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$61+ Cheap flights from Seattle (SEA) to Missouri

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Find flight deals from Seattle to Missouri

Cheapest flights from Seattle to Missouri
Explore the most affordable flight options available from Seattle to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This Booking.com deal was found by Cheapflights users on 10/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/19:22 pmSEA - MCI
1 stop13h 24mFrontier
Sat 11/158:28 pmMCI - SEA
1 stop17h 45mFrontier
Deal found 10/26$218
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/98:40 amSEA - MCI
1 stop5h 26mUnited Airlines
Sat 12/135:10 pmMCI - SEA
1 stop6h 11mUnited Airlines
Deal found 10/27$227
This KAYAK deal was found by Cheapflights users on 10/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:47 pmSEA - MCI
Nonstop3h 26mHawaiian Airlines
Sun 1/46:00 amMCI - SEA
Nonstop4h 15mHawaiian Airlines
Deal found 10/26$229
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/212:54 pmSEA - MCI
1 stop26h 56mFrontier
Wed 12/3111:33 amMCI - SEA
2 stops39h 09mFrontier
Deal found 10/27$231
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/181:25 pmSEA - MCI
1 stop28h 25mFrontier
Wed 12/248:45 pmMCI - SEA
1 stop17h 45mFrontier
Deal found 10/28$233
This American Airlines deal was found by Cheapflights users on 10/27. 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.
Wed 11/1212:59 amSEA - STL
1 stop7h 40mAmerican Airlines
Thu 11/205:17 amSTL - SEA
1 stop9h 52mAmerican Airlines
Deal found 10/27$233
This Cheapflightsfares deal was found by Cheapflights users on 10/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/911:52 amSEA - MCI
Nonstop3h 35mAlaska Airlines
Sat 12/136:55 amMCI - SEA
Nonstop4h 12mAlaska Airlines
Deal found 10/27$235
This Cheapflightsfares deal was found by Cheapflights users on 10/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:05 pmSEA - STL
Nonstop3h 54mAlaska Airlines
Sun 12/147:00 amSTL - SEA
Nonstop4h 40mAlaska Airlines
Deal found 10/27$235
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1312:58 pmSEA - MCI
2 stops19h 19mFrontier
Mon 11/178:28 pmMCI - SEA
1 stop17h 39mFrontier
Deal found 10/27$236
This Orbitz deal was found by Cheapflights users on 10/26. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/168:22 pmSEA - STL
1 stop13h 02mMultiple Airlines
Wed 11/197:00 amSTL - SEA
Nonstop4h 33mMultiple Airlines
Deal found 10/26$236
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/98:40 amSEA - MCI
1 stop5h 26mUnited Airlines
Sun 12/146:00 amMCI - SEA
1 stop6h 09mUnited Airlines
Deal found 10/27$237
This Southwest deal was found by Cheapflights users on 10/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:40 amSEA - STL
1 stop5h 40mSouthwest
Fri 1/26:45 pmSTL - SEA
1 stop7h 50mSouthwest
Deal found 10/27$237

Cheap flight deals from Seattle to Missouri

Keep the following information in mind while searching for Seattle to Missouri flight deals. Data was last updated October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$227
(United Airlines)

One-way from

$61
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$345

Good round-trip deal

$257 or less

Good one-way deal

$148 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Lambert-St Louis flights.
Search Deals
From Seattle/Tacoma Intl to Missouri
Search Deals
One-way flight from Seattle/Tacoma Intl to Missouri
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Missouri.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Missouri.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Missouri 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 October 28, 2025.
Use the filters below to find and compare flights from Seattle to Missouri that are best for you.

