What is the cheapest airline to fly from Washington, D.C. to Decatur, Illinois round-trip?

Flying on United Airlines is currently your cheapest option to Decatur, Illinois, with prices starting at $254.

What is the cheapest day to fly from Washington, D.C. to Decatur, Illinois?

Travelers seeking maximum savings on their Washington, D.C. to Decatur, Illinois flight should consider departing on Friday mornings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 day to fly round-trip from Washington, D.C. to Decatur, Illinois?

Travelers have found that booking a Thursday departure is the best way to save up to 68% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

One of the essential ways to save on airfare from Washington, D.C. to Decatur, Illinois is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 4% on airfare.

What airport do you fly into for flights to Decatur from Washington, D.C.?

Located just 4.7 mi from the city center, Decatur Arpt is the airport most travelers will use when flying to Decatur from Washington, D.C.. Booking flights from Washington, D.C. to Decatur Arpt (DEC) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. from 1 airline.

Can I find deals for flights from Washington, D.C. to Decatur that include hotel bookings?

Yes. In addition to deals on Washington, D.C. to Decatur flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington, D.C. to Decatur?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Decatur.

Can I find deals for business class flights from Washington, D.C. to Decatur?

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$217+ Flights from Washington, D.C. to Decatur, IL

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Cheap flight deals from Washington, D.C. to Decatur

Round-trip from	$254 (United Airlines)
One-way from	$217 (United Airlines)

From Washington, D.C. (WAS) to Decatur Arpt

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One-way flight from Washington, D.C. (WAS) to Decatur Arpt

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Cheapest flights from Washington, D.C. to Decatur
Explore the most affordable flight options available from Washington, D.C. to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

jue. 8/141:00 pmDCA - DEC

1 stop6h 03mUnited Airlines

lun. 8/189:45 amDEC - DCA

1 stop6h 16mUnited Airlines

Deal found 7/30

$254

vie. 9/266:29 amBWI - DEC

1 stop12h 35mUnited Airlines

dom. 9/289:30 amDEC - BWI

1 stop23h 25mUnited Airlines

Deal found 7/30

$394

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

jue. 8/141:00 pmDCA - DEC

1 stop6h 03mUnited Airlines

lun. 8/189:45 amDEC - DCA

1 stop6h 16mUnited Airlines

Deal found 7/30

$254

vie. 9/265:20 pmBWI - DEC

1 stop16h 31mUnited Airlines

dom. 9/286:55 pmDEC - BWI

1 stop25h 27mUnited Airlines

Deal found 7/31

$394

Last-minute flights from Washington, D.C. to Decatur
Discover last-minute flight deals from Washington, D.C. to Decatur. Data last updated julio 31, 2025 and is based on user searches.

vie. 8/86:50 pmBWI - DEC

1 stop14h 58mUnited Airlines

dom. 8/106:55 pmDEC - BWI

1 stop14h 08mUnited Airlines

Deal found 7/30

$668

jue. 8/141:00 pmDCA - DEC

1 stop6h 03mUnited Airlines

lun. 8/189:45 amDEC - DCA

1 stop6h 16mUnited Airlines

Deal found 7/30

$254

jue. 8/1410:59 amBWI - DEC

1 stop8h 04mUnited Airlines

lun. 8/186:55 pmDEC - BWI

1 stop14h 00mUnited Airlines

Deal found 7/30

$457

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

dom. 9/146:15 amBWI - DEC

1 stop12h 44mUnited Airlines

Deal found 7/31

$217

dom. 9/147:25 amDCA - DEC

1 stop26h 31mUnited Airlines

Deal found 7/31

$277

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Decatur that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Decatur

DCA - DEC

DCADEC

Washington, D.C. Reagan-National

jue. 8/14

1:00 pm-6:03 pm

1 stop6h 03m

Decatur Arpt

lun. 8/18

9:45 am-5:01 pm

1 stop6h 16m

$254

BaltimoreDecatur

BWI - DEC

BWIDEC

Baltimore/Washington

vie. 9/26

5:20 pm-8:51 am

1 stop16h 31m

Decatur Arpt

dom. 9/28

6:55 pm-9:22 pm

1 stop25h 27m

$394

BaltimoreDecatur

BWI - DEC

BWIDEC

Baltimore/Washington

dom. 9/14

6:15 am-5:59 pm

1 stop12h 44m

$217

Washington, D.C.Decatur

DCA - DEC

DCADEC

Washington, D.C. Reagan-National

dom. 9/14

7:25 am-8:56 am

1 stop26h 31m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Best time to book a flight from Washington, D.C. to Decatur

Have a flexible travel schedule? Discover the best time to fly to Decatur from Washington, D.C. 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 Washington, D.C. to Decatur

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Decatur

Get a feel of what it's like to fly with United Airlines from Washington, D.C. to Decatur by reading reviews from past customers. 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 Washington, D.C.?
Located just 4.7 mi from the city center, Decatur Arpt is the airport most travelers will use when flying to Decatur from Washington, D.C.. Booking flights from Washington, D.C. to Decatur Arpt (DEC) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. from 1 airline.
What is the cheapest airline to fly from Washington, D.C. to Decatur, Illinois round-trip?
Flying on United Airlines is currently your cheapest option to Decatur, Illinois, with prices starting at $254.
Can I find deals for flights from Washington, D.C. to Decatur that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Decatur flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Decatur?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Decatur.
Can I find deals for business class flights from Washington, D.C. to Decatur?
Yes. Cheapflights offers flight deals from Washington, D.C. 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.

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Top airline flying from Washington, D.C. to Decatur

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$323	Average$459	FlexibilityNo cancel fee	On-time69%

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$217+ Cheap flights from Washington, D.C. (WAS) to Decatur, IL (DEC)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Decatur with Cheapflights

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Cheap flight deals from Washington, D.C. to Decatur

Round-trip from

One-way from

Find flight deals from Washington, D.C. to Decatur

Cheapest flights from Washington, D.C. to DecaturExplore the most affordable flight options available from Washington, D.C. to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

Explore the most affordable flight options available from Washington, D.C. to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Decatur that are best for you.

Best time to book a flight from Washington, D.C. to Decatur

Have a flexible travel schedule? Discover the best time to fly to Decatur from Washington, D.C. with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Decatur

Reviews of airlines servicing Decatur

Get a feel of what it's like to fly with United Airlines from Washington, D.C. to Decatur by reading reviews from past customers. 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 Washington, D.C. 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 Washington, D.C.?

What is the cheapest airline to fly from Washington, D.C. to Decatur, Illinois round-trip?

Can I find deals for flights from Washington, D.C. to Decatur that include hotel bookings?

How can I find direct flights from Washington, D.C. to Decatur?

Can I find deals for business class flights from Washington, D.C. to Decatur?

Traveling to a place near Decatur?

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Alternative routes for Washington, D.C. to Decatur

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Top airline flying from Washington, D.C. to Decatur

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Travel Smart

Cheapest flights from Washington, D.C. to Decatur
Explore the most affordable flight options available from Washington, D.C. to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.