What airlines fly to Seattle?

Alaska Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Seattle from Springfield, Illinois according to our data. Alaska Airlines is the first choice among our users, with 67% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 7 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Springfield Capital to Seattle/Tacoma Intl?

American Airlines is the most popular carrier operating from Springfield Capital to Seattle/Tacoma Intl

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

Prices for flights from Springfield Capital Airport to Seattle/Tacoma Intl Airport were last updated today.

How many operators does momondo search for flights from Springfield Capital Airport to Seattle/Tacoma Intl Airport?

As of June 2026, there is 1 operator available to choose from for flights from Springfield Capital Airport to Seattle/Tacoma Intl Airport.

How old do you have to be to fly from Springfield Capital Airport to Seattle/Tacoma Intl Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Springfield Capital 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.

$262 Cheap Flights from Springfield, Illinois to Seattle in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Springfield, Illinois to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:51 pm - 8:52 pm

SPI

SEA

8h 01m

1 stop

3:35 pm - 12:12 am

SEA

SPI

6h 37m

1 stop

$525American Airlines

Sat, Aug 15 - Sun, Aug 23

2:55 pm - 8:37 pm

SPI

SEA

7h 42m

1 stop

3:28 pm - 12:09 am

SEA

SPI

6h 41m

1 stop

$530American Airlines

Tue, Jul 21 - Tue, Jul 28

2:55 pm - 8:37 pm

SPI

SEA

7h 42m

1 stop

3:28 pm - 12:09 am

SEA

SPI

6h 41m

1 stop

$580American Airlines

Thu, Jul 23 - Wed, Jul 29

2:51 pm - 8:52 pm

SPI

SEA

8h 01m

1 stop

5:50 am - 2:17 pm

SEA

SPI

6h 27m

1 stop

$593American Airlines

Sat, Aug 15 - Sat, Aug 22

6:00 am - 1:19 pm

SPI

SEA

9h 19m

1 stop

5:50 am - 2:21 pm

SEA

SPI

6h 31m

1 stop

$603American Airlines

Sun, Jul 26 - Wed, Aug 5

2:51 pm - 8:52 pm

SPI

SEA

8h 01m

1 stop

5:50 am - 2:21 pm

SEA

SPI

6h 31m

1 stop

$612American Airlines

Thu, Sep 3 - Mon, Sep 7

2:55 pm - 8:37 pm

SPI

SEA

7h 42m

1 stop

3:28 pm - 12:09 am

SEA

SPI

6h 41m

1 stop

$618American Airlines

Fri, Jul 10 - Tue, Jul 14

6:00 am - 4:47 pm

SPI

SEA

12h 47m

2 stops

6:00 am - 2:24 pm

SEA

SPI

6h 24m

1 stop

$623American Airlines

Tue, Jul 21 - Tue, Jul 28

2:51 pm - 8:52 pm

SPI

SEA

8h 01m

1 stop

3:35 pm - 12:12 am

SEA

SPI

6h 37m

1 stop

$625American Airlines

Sat, Aug 15 - Fri, Aug 21

6:08 am - 12:34 pm

SPI

SEA

8h 26m

1 stop

5:50 am - 2:17 pm

SEA

SPI

6h 27m

1 stop

$630American Airlines

Wed, Aug 19 - Sat, Aug 22

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American Airlines flights from Springfield, Illinois to Seattle

Our best American Airlines deals on Springfield, Illinois to Seattle flight tickets

