Latest deals
FAQs
Price Alerts

Cheap flights from Missouri to Decatur from $274

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Decatur departing on 8/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Missouri to Decatur

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:59 pm - 5:59 pm
STL
-
DEC
5h 00m
1 stop
United Airlines Logo
9:12 am - 3:38 pm
DEC
-
STL
6h 26m
1 stop
$274United Airlines
Wed, Aug 12 - Wed, Aug 19
United Airlines Logo
6:00 am - 5:51 pm
STL
-
DEC
11h 51m
1 stop
United Airlines Logo
9:42 am - 11:09 pm
DEC
-
STL
13h 27m
1 stop
$334United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
12:59 pm - 5:59 pm
STL
-
DEC
5h 00m
1 stop
United Airlines Logo
7:20 pm - 10:59 pm
DEC
-
STL
3h 39m
1 stop
$344United Airlines
Sat, Aug 15 - Fri, Aug 21

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

United Airlines flights from Missouri to Decatur, Illinois

Our best United Airlines deals on Missouri to Decatur, Illinois flight tickets
United Airlines
Aug 12
STL12:59 pmLambert-St Louis
5h 00m
1 stop
DEC5:59 pmDecatur Arpt
Aug 19
DEC9:12 amDecatur Arpt
6h 26m
1 stop
STL3:38 pmLambert-St Louis
$274
United Airlines
Nov 14
STL6:00 amLambert-St Louis
11h 51m
1 stop
DEC5:51 pmDecatur Arpt
Nov 18
DEC9:42 amDecatur Arpt
13h 27m
1 stop
STL11:09 pmLambert-St Louis
$334
United Airlines
Aug 15
STL12:59 pmLambert-St Louis
5h 00m
1 stop
DEC5:59 pmDecatur Arpt
Aug 21
DEC7:20 pmDecatur Arpt
3h 39m
1 stop
STL10:59 pmLambert-St Louis
$344

momondo Fare Finder

 
Customize your flight search to find flights from Missouri to Decatur, 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, momondo users made 832,500 searches. Data last updated July 18, 2026.
Use the filters below to find and compare flights from Missouri to Decatur, Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Wed 8/12

12:59 pm-5:59 pm

1 stop5h 00m

Decatur Arpt

Wed 8/19

9:12 am-3:38 pm

1 stop6h 26m

$274

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Sat 11/14

6:00 am-5:51 pm

1 stop11h 51m

Decatur Arpt

Wed 11/18

9:42 am-11:09 pm

1 stop13h 27m

$334
Quickest round-trip

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Sat 8/15

12:59 pm-5:59 pm

1 stop5h 00m

Decatur Arpt

Fri 8/21

7:20 pm-10:59 pm

1 stop3h 39m

$344

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Missouri to Decatur, Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Decatur, Illinois

Fastest flight time

5h 00m

Direct flights

None
The fastest flight from Missouri to Decatur, Illinois takes 5h 00m
There are no direct flights from Missouri to Decatur, Illinois. There are no popular flight routes from Missouri to Decatur, Illinois.
Search flight deals

Frequently asked questions about flying from Missouri to Decatur, Illinois

  • When did momondo last update prices for flights from Missouri to Decatur Arpt Airport?

    Prices for flights from Missouri to Decatur Arpt Airport were last updated today.

  • How old do you have to be to fly from Missouri to Decatur Arpt Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Decatur Arpt Airport.

  • What documentation or ID do you need to fly to Decatur Arpt Airport?

    The required travel and health documents for your Decatur Arpt Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Decatur Arpt Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Missouri to Decatur, Illinois

  • How do I get Price Alerts for flights from Missouri to Decatur, Illinois?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Missouri from Decatur, Illinois. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Missouri to Decatur, Illinois with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Traveling to a place near Decatur?

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

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to Decatur?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Missouri to Decatur for you.

Can I find flights from Missouri to Decatur with flexible booking policies on momondo?

momondo does allow users to show only those flights to Decatur from Missouri which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Missouri to Decatur?

Once all potential Missouri to Decatur flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Missouri to Decatur right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Decatur, momondo offers a useful price alert feature which will track prices for flights to Decatur from Missouri and alert you when they change.

An easier way to manage your Decatur, Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 8/17
Mon 8/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States