HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Missouri

$46+ Cheap flights from O'Hare Intl (ORD) 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — STL
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from O'Hare Intl to Missouri with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from O'Hare Intl to Missouri

Keep the following information in mind while searching for O'Hare Intl to Missouri flight deals. Data was last updated August 20, 2025.

Round-trip from

$91
(American Airlines)

One-way from

$46
(American Airlines)

Popular in

June

Cheapest in

September

Average price

$307

Good round-trip deal

$151 or less

Good one-way deal

$80 or less
From Chicago O'Hare Intl to Missouri
Search Deals
One-way flight from Chicago O'Hare Intl to Missouri
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals
Price to beat on a round-trip flight from Chicago O'Hare Intl to Missouri.
Search Deals
Price to beat on a one-way flight from Chicago O'Hare Intl to Missouri.
Search Deals

Find flight deals from O'Hare Intl to Missouri

Cheapest flights from O'Hare Intl to Missouri
Explore the most affordable flight options available from O'Hare Intl to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This American Airlines deal was found by Cheapflights users on 8/19. 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.
Wed 9/247:10 pmORD - STL
Nonstop1h 22mAmerican Airlines
Mon 10/277:16 amSTL - ORD
Nonstop1h 27mAmerican Airlines
Deal found 8/19$91
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Thu 9/1110:34 pmORD - STL
Nonstop1h 14mAmerican Airlines
Mon 9/157:23 amSTL - ORD
Nonstop1h 22mAmerican Airlines
Deal found 8/19$92
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Wed 10/18:31 pmORD - STL
Nonstop1h 22mAmerican Airlines
Thu 10/27:23 amSTL - ORD
Nonstop1h 22mAmerican Airlines
Deal found 8/19$93
This Southwest deal was found by Cheapflights users on 8/19. 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.
Wed 9/241:50 pmORD - STL
1 stop8h 05mSouthwest
Tue 10/283:50 pmSTL - ORD
1 stop7h 15mSouthwest
Deal found 8/19$97
This Southwest deal was found by Cheapflights users on 8/20. 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.
Thu 9/111:50 pmORD - STL
1 stop9h 35mSouthwest
Mon 9/155:10 amSTL - ORD
1 stop5h 35mSouthwest
Deal found 8/20$102
This American Airlines deal was found by Cheapflights users on 8/18. 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.
Mon 11/176:45 amORD - STL
Nonstop1h 25mAmerican Airlines
Tue 11/185:40 pmSTL - ORD
Nonstop1h 40mAmerican Airlines
Deal found 8/18$104
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Tue 9/1612:55 pmORD - STL
Nonstop1h 24mUnited Airlines
Fri 9/197:04 pmSTL - ORD
Nonstop1h 32mUnited Airlines
Deal found 8/19$114
This American Airlines deal was found by Cheapflights users on 8/18. 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.
Mon 9/1510:34 pmORD - STL
Nonstop1h 14mAmerican Airlines
Mon 9/227:23 amSTL - ORD
Nonstop1h 22mAmerican Airlines
Deal found 8/18$117
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Sat 10/1110:34 pmORD - STL
Nonstop1h 20mAmerican Airlines
Sun 10/126:00 amSTL - ORD
Nonstop1h 23mAmerican Airlines
Deal found 8/19$121
This Southwest deal was found by Cheapflights users on 8/18. 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.
Mon 11/171:45 pmORD - STL
1 stop8h 25mSouthwest
Tue 11/185:55 amSTL - ORD
1 stop7h 05mSouthwest
Deal found 8/18$122
This Booking.com deal was found by Cheapflights users on 8/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/255:30 pmORD - CGI
Nonstop1h 35mContour
Mon 9/299:10 amCGI - ORD
Nonstop1h 40mContour
Deal found 8/18$128
This KAYAK deal was found by Cheapflights users on 8/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1811:50 amORD - CGI
Nonstop1h 35mContour
Sun 10/199:10 amCGI - ORD
Nonstop1h 40mContour
Deal found 8/19$144

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl 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 August 20, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Missouri that are best for you.

Fly from

O'Hare Intl

Fly to

Missouri

Route

Depart

Return

Price

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 9/24

7:10 pm-8:32 pm

Nonstop1h 22m

Lambert-St Louis

Tue 10/21

4:34 pm-6:02 pm

Nonstop1h 28m

$91

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 10/1

12:09 pm-1:31 pm

Nonstop1h 22m

Lambert-St Louis

Sat 10/4

7:23 am-8:45 am

Nonstop1h 22m

$91

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 9/24

7:10 pm-8:32 pm

Nonstop1h 22m

Lambert-St Louis

Mon 10/27

7:16 am-8:43 am

Nonstop1h 27m

$91

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 9/16

8:00 am-9:26 am

Nonstop1h 26m

Lambert-St Louis

Tue 9/23

6:10 am-7:30 am

Nonstop1h 20m

$91

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 9/24

7:10 pm-8:32 pm

Nonstop1h 22m

Lambert-St Louis

Wed 10/22

7:16 am-8:43 am

Nonstop1h 27m

$91

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 9/18

10:34 pm-11:48 pm

Nonstop1h 14m

Lambert-St Louis

Tue 10/7

7:16 am-8:43 am

Nonstop1h 27m

$91

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Mon 9/15

6:59 pm-8:25 pm

Nonstop1h 26m

Lambert-St Louis

Wed 9/17

6:10 am-7:30 am

Nonstop1h 20m

$91

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 9/24

7:10 pm-8:32 pm

Nonstop1h 22m

Lambert-St Louis

Tue 10/28

7:16 am-8:43 am

Nonstop1h 27m

$91

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 10/4

8:00 am-9:26 am

Nonstop1h 26m

Lambert-St Louis

Sat 10/11

6:00 am-7:23 am

Nonstop1h 23m

$91

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 11/11

3:23 pm-4:47 pm

Nonstop1h 24m

Lambert-St Louis

Thu 11/13

2:17 pm-3:46 pm

Nonstop1h 29m

$91

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from O'Hare Intl to Missouri

Have a flexible travel schedule? Discover the best time to fly to Missouri from O'Hare Intl 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 Chicago O'Hare Intl Airport to Missouri

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Missouri?

Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Missouri (average of $311). Flying from Chicago O'Hare Intl Airport 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 ORD to MO?

Find hourly flight availability from O'Hare Intl 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 August 20, 2025.

When flying from Chicago O'Hare Intl Airport to Missouri, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Chicago O'Hare Intl Airport to Missouri

Explore weekly flight availability from O'Hare Intl 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 August 20, 2025.

The most flights from ORD to USMO are scheduled on a Monday (66 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (41 on average).

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 August 20, 2025.
Peruse reviews from past customers who have flown with United Airlines, American Airlines, and Contour from Chicago O'Hare Intl Airport to Missouri to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,928 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

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
8,928 reviews
United Airlines
7.4
Good
8,928 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

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
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,928 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

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!
Contour
6.9
Okay
33 reviews
United Airlines
7.4
Good
8,928 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

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 O'Hare Intl to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago O'Hare Intl Airport to Missouri?

    Airlines like American Airlines, Contour, and United Airlines fly from Chicago O'Hare Intl Airport to Missouri in about 1h 22m. The time it takes to get you to your destination is usually consistent. Chicago O'Hare Intl Airport and Missouri are separated by a distance of 258 mi. All flights are typically nonstop.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Missouri one-way?

    The cheapest airlines for a one-way flight from Chicago O'Hare Intl Airport to Missouri are American Airlines ($46), Contour ($61), and Frontier ($95).

  • What are the most popular routes from Chicago O'Hare Intl Airport to Missouri?

    The most popular flight routes from Chicago O'Hare Intl Airport to Missouri are Chicago O'Hare Intl - Kansas City, Chicago O'Hare Intl - Lambert-St Louis and Chicago O'Hare Intl - Springfield-Branson.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to Missouri?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago O'Hare Intl Airport to Missouri on time: Republic Airways (81%), Envoy Air (78%), SkyWest Airlines (75%).

  • What are the cheapest flights from Chicago O'Hare Intl Airport to Missouri?

    Looking at all options, your cheapest flight can be booked for $48. While the most popular route (Chicago O'Hare Intl - Kansas City) can be booked for $165 on average our data indicates $285 when flying from Chicago O'Hare Intl Airport to Missouri.

  • Can I find deals for flights from O'Hare Intl to Missouri that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Missouri flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Missouri?

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

  • Can I find deals for business class flights from O'Hare Intl to Missouri?

    Yes. Cheapflights offers flight deals from O'Hare Intl 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 Chicago O'Hare Intl Airport to Missouri?

    Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Missouri (average of $311). Flying from Chicago O'Hare Intl Airport 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for O'Hare Intl to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to LaGuardia flights
O'Hare Intl to Dallas/Fort Worth flights
O'Hare Intl to John F Kennedy Intl flights
O'Hare Intl to Las Vegas flights
O'Hare Intl to Newark flights
O'Hare Intl to Seattle flights
O'Hare Intl to Sky Harbor Intl flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to Orlando flights
O'Hare Intl to Denver flights
O'Hare Intl to San Francisco flights
Midway to Dallas/Fort Worth flights
O'Hare Intl to Fort Lauderdale flights
O'Hare Intl to Boston flights
O'Hare Intl to Miami flights
Midway to Las Vegas flights
O'Hare Intl to Dulles Intl flights
O'Hare Intl to Reagan-National flights
O'Hare Intl to Atlanta flights
O'Hare Intl to San Diego flights
O'Hare Intl to Baltimore flights
O'Hare Intl to Tampa flights
Midway to Newark flights
O'Hare Intl to Honolulu flights
Midway to LaGuardia flights
O'Hare Intl to Ontario flights
O'Hare Intl to Nashville flights
O'Hare Intl to Santa Ana flights
Midway to John F Kennedy Intl flights
O'Hare Intl to Austin flights
O'Hare Intl to Portland flights
O'Hare Intl to Philadelphia flights
Midway to Atlanta flights
Midway to Denver flights
O'Hare Intl to Fort Myers flights
O'Hare Intl to Hobby flights
O'Hare Intl to Salt Lake City flights
Midway to Orlando flights
Midway to Sky Harbor Intl flights
Midway to Miami flights
Midway to Hobby flights
O'Hare Intl to Cleveland flights
Midway to Tampa flights
O'Hare Intl to Charleston flights
O'Hare Intl to George Bush Intcntl flights
O'Hare Intl to New Orleans flights
O'Hare Intl to Charlotte flights
O'Hare Intl to Minneapolis flights
Midway to Dulles Intl flights
Midway to San Francisco flights

Top 4 airlines flying from O'Hare Intl to Missouri

Discover the top 4 airlines that operate flights from O'Hare Intl 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
ContourCheapest$114Average$183FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$115Average$329FlexibilityNo cancel feeOn-time71%
Southern / MokuleleCheapest$118Average$218FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$152Average$349FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.