HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$798+ Cheap flights from Springfield, IL to Seattle (SPI - SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
SPI — SEA
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Springfield to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Springfield to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Springfield (SPI) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 18, 2025.

Round-trip from

$798
(American Airlines)

Popular in

January

Cheapest in

February

Average price

$375
From Springfield Capital to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Springfield to Seattle

Cheapest flights from Springfield to Seattle
Explore the most affordable flight options available from Springfield to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This American Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/146:05 amSPI - SEA
1 stop20h 22mAmerican Airlines
Fri 10/1711:20 pmSEA - SPI
2 stops11h 52mAmerican Airlines
Deal found 8/16$798

Cheapflights Fare Finder

 
Customize your flight search to find flights from Springfield to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Springfield to Seattle that are best for you.

Fly from

Springfield

Fly to

Seattle

Route

Depart

Return

Price

SpringfieldSeattle

SPI - SEA

SPISEA

Springfield Capital

Tue 10/14

6:00 am-12:27 am

1 stop20h 27m

Seattle/Tacoma Intl

Fri 10/17

11:20 pm-1:12 pm

2 stops11h 52m

$798

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Best time to book a flight from Springfield to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Springfield with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Springfield to Seattle

What is the cheapest month to book a flight from Springfield, Illinois to Seattle?

Currently, January is the cheapest month in which you can book a flight from Springfield, Illinois to Seattle (average of $238). Flying from Springfield, Illinois to Seattle in June is currently the most expensive (average of $389). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated August 18, 2025.
Read reviews from past customers who have flown American Airlines from Springfield to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Entertainment

6.9

Boarding

7.5

Crew

8.0

Comfort

7.2

Food

6.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Entertainment

6.9

Boarding

7.5

Crew

8.0

Comfort

7.2

Food

6.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.

Related info for your journey

Find useful and relevant information for your journey from Springfield to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Springfield, Illinois to Seattle round-trip?

    Currently priced at $291, American Airlines will fly you from Springfield, Illinois to Seattle and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. American Airlines is priced at 38% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Springfield to Seattle that include hotel bookings?

    Yes. In addition to deals on Springfield to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Springfield to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Springfield to Seattle.

  • Can I find deals for business class flights from Springfield to Seattle?

    Yes. Cheapflights offers flight deals from Springfield to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Springfield, Illinois to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Springfield, Illinois to Seattle (average of $238). Flying from Springfield, Illinois to Seattle in June is currently the most expensive (average of $389). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Ocean Shores
Lakewood
Lynnwood
Lacey
Leavenworth
Renton
Olympia
Puyallup
Kent
Cle Elum
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline
Federal Way
Shelton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Springfield to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Seattle flights
St. Louis to Seattle flights
O'Hare Intl to Portland flights
Midway to Seattle flights
St. Louis to Portland flights
Peoria to Seattle flights
Midway to Portland flights
O'Hare Intl to Spokane flights
Moline to Seattle flights
Bloomington to Seattle flights
Midway to Spokane flights
Quincy to Seattle flights
Moline to Portland flights
Peoria to Portland flights
St. Louis to Spokane flights
St. Louis to Yakima flights
O'Hare Intl to Pullman flights
O'Hare Intl to Bellingham flights
O'Hare Intl to Pasco flights
Bloomington to Portland flights
Champaign to Seattle flights
Midway to Pasco flights
Decatur to Seattle flights
Moline to Spokane flights
Peoria to Spokane flights
Evansville to Seattle flights
St. Louis to Pasco flights
O'Hare Intl to Walla Walla flights
Decatur to Portland flights
St. Louis to Pullman flights
Springfield to Portland flights
Bloomington to Spokane flights
Champaign to Portland flights
Peoria to Pasco flights
Evansville to Portland flights
Springfield to Spokane flights
Evansville to Spokane flights
Moline to Pasco flights
Dubuque to Portland flights
O'Hare Intl to Wenatchee flights
Springfield to Bellingham flights
Paducah to Seattle flights
O'Hare Intl to Yakima flights
Dubuque to Seattle flights
Moline to Walla Walla flights

Top airline flying from Springfield to Seattle

Discover the top airline that operate flights from Springfield to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$291Average$485FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.