pmMCI - ORD
1 stop18h 24mFrontier
Deal found 11/19$158
This Flightnetwork deal was found by Cheapflights users on 11/19. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/137:00 amMDW - STL
1 stop16h 24mFrontier
Sun 12/158:34 pmSTL - MDW
1 stop15h 14mFrontier
Deal found 11/19$172
This United Airlines deal was found by Cheapflights users on 11/19. 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 12/138:05 pmORD - STL
Nonstop1h 31mUnited Airlines
Wed 12/1811:20 amSTL - ORD
Nonstop1h 27mUnited Airlines
Deal found 11/19$173
This Delta deal was found by Cheapflights users on 11/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/166:00 amMDW - STL
1 stop6h 03mDelta
Wed 12/1811:25 amSTL - MDW
1 stop5h 36mDelta
Deal found 11/19$176
This Delta deal was found by Cheapflights users on 11/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/107:05 amORD - STL
2 stops11h 24mDelta
Wed 12/1110:21 amSTL - ORD
1 stop4h 17mDelta
Deal found 11/20$181
This American Airlines deal was found by Cheapflights users on 11/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1110:40 amORD - SGF
Nonstop1h 44mAmerican Airlines
Wed 12/1812:15 pmSGF - ORD
Nonstop1h 50mAmerican Airlines
Deal found 11/18$189

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoCape Girardeau

ORD - CGI

ORDCGI

Chicago O'Hare Intl

Thu 12/12

11:25 am-1:00 pm

Nonstop1h 35m

Cape Girardeau

Mon 12/16

3:45 pm-5:25 pm

Nonstop1h 40m

$97

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 12/12

8:20 pm-7:55 pm

1 stop23h 35m

Lambert-St Louis

Mon 12/16

5:00 pm-7:40 am

1 stop14h 40m

$102

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 12/17

11:24 am-10:44 am

1 stop23h 20m

Lambert-St Louis

Fri 1/3

12:15 pm-3:50 pm

1 stop3h 35m

$119

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Tue 12/10

7:15 am-8:35 am

Nonstop1h 20m

Lambert-St Louis

Tue 12/10

10:40 am-11:50 am

Nonstop1h 10m

$133

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 1/21

2:10 pm-3:38 pm

Nonstop1h 28m

Lambert-St Louis

Wed 1/22

9:44 am-11:20 am

Nonstop1h 36m

$137

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 1/7

3:00 pm-4:20 pm

Nonstop1h 20m

Lambert-St Louis

Tue 1/14

5:40 am-7:08 am

Nonstop1h 28m

$138

ChicagoKansas City

MDW - MCI

MDWMCI

Chicago Midway

Mon 12/9

7:15 am-5:35 pm

1 stop10h 20m

Kansas City

Fri 12/13

6:25 pm-12:13 am

1 stop5h 48m

$158

St. LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 12/18

8:15 pm-9:25 pm

Nonstop1h 10m

Kansas City

Wed 12/25

7:05 am-8:15 am

Nonstop1h 10m

$158

ChicagoKansas City

ORD - MCI

ORDMCI

Chicago O'Hare Intl

Mon 12/9

7:25 am-5:35 pm

1 stop10h 10m

Kansas City

Mon 12/16

6:25 pm-12:49 pm

1 stop18h 24m

$158

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 12/12

9:35 am-11:24 pm

1 stop13h 49m

Lambert-St Louis

Sun 12/15

5:02 pm-9:54 am

1 stop16h 52m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

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, September is the cheapest month in which you can book a flight from Illinois to Missouri (average of $308). Flying from Illinois to Missouri in March is currently the most expensive (average of $357). 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 November 20, 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.

Weekly flight availability from Illinois to Missouri

Explore weekly flight availability from Illinois to Missouri. 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 November 20, 2024.

The most flights from USIL to USMO are scheduled on a Wednesday (55 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (31 on average).

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 November 20, 2024.
Get a feel of what it's like to fly with Southern / Mokulele, Southwest and American Airlines 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.
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Aeromexico
7.5
Good
2,004 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

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 $51. However, be on the lookout for offers from Frontier and Southern / Mokulele, 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, September is the cheapest month in which you can book a flight from Illinois to Missouri (average of $308). Flying from Illinois to Missouri in March is currently the most expensive (average of $357). 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 Illinois to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Illinois to Missouri

Discover the top 6 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
ContourCheapest$88Average$124FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$108Average$304FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$115Average$316FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$138Average$384FlexibilityNo cancel feeOn-time63%
Southern / MokuleleCheapest$143Average$178FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$156Average$507FlexibilityNo cancel feeOn-timeN/A
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