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O'Hare Intl

$49+ Cheap flights from Missouri to O'Hare Intl (ORD)

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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ORD
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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Cheap flight deals from Missouri to O'Hare Intl

Keep the following information in mind while searching for Missouri to O'Hare Intl flight deals. Data was last updated November 6, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$97
(United Airlines)

One-way from

$49
(United Airlines)

Popular in

April

Cheapest in

August

Average price

$297

Good round-trip deal

$171 or less

Good one-way deal

$89 or less
Provider with most accurate pricing for Lambert-St Louis-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Chicago (CHI) flights.
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From Missouri to Chicago O'Hare Intl
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One-way flight from Missouri to Chicago O'Hare Intl
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Highest demand for flights based on searches. 6% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Missouri to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Missouri to Chicago O'Hare Intl.
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Find flight deals from Missouri to O'Hare Intl

Cheapest flights from Missouri to O'Hare Intl
Explore the most affordable flight options available from Missouri to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.

This United Airlines deal was found by Cheapflights users on 11/4. 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.
Thu 12/258:05 amSTL - ORD
Nonstop1h 35mUnited Airlines
Thu 1/15:50 pmORD - STL
Nonstop1h 28mUnited Airlines
Deal found 11/4$97
This United Airlines deal was found by Cheapflights users on 11/5. 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 12/55:27 pmSTL - ORD
Nonstop1h 23mUnited Airlines
Sun 12/71:00 pmORD - STL
Nonstop1h 25mUnited Airlines
Deal found 11/5$101
This Mytrip deal was found by Cheapflights users on 11/4. 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.
Sun 11/99:50 amUIN - ORD
Nonstop1h 20mContour
Wed 11/122:00 pmORD - UIN
Nonstop1h 20mContour
Deal found 11/4$104
This Mytrip deal was found by Cheapflights users on 11/4. 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.
Fri 11/79:50 amUIN - ORD
Nonstop1h 20mContour
Sat 11/82:00 pmORD - UIN
Nonstop1h 20mContour
Deal found 11/4$105
This Mytrip deal was found by Cheapflights users on 11/5. 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.
Sun 11/99:50 amUIN - ORD
Nonstop1h 20mContour
Tue 11/112:00 pmORD - UIN
Nonstop1h 20mContour
Deal found 11/5$107
This Mytrip deal was found by Cheapflights users on 11/6. 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.
Mon 11/109:50 amUIN - ORD
Nonstop1h 20mContour
Wed 11/122:00 pmORD - UIN
Nonstop1h 20mContour
Deal found 11/6$108
This Booking.com deal was found by Cheapflights users on 11/5. 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 11/65:30 pmUIN - ORD
Nonstop1h 20mContour
Tue 11/112:00 pmORD - UIN
Nonstop1h 20mContour
Deal found 11/5$110
This Frontier deal was found by Cheapflights users on 11/6. 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.
Thu 12/412:04 pmSTL - ORD
1 stop5h 23mFrontier
Mon 12/82:26 pmORD - STL
1 stop8h 07mFrontier
Deal found 11/6$110
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:04 pmSTL - ORD
1 stop5h 23mFrontier
Wed 12/2412:39 pmORD - STL
1 stop21h 01mFrontier
Deal found 11/6$112
This American Airlines deal was found by Cheapflights users on 11/5. 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 12/35:05 amSTL - ORD
Nonstop1h 30mAmerican Airlines
Wed 12/103:23 pmORD - STL
Nonstop1h 27mAmerican Airlines
Deal found 11/5$117
This Southwest deal was found by Cheapflights users on 11/6. 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 12/178:25 amSTL - ORD
1 stop3h 50mSouthwest
Tue 1/61:45 pmORD - STL
1 stop5h 00mSouthwest
Deal found 11/6$121
This Mytrip deal was found by Cheapflights users on 11/6. 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.
Sat 11/229:30 amCGI - ORD
Nonstop1h 40mContour
Mon 11/2411:50 amORD - CGI
Nonstop1h 35mContour
Deal found 11/6$123

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to O'Hare Intl 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 November 6, 2025.
Use the filters below to find and compare flights from Missouri to Chicago O'Hare Intl Airport that are best for you.

