How long is the flight from Washington, D.C. to Decatur, Illinois?

Airlines like United Airlines fly from Washington, D.C. to Decatur, Illinois in about 5h 01m. The time it takes to get you to your destination can typically vary by up to . Washington, D.C. and Decatur, Illinois are separated by a distance of 635 mi.

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 WAS to DEC?

When flying from Washington, D.C. to Decatur, Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Washington, D.C.-Decatur, Illinois flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-Decatur, Illinois flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Decatur, Illinois flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C.-Decatur, Illinois flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Decatur, Illinois flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 0 different airlines.

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.

$198+ Flights from Washington, D.C. to Decatur, IL

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

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 December 18, 2025.

Tue 12/301:00 pmDCA - DEC

1 stop5h 59mUnited Airlines

Sat 1/39:44 amDEC - DCA

1 stop6h 15mUnited Airlines

Deal found 12/15

$435

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 December 18, 2025.

Fri 1/232:00 pmDCA - DEC

1 stop5h 01mUnited Airlines

Sun 1/259:49 amDEC - DCA

1 stop6h 10mUnited Airlines

Deal found 12/16

$334

Thu 1/222:00 pmDCA - DEC

1 stop5h 01mUnited Airlines

Sun 1/259:49 amDEC - DCA

1 stop6h 10mUnited Airlines

Deal found 12/15

$334

Thu 1/2212:00 pmDCA - DEC

1 stop7h 01mUnited Airlines

Mon 1/269:49 amDEC - DCA

1 stop4h 43mUnited Airlines

Deal found 12/16

$334

Fri 1/2312:00 pmDCA - DEC

1 stop7h 01mUnited Airlines

Mon 1/269:49 amDEC - DCA

1 stop6h 10mUnited Airlines

Deal found 12/16

$334

Fri 1/162:00 pmDCA - DEC

1 stop5h 01mUnited Airlines

Sun 1/189:49 amDEC - DCA

1 stop6h 10mUnited Airlines

Deal found 12/15

$334

Thu 1/11:00 pmDCA - DEC

1 stop5h 59mUnited Airlines

Mon 1/59:44 amDEC - DCA

1 stop4h 48mUnited Airlines

Deal found 12/17

$344

Thu 1/16:15 amBWI - DEC

1 stop12h 44mUnited Airlines

Mon 1/59:44 amDEC - BWI

1 stop6h 14mUnited Airlines

Deal found 12/17

$350

Thu 1/225:18 pmBWI - DEC

1 stop25h 43mUnited Airlines

Sun 1/259:49 amDEC - BWI

1 stop27h 22mUnited Airlines

Deal found 12/16

$376

Thu 1/2210:05 amBWI - DEC

1 stop8h 56mUnited Airlines

Mon 1/267:09 pmDEC - BWI

1 stop18h 02mUnited Airlines

Deal found 12/16

$376

Thu 1/155:18 pmBWI - DEC

1 stop16h 47mUnited Airlines

Sat 1/177:09 pmDEC - BWI

1 stop25h 12mUnited Airlines

Deal found 12/17

$385

Fri 1/2310:05 amBWI - DEC

1 stop8h 56mUnited Airlines

Mon 1/269:49 amDEC - BWI

1 stop10h 32mUnited Airlines

Deal found 12/16

$385

Wed 1/710:05 amBWI - DEC

1 stop8h 56mUnited Airlines

Sat 1/107:09 pmDEC - BWI

1 stop25h 12mUnited Airlines

Deal found 12/15

$405

Tue 12/301:00 pmDCA - DEC

1 stop5h 59mUnited Airlines

Sat 1/39:44 amDEC - DCA

1 stop6h 15mUnited Airlines

Deal found 12/15

$435

Thu 1/1512:00 pmDCA - DEC

1 stop7h 01mUnited Airlines

Sat 1/177:09 pmDEC - DCA

1 stop14h 47mUnited Airlines

Deal found 12/17

$440

Thu 2/196:30 amBWI - DEC

1 stop12h 24mUnited Airlines

Sun 2/229:50 amDEC - BWI

1 stop10h 27mUnited Airlines

Deal found 12/18

$441

Last-minute flights from Washington, D.C. to Decatur
Discover last-minute flight deals from Washington, D.C. to Decatur. Data last updated December 18, 2025 and is based on user searches.

