How long does it take to fly to Decatur, Illinois?

The flight from State of Washington to Decatur, Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Seattle (a popular airport in State of Washington) to Peoria, Illinois (the most popular airport in Decatur, Illinois), then the flight time is 6h 03m on average. If you fly from Spokane (another popular airport in State of Washington) to Peoria, Illinois, then the average flight time is 9h 38m.

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

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

How many operators does momondo search for flights from Washington to Decatur Arpt Airport?

As of December 2025, there is 1 operator available to choose from for flights from Washington to Decatur Arpt Airport.

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

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 Washington 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.

$263 Cheap Flights from Washington to Decatur in 2025/26

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Find the cheapest flights from Washington to Decatur

Round-trip

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 6:01 pm

SEA

DEC

9h 01m1 stop

9:49 am - 4:01 pm

DEC

SEA

8h 12m1 stop

$394United Airlines

Tue, Jan 6 - Sun, Jan 11

7:00 am - 6:01 pm

SEA

DEC

9h 01m1 stop

7:09 pm - 10:43 pm

DEC

SEA

29h 34m1 stop

$404United Airlines

Tue, Jan 6 - Sat, Jan 10

7:00 am - 6:01 pm

PDX

DEC

9h 01m1 stop

9:49 am - 9:12 pm

DEC

PDX

13h 23m2 stops

$404United Airlines

Sat, Jan 17 - Wed, Jan 21

11:45 pm - 6:01 pm

SEA

DEC

16h 16m2 stops

9:49 am - 9:58 pm

DEC

SEA

14h 09m2 stops

$409United Airlines

Tue, Jan 6 - Sun, Jan 11

7:52 pm - 9:05 am

PDX

DEC

11h 13m2 stops

9:49 am - 9:12 pm

DEC

PDX

13h 23m2 stops

$409United Airlines

Sat, Jan 17 - Wed, Jan 21

11:45 pm - 6:01 pm

SEA

DEC

16h 16m2 stops

7:09 pm - 10:43 pm

DEC

SEA

29h 34m1 stop

$414United Airlines

Tue, Jan 6 - Sat, Jan 10

7:00 am - 6:01 pm

SEA

DEC

9h 01m1 stop

9:49 am - 11:32 am

DEC

SEA

27h 43m1 stop

$420United Airlines

Wed, Jan 14 - Fri, Jan 16

7:00 am - 6:01 pm

PDX

DEC

9h 01m1 stop

9:49 am - 6:56 pm

DEC

PDX

11h 07m1 stop

$424United Airlines

Sat, Jan 17 - Wed, Jan 21

7:00 am - 6:01 pm

SEA

DEC

9h 01m1 stop

7:09 pm - 10:43 pm

DEC

SEA

29h 34m1 stop

$429United Airlines

Tue, Jan 6 - Sat, Jan 10

5:00 am - 6:01 pm

SEA

DEC

11h 01m2 stops

9:49 am - 11:32 am

DEC

SEA

27h 43m1 stop

$430United Airlines

Wed, Jan 14 - Fri, Jan 16

United Airlines flights from State of Washington to Decatur, Illinois

Our best United Airlines deals on State of Washington to Decatur, Illinois flight tickets

United Airlines

Jan 6

SEA7:00 amSeattle/Tacoma Intl

9h 01m

1 stop

DEC6:01 pmDecatur Arpt

Jan 11

DEC9:49 amDecatur Arpt

8h 12m

1 stop

SEA4:01 pmSeattle/Tacoma Intl

$394

Find similar

United Airlines

Jan 6

SEA7:00 amSeattle/Tacoma Intl

9h 01m

1 stop

DEC6:01 pmDecatur Arpt

Jan 10

DEC7:09 pmDecatur Arpt

29h 34m

1 stop

SEA10:43 pmSeattle/Tacoma Intl

$404

Find similar

United Airlines

Jan 6

SEA11:45 pmSeattle/Tacoma Intl

16h 16m

2 stops

DEC6:01 pmDecatur Arpt

Jan 11

DEC9:49 amDecatur Arpt

14h 09m

2 stops

SEA9:58 pmSeattle/Tacoma Intl

$409

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Tue 1/6

7:00 am-6:01 pm

1 stop9h 01m

Decatur Arpt

Sun 1/11

9:49 am-4:01 pm

1 stop8h 12m

$394

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Tue 1/6

7:00 am-6:01 pm

1 stop9h 01m

Decatur Arpt

Sat 1/10

7:09 pm-10:43 pm

1 stop29h 34m

$404

PortlandDecatur

PDX - DEC

PDXDEC

Portland

Sat 1/17

7:00 am-6:01 pm

1 stop9h 01m

Decatur Arpt

Wed 1/21

9:49 am-9:12 pm

2 stops13h 23m

$404

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Tue 1/6

11:45 pm-6:01 pm

2 stops16h 16m

Decatur Arpt

Sun 1/11

9:49 am-9:58 pm

2 stops14h 09m

$409

PortlandDecatur

PDX - DEC

PDXDEC

Portland

Sat 1/17

7:52 pm-9:05 am

2 stops11h 13m

Decatur Arpt

Wed 1/21

9:49 am-9:12 pm

2 stops13h 23m

$409

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Tue 1/6

11:45 pm-6:01 pm

2 stops16h 16m

Decatur Arpt

Sat 1/10

7:09 pm-10:43 pm

1 stop29h 34m

$414

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Wed 1/14

7:00 am-6:01 pm

1 stop9h 01m

Decatur Arpt

Fri 1/16

9:49 am-11:32 am

1 stop27h 43m

$420

PortlandDecatur

PDX - DEC

PDXDEC

Portland

Sat 1/17

7:00 am-6:01 pm

1 stop9h 01m

Decatur Arpt

Wed 1/21

9:49 am-6:56 pm

1 stop11h 07m

$424

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Tue 1/6

7:00 am-6:01 pm

1 stop9h 01m

Decatur Arpt

Sat 1/10

7:09 pm-10:43 pm

1 stop29h 34m

$429

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Wed 1/14

5:00 am-6:01 pm

2 stops11h 01m

Decatur Arpt

Fri 1/16

9:49 am-11:32 am

1 stop27h 43m

$430

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How to get the cheapest flight ticket from State of Washington 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

Airlines

Other information

What is the cheapest airline that flies from Washington to Decatur Arpt?

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

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

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

Fastest flight time	8h 49m
Direct flights	None

The fastest flight from State of Washington to Decatur, Illinois takes 8h 49m

There are no direct flights from State of Washington to Decatur, Illinois. There are no popular flight routes from State of Washington to Decatur, Illinois.

Search flight deals

When did momondo last update prices for flights from Washington to Decatur Arpt Airport?
Prices for flights from Washington to Decatur Arpt Airport refresh daily.
How many operators does momondo search for flights from Washington to Decatur Arpt Airport?
As of December 2025, there is 1 operator available to choose from for flights from Washington to Decatur Arpt Airport.
How old do you have to be to fly from Washington to Decatur Arpt Airport?
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 Washington 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.

Effingham

Mattoon

Forsyth

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

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

Yes. momondo allows you to filter the results for Washington to Decatur flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Decatur from Washington.

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

If you are simply researching potential flights to Decatur, momondo offers a useful price alert feature which will track prices for flights to Decatur from Washington and alert you when they change.