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 WA to DEC?

When flying from State of Washington 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.

What airport do you fly into for flights to Decatur from Washington?

If you book a flight to Decatur from Washington, you will be flying to Decatur Arpt, which is the city’s only airport. Decatur Arpt (DEC) is located 4.7 mi from the center of Decatur.

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

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

How can I find direct flights from Washington to Decatur?

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

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

Yes. Cheapflights offers flight deals from Washington 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.

$384+ Flights from Washington to Decatur, IL

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Cheap flight deals from Washington to Decatur

Round-trip from	$384 (United Airlines)

From Washington to Decatur Arpt

Search Deals

Find flight deals from Washington to Decatur

Cheapest flights from Washington to Decatur
Explore the most affordable flight options available from Washington to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

Wed 8/277:00 amSEA - DEC

1 stop8h 59mUnited Airlines

Wed 9/39:30 amDEC - SEA

2 stops15h 29mUnited Airlines

Deal found 7/30

$384

Wed 10/2911:59 pmPDX - DEC

1 stop6h 49mUnited Airlines

Sat 11/17:08 pmDEC - PDX

1 stop30h 27mUnited Airlines

Deal found 7/31

$414

Best flights from Washington to Decatur
Discover carefully curated flight deals from Washington to Decatur that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2025.

Wed 8/277:00 amSEA - DEC

1 stop8h 59mUnited Airlines

Wed 9/39:30 amDEC - SEA

2 stops15h 29mUnited Airlines

Deal found 7/30

$384

Wed 10/2911:59 pmPDX - DEC

1 stop6h 49mUnited Airlines

Sat 11/17:08 pmDEC - PDX

1 stop30h 27mUnited Airlines

Deal found 7/31

$414

Last-minute flights from Washington to Decatur
Discover last-minute flight deals from Washington to Decatur. Data last updated August 1, 2025 and is based on user searches.

Sun 8/1012:20 amSEA - DEC

1 stop15h 43mUnited Airlines

Tue 9/29:42 amDEC - SEA

3 stops15h 10mUnited Airlines

Deal found 7/31

$569

Sat 8/1611:59 pmPDX - DEC

1 stop6h 49mUnited Airlines

Sat 8/239:42 amDEC - PDX

1 stop14h 43mUnited Airlines

Deal found 7/31

$429

Wed 8/277:00 amSEA - DEC

1 stop8h 59mUnited Airlines

Wed 9/39:30 amDEC - SEA

2 stops15h 29mUnited Airlines

Deal found 7/30

$384

Fly from

Fly to

Route

Depart

Return

Price

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Wed 8/27

7:00 am-5:59 pm

1 stop8h 59m

Decatur Arpt

Wed 9/3

9:30 am-10:59 pm

2 stops15h 29m

$384

PortlandDecatur

PDX - DEC

PDXDEC

Portland

Wed 10/29

11:59 pm-8:48 am

1 stop6h 49m

Decatur Arpt

Sat 11/1

7:08 pm-11:35 pm

1 stop30h 27m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from Washington to Decatur

Have a flexible travel schedule? Discover the best time to fly to Decatur from Washington 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 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 Washington 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 Washington?
If you book a flight to Decatur from Washington, you will be flying to Decatur Arpt, which is the city’s only airport. Decatur Arpt (DEC) is located 4.7 mi from the center of Decatur.
Can I find deals for flights from Washington to Decatur that include hotel bookings?
Yes. In addition to deals on Washington to Decatur flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington to Decatur?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Decatur.
Can I find deals for business class flights from Washington to Decatur?
Yes. Cheapflights offers flight deals from Washington 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

Mattoon

Effingham

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$384+ Cheap flights from Washington 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington 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 Washington to Decatur

Keep the following information in mind while searching for Washington to Decatur flight deals. Data was last updated August 1, 2025.

Round-trip from

Find flight deals from Washington to Decatur

Cheapest flights from Washington to DecaturExplore the most affordable flight options available from Washington to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

Explore the most affordable flight options available from Washington to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Washington to Decatur

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

Cheapflights Insights

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

Reviews of airlines servicing Decatur

Peruse reviews from past customers who have flown with United Airlines from Washington 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 Washington 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?

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

How can I find direct flights from Washington to Decatur?

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

Traveling to a place near Decatur?

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Alternative routes for Washington to Decatur

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Cheapest flights from Washington to Decatur
Explore the most affordable flight options available from Washington to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.