When did momondo last update prices for flights from Decatur Arpt Airport to Seattle/Tacoma Intl Airport?

Prices for flights from Decatur Arpt Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

How old do you have to be to fly from Decatur Arpt Airport to Seattle/Tacoma Intl 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 Decatur Arpt Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$281 Cheap Flights from Decatur, Illinois to Seattle in 2026/27

Find the cheapest flights from Decatur, Illinois to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:31 am - 4:18 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

9h 47m1 stop Chicago O'Hare Intl

11:44 pm - 8:43 amSEA Seattle/Tacoma Intl-DEC Decatur Arpt

6h 59m1 stop Chicago O'Hare Intl

$421United Airlines

Wed, Dec 16 - Wed, Dec 23

8:31 am - 9:01 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

14h 30m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

11:44 pm - 8:43 amSEA Seattle/Tacoma Intl-DEC Decatur Arpt

6h 59m1 stop Chicago O'Hare Intl

$426United Airlines

Wed, Dec 16 - Wed, Dec 23

9:25 am - 4:03 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

8h 38m1 stop Chicago O'Hare Intl

7:00 am - 6:06 pmSEA Seattle/Tacoma Intl-DEC Decatur Arpt

9h 06m1 stop Chicago O'Hare Intl

$452United Airlines

Fri, Jan 8 - Tue, Jan 12

9:25 am - 9:02 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

13h 37m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

7:00 am - 6:06 pmSEA Seattle/Tacoma Intl-DEC Decatur Arpt

9h 06m1 stop Chicago O'Hare Intl

$458United Airlines

Fri, Jan 8 - Tue, Jan 12

9:25 am - 6:12 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

10h 47m2 stops Chicago O'Hare Intl Denver Intl

5:00 am - 6:06 pmSEA Seattle/Tacoma Intl-DEC Decatur Arpt

11h 06m2 stops Denver Intl Chicago O'Hare Intl

$468United Airlines

Fri, Jan 8 - Tue, Jan 12

9:10 am - 3:32 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

8h 22m1 stop Chicago O'Hare Intl

4:39 pm - 8:09 amSEA Seattle/Tacoma Intl-DEC Decatur Arpt

13h 30m2 stops Los Angeles Chicago O'Hare Intl

$484United Airlines

Sun, Nov 22 - Thu, Nov 26

9:10 am - 9:50 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

14h 40m2 stops Chicago O'Hare Intl Los Angeles

4:39 pm - 8:09 amSEA Seattle/Tacoma Intl-DEC Decatur Arpt

13h 30m2 stops Los Angeles Chicago O'Hare Intl

$489United Airlines

Sun, Nov 22 - Thu, Nov 26

6:57 pm - 7:06 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

26h 09m1 stop Chicago O'Hare Intl

7:00 am - 6:06 pmSEA Seattle/Tacoma Intl-DEC Decatur Arpt

9h 06m1 stop Chicago O'Hare Intl

$519United Airlines

Wed, Dec 16 - Fri, Jan 15

8:31 am - 11:44 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

17h 13m2 stops Chicago O'Hare Intl San Francisco

7:00 am - 6:06 pmSEA Seattle/Tacoma Intl-DEC Decatur Arpt

9h 06m1 stop Chicago O'Hare Intl

$529United Airlines

Wed, Dec 16 - Fri, Jan 15

9:25 am - 9:02 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

13h 37m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

7:00 am - 6:06 pmSEA Seattle/Tacoma Intl-DEC Decatur Arpt

9h 06m1 stop Chicago O'Hare Intl

$530United Airlines

Wed, Jan 6 - Sat, Jan 9

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United Airlines flights from Decatur, Illinois to Seattle