Tue 12/301:00 pmDCA - DEC

1 stop5h 59mUnited Airlines

Sat 1/39:44 amDEC - DCA

1 stop6h 15mUnited Airlines

Deal found 12/15

$435

Thu 1/11:00 pmDCA - DEC

1 stop5h 59mUnited Airlines

Mon 1/59:44 amDEC - DCA

1 stop4h 48mUnited Airlines

Deal found 12/17

$344

Thu 1/16:15 amBWI - DEC

1 stop12h 44mUnited Airlines

Mon 1/59:44 amDEC - BWI

1 stop6h 14mUnited Airlines

Deal found 12/17

$350

Wed 1/710:05 amBWI - DEC

1 stop8h 56mUnited Airlines

Sat 1/107:09 pmDEC - BWI

1 stop25h 12mUnited Airlines

Deal found 12/16

$405

Wed 1/71:00 pmDCA - DEC

1 stop6h 01mUnited Airlines

Sat 1/107:09 pmDEC - DCA

1 stop12h 50mUnited Airlines

Deal found 12/14

$450

Thu 1/1512:00 pmDCA - DEC

1 stop7h 01mUnited Airlines

Sat 1/177:09 pmDEC - DCA

1 stop14h 47mUnited Airlines

Deal found 12/17

$440

Fri 1/167:00 amDCA - DEC

2 stops12h 01mUnited Airlines

Sun 1/189:49 amDEC - DCA

1 stop6h 10mUnited Airlines

Deal found 12/15

$430

Thu 1/222:00 pmDCA - DEC

1 stop5h 01mUnited Airlines

Sun 1/259:49 amDEC - DCA

1 stop6h 10mUnited Airlines

Deal found 12/15

$334

Thu 1/225:18 pmBWI - DEC

1 stop25h 43mUnited Airlines

Sun 1/259:49 amDEC - BWI

1 stop27h 22mUnited Airlines

Deal found 12/16

$376

Fri 1/2310:05 amBWI - DEC

1 stop8h 56mUnited Airlines

Mon 1/269:49 amDEC - BWI

1 stop10h 32mUnited Airlines

Deal found 12/17

$385

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 December 18, 2025.

Sun 1/1810:05 amBWI - DEC

1 stop24h 00mUnited Airlines

Deal found 12/16

$198

Mon 1/1210:05 amBWI - DEC

1 stop8h 56mUnited Airlines

Deal found 12/16

$208

Sun 1/187:30 amDCA - DEC

1 stop26h 35mUnited Airlines

Deal found 12/15

$240

Mon 1/121:00 pmDCA - DEC

1 stop6h 01mUnited Airlines

Deal found 12/16

$244

Mon 1/1910:30 amDCA - DEC

1 stop8h 31mUnited Airlines

Deal found 12/15

$263

Wed 4/156:30 amBWI - DEC

1 stop27h 21mUnited Airlines

Deal found 12/16

$263

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

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$334 (United Airlines)
One-way from	$198 (United Airlines)

Provider with most accurate pricing for Washington, D.C. (WAS)-Decatur Arpt flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Decatur Arpt flights.

