$200 Cheap Flights from Decatur (DEC) to Des Moines (DSM)

View $200 flight on Thu, Sep 25, 2025Opens in a new window

Popular airlines from Decatur, IL (DEC) to Des Moines International Airport (DSM)

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Cheap Flights from Decatur to Des Moines (DEC-DSM)

Prices were available within the past 7 days and start at $200 for one-way flights and $274 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Aug 26 - Wed, Sep 17
DEC
Decatur
DSM
Des Moines
$274 Roundtrip, found 6 days ago
$274
Roundtrip
found 6 days ago
Select United flight, departing Tue, Aug 26 from Decatur to Des Moines, returning Wed, Sep 17, priced at $274 found 6 days ago
United
Tue, Jul 15 - Wed, Aug 6
DEC
Decatur
DSM
Des Moines
$279 Roundtrip, found 6 days ago
$279
Roundtrip
found 6 days ago
Select United flight, departing Tue, Jul 15 from Decatur to Des Moines, returning Wed, Aug 6, priced at $279 found 6 days ago
United
Tue, Aug 5 - Wed, Aug 27
DEC
Decatur
DSM
Des Moines
$335 Roundtrip, found 6 days ago
$335
Roundtrip
found 6 days ago
Select United flight, departing Tue, Aug 5 from Decatur to Des Moines, returning Wed, Aug 27, priced at $335 found 6 days ago
United
Tue, Jul 15 - Fri, Aug 1
DEC
Decatur
DSM
Des Moines
$340 Roundtrip, found 6 days ago
$340
Roundtrip
found 6 days ago
Select United flight, departing Tue, Jul 15 from Decatur to Des Moines, returning Fri, Aug 1, priced at $340 found 6 days ago
United
Tue, Jul 15 - Sun, Aug 3
DEC
Decatur
DSM
Des Moines
$345 Roundtrip, found 6 days ago
$345
Roundtrip
found 6 days ago
Select United flight, departing Tue, Jul 15 from Decatur to Des Moines, returning Sun, Aug 3, priced at $345 found 6 days ago
United
Sat, Aug 30 - Wed, Sep 17
DEC
Decatur
DSM
Des Moines
$351 Roundtrip, found 6 days ago
$351
Roundtrip
found 6 days ago
Select United flight, departing Sat, Aug 30 from Decatur to Des Moines, returning Wed, Sep 17, priced at $351 found 6 days ago
United
Fri, Aug 15 - Wed, Sep 3
DEC
Decatur
DSM
Des Moines
$364 Roundtrip, found 6 days ago
$364
Roundtrip
found 6 days ago
Select United flight, departing Fri, Aug 15 from Decatur to Des Moines, returning Wed, Sep 3, priced at $364 found 6 days ago
United
Mon, Jul 21 - Sun, Aug 10
DEC
Decatur
DSM
Des Moines
$365 Roundtrip, found 6 days ago
$365
Roundtrip
found 6 days ago
Select United flight, departing Mon, Jul 21 from Decatur to Des Moines, returning Sun, Aug 10, priced at $365 found 6 days ago
United
Mon, Jul 14 - Sun, Jul 27
DEC
Decatur
DSM
Des Moines
$375 Roundtrip, found 6 days ago
$375
Roundtrip
found 6 days ago
Select United flight, departing Mon, Jul 14 from Decatur to Des Moines, returning Sun, Jul 27, priced at $375 found 6 days ago
United
Sat, Aug 23 - Wed, Sep 10
DEC
Decatur
DSM
Des Moines
$396 Roundtrip, found 6 days ago
$396
Roundtrip
found 6 days ago
Select United flight, departing Sat, Aug 23 from Decatur to Des Moines, returning Wed, Sep 10, priced at $396 found 6 days ago
United
Mon, Jul 21 - Sun, Aug 3
DEC
Decatur
DSM
Des Moines
$401 Roundtrip, found 6 days ago
$401
Roundtrip
found 6 days ago
Select United flight, departing Mon, Jul 21 from Decatur to Des Moines, returning Sun, Aug 3, priced at $401 found 6 days ago
United
Fri, Aug 1 - Wed, Aug 20
DEC
Decatur
DSM
Des Moines
$405 Roundtrip, found 6 days ago
$405
Roundtrip
found 6 days ago
Select United flight, departing Fri, Aug 1 from Decatur to Des Moines, returning Wed, Aug 20, priced at $405 found 6 days ago
United
Wed, Jul 16 - Sun, Aug 3
DEC
Decatur
DSM
Des Moines
$406 Roundtrip, found 6 days ago
$406
Roundtrip
found 6 days ago
Select United flight, departing Wed, Jul 16 from Decatur to Des Moines, returning Sun, Aug 3, priced at $406 found 6 days ago
Flights from Decatur (DEC) to Des Moines (DSM)
Origin airport
Decatur
Destination airport
Des Moines Intl.
Roundtrip price
$274
Distance
276 mi

Decatur to Des Moines Flights

The cheapest times to fly from Decatur to Des Moines

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Decatur to Des Moines are during the month of August. You can find some of the cheapest flights from Decatur to Des Moines with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Decatur to Des Moines

Sunday is one of the best days to book for cheap flights from Decatur to Des Moines: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Decatur to Des Moines

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Decatur to Des Moines in 2025. You can also book with separate airlines for your outbound and return journeys, from $200 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Decatur to Des Moines flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Decatur to Des Moines airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Decatur Airport (DEC) to Des Moines Intl. Airport (DSM) cost?
Discover the latest flight deals from DEC to DSM by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from DEC to DSM?
The cheapest flights from DEC to DSM are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from DEC to DSM?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from DEC to DSM. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Decatur Airport (DEC) to Des Moines Intl. Airport (DSM)?
Direct flights from Decatur Airport (DEC) to Des Moines Intl. Airport (DSM) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DEC to DSM?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on a number of factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Decatur Airport (DEC) to Des Moines Intl. Airport (DSM)?
To avoid potential delays on the Decatur Airport (DEC) to Des Moines Intl. Airport (DSM) route, aim to travel before 3 PM. Departures after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Decatur Airport (DEC) to Des Moines Intl. Airport (DSM) last-minute?
Booking your ticket from DEC to DSM just before your journey is usually more expensive. But if there's some wiggle room with your schedule, you could snag a cheap last-minute fare.
Is it cheaper to book a DEC to DSM flight and hotel package?
Compared with arranging hotels and flights separately, booking a DEC to DSM flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place will take the hassle out of travel planning. Just secure your flights and select from our extensive range of stays, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Decatur Airport (DEC) to Des Moines Intl. Airport (DSM)?
Typically, you can modify or cancel your DEC to DSM flight. However, additional fees may apply, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you want more details, head to our Customer Service portal.

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*Available to One Key members.