Fly from

Seattle

Fly to

Missouri

Route

Depart

Return

Price

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Tue 12/9

8:40 am-4:06 pm

1 stop5h 26m

Kansas City

Sat 12/13

5:10 pm-9:21 pm

1 stop6h 11m

$227

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Thu 12/25

7:05 am-5:20 pm

1 stop8h 15m

Lambert-St Louis

Fri 1/2

8:55 am-3:15 pm

1 stop8h 20m

$237

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Tue 12/9

7:00 am-4:46 pm

1 stop7h 46m

Kansas City

Sun 12/14

6:00 am-10:09 am

1 stop6h 09m

$237

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Wed 12/3

5:50 pm-11:22 pm

Nonstop3h 32m

Kansas City

Sun 12/7

7:50 am-10:02 am

Nonstop4h 12m

$247

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Thu 12/11

8:34 am-2:27 pm

Nonstop3h 53m

Lambert-St Louis

Sun 12/14

7:00 am-9:40 am

Nonstop4h 40m

$257

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Thu 12/11

5:50 pm-11:22 pm

Nonstop3h 32m

Kansas City

Sun 12/14

7:50 am-10:02 am

Nonstop4h 12m

$257

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Sun 1/25

6:05 pm-11:34 pm

Nonstop3h 29m

Kansas City

Sun 2/1

7:00 am-9:05 am

Nonstop4h 05m

$257

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Fri 12/5

5:50 pm-11:22 pm

Nonstop3h 32m

Kansas City

Sun 12/7

7:50 am-10:02 am

Nonstop4h 12m

$257

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Fri 11/21

5:50 pm-11:24 pm

Nonstop3h 34m

Kansas City

Sun 11/23

7:55 am-10:08 am

Nonstop4h 13m

$257

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Fri 12/12

5:50 pm-11:22 pm

Nonstop3h 32m

Kansas City

Sun 12/14

7:50 am-10:02 am

Nonstop4h 12m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 60 results
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Best time to book a flight from Seattle to Missouri

Have a flexible travel schedule? Discover the best time to fly to Missouri from Seattle 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 Seattle to Missouri

What is the cheapest month to book a flight from Seattle to Missouri?

Currently, January is the cheapest month in which you can book a flight from Seattle to Missouri (average of $61). Flying from Seattle to Missouri in March is currently the most expensive (average of $230). 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.

What is the cheapest time of day to fly from SEA to MO?

Find hourly flight availability from Seattle to Missouri. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 28, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 14% on flights from Seattle to Missouri by exploring options for tickets at noon.

What is the cheapest day to fly from Seattle to Missouri?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Missouri. Price data was last updated on November 3, 2024.

Travelers seeking maximum savings on their Seattle to Missouri flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Missouri

Get insights into the airlines that provide service to Missouri. 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 Missouri. Reviews last updated October 28, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from Seattle to Missouri have to say. 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.
Alaska Airlines
8.0
Very good
11,203 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,203 reviews
Alaska Airlines
8.0
Very good
11,203 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
7.9
Good
7,994 reviews
Alaska Airlines
8.0
Very good
11,203 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Hawaiian Airlines
7.8
Good
2,794 reviews
Alaska Airlines
8.0
Very good
11,203 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
United Airlines
7.4
Good
9,001 reviews
Alaska Airlines
8.0
Very good
11,203 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
American Airlines
7.2
Good
11,032 reviews
Alaska Airlines
8.0
Very good
11,203 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

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

  • What airport do you fly from for flights from Seattle to Missouri?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Missouri.

  • How popular is this Seattle to Missouri flight route?

    This flight path from Seattle/Tacoma Intl to Missouri was viewed by 5 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Missouri?

    United Airlines, Southwest, and Delta can get you from Seattle to Missouri in just under 3h 32m. Your travel time can differ by up to 4h 43m. The distance between Seattle and Missouri is about 1485 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Seattle to Missouri one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $74. However, be on the lookout for offers from Southwest and Frontier, as they are both options that can get you from Seattle to Missouri for a low price.

  • What are the most popular routes from Seattle to Missouri?

    When deciding which route to take from Seattle to Missouri consider Seattle/Tacoma Intl - Kansas City, Seattle/Tacoma Intl - Lambert-St Louis or Seattle/Tacoma Intl - Springfield-Branson as they are the most popular.

  • What are the most reliable airlines from Seattle to Missouri?

    No one likes to see their flight delayed. When booking a flight from Seattle to Missouri consider choosing Finnair (100%), Alaska Airlines (86%) or Hawaiian Airlines (86%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to Missouri?

    Looking at all options, your cheapest flight can be booked for $118. While the most popular route (Seattle/Tacoma Intl - Kansas City) can be booked for $227 on average, our data indicates $574 when flying from Seattle to Missouri.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Missouri 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 Seattle to Missouri?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Missouri (average of $61). Flying from Seattle to Missouri in March is currently the most expensive (average of $230). 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.

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Alternative routes for Seattle to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Seattle to Missouri

Discover the top 8 airlines that operate flights from Seattle to Missouri. 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$134Average$283FlexibilityNo cancel feeOn-time62%
DeltaCheapest$134Average$314FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$168Average$310FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$169Average$381FlexibilityNo cancel feeOn-time63%
Hawaiian AirlinesCheapest$178Average$398FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$186Average$530FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$207Average$419FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$216Average$454FlexibilityNo cancel feeOn-time69%

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