In terms of precipitation, rainfall in Decatur, Illinois ranges from 1.7 - 4.4 inches per month. June is typically the wettest month, when rainfall can reach 4.4 in. January is typically the driest time to visit Decatur, Illinois when rainfall is around 1.7 in.

If weather is an important factor for your trip to Decatur, Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

What is the cheapest time of day to fly from MO to DEC?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missouri to Decatur, Illinois as you normally would.

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.

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.

$286+ Flights from Missouri to Decatur, IL

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Cheap flight deals from Missouri to Decatur

Round-trip from	$286 (United Airlines)

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 July 31, 2025.

Sat 10/45:28 pmSTL - DEC

1 stop15h 23mUnited Airlines

Tue 10/79:38 amDEC - STL

1 stop4h 49mUnited Airlines

Deal found 7/30

$286

Best flights from Missouri to Decatur
Discover carefully curated flight deals from Missouri to Decatur that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2025.

Sat 10/45:28 pmSTL - DEC

1 stop15h 23mUnited Airlines

Tue 10/79:38 amDEC - STL

1 stop4h 49mUnited Airlines

Deal found 7/30

$286

One-way flights from Missouri to Decatur
Search for one-way flight options from Missouri to Decatur. Find affordable one-way fares based on user searches. Data last updated July 31, 2025.

Sun 8/101:25 pmSTL - DEC

1 stop19h 23mUnited Airlines

Deal found 7/31

$424

Fly from

Fly to

Route

Depart

Return

Price

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Sat 10/4

5:28 pm-8:51 am

1 stop15h 23m

Decatur Arpt

Tue 10/7

9:38 am-2:27 pm

1 stop4h 49m

$286

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Sun 8/10

1:25 pm-8:48 am

1 stop19h 23m

$424

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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.

Reviews of airlines servicing Decatur

Peruse reviews from past customers who have flown with United Airlines from Missouri to Decatur to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,900 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines

7.4

Good

8,900 reviews

United Airlines

7.4

Good

8,900 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

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.
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

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$286+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Missouri to Decatur with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 July 31, 2025.

Round-trip from

Find flight deals from Missouri to Decatur

Cheapest flights from Missouri to DecaturExplore 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 July 31, 2025.

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 July 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Missouri to Decatur that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Decatur

Reviews of airlines servicing Decatur

Peruse reviews from past customers who have flown with United Airlines from Missouri to Decatur to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

How can I find direct flights from Missouri to Decatur?

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

Traveling to a place near Decatur?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Missouri to Decatur

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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 July 31, 2025.