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.

$340 Cheap Flights from Decatur to Seattle in 2025

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Find the cheapest flights from Decatur, Illinois to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

9:38 am - 9:15 pmDEC-SEA

13h 37m2 stops

11:40 pm - 8:51 amSEA-DEC

7h 11m1 stop

$340United Airlines

Find Deal

Thu, Sep 25 - Mon, Sep 29

9:38 am - 9:15 pmDEC-SEA

13h 37m2 stops

5:31 pm - 8:51 amSEA-DEC

13h 20m2 stops

$349United Airlines

Find Deal

Thu, Sep 25 - Mon, Sep 29

3:20 pm - 10:29 pmDEC-SEA

9h 09m1 stop

6:31 am - 2:31 pmSEA-DEC

6h 00m1 stop

$374United Airlines

Find Deal

Wed, Mar 4 - Sun, Mar 8

11:35 am - 9:50 pmDEC-SEA

12h 15m2 stops

6:31 am - 2:31 pmSEA-DEC

6h 00m1 stop

$384United Airlines

Find Deal

Wed, Mar 4 - Sun, Mar 8

11:35 am - 10:18 pmDEC-SEA

12h 43m2 stops

10:26 pm - 2:31 pmSEA-DEC

14h 05m2 stops

$389United Airlines

Find Deal

Wed, Mar 4 - Sun, Mar 8

9:38 am - 9:15 pmDEC-SEA

13h 37m3 stops

5:20 pm - 9:48 amSEA-DEC

14h 28m2 stops

$394United Airlines

Find Deal

Sat, Oct 25 - Sat, Nov 1

7:08 pm - 11:28 amDEC-SEA

18h 20m1 stop

11:59 pm - 8:48 amSEA-DEC

6h 49m1 stop

$404United Airlines

Find Deal

Tue, Nov 4 - Sun, Nov 9

7:08 pm - 8:54 pmDEC-SEA

27h 46m2 stops

11:59 pm - 8:48 amSEA-DEC

6h 49m1 stop

$414United Airlines

Find Deal

Tue, Nov 4 - Sun, Nov 9

11:35 am - 6:59 pmDEC-SEA

9h 24m1 stop

6:31 am - 2:31 pmSEA-DEC

6h 00m1 stop

$425United Airlines

Find Deal

Wed, Mar 4 - Sun, Mar 8

11:35 am - 10:18 pmDEC-SEA

12h 43m2 stops

6:31 am - 2:31 pmSEA-DEC

6h 00m1 stop

$435United Airlines

Find Deal

Wed, Mar 4 - Sun, Mar 8

United Airlines flights from Decatur, Illinois to Seattle

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

United Airlines

Sep 25

DEC9:38 amDecatur Arpt

13h 37m

2 stops

SEA9:15 pmSeattle/Tacoma Intl

Sep 29

SEA11:40 pmSeattle/Tacoma Intl

7h 11m

1 stop

DEC8:51 amDecatur Arpt

$340

Find similar

United Airlines

Sep 25

DEC9:38 amDecatur Arpt

13h 37m

2 stops

SEA9:15 pmSeattle/Tacoma Intl

Sep 29

SEA5:31 pmSeattle/Tacoma Intl

13h 20m

2 stops

DEC8:51 amDecatur Arpt

$349

Find similar

United Airlines

Mar 4

DEC3:20 pmDecatur Arpt

9h 09m

1 stop

SEA10:29 pmSeattle/Tacoma Intl

Mar 8

SEA6:31 amSeattle/Tacoma Intl

6h 00m

1 stop

DEC2:31 pmDecatur Arpt

$374

Find similar

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

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Thu 9/25

9:38 am-9:15 pm

2 stops13h 37m

Seattle/Tacoma Intl

Mon 9/29

11:40 pm-8:51 am

1 stop7h 11m

$340

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Thu 9/25

9:38 am-9:15 pm

2 stops13h 37m

Seattle/Tacoma Intl

Mon 9/29

5:31 pm-8:51 am

2 stops13h 20m

$349

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Wed 3/4

3:20 pm-10:29 pm

1 stop9h 09m

Seattle/Tacoma Intl

Sun 3/8

6:31 am-2:31 pm

1 stop6h 00m

$374

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Wed 3/4

11:35 am-9:50 pm

2 stops12h 15m

Seattle/Tacoma Intl

Sun 3/8

6:31 am-2:31 pm

1 stop6h 00m

$384

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Wed 3/4

11:35 am-10:18 pm

2 stops12h 43m

Seattle/Tacoma Intl

Sun 3/8

10:26 pm-2:31 pm

2 stops14h 05m

$389

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Sat 10/25

9:38 am-9:15 pm

3 stops13h 37m

Seattle/Tacoma Intl

Sat 11/1

5:20 pm-9:48 am

2 stops14h 28m

$394

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Tue 11/4

7:08 pm-11:28 am

1 stop18h 20m

Seattle/Tacoma Intl

Sun 11/9

11:59 pm-8:48 am

1 stop6h 49m

$404

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Tue 11/4

7:08 pm-8:54 pm

2 stops27h 46m

Seattle/Tacoma Intl

Sun 11/9

11:59 pm-8:48 am

1 stop6h 49m

$414

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Wed 3/4

11:35 am-6:59 pm

1 stop9h 24m

Seattle/Tacoma Intl

Sun 3/8

6:31 am-2:31 pm

1 stop6h 00m

$425

DecaturSeattle

DEC - SEA

DECSEA

Decatur Arpt

Wed 3/4

11:35 am-10:18 pm

2 stops12h 43m

Seattle/Tacoma Intl

Sun 3/8

6:31 am-2:31 pm

1 stop6h 00m

$435

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

Direct flights	None

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

Search flight deals

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 7h 50m 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.

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.