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Cheap flights from Missouri to Decatur from $304

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 7/14. 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
11:25 am - 5:56 pm
STL
-
DEC
6h 31m
1 stop
United Airlines Logo
6:45 pm - 11:29 pm
DEC
-
STL
4h 44m
1 stop
$304United Airlines
Tue, Jul 14 - Sat, Jul 18
United Airlines Logo
1:13 pm - 5:56 pm
STL
-
DEC
4h 43m
1 stop
United Airlines Logo
9:37 am - 3:46 pm
DEC
-
STL
6h 09m
1 stop
$310United Airlines
Fri, Jul 31 - Fri, Aug 7
United Airlines Logo
12:59 pm - 6:44 pm
STL
-
DEC
5h 45m
1 stop
United Airlines Logo
9:13 am - 3:38 pm
DEC
-
STL
6h 25m
1 stop
$323United Airlines
Thu, Sep 10 - Sun, Sep 13
United Airlines Logo
11:25 am - 5:56 pm
STL
-
DEC
6h 31m
1 stop
United Airlines Logo
6:45 pm - 11:29 pm
DEC
-
STL
4h 44m
1 stop
$368United Airlines
Sat, Jul 18 - Wed, Jul 22
United Airlines Logo
9:04 am - 8:35 am
STL
-
DEC
23h 31m
1 stop
United Airlines Logo
7:18 pm - 10:59 pm
DEC
-
STL
3h 41m
1 stop
$390United Airlines
Tue, Oct 20 - Sat, Oct 24
United Airlines Logo
9:04 am - 8:35 am
STL
-
DEC
23h 31m
1 stop
United Airlines Logo
7:18 pm - 10:59 pm
DEC
-
STL
3h 41m
1 stop
$395United Airlines
Tue, Oct 20 - Sat, Oct 24
United Airlines Logo
1:29 pm - 6:43 pm
STL
-
DEC
5h 14m
1 stop
United Airlines Logo
7:18 pm - 10:59 pm
DEC
-
STL
3h 41m
1 stop
$424United Airlines
Tue, Oct 20 - Sat, Oct 24
United Airlines Logo
11:25 am - 5:56 pm
STL
-
DEC
6h 31m
1 stop
United Airlines Logo
9:37 am - 3:46 pm
DEC
-
STL
6h 09m
1 stop
$450United Airlines
Wed, Jul 15 - Sun, Jul 19
United Airlines Logo
11:25 am - 5:56 pm
STL
-
DEC
6h 31m
1 stop
United Airlines Logo
6:45 pm - 11:29 pm
DEC
-
STL
4h 44m
1 stop
$473United Airlines
Sun, Aug 2 - Sat, Aug 8
United Airlines Logo
1:13 pm - 5:56 pm
STL
-
DEC
4h 43m
1 stop
United Airlines Logo
6:45 pm - 11:29 pm
DEC
-
STL
4h 44m
1 stop
$480United Airlines
Thu, Jul 16 - Mon, Jul 20

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United Airlines flights from Missouri to Decatur, Illinois

Our best United Airlines deals on Missouri to Decatur, Illinois flight tickets
United Airlines
Jul 14
STL11:25 amLambert-St Louis
6h 31m
1 stop
DEC5:56 pmDecatur Arpt
Jul 18
DEC6:45 pmDecatur Arpt
4h 44m
1 stop
STL11:29 pmLambert-St Louis
$304
United Airlines
Jul 31
STL1:13 pmLambert-St Louis
4h 43m
1 stop
DEC5:56 pmDecatur Arpt
Aug 7
DEC9:37 amDecatur Arpt
6h 09m
1 stop
STL3:46 pmLambert-St Louis
$310
United Airlines
Sep 10
STL12:59 pmLambert-St Louis
5h 45m
1 stop
DEC6:44 pmDecatur Arpt
Sep 13
DEC9:13 amDecatur Arpt
6h 25m
1 stop
STL3:38 pmLambert-St Louis
$323

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 4, 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

Tue 7/14

11:25 am-5:56 pm

1 stop6h 31m

Decatur Arpt

Sat 7/18

6:45 pm-11:29 pm

1 stop4h 44m

$304

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Fri 7/31

1:13 pm-5:56 pm

1 stop4h 43m

Decatur Arpt

Fri 8/7

9:37 am-3:46 pm

1 stop6h 09m

$310

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Thu 9/10

12:59 pm-6:44 pm

1 stop5h 45m

Decatur Arpt

Sun 9/13

9:13 am-3:38 pm

1 stop6h 25m

$323

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Sat 7/18

11:25 am-5:56 pm

1 stop6h 31m

Decatur Arpt

Wed 7/22

6:45 pm-11:29 pm

1 stop4h 44m

$368

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Tue 10/20

9:04 am-8:35 am

1 stop23h 31m

Decatur Arpt

Sat 10/24

7:18 pm-10:59 pm

1 stop3h 41m

$390

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Tue 10/20

9:04 am-8:35 am

1 stop23h 31m

Decatur Arpt

Sat 10/24

7:18 pm-10:59 pm

1 stop3h 41m

$395
Quickest round-trip

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Tue 10/20

1:29 pm-6:43 pm

1 stop5h 14m

Decatur Arpt

Sat 10/24

7:18 pm-10:59 pm

1 stop3h 41m

$424

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Wed 7/15

11:25 am-5:56 pm

1 stop6h 31m

Decatur Arpt

Sun 7/19

9:37 am-3:46 pm

1 stop6h 09m

$450

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Sun 8/2

11:25 am-5:56 pm

1 stop6h 31m

Decatur Arpt

Sat 8/8

6:45 pm-11:29 pm

1 stop4h 44m

$473

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Thu 7/16

1:13 pm-5:56 pm

1 stop4h 43m

Decatur Arpt

Mon 7/20

6:45 pm-11:29 pm

1 stop4h 44m

$480

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

4h 43m

Direct flights

None
The fastest flight from Missouri to Decatur, Illinois takes 4h 43m
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.

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