Cheap flights from Missouri to Decatur from $286

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 10/4. 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

United Airlines Logo
6:30 am - 8:51 amSTL-DEC
26h 21m1 stop
United Airlines Logo
9:38 am - 3:44 pmDEC-STL
6h 06m1 stop
$286United Airlines
Find Deal
Sat, Oct 4 - Tue, Oct 7
United Airlines Logo
11:30 am - 5:59 pmSTL-DEC
6h 29m1 stop
United Airlines Logo
6:55 pm - 3:44 pmDEC-STL
20h 49m1 stop
$418United Airlines
Find Deal
Thu, Aug 21 - Mon, Aug 25
United Airlines Logo
5:30 pm - 8:56 amSTL-DEC
15h 26m1 stop
United Airlines Logo
9:42 am - 3:44 pmDEC-STL
6h 02m1 stop
$426United Airlines
Find Deal
Fri, Aug 22 - Tue, Aug 26

United Airlines flights from Missouri to Decatur, Illinois

Our best United Airlines deals on Missouri to Decatur, Illinois flight tickets
United Airlines
Oct 4
STL6:30 amLambert-St Louis
26h 21m
1 stop
DEC8:51 amDecatur Arpt
Oct 7
DEC9:38 amDecatur Arpt
6h 06m
1 stop
STL3:44 pmLambert-St Louis
United Airlines
Aug 21
STL11:30 amLambert-St Louis
6h 29m
1 stop
DEC5:59 pmDecatur Arpt
Aug 25
DEC6:55 pmDecatur Arpt
20h 49m
1 stop
STL3:44 pmLambert-St Louis
United Airlines
Aug 22
STL5:30 pmLambert-St Louis
15h 26m
1 stop
DEC8:56 amDecatur Arpt
Aug 26
DEC9:42 amDecatur Arpt
6h 02m
1 stop
STL3:44 pmLambert-St Louis

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 August 7, 2025.
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

Sat 10/4

6:30 am-8:51 am

1 stop26h 21m

Decatur Arpt

Tue 10/7

9:38 am-3:44 pm

1 stop6h 06m

$286

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Thu 8/21

11:30 am-5:59 pm

1 stop6h 29m

Decatur Arpt

Mon 8/25

6:55 pm-3:44 pm

1 stop20h 49m

$418

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Fri 8/22

5:30 pm-8:56 am

1 stop15h 26m

Decatur Arpt

Tue 8/26

9:42 am-3:44 pm

1 stop6h 02m

$426

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

Best Price Found

$286

Fastest flight time

6h 29m

Direct flights

None

Airports in Decatur, Illinois

1 airport
The best flight deal from Missouri to Decatur, Illinois found on momondo in the last 72 hours is $286
The fastest flight from Missouri to Decatur, Illinois takes 6h 29m
There are no direct flights from Missouri to Decatur, Illinois. Popular non-direct route for this connection is Lambert-St Louis Airport - Decatur Arpt Airport.
There is 1 airport near Decatur, Illinois: Decatur Arpt (DEC)
  • 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.

  • 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.

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Tue 8/12
Tue 8/19

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