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Cheap flights from Washington, D.C. to Decatur from $309

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Decatur departing on 7/6. 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

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Find the cheapest flights from Washington, D.C. to Decatur

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
1:00 pm - 5:56 pm
DCA
-
DEC
5h 56m
1 stop
United Airlines Logo
9:37 am - 5:12 pm
DEC
-
DCA
6h 35m
1 stop
$374United Airlines
Sat, May 30 - Wed, Jun 3
United Airlines Logo
1:00 pm - 5:56 pm
DCA
-
DEC
5h 56m
1 stop
United Airlines Logo
9:37 am - 3:52 pm
DEC
-
DCA
5h 15m
1 stop
$394United Airlines
Sat, May 30 - Wed, Jun 3
United Airlines Logo
2:00 pm - 5:57 pm
DCA
-
DEC
4h 57m
1 stop
United Airlines Logo
7:37 pm - 2:15 pm
DEC
-
DCA
17h 38m
1 stop
$542United Airlines
Tue, Mar 31 - Sat, Apr 4
United Airlines Logo
6:30 am - 5:57 pm
DCA
-
DEC
12h 27m
1 stop
United Airlines Logo
7:20 pm - 3:38 pm
DEC
-
DCA
19h 18m
1 stop
$756United Airlines
Sun, Mar 29 - Tue, Mar 31
United Airlines Logo
3:35 pm - 8:58 am
BWI
-
DEC
18h 23m
1 stop
United Airlines Logo
7:20 pm - 9:39 am
DEC
-
BWI
13h 19m
1 stop
$944United Airlines
Sun, Mar 29 - Tue, Mar 31

United Airlines flights from Washington, D.C. to Decatur, Illinois

Our best United Airlines deals on Washington, D.C. to Decatur, Illinois flight tickets
United Airlines
May 30
DCA1:00 pmWashington, D.C. Reagan-National
5h 56m
1 stop
DEC5:56 pmDecatur Arpt
Jun 3
DEC9:37 amDecatur Arpt
6h 35m
1 stop
DCA5:12 pmWashington, D.C. Reagan-National
$374
United Airlines
May 30
DCA1:00 pmWashington, D.C. Reagan-National
5h 56m
1 stop
DEC5:56 pmDecatur Arpt
Jun 3
DEC9:37 amDecatur Arpt
5h 15m
1 stop
DCA3:52 pmWashington, D.C. Reagan-National
$394
United Airlines
Mar 31
DCA2:00 pmWashington, D.C. Reagan-National
4h 57m
1 stop
DEC5:57 pmDecatur Arpt
Apr 4
DEC7:37 pmDecatur Arpt
17h 38m
1 stop
DCA2:15 pmWashington, D.C. Reagan-National
$542

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 March 17, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Decatur, Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Decatur

DCA - DEC

DCADEC

Washington, D.C. Reagan-National

Sat 5/30

1:00 pm-5:56 pm

1 stop5h 56m

Decatur Arpt

Wed 6/3

9:37 am-5:12 pm

1 stop6h 35m

$374
Quickest round-trip

Washington, D.C.Decatur

DCA - DEC

DCADEC

Washington, D.C. Reagan-National

Sat 5/30

1:00 pm-5:56 pm

1 stop5h 56m

Decatur Arpt

Wed 6/3

9:37 am-3:52 pm

1 stop5h 15m

$394

Washington, D.C.Decatur

DCA - DEC

DCADEC

Washington, D.C. Reagan-National

Tue 3/31

2:00 pm-5:57 pm

1 stop4h 57m

Decatur Arpt

Sat 4/4

7:37 pm-2:15 pm

1 stop17h 38m

$542

Washington, D.C.Decatur

DCA - DEC

DCADEC

Washington, D.C. Reagan-National

Sun 3/29

6:30 am-5:57 pm

1 stop12h 27m

Decatur Arpt

Tue 3/31

7:20 pm-3:38 pm

1 stop19h 18m

$756

BaltimoreDecatur

BWI - DEC

BWIDEC

Baltimore/Washington

Sun 3/29

3:35 pm-8:58 am

1 stop18h 23m

Decatur Arpt

Tue 3/31

7:20 pm-9:39 am

1 stop13h 19m

$944
Cheapest one-way
Quickest one-way

Washington, D.C.Decatur

DCA - DEC

DCADEC

Washington, D.C. Reagan-National

Mon 7/6

11:57 am-5:56 pm

1 stop6h 59m

$309

Washington, D.C.Decatur

DCA - DEC

DCADEC

Washington, D.C. Reagan-National

Mon 7/6

8:30 am-5:56 pm

2 stops10h 26m

$573

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Decatur from

How to get the cheapest flight ticket from Washington, D.C. to Decatur, Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Washington, D.C. to Decatur Arpt?

United Airlines is the most popular carrier operating from Washington, D.C. to Decatur Arpt

What airlines fly to Decatur, Illinois?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Decatur, Illinois from Washington, D.C. according to our data. American Airlines is the first choice among our users, with 66% of people opting to fly with this airline when traveling to Decatur, Illinois. Keep in mind that there are 3 different airlines that fly to Decatur, Illinois on a routine basis, so you have a few additional options to choose from.

When to book flights from Washington, D.C. to Decatur, Illinois

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Decatur, Illinois according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Decatur, Illinois (WAS to DEC) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Decatur, Illinois

Fastest flight time

4h 57m

Direct flights

None
The fastest flight from Washington, D.C. to Decatur, Illinois takes 4h 57m
There are no direct flights from Washington, D.C. to Decatur, Illinois. There are no popular flight routes from Washington, D.C. to Decatur, Illinois.
Search flight deals

  • How far is Washington, D.C. to Decatur Arpt by plane?

    A flight from Washington, D.C. to Decatur Arpt will travel around 639.0 mi. Flights usually cover this in 4h 57m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Washington, D.C. to Decatur Arpt Airport?

    Prices for flights from Washington, D.C. to Decatur Arpt Airport refresh daily.

  • How old do you have to be to fly from Washington, D.C. 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 Washington, D.C. to Decatur Arpt Airport.

  • What documentation or ID do you need to fly to Decatur Arpt Airport?

    The necessary travel and health documents for your Decatur Arpt Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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 Washington, D.C. to Decatur?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Decatur from Washington, D.C..

Can I find flights from Washington, D.C. to Decatur with flexible booking policies on momondo?

momondo does allow users to show only those flights to Decatur from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington, D.C. to Decatur?

Once you have performed a search for Washington, D.C. to Decatur flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to Decatur right now. Can momondo alert me if prices change?

Price alerts on flights to Decatur from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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