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Cheap flights from Decatur, Illinois to Washington from $251

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Decatur, Illinois to Washington departing on 1/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Decatur, Illinois to Washington

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
9:42 am - 4:25 pm
DEC
-
SEA
8h 43m1 stop
United Airlines Logo
7:00 am - 5:51 pm
SEA
-
DEC
8h 51m1 stop
$394United Airlines
Wed, Apr 15 - Sat, Apr 18
United Airlines Logo
9:49 am - 9:49 pm
DEC
-
PDX
14h 00m2 stops
United Airlines Logo
7:00 am - 6:01 pm
PDX
-
DEC
9h 01m1 stop
$404United Airlines
Fri, Jan 9 - Fri, Feb 6
United Airlines Logo
9:50 am - 10:13 pm
DEC
-
SEA
14h 23m2 stops
United Airlines Logo
7:00 am - 5:54 pm
SEA
-
DEC
8h 54m1 stop
$404United Airlines
Fri, Feb 27 - Mon, Mar 2
United Airlines Logo
9:42 am - 11:36 pm
DEC
-
SEA
15h 54m3 stops
United Airlines Logo
11:59 pm - 8:51 am
SEA
-
DEC
6h 52m1 stop
$409United Airlines
Wed, Apr 15 - Sun, Apr 19
United Airlines Logo
7:15 pm - 10:43 pm
DEC
-
SEA
29h 28m1 stop
United Airlines Logo
7:29 pm - 8:52 am
SEA
-
DEC
11h 23m2 stops
$414United Airlines
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
9:50 am - 11:55 am
DEC
-
PDX
28h 05m1 stop
United Airlines Logo
11:59 pm - 8:52 am
PDX
-
DEC
6h 53m1 stop
$424United Airlines
Fri, Feb 20 - Tue, Feb 24
United Airlines Logo
7:15 pm - 12:38 pm
DEC
-
PDX
19h 23m2 stops
United Airlines Logo
7:00 am - 5:54 pm
PDX
-
DEC
8h 54m1 stop
$434United Airlines
Fri, Feb 20 - Tue, Feb 24
United Airlines Logo
9:50 am - 12:38 pm
DEC
-
PDX
28h 48m2 stops
United Airlines Logo
7:57 pm - 8:52 am
PDX
-
DEC
10h 55m2 stops
$439United Airlines
Fri, Feb 20 - Tue, Feb 24
United Airlines Logo
7:15 pm - 1:49 pm
DEC
-
SEA
20h 34m2 stops
United Airlines Logo
7:29 pm - 8:52 am
SEA
-
DEC
11h 23m2 stops
$439United Airlines
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
9:50 am - 11:55 am
DEC
-
PDX
28h 05m1 stop
United Airlines Logo
7:00 am - 5:54 pm
PDX
-
DEC
8h 54m1 stop
$440United Airlines
Mon, Feb 16 - Sat, Feb 21

United Airlines flights from Decatur, Illinois to State of Washington

Our best United Airlines deals on Decatur, Illinois to State of Washington flight tickets
United Airlines
Apr 15
DEC9:42 amDecatur Arpt
8h 43m
1 stop
SEA4:25 pmSeattle/Tacoma Intl
Apr 18
SEA7:00 amSeattle/Tacoma Intl
8h 51m
1 stop
DEC5:51 pmDecatur Arpt
$394
Find similar
United Airlines
Feb 27
DEC9:50 amDecatur Arpt
14h 23m
2 stops
SEA10:13 pmSeattle/Tacoma Intl
Mar 2
SEA7:00 amSeattle/Tacoma Intl
8h 54m
1 stop
DEC5:54 pmDecatur Arpt
$404
Find similar
United Airlines
Feb 27
DEC9:50 amDecatur Arpt
13h 22m
2 stops
SEA9:12 pmSeattle/Tacoma Intl
Mar 2
SEA11:35 pmSeattle/Tacoma Intl
16h 19m
2 stops
DEC5:54 pmDecatur Arpt
$409
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Decatur, Illinois to State of Washington 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 December 18, 2025.
Use the filters below to find and compare flights from Decatur, Illinois to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Wed 4/15

9:42 am-4:25 pm

1 stop8h 43m

Seattle/Tacoma Intl

Sat 4/18

7:00 am-5:51 pm

1 stop8h 51m

$394

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Fri 1/9

9:49 am-9:49 pm

2 stops14h 00m

Portland

Fri 2/6

7:00 am-6:01 pm

1 stop9h 01m

$404

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Fri 2/27

9:50 am-10:13 pm

2 stops14h 23m

Seattle/Tacoma Intl

Mon 3/2

7:00 am-5:54 pm

1 stop8h 54m

$404

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Wed 4/15

9:42 am-11:36 pm

3 stops15h 54m

Seattle/Tacoma Intl

Sun 4/19

11:59 pm-8:51 am

1 stop6h 52m

$409

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Sat 2/14

7:15 pm-10:43 pm

1 stop29h 28m

Seattle/Tacoma Intl

Wed 2/18

7:29 pm-8:52 am

2 stops11h 23m

$414

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Fri 2/20

9:50 am-11:55 am

1 stop28h 05m

Portland

Tue 2/24

11:59 pm-8:52 am

1 stop6h 53m

$424

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Fri 2/20

7:15 pm-12:38 pm

2 stops19h 23m

Portland

Tue 2/24

7:00 am-5:54 pm

1 stop8h 54m

$434

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Fri 2/20

9:50 am-12:38 pm

2 stops28h 48m

Portland

Tue 2/24

7:57 pm-8:52 am

2 stops10h 55m

$439

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Sat 2/14

7:15 pm-1:49 pm

2 stops20h 34m

Seattle/Tacoma Intl

Wed 2/18

7:29 pm-8:52 am

2 stops11h 23m

$439

DecaturPortland

DEC - PDX

DECPDX

Decatur Arpt

Mon 2/16

9:50 am-11:55 am

1 stop28h 05m

Portland

Sat 2/21

7:00 am-5:54 pm

1 stop8h 54m

$440

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to Washington from

How to get the cheapest flight ticket from Decatur, Illinois to State of Washington

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 Decatur Arpt to Washington?

United Airlines is the most popular carrier operating from Decatur Arpt to Washington

Cheap Decatur, Illinois to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Decatur, Illinois to State of Washington

Fastest flight time

8h 43m

Direct flights

None
The fastest flight from Decatur, Illinois to State of Washington takes 8h 43m
There are no direct flights from Decatur, Illinois to State of Washington. There are no popular flight routes from Decatur, Illinois to State of Washington.
Search flight deals

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

    Prices for flights from Decatur Arpt Airport to Washington are refreshed on a daily basis.

  • How old do you have to be to fly from Decatur Arpt Airport to Washington?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Decatur Arpt Airport to Washington.

  • What documentation or ID do you need to fly to Washington?

    The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Decatur to Washington?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Decatur to Washington. momondo saves you time and could save you money on your trip.

Can I find flights from Decatur to Washington with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Washington from Decatur with this policy.

How can momondo help me find flights from Decatur to Washington?

Once you have performed a search for Decatur to Washington 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 Decatur to Washington right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Decatur to Washington now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington and let you know when they change.

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