How do I get Price Alerts for flights from Decatur, Illinois to Seattle?

Search flight deals from Decatur, Illinois to Seattle . While viewing offers you’ll have the option to create a Price Alert.

How can I save money on flights from Decatur, Illinois to Seattle with momondo?

With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

How does momondo find its flight prices?

We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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.

$395 Cheap Flights from Decatur, Illinois to Seattle in 2026

Find the cheapest flights from Decatur, Illinois to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:12 am - 9:41 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

14h 29m2 stops Chicago O'Hare Intl Los Angeles

11:00 pm - 7:37 amSEA Seattle/Tacoma Intl-DEC Decatur Arpt

6h 37m1 stop Chicago O'Hare Intl

$395United Airlines

Thu, Aug 20 - Thu, Aug 27

9:12 am - 7:14 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

12h 02m2 stops Chicago O'Hare Intl Los Angeles

4:30 pm - 7:37 amSEA Seattle/Tacoma Intl-DEC Decatur Arpt

13h 07m2 stops Los Angeles Chicago O'Hare Intl

$404United Airlines

Thu, Aug 20 - Thu, Aug 27

9:34 am - 3:54 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

8h 20m1 stop Chicago O'Hare Intl

7:00 am - 5:55 pmSEA Seattle/Tacoma Intl-DEC Decatur Arpt

8h 55m1 stop Chicago O'Hare Intl

$409United Airlines

Thu, Nov 26 - Mon, Nov 30

9:34 am - 8:56 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

13h 22m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

7:00 am - 5:55 pmSEA Seattle/Tacoma Intl-DEC Decatur Arpt

8h 55m1 stop Chicago O'Hare Intl

$415United Airlines

Thu, Nov 26 - Mon, Nov 30

9:12 am - 4:07 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

8h 55m1 stop Chicago O'Hare Intl

11:00 pm - 7:37 amSEA Seattle/Tacoma Intl-DEC Decatur Arpt

6h 37m1 stop Chicago O'Hare Intl

$497United Airlines

Thu, Aug 20 - Thu, Aug 27

9:12 am - 9:51 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

14h 39m2 stops Chicago O'Hare Intl Los Angeles

7:00 am - 6:43 pmSEA Seattle/Tacoma Intl-DEC Decatur Arpt

9h 43m1 stop Chicago O'Hare Intl

$509United Airlines

Mon, Sep 14 - Mon, Sep 21

9:12 am - 9:51 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

14h 39m2 stops Chicago O'Hare Intl Los Angeles

11:59 pm - 6:44 pmSEA Seattle/Tacoma Intl-DEC Decatur Arpt

16h 45m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$514United Airlines

Mon, Sep 14 - Mon, Sep 21

7:20 pm - 7:14 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

25h 54m1 stop Chicago O'Hare Intl

11:00 pm - 8:35 amSEA Seattle/Tacoma Intl-DEC Decatur Arpt

7h 35m1 stop Chicago O'Hare Intl

$519United Airlines

Sat, Sep 19 - Wed, Sep 23

6:57 pm - 10:59 pmDEC Decatur Arpt-SEA Seattle/Tacoma Intl

30h 02m1 stop Chicago O'Hare Intl

7:00 am - 5:55 pmSEA Seattle/Tacoma Intl-DEC Decatur Arpt

8h 55m1 stop Chicago O'Hare Intl

$519United Airlines

Sat, Nov 7 - Tue, Nov 10

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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

Aug 20

DEC9:12 amDecatur Arpt

14h 29m

2 stops

SEA9:41 pmSeattle/Tacoma Intl

Aug 27

SEA11:00 pmSeattle/Tacoma Intl

6h 37m

1 stop

DEC7:37 amDecatur Arpt

$395

United Airlines

Aug 20

DEC9:12 amDecatur Arpt

12h 02m

2 stops

SEA7:14 pmSeattle/Tacoma Intl

Aug 27

SEA4:30 pmSeattle/Tacoma Intl

13h 07m

2 stops

DEC7:37 amDecatur Arpt

$404

United Airlines

Nov 26

DEC9:34 amDecatur Arpt

8h 20m

1 stop

SEA3:54 pmSeattle/Tacoma Intl

Nov 30

SEA7:00 amSeattle/Tacoma Intl

8h 55m

1 stop

DEC5:55 pmDecatur Arpt

$409

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Thu 8/20

9:12 am-9:41 pm

2 stops14h 29m

Seattle/Tacoma Intl

Thu 8/27

11:00 pm-7:37 am

1 stop6h 37m

$395

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Thu 8/20

9:12 am-7:14 pm

2 stops12h 02m

Seattle/Tacoma Intl

Thu 8/27

4:30 pm-7:37 am

2 stops13h 07m

$404

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Thu 11/26

9:34 am-3:54 pm

1 stop8h 20m

Seattle/Tacoma Intl

Mon 11/30

7:00 am-5:55 pm

1 stop8h 55m

$409

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Thu 11/26

9:34 am-8:56 pm

2 stops13h 22m

Seattle/Tacoma Intl

Mon 11/30

7:00 am-5:55 pm

1 stop8h 55m

$415

Quickest round-trip

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Thu 8/20

9:12 am-4:07 pm

1 stop8h 55m

Seattle/Tacoma Intl

Thu 8/27

11:00 pm-7:37 am

1 stop6h 37m

$497

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Mon 9/14

9:12 am-9:51 pm

2 stops14h 39m

Seattle/Tacoma Intl

Mon 9/21

7:00 am-6:43 pm

1 stop9h 43m

$509

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Mon 9/14

9:12 am-9:51 pm

2 stops14h 39m

Seattle/Tacoma Intl

Mon 9/21

11:59 pm-6:44 pm

2 stops16h 45m

$514

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Sat 9/19

7:20 pm-7:14 pm

1 stop25h 54m

Seattle/Tacoma Intl

Wed 9/23

11:00 pm-8:35 am

1 stop7h 35m

$519

DecaturSeattle

DEC Decatur Arpt - SEA Seattle/Tacoma Intl

DECSEA

Decatur Arpt

Sat 11/7

6:57 pm-10:59 pm

1 stop30h 02m

Seattle/Tacoma Intl

Tue 11/10

7:00 am-5:55 pm

1 stop8h 55m

$519

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Fastest flight time	14h 29m
Direct flights	None

The fastest flight from Decatur, Illinois to Seattle takes 14h 29m

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 14h 29m 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.

Frequently asked questions about flying from Decatur, Illinois to Seattle

How do I get Price Alerts for flights from Decatur, Illinois to Seattle?
Search flight deals from Decatur, Illinois to Seattle. While viewing offers you’ll have the option to create a Price Alert.
How can I save money on flights from Decatur, Illinois to Seattle with momondo?
With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.
How does momondo find its flight prices?
We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Decatur to Seattle. Millions of users trust and use momondo every year so you are in good hands.

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.