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

Confirm your travel details to search for the latest offers for flights from Seattle to Decatur, Illinois . While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

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

Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore” . Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

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 Seattle/Tacoma Intl Airport to Decatur Arpt Airport?

Prices for flights from Seattle/Tacoma Intl Airport to Decatur Arpt Airport are updated daily.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport 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.

$306 Cheap Flights from Seattle to Decatur in 2025/26

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Find the cheapest flights from Seattle to Decatur

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:59 pm - 8:52 amSEA-DEC

6h 53m1 stop

7:09 pm - 5:58 pmDEC-SEA

24h 49m1 stop

$424United Airlines

Find Deal

Tue, Mar 3 - Sat, Mar 7

11:45 pm - 5:56 pmSEA-DEC

16h 11m2 stops

7:09 pm - 5:58 pmDEC-SEA

24h 49m1 stop

$434United Airlines

Find Deal

Tue, Mar 3 - Sat, Mar 7

5:20 pm - 8:52 amSEA-DEC

13h 32m2 stops

7:09 pm - 9:03 amDEC-SEA

15h 54m2 stops

$452United Airlines

Find Deal

Tue, Mar 3 - Sat, Mar 7

11:59 pm - 9:05 amSEA-DEC

7h 06m1 stop

7:09 pm - 10:47 pmDEC-SEA

29h 38m1 stop

$484United Airlines

Find Deal

Sun, Dec 28 - Sun, Jan 4

11:59 pm - 9:05 amSEA-DEC

7h 06m1 stop

7:09 pm - 9:17 pmDEC-SEA

28h 08m2 stops

$494United Airlines

Find Deal

Mon, Dec 29 - Sun, Jan 4

11:34 pm - 8:48 amSEA-DEC

7h 14m1 stop

7:08 pm - 9:50 amDEC-SEA

16h 42m1 stop

$519United Airlines

Find Deal

Tue, Nov 18 - Sat, Nov 22

7:28 pm - 8:48 amSEA-DEC

11h 20m2 stops

7:08 pm - 9:50 amDEC-SEA

16h 42m1 stop

$529United Airlines

Find Deal

Tue, Nov 18 - Sat, Nov 22

7:12 pm - 9:05 amSEA-DEC

11h 53m2 stops

7:09 pm - 9:17 pmDEC-SEA

28h 08m2 stops

$560United Airlines

Find Deal

Mon, Dec 29 - Sun, Jan 4

11:59 pm - 9:05 amSEA-DEC

7h 06m1 stop

7:09 pm - 10:52 pmDEC-SEA

29h 43m3 stops

$568United Airlines

Find Deal

Sun, Dec 28 - Sun, Jan 4

11:59 pm - 9:05 amSEA-DEC

7h 06m1 stop

9:44 am - 10:47 pmDEC-SEA

15h 03m1 stop

$571United Airlines

Find Deal

Sun, Dec 28 - Sat, Jan 3

United Airlines flights from Seattle to Decatur, Illinois

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

United Airlines

Mar 3

SEA11:59 pmSeattle/Tacoma Intl

6h 53m

1 stop

DEC8:52 amDecatur Arpt

Mar 7

DEC7:09 pmDecatur Arpt

24h 49m

1 stop

SEA5:58 pmSeattle/Tacoma Intl

$424

Find similar

United Airlines

Mar 3

SEA11:45 pmSeattle/Tacoma Intl

16h 11m

2 stops

DEC5:56 pmDecatur Arpt

Mar 7

DEC7:09 pmDecatur Arpt

24h 49m

1 stop

SEA5:58 pmSeattle/Tacoma Intl

$434

Find similar

United Airlines

Mar 3

SEA5:20 pmSeattle/Tacoma Intl

13h 32m

2 stops

DEC8:52 amDecatur Arpt

Mar 7

DEC7:09 pmDecatur Arpt

15h 54m

2 stops

SEA9:03 amSeattle/Tacoma Intl

$452

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Tue 3/3

11:59 pm-8:52 am

1 stop6h 53m

Decatur Arpt

Sat 3/7

7:09 pm-5:58 pm

1 stop24h 49m

$424

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Tue 3/3

11:45 pm-5:56 pm

2 stops16h 11m

Decatur Arpt

Sat 3/7

7:09 pm-5:58 pm

1 stop24h 49m

$434

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Tue 3/3

5:20 pm-8:52 am

2 stops13h 32m

Decatur Arpt

Sat 3/7

7:09 pm-9:03 am

2 stops15h 54m

$452

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Sun 12/28

11:59 pm-9:05 am

1 stop7h 06m

Decatur Arpt

Sun 1/4

7:09 pm-10:47 pm

1 stop29h 38m

$484

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Mon 12/29

11:59 pm-9:05 am

1 stop7h 06m

Decatur Arpt

Sun 1/4

7:09 pm-9:17 pm

2 stops28h 08m

$494

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Tue 11/18

11:34 pm-8:48 am

1 stop7h 14m

Decatur Arpt

Sat 11/22

7:08 pm-9:50 am

1 stop16h 42m

$519

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Tue 11/18

7:28 pm-8:48 am

2 stops11h 20m

Decatur Arpt

Sat 11/22

7:08 pm-9:50 am

1 stop16h 42m

$529

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Mon 12/29

7:12 pm-9:05 am

2 stops11h 53m

Decatur Arpt

Sun 1/4

7:09 pm-9:17 pm

2 stops28h 08m

$560

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Sun 12/28

11:59 pm-9:05 am

1 stop7h 06m

Decatur Arpt

Sun 1/4

7:09 pm-10:52 pm

3 stops29h 43m

$568

SeattleDecatur

SEA - DEC

SEADEC

Seattle/Tacoma Intl

Sun 12/28

11:59 pm-9:05 am

1 stop7h 06m

Decatur Arpt

Sat 1/3

9:44 am-10:47 pm

1 stop15h 03m

$571

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Seattle to Decatur, Illinois

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

Estimated round-trip price

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

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

Direct flights	None

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

Search flight deals

How far is Seattle/Tacoma Intl to Decatur Arpt by plane?
The straight-line distance from Seattle/Tacoma Intl to Decatur Arpt is 1734.6 mi. A reasonable flight in good conditions will take 6h 53m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Decatur Arpt Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Decatur Arpt Airport are updated daily.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Decatur Arpt Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport 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.

How do I get Price Alerts for flights from Seattle to Decatur, Illinois?
Confirm your travel details to search for the latest offers for flights from Seattle to Decatur, Illinois. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.
How can I save money on flights from Seattle to Decatur, Illinois with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
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 Seattle to Decatur?

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

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

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

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

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

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