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$50+ Cheap flights from Missouri 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ORD
nov. 26 — dic. 31
mar. 11/26
mar. 12/3
1 adult, Economy
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Cheap flight deals from Missouri to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Missouri (USMO) to Illinois (USIL). 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 noviembre 21, 2024.

Find flight deals from Missouri to Illinois

Cheapest flights from Missouri to Illinois
Explore the most affordable flight options available from Missouri to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 21, 2024.

This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/128:40 amCGI - ORD
Nonstop1h 40mContour
mié. 12/1811:25 amORD - CGI
Nonstop1h 35mContour
Deal found 11/20$100
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/1112:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
jue. 12/128:25 amORD - STL
1 stop11h 30mSouthern / Mokulele
Deal found 11/20$116
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/185:40 pmSTL - ORD
Nonstop1h 15mUnited Airlines
mié. 12/256:20 pmORD - STL
Nonstop1h 37mUnited Airlines
Deal found 11/20$137
This Frontier deal was found by Cheapflights users on 11/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/63:34 pmSTL - MDW
1 stop5h 28mFrontier
lun. 12/911:33 amMDW - STL
1 stop11h 51mFrontier
Deal found 11/21$138
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/116:30 amSTL - MDW
Nonstop1h 10mSouthwest
jue. 12/129:50 amMDW - STL
Nonstop1h 15mSouthwest
Deal found 11/20$143
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/155:45 amSTL - ORD
Nonstop1h 22mAmerican Airlines
mar. 12/3110:00 amORD - STL
Nonstop1h 32mAmerican Airlines
Deal found 11/19$143
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/187:05 amMCI - STL
Nonstop1h 10mSouthwest
mié. 12/258:15 pmSTL - MCI
Nonstop1h 10mSouthwest
Deal found 11/20$168
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/61:00 pmSTL - ORD
1 stop3h 32mMultiple Airlines
dom. 12/87:25 amORD - STL
1 stop24h 48mMultiple Airlines
Deal found 11/19$170
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.
jue. 12/196:04 amSTL - MDW
1 stop5h 04mDelta
mié. 12/254:50 pmMDW - STL
1 stop5h 16mDelta
Deal found 11/20$176
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/102:33 pmMCI - ORD
1 stop14h 57mSpirit Airlines
mié. 12/119:10 pmORD - MCI
1 stop16h 24mSpirit Airlines
Deal found 11/20$192
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.
mié. 12/115:20 amMCI - ORD
Nonstop1h 51mAmerican Airlines
mié. 12/118:46 pmORD - MCI
Nonstop1h 39mAmerican Airlines
Deal found 11/20$197
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/66:25 pmMCI - ORD
1 stop6h 10mMultiple Airlines
mar. 12/109:10 pmORD - MCI
1 stop16h 24mMultiple Airlines
Deal found 11/20$206

Find flights from Missouri to Illinois within your budget

Customize your flight search to find flights from Missouri 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 2,629,791 searches. Data last updated noviembre 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Cape GirardeauChicago

CGI - ORD

CGIORD

Cape Girardeau

jue. 12/12

8:40 am-10:20 am

Nonstop1h 40m

Chicago O'Hare Intl

mié. 12/18

11:25 am-1:00 pm

Nonstop1h 35m

$100

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

vie. 1/31

5:00 pm-7:40 am

1 stop14h 40m

Chicago O'Hare Intl

lun. 2/17

8:20 pm-11:45 am

1 stop15h 25m

$115

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

mié. 12/18

5:40 pm-6:55 pm

Nonstop1h 15m

Chicago O'Hare Intl

mié. 12/25

6:20 pm-7:57 pm

Nonstop1h 37m

$137

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

vie. 12/6

3:34 pm-9:02 pm

1 stop5h 28m

Chicago Midway

lun. 12/9

11:33 am-11:24 pm

1 stop11h 51m

$138

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

mié. 12/11

6:30 am-7:40 am

Nonstop1h 10m

Chicago Midway

jue. 12/12

9:50 am-11:05 am

Nonstop1h 15m

$143

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

dom. 12/15

5:45 am-7:07 am

Nonstop1h 22m

Chicago O'Hare Intl

mar. 12/31

10:00 am-11:32 am

Nonstop1h 32m

$143

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

mié. 12/18

7:05 am-8:15 am

Nonstop1h 10m

Lambert-St Louis

mié. 12/25

8:15 pm-9:25 pm

Nonstop1h 10m

$168

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

vie. 12/6

1:00 pm-4:32 pm

1 stop3h 32m

Chicago O'Hare Intl

dom. 12/8

7:25 am-8:13 am

1 stop24h 48m

$170

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

jue. 12/19

6:04 am-11:08 am

1 stop5h 04m

Chicago Midway

mié. 12/25

4:50 pm-10:06 pm

1 stop5h 16m

$176

SpringfieldChicago

SGF - ORD

SGFORD

Springfield-Branson

sáb. 2/1

2:45 pm-4:28 pm

Nonstop1h 43m

Chicago O'Hare Intl

sáb. 2/15

3:03 pm-4:39 pm

Nonstop1h 36m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

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

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

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

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

Currently, September is the cheapest month in which you can book a flight from Missouri to Illinois (average of $232). Flying from Missouri to Illinois in June is currently the most expensive (average of $308). 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 MO to IL?

Find hourly flight availability from Missouri 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 noviembre 21, 2024.

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

Weekly flight availability from Missouri to Illinois

Explore weekly flight availability from Missouri 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 noviembre 21, 2024.

The most flights from USMO to USIL are scheduled on a Wednesday (58 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (30 on average).

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 noviembre 21, 2024.
Read reviews from past customers who have flown United Airlines, Frontier and Contour from Missouri to Illinois. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

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

Southwest
8.1
Very good
5,015 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

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

Alaska Airlines
8.0
Very good
9,458 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

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

Delta
8.0
Very good
8,758 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

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

United Airlines
7.4
Good
9,172 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.2

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

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

WestJet
7.3
Good
2,810 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.2

Entertainment

7.7

Crew

8.7

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 Missouri to Illinois. 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 Missouri to Illinois one-way?

    To fly one-way, consider booking your trip with Contour, which is currently one of the cheapest options available, starting at $50. Southern / Mokulele flights start at $63 while deals on Frontier start at $65 one-way.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Missouri to Illinois (average of $232). Flying from Missouri to Illinois in June is currently the most expensive (average of $308). 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 Missouri to Illinois

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

Discover the top 6 airlines that operate flights from Missouri 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 2,629,791 searches. Data last updated noviembre 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
ContourCheapest$86Average$147FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$109Average$332FlexibilityNo cancel feeOn-time71%
Southern / MokuleleCheapest$118Average$181FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$119Average$291FlexibilityNo cancel feeOn-time69%
DeltaCheapest$161Average$356FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$195Average$311FlexibilityNo cancel feeOn-time63%
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