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Decatur

$425+ Cheap flights from Missouri to Decatur, IL (DEC)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DEC
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from Missouri to Decatur

Keep the following information in mind while searching for Missouri to Decatur flight deals. Data was last updated October 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$425
(United Airlines)
Provider with most accurate pricing for Lambert-St Louis-Decatur Arpt flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Decatur Arpt flights.
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From Missouri to Decatur Arpt
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Find flight deals from Missouri to Decatur

Cheapest flights from Missouri to Decatur
Explore the most affordable flight options available from Missouri to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/28. 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 11/256:43 pmSTL - DEC
1 stop14h 05mUnited Airlines
Tue 12/27:08 pmDEC - STL
1 stop17h 07mUnited Airlines
Deal found 10/28$425
This United Airlines deal was found by Cheapflights users on 10/29. 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 11/1312:31 pmSTL - DEC
1 stop5h 21mUnited Airlines
Mon 11/177:08 pmDEC - STL
1 stop20h 39mUnited Airlines
Deal found 10/29$525
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Sun 11/912:31 pmSTL - DEC
1 stop5h 21mUnited Airlines
Sun 11/169:44 amDEC - STL
1 stop13h 01mUnited Airlines
Deal found 10/27$615
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Wed 11/1212:31 pmSTL - DEC
1 stop5h 21mUnited Airlines
Sun 11/167:08 pmDEC - STL
1 stop20h 38mUnited Airlines
Deal found 10/28$655
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Sat 11/810:00 amSTL - DEC
1 stop22h 48mUnited Airlines
Sat 11/157:08 pmDEC - STL
1 stop20h 38mUnited Airlines
Deal found 10/27$721
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Sun 11/212:31 pmSTL - DEC
1 stop5h 21mUnited Airlines
Mon 11/39:44 amDEC - STL
1 stop6h 02mUnited Airlines
Deal found 10/28$730

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Decatur 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 October 29, 2025.
Use the filters below to find and compare flights from Missouri to Decatur that are best for you.

Fly from

Missouri

Fly to

Decatur

Route

Depart

Return

Price

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Thu 11/13

12:31 pm-5:52 pm

1 stop5h 21m

Decatur Arpt

Mon 11/17

7:08 pm-3:47 pm

1 stop20h 39m

$525

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Sun 11/9

12:31 pm-5:52 pm

1 stop5h 21m

Decatur Arpt

Sun 11/16

9:44 am-10:45 pm

1 stop13h 01m

$615

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Wed 11/12

12:31 pm-5:52 pm

1 stop5h 21m

Decatur Arpt

Sun 11/16

7:08 pm-3:46 pm

1 stop20h 38m

$655

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Sat 11/8

10:00 am-8:48 am

1 stop22h 48m

Decatur Arpt

Sat 11/15

7:08 pm-3:46 pm

1 stop20h 38m

$721

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Sun 11/2

12:31 pm-5:52 pm

1 stop5h 21m

Decatur Arpt

Mon 11/3

9:44 am-3:46 pm

1 stop6h 02m

$730

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Best time to book a flight from Missouri to Decatur

Have a flexible travel schedule? Discover the best time to fly to Decatur 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 Decatur
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Missouri to Decatur. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Decatur from Missouri?

    Decatur Arpt (DEC), located 4.7 mi from the city center, is the airport you fly into when you book flights from Missouri to Decatur.

  • How long is the flight from Missouri to Decatur, Illinois?

    United Airlines can get you from Missouri to Decatur, Illinois in just under 5h 21m. Your travel time can differ by up to . Airlines will cover a distance of 110 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Missouri to Decatur by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Decatur?

Book flights to Decatur if you plan to visit one of these locations
Mattoon
Effingham

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