Our best United Airlines deals on Decatur, Illinois to Seattle flight tickets

United Airlines

Dec 16

DEC8:31 amDecatur Arpt

9h 47m

1 stop

SEA4:18 pmSeattle/Tacoma Intl

Dec 23

SEA11:44 pmSeattle/Tacoma Intl

6h 59m

1 stop

DEC8:43 amDecatur Arpt

$421

United Airlines

Dec 16

DEC8:31 amDecatur Arpt

14h 30m

2 stops

SEA9:01 pmSeattle/Tacoma Intl

Dec 23

SEA11:44 pmSeattle/Tacoma Intl

6h 59m

1 stop

DEC8:43 amDecatur Arpt

$426

United Airlines

Jan 8

DEC9:25 amDecatur Arpt

8h 38m

1 stop

SEA4:03 pmSeattle/Tacoma Intl

Jan 12

SEA7:00 amSeattle/Tacoma Intl

9h 06m

1 stop

DEC6:06 pmDecatur Arpt

$452

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Wed 12/16

8:31 am-4:18 pm

1 stop9h 47m

Seattle/Tacoma Intl

Wed 12/23

11:44 pm-8:43 am

1 stop6h 59m

$421

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Wed 12/16

8:31 am-9:01 pm

2 stops14h 30m

Seattle/Tacoma Intl

Wed 12/23

11:44 pm-8:43 am

1 stop6h 59m

$426

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Fri 1/8

9:25 am-4:03 pm

1 stop8h 38m

Seattle/Tacoma Intl

Tue 1/12

7:00 am-6:06 pm

1 stop9h 06m

$452

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Fri 1/8

9:25 am-9:02 pm

2 stops13h 37m

Seattle/Tacoma Intl

Tue 1/12

7:00 am-6:06 pm

1 stop9h 06m

$458

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Fri 1/8

9:25 am-6:12 pm

2 stops10h 47m

Seattle/Tacoma Intl

Tue 1/12

5:00 am-6:06 pm

2 stops11h 06m

$468

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Sun 11/22

9:10 am-3:32 pm

1 stop8h 22m

Seattle/Tacoma Intl

Thu 11/26

4:39 pm-8:09 am

2 stops13h 30m

$484

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Sun 11/22

9:10 am-9:50 pm

2 stops14h 40m

Seattle/Tacoma Intl

Thu 11/26

4:39 pm-8:09 am

2 stops13h 30m

$489

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Wed 12/16

6:57 pm-7:06 pm

1 stop26h 09m

Seattle/Tacoma Intl

Fri 1/15

7:00 am-6:06 pm

1 stop9h 06m

$519

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Wed 12/16

8:31 am-11:44 pm

2 stops17h 13m

Seattle/Tacoma Intl

Fri 1/15

7:00 am-6:06 pm

1 stop9h 06m

$529

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Wed 1/6

9:25 am-9:02 pm

2 stops13h 37m

Seattle/Tacoma Intl

Sat 1/9

7:00 am-6:06 pm

1 stop9h 06m

$530

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

How to get the cheapest flight ticket from Decatur, Illinois to Seattle

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 Seattle/Tacoma Intl?

United Airlines is the most popular carrier operating from Decatur Arpt to Seattle/Tacoma Intl

When to book flights from Decatur, Illinois to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Decatur, Illinois to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Decatur, Illinois to Seattle (DEC to SEA) flight deals and tips

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

Best Price Found	$281
Fastest flight time	8h 38m
Direct flights	None

The best one-way flight to Seattle from Decatur, Illinois in the past 72 hours is $281. The best round-trip flight deal from Decatur, Illinois to Seattle found on momondo in the last 72 hours is $421.

The fastest flight from Decatur, Illinois to Seattle takes 8h 38m

There are no direct flights from Decatur, Illinois to Seattle. There are no popular flight routes from Decatur, Illinois to Seattle.

Search flight deals

Frequently asked questions about flying from Decatur, Illinois to Seattle

How far is Decatur Arpt to Seattle/Tacoma Intl by plane?
A flight from Decatur Arpt to Seattle/Tacoma Intl will travel around 1734.6 mi. Typically, this will take 8h 38m by plane in normal conditions.
When did momondo last update prices for flights from Decatur Arpt Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Decatur Arpt Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How old do you have to be to fly from Decatur Arpt Airport to Seattle/Tacoma Intl 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 Decatur Arpt Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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Kent

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Why use momondo?

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

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

Yes. All flights to Seattle from Decatur on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Decatur to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Decatur to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.