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Decatur

$267+ Cheap flights from Washington 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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEC
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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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 September 15, 2025.

Round-trip from

$374
(United Airlines)

One-way from

$267
(United Airlines)
From Washington to Decatur Arpt
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One-way flight from Washington to Decatur Arpt
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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 September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:59 pmPDX - DEC
1 stop6h 49mUnited Airlines
Sat 11/17:08 pmDEC - PDX
1 stop19h 40mUnited Airlines
Deal found 9/15$434
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:00 amSEA - DEC
1 stop9h 04mUnited Airlines
Mon 10/66:55 pmDEC - SEA
1 stop25h 54mUnited Airlines
Deal found 9/14$435
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1011:40 pmSEA - DEC
1 stop7h 11mUnited Airlines
Sun 10/126:55 pmDEC - SEA
1 stop16h 48mUnited Airlines
Deal found 9/13$504
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2911:59 pmPDX - DEC
1 stop6h 52mUnited Airlines
Fri 10/39:38 amDEC - PDX
2 stops25h 52mUnited Airlines
Deal found 9/14$522
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/138:35 amPDX - DEC
1 stop22h 16mUnited Airlines
Wed 10/159:38 amDEC - PDX
2 stops15h 07mUnited Airlines
Deal found 9/14$523
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:00 amSEA - DEC
1 stop9h 04mUnited Airlines
Sun 9/289:38 amDEC - SEA
1 stop26h 05mUnited Airlines
Deal found 9/15$525
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2710:53 amSEA - DEC
1 stop19h 55mUnited Airlines
Sun 11/307:08 pmDEC - SEA
1 stop25h 44mUnited Airlines
Deal found 9/14$656

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Decatur 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, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Washington to Decatur that are best for you.

Fly from

Washington

Fly to

Decatur

Route

Depart

Return

Price

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Tue 3/3

11:50 pm-8:52 am

1 stop7h 02m

Decatur Arpt

Sat 3/7

3:20 pm-10:29 pm

1 stop9h 09m

$374

PortlandDecatur

PDX - DEC

PDXDEC

Portland

Sat 3/7

11:55 pm-9:51 am

1 stop7h 56m

Decatur Arpt

Tue 3/10

3:20 pm-10:08 pm

1 stop8h 48m

$374

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-12:48 pm

1 stop19h 40m

$434

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Thu 10/2

7:00 am-6:04 pm

1 stop9h 04m

Decatur Arpt

Mon 10/6

6:55 pm-6:49 pm

1 stop25h 54m

$435

PortlandDecatur

PDX - DEC

PDXDEC

Portland

Fri 10/17

2:15 pm-8:51 am

1 stop16h 36m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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.

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?

    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.

  • How long is the flight from State of Washington to Decatur, Illinois?

    A quick flight from State of Washington to Decatur, Illinois can take about 7h 02m. United Airlines provides one of the quickest options available for as low as $374. Airlines will cover a distance of 1736 mi.

  • 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

Traveling to a place near Decatur?

Book flights to Decatur if you plan to visit one of these locations
Mattoon
Effingham

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Top airline flying from Washington to Decatur

Discover the top airline that operate flights from Washington to Decatur. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$424Average$764FlexibilityNo cancel feeOn-time69%

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