Cheap flights from Missouri to Decatur from $381

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 2/19. 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
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:41 am - 5:54 pm
STL
-
DEC
10h 13m
1 stop
United Airlines Logo
7:15 pm - 10:59 pm
DEC
-
STL
3h 44m
1 stop
$381United Airlines
Thu, Feb 19 - Thu, Feb 26
United Airlines Logo
1:15 pm - 6:01 pm
STL
-
DEC
4h 46m
1 stop
United Airlines Logo
9:49 am - 2:30 pm
DEC
-
STL
4h 41m
1 stop
$415United Airlines
Sat, Feb 7 - Wed, Feb 11

United Airlines flights from Missouri to Decatur, Illinois

Our best United Airlines deals on Missouri to Decatur, Illinois flight tickets
United Airlines
Feb 19
STL7:41 amLambert-St Louis
10h 13m
1 stop
DEC5:54 pmDecatur Arpt
Feb 26
DEC7:15 pmDecatur Arpt
3h 44m
1 stop
STL10:59 pmLambert-St Louis
$381
United Airlines
Feb 7
STL1:15 pmLambert-St Louis
4h 46m
1 stop
DEC6:01 pmDecatur Arpt
Feb 11
DEC9:49 amDecatur Arpt
4h 41m
1 stop
STL2:30 pmLambert-St Louis
$415

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 January 24, 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

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Thu 2/19

7:41 am-5:54 pm

1 stop10h 13m

Decatur Arpt

Thu 2/26

7:15 pm-10:59 pm

1 stop3h 44m

$381

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Sat 2/7

1:15 pm-6:01 pm

1 stop4h 46m

Decatur Arpt

Wed 2/11

9:49 am-2:30 pm

1 stop4h 41m

$415

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Decatur from

How to get the cheapest flight ticket from Missouri to Decatur, Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Missouri to Decatur Arpt?

United Airlines is the most popular carrier operating from Missouri to Decatur Arpt

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

4h 46m

Direct flights

None
The fastest flight from Missouri to Decatur, Illinois takes 4h 46m
There are no direct flights from Missouri to Decatur, Illinois. There are no popular flight routes 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.

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.

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1 adult
Mon 2/23
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