Fly from

Missouri

Fly to

O'Hare Intl

Route

Depart

Return

Price

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Thu 12/25

8:05 am-9:40 am

Nonstop1h 35m

Chicago O'Hare Intl

Thu 1/1

5:50 pm-7:18 pm

Nonstop1h 28m

$97

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Sun 12/7

5:15 am-6:39 am

Nonstop1h 24m

Chicago O'Hare Intl

Thu 12/11

1:22 pm-2:50 pm

Nonstop1h 28m

$101

QuincyChicago

UIN - ORD

UINORD

Quincy Regional

Tue 12/2

9:50 am-11:10 am

Nonstop1h 20m

Chicago O'Hare Intl

Tue 12/9

2:00 pm-3:20 pm

Nonstop1h 20m

$104

QuincyChicago

UIN - ORD

UINORD

Quincy Regional

Fri 12/19

9:50 am-11:10 am

Nonstop1h 20m

Chicago O'Hare Intl

Fri 12/26

7:30 pm-8:50 pm

Nonstop1h 20m

$105

QuincyChicago

UIN - ORD

UINORD

Quincy Regional

Tue 12/2

9:50 am-11:10 am

Nonstop1h 20m

Chicago O'Hare Intl

Thu 12/4

2:00 pm-3:20 pm

Nonstop1h 20m

$109

QuincyChicago

UIN - ORD

UINORD

Quincy Regional

Tue 2/3

9:50 am-11:10 am

Nonstop1h 20m

Chicago O'Hare Intl

Thu 2/5

2:00 pm-3:20 pm

Nonstop1h 20m

$118

QuincyChicago

UIN - ORD

UINORD

Quincy Regional

Tue 3/10

9:50 am-11:10 am

Nonstop1h 20m

Chicago O'Hare Intl

Wed 3/11

7:30 pm-8:50 pm

Nonstop1h 20m

$118

QuincyChicago

UIN - ORD

UINORD

Quincy Regional

Fri 1/9

9:50 am-11:10 am

Nonstop1h 20m

Chicago O'Hare Intl

Mon 1/12

7:30 pm-8:50 pm

Nonstop1h 20m

$118

Cape GirardeauChicago

CGI - ORD

CGIORD

Cape Girardeau

Sat 11/22

9:30 am-11:10 am

Nonstop1h 40m

Chicago O'Hare Intl

Mon 11/24

11:50 am-1:25 pm

Nonstop1h 35m

$123

Cape GirardeauChicago

CGI - ORD

CGIORD

Cape Girardeau

Wed 12/3

9:30 am-11:10 am

Nonstop1h 40m

Chicago O'Hare Intl

Wed 12/10

11:50 am-1:25 pm

Nonstop1h 35m

$125

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 60 results
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Best time to book a flight from Missouri to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl 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.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Chicago O'Hare Intl Airport

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

Currently, September is the cheapest month in which you can book a flight from Missouri to Chicago O'Hare Intl Airport (average of $62). Flying from Missouri to Chicago O'Hare Intl Airport in August is currently the most expensive (average of $142). 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 ORD?

Find hourly flight availability from Missouri to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 6, 2025.

A simple way to save on the total cost of your ticket is to fly from Missouri to Chicago O'Hare Intl Airport in the morning. If you’re flexible enough to do this you can expect to save up to 42% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Missouri to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Missouri to O'Hare Intl. Price data was last updated on November 2, 2025.

Travelers seeking maximum savings on their Missouri to Chicago O'Hare Intl Airport flight should consider departing on Thursday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Explore weekly flight availability from Missouri to O'Hare Intl. 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 6, 2025.

The most flights from USMO to ORD are scheduled on a Thursday (64 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (44 on average).

Related info for your journey

Find useful and relevant information for your journey from Missouri to O'Hare Intl. 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 Missouri to Chicago O'Hare Intl Airport?

    Departing from Missouri to Chicago O'Hare Intl Airport will take you 1h 20m. The distance between Missouri and Chicago O'Hare Intl Airport is about 222 mi. Most flights are nonstop.

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

    The most popular route from Missouri to Chicago O'Hare Intl Airport is Kansas City - Chicago O'Hare Intl. You may also consider Lambert-St Louis - Chicago O'Hare Intl or Springfield-Branson - Chicago O'Hare Intl.

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

    No one likes to see their flight delayed. When booking a flight from Missouri to Chicago O'Hare Intl Airport consider choosing Cathay Pacific (90%), Austrian Airlines (88%) or Envoy Air (87%) as they are the most reliable in getting you off to your destination on time.

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

    Looking at all options, your cheapest flight can be booked for $125. While the most popular route (Kansas City - Chicago O'Hare Intl) can be booked for $169 on average, our data indicates $1,020 when flying from Missouri to Chicago O'Hare Intl Airport.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Missouri to Chicago O'Hare Intl Airport (average of $62). Flying from Missouri to Chicago O'Hare Intl Airport in August is currently the most expensive (average of $142). 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

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Skokie
Des Plaines
Gurnee
Hoffman Estates
Beloit
Delavan
Elgin
Oak Brook
Elk Grove Village
Downers Grove
Rockford
Naperville
Orland Park
Bridgeview
Warrenville
Waukegan
Aurora
Racine

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Missouri to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
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John F Kennedy Intl to Midway flights
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Denver to Midway flights
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Love Field to Midway flights
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Orlando to Midway flights

Top 5 airlines flying from Missouri to O'Hare Intl

Discover the top 5 airlines that operate flights from Missouri to O'Hare Intl. 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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$112Average$301FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$115Average$339FlexibilityNo cancel feeOn-time69%
FrontierCheapest$118Average$182FlexibilityNo cancel feeOn-time62%
ContourCheapest$123Average$160FlexibilityNo cancel feeOn-timeN/A
Southern / MokuleleCheapest$140Average$221FlexibilityNo cancel feeOn-timeN/A

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