Search Deals

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

Search Deals

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

Search Deals

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

Fri 1/23

2:00 pm-6:01 pm

1 stop5h 01m

Decatur Arpt

Sun 1/25

9:49 am-4:59 pm

1 stop6h 10m

$334

Washington, D.C.Decatur

DCA - DEC

DCADEC

Washington, D.C. Reagan-National

Thu 1/22

2:00 pm-6:01 pm

1 stop5h 01m

Decatur Arpt

Sun 1/25

9:49 am-4:59 pm

1 stop6h 10m

$334

Washington, D.C.Decatur

DCA - DEC

DCADEC

Washington, D.C. Reagan-National

Thu 1/22

12:00 pm-6:01 pm

1 stop7h 01m

Decatur Arpt

Mon 1/26

9:49 am-3:32 pm

1 stop4h 43m

$334

Washington, D.C.Decatur

DCA - DEC

DCADEC

Washington, D.C. Reagan-National

Fri 1/23

12:00 pm-6:01 pm

1 stop7h 01m

Decatur Arpt

Mon 1/26

9:49 am-4:59 pm

1 stop6h 10m

$334

Washington, D.C.Decatur

DCA - DEC

DCADEC

Washington, D.C. Reagan-National

Fri 1/16

2:00 pm-6:01 pm

1 stop5h 01m

Decatur Arpt

Sun 1/18

9:49 am-4:59 pm

1 stop6h 10m

$334

Washington, D.C.Decatur

DCA - DEC

DCADEC

Washington, D.C. Reagan-National

Thu 1/1

1:00 pm-5:59 pm

1 stop5h 59m

Decatur Arpt

Mon 1/5

9:44 am-3:32 pm

1 stop4h 48m

$344

BaltimoreDecatur

BWI - DEC

BWIDEC

Baltimore/Washington

Thu 1/1

6:15 am-5:59 pm

1 stop12h 44m

Decatur Arpt

Mon 1/5

9:44 am-4:58 pm

1 stop6h 14m

$350

BaltimoreDecatur

BWI - DEC

BWIDEC

Baltimore/Washington

Thu 1/22

5:18 pm-6:01 pm

1 stop25h 43m

Decatur Arpt

Sun 1/25

9:49 am-2:11 pm

1 stop27h 22m

$376

BaltimoreDecatur

BWI - DEC

BWIDEC

Baltimore/Washington

Thu 1/22

10:05 am-6:01 pm

1 stop8h 56m

Decatur Arpt

Mon 1/26

7:09 pm-2:11 pm

1 stop18h 02m

$376

BaltimoreDecatur

BWI - DEC

BWIDEC

Baltimore/Washington

Thu 1/15

5:18 pm-9:05 am

1 stop16h 47m

Decatur Arpt

Sat 1/17

7:09 pm-9:21 pm

1 stop25h 12m

$385

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 22 results

Most accurate provider: When it comes to deals on Washington, D.C.-Decatur, Illinois flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-Decatur, Illinois flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Decatur, Illinois flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C.-Decatur, Illinois flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Decatur, Illinois flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

What is the cheapest month to book a flight from Washington, D.C. to Decatur, Illinois?

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Decatur, Illinois (average of $154). Flying from Washington, D.C. to Decatur, Illinois in May is currently the most expensive (average of $383). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 0 different airlines.
How long is the flight from Washington, D.C. to Decatur, Illinois?
Airlines like United Airlines fly from Washington, D.C. to Decatur, Illinois in about 5h 01m. The time it takes to get you to your destination can typically vary by up to . Washington, D.C. and Decatur, Illinois are separated by a distance of 635 mi.
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.
What is the cheapest month to book a flight from Washington, D.C. to Decatur, Illinois?
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Decatur, Illinois (average of $154). Flying from Washington, D.C. to Decatur, Illinois in May is currently the most expensive (average of $383). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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$198+ 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 1/18. 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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3. Compare prices and book

Cheap 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 December 18, 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 December 18, 2025.

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

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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

What is the cheapest month to book a flight from Washington, D.C. to Decatur, Illinois?

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.?

How long is the flight from Washington, D.C. to Decatur, Illinois?

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?

What is the cheapest month to book a flight from Washington, D.C. to Decatur, Illinois?

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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 December 18, 2025.