What airlines fly to Seattle?

Alaska Airlines, American Airlines and Hawaiian Airlines 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 61% 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.

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 November 2025, 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.

$334 Cheap Flights from Springfield to Seattle in 2025/26

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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.

6:41 pm - 11:32 pmSPI-SEA

6h 51m1 stop

1:44 pm - 9:59 pmSEA-SPI

6h 15m1 stop

$339American Airlines

Find Deal

Fri, Feb 27 - Tue, Mar 3

6:41 pm - 11:32 pmSPI-SEA

6h 51m1 stop

6:00 am - 9:59 pmSEA-SPI

13h 59m2 stops

$344American Airlines

Find Deal

Fri, Feb 27 - Tue, Mar 3

6:43 pm - 11:05 pmSPI-SEA

6h 22m1 stop

7:00 am - 5:34 pmSEA-SPI

8h 34m1 stop

$379American Airlines

Find Deal

Thu, Apr 9 - Wed, Apr 15

6:43 pm - 11:05 pmSPI-SEA

6h 22m1 stop

1:33 pm - 11:00 pmSEA-SPI

7h 27m1 stop

$389American Airlines

Find Deal

Thu, Apr 9 - Mon, Apr 13

6:43 pm - 11:05 pmSPI-SEA

6h 22m1 stop

3:21 pm - 11:00 pmSEA-SPI

5h 39m1 stop

$419American Airlines

Find Deal

Fri, Apr 10 - Tue, Apr 14

6:43 pm - 11:05 pmSPI-SEA

6h 22m1 stop

6:05 am - 5:34 pmSEA-SPI

9h 29m2 stops

$484American Airlines

Find Deal

Thu, Apr 9 - Wed, Apr 15

6:00 am - 2:40 pmSPI-SEA

10h 40m2 stops

1:33 pm - 11:00 pmSEA-SPI

7h 27m1 stop

$487American Airlines

Find Deal

Fri, Apr 10 - Tue, Apr 14

6:14 pm - 11:13 pmSPI-SEA

6h 59m1 stop

2:04 pm - 10:09 pmSEA-SPI

6h 05m1 stop

$490American Airlines

Find Deal

Sat, Jan 3 - Sun, Jan 11

6:14 pm - 11:13 pmSPI-SEA

6h 59m1 stop

7:35 am - 10:09 pmSEA-SPI

12h 34m2 stops

$495American Airlines

Find Deal

Sat, Jan 3 - Sun, Jan 11

6:41 pm - 11:32 pmSPI-SEA

6h 51m1 stop

12:59 am - 9:59 pmSEA-SPI

19h 00m2 stops

$507American Airlines

Find Deal

Fri, Feb 27 - Mon, Mar 2

American Airlines flights from Springfield, Illinois to Seattle

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

American Airlines

Feb 27

SPI6:41 pmSpringfield Capital

6h 51m

1 stop

SEA11:32 pmSeattle/Tacoma Intl

Mar 3

SEA1:44 pmSeattle/Tacoma Intl

6h 15m

1 stop

SPI9:59 pmSpringfield Capital

$339

Find similar

American Airlines

Feb 27

SPI6:41 pmSpringfield Capital

6h 51m

1 stop

SEA11:32 pmSeattle/Tacoma Intl

Mar 3

SEA6:00 amSeattle/Tacoma Intl

13h 59m

2 stops

SPI9:59 pmSpringfield Capital

$344

Find similar

American Airlines

Apr 9

SPI6:43 pmSpringfield Capital

6h 22m

1 stop

SEA11:05 pmSeattle/Tacoma Intl

Apr 15

SEA7:00 amSeattle/Tacoma Intl

8h 34m

1 stop

SPI5:34 pmSpringfield Capital

$379

Find similar

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

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Fri 2/27

6:41 pm-11:32 pm

1 stop6h 51m

Seattle/Tacoma Intl

Tue 3/3

1:44 pm-9:59 pm

1 stop6h 15m

$339

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Fri 2/27

6:41 pm-11:32 pm

1 stop6h 51m

Seattle/Tacoma Intl

Tue 3/3

6:00 am-9:59 pm

2 stops13h 59m

$344

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Thu 4/9

6:43 pm-11:05 pm

1 stop6h 22m

Seattle/Tacoma Intl

Wed 4/15

7:00 am-5:34 pm

1 stop8h 34m

$379

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Thu 4/9

6:43 pm-11:05 pm

1 stop6h 22m

Seattle/Tacoma Intl

Mon 4/13

1:33 pm-11:00 pm

1 stop7h 27m

$389

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Fri 4/10

6:43 pm-11:05 pm

1 stop6h 22m

Seattle/Tacoma Intl

Tue 4/14

3:21 pm-11:00 pm

1 stop5h 39m

$419

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Thu 4/9

6:43 pm-11:05 pm

1 stop6h 22m

Seattle/Tacoma Intl

Wed 4/15

6:05 am-5:34 pm

2 stops9h 29m

$484

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Fri 4/10

6:00 am-2:40 pm

2 stops10h 40m

Seattle/Tacoma Intl

Tue 4/14

1:33 pm-11:00 pm

1 stop7h 27m

$487

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Sat 1/3

6:14 pm-11:13 pm

1 stop6h 59m

Seattle/Tacoma Intl

Sun 1/11

2:04 pm-10:09 pm

1 stop6h 05m

$490

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Sat 1/3

6:14 pm-11:13 pm

1 stop6h 59m

Seattle/Tacoma Intl

Sun 1/11

7:35 am-10:09 pm

2 stops12h 34m

$495

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Fri 2/27

6:41 pm-11:32 pm

1 stop6h 51m

Seattle/Tacoma Intl

Mon 3/2

12:59 am-9:59 pm

2 stops19h 00m

$507

Flights are sorted by cheapest round-trip flights first.

Sorted 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 day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Springfield, Illinois is on a Sunday. momondo users have found tickets for Sunday departures for as low as $463. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Springfield, Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $561.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Springfield, Illinois at noon is the least expensive time of day to depart. momondo users have found prices as low as $463 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $742. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

Direct flights	None

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

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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 6h 22m.
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 November 2025, 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 $234	Free Cancellation	Rating 7.2 11,040 reviews		Search American Airlines flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Puyallup

Marysville

Redmond

Tukwila

Federal Way

Lakewood

Cle Elum

Fife

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.