American Airlines

Aug 15

SPI2:51 pmSpringfield Capital

8h 01m

1 stop

SEA8:52 pmSeattle/Tacoma Intl

Aug 23

SEA3:35 pmSeattle/Tacoma Intl

6h 37m

1 stop

SPI12:12 amSpringfield Capital

$525

American Airlines

Jul 21

SPI2:55 pmSpringfield Capital

7h 42m

1 stop

SEA8:37 pmSeattle/Tacoma Intl

Jul 28

SEA3:28 pmSeattle/Tacoma Intl

6h 41m

1 stop

SPI12:09 amSpringfield Capital

$530

American Airlines

Jul 23

SPI2:55 pmSpringfield Capital

7h 42m

1 stop

SEA8:37 pmSeattle/Tacoma Intl

Jul 29

SEA3:28 pmSeattle/Tacoma Intl

6h 41m

1 stop

SPI12:09 amSpringfield Capital

$580

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Sat 8/15

2:51 pm-8:52 pm

1 stop8h 01m

Seattle/Tacoma Intl

Sun 8/23

3:35 pm-12:12 am

1 stop6h 37m

$525

Quickest round-trip

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Tue 7/21

2:55 pm-8:37 pm

1 stop7h 42m

Seattle/Tacoma Intl

Tue 7/28

3:28 pm-12:09 am

1 stop6h 41m

$530

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Thu 7/23

2:55 pm-8:37 pm

1 stop7h 42m

Seattle/Tacoma Intl

Wed 7/29

3:28 pm-12:09 am

1 stop6h 41m

$580

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Sat 8/15

2:51 pm-8:52 pm

1 stop8h 01m

Seattle/Tacoma Intl

Sat 8/22

5:50 am-2:17 pm

1 stop6h 27m

$593

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Sun 7/26

6:00 am-1:19 pm

1 stop9h 19m

Seattle/Tacoma Intl

Wed 8/5

5:50 am-2:21 pm

1 stop6h 31m

$603

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Thu 9/3

2:51 pm-8:52 pm

1 stop8h 01m

Seattle/Tacoma Intl

Mon 9/7

5:50 am-2:21 pm

1 stop6h 31m

$612

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Fri 7/10

2:55 pm-8:37 pm

1 stop7h 42m

Seattle/Tacoma Intl

Tue 7/14

3:28 pm-12:09 am

1 stop6h 41m

$618

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Tue 7/21

6:00 am-4:47 pm

2 stops12h 47m

Seattle/Tacoma Intl

Tue 7/28

6:00 am-2:24 pm

1 stop6h 24m

$623

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Sat 8/15

2:51 pm-8:52 pm

1 stop8h 01m

Seattle/Tacoma Intl

Fri 8/21

3:35 pm-12:12 am

1 stop6h 37m

$625

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Wed 8/19

6:08 am-12:34 pm

1 stop8h 26m

Seattle/Tacoma Intl

Sat 8/22

5:50 am-2:17 pm

1 stop6h 27m

$630

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first

How to get the cheapest flight ticket from Springfield, 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

Prices

Airlines

What is the cheapest month to fly to Seattle?

In general, October is the cheapest month to fly from Springfield, Illinois to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you don’t want to visit Seattle in October, then you should wait until February to fly from Springfield, Illinois, when ticket prices are also cheap, with an average price of $0.

When to book flights from Springfield, Illinois to Seattle

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

Estimated round-trip price

Cheap Springfield, Illinois to Seattle (SPI to SEA) flight deals and tips

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

Fastest flight time	7h 42m
Direct flights	None

The fastest flight from Springfield, Illinois to Seattle takes 7h 42m

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

Search flight deals

Frequently asked questions about flying from Springfield, Illinois to Seattle

How far is Springfield Capital to Seattle/Tacoma Intl by plane?
Springfield Capital and Seattle/Tacoma Intl are 1704.0 mi apart from one another. In terms of flight time, this usually takes a little over 7h 42m.
When did momondo last update prices for flights from Springfield Capital Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Springfield Capital Airport to Seattle/Tacoma Intl Airport were last updated today.
How many operators does momondo search for flights from Springfield Capital Airport to Seattle/Tacoma Intl Airport?
As of June 2026, there is 1 operator available to choose from for flights from Springfield Capital Airport to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Springfield Capital Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Springfield Capital 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.
What is the most popular airline from Springfield, Illinois to Seattle?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Springfield, Illinois to Seattle is American Airlines (100% of total bookings).

Best airlines flying from Springfield, Illinois to Seattle

Compare and see reviews for airlines that fly from Springfield, Illinois to Seattle with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $248	Free Cancellation	Rating 7.1 11,774 reviews		Search American Airlines flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Redmond

Kent

Lakewood

Puyallup

Tukwila

Cle Elum

Federal Way

Fife

Marysville

Centralia

Kirkland

Shoreline

Westport

Why use momondo?

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

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 Seattle from Springfield.

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

All flight searches from Springfield to Seattle on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Springfield and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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