HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Missouri

$93+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
ago. 3 — ago. 101
dom. 8/3
dom. 8/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Missouri 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 Seattle to Missouri

Keep the following information in mind while searching for Seattle to Missouri flight deals. Data was last updated julio 29, 2025.

Round-trip from

$174
(United Airlines)

One-way from

$93
(Trip.com)

Popular in

May

Cheapest in

January

Average price

$408

Good round-trip deal

$277 or less

Good one-way deal

$128 or less
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. 10% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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

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 julio 29, 2025.

This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/37:00 amSEA - STL
1 stop6h 44mUnited Airlines
vie. 9/55:49 pmSTL - SEA
1 stop7h 10mUnited Airlines
Deal found 7/28$174
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/2611:55 pmSEA - STL
1 stop8h 42mDelta
mar. 9/27:35 amSTL - SEA
1 stop9h 08mDelta
Deal found 7/29$177
This American Airlines deal was found by Cheapflights users on 7/27. 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.
lun. 11/310:07 pmSEA - STL
1 stop9h 28mAmerican Airlines
mié. 12/39:40 amSTL - SEA
1 stop9h 23mAmerican Airlines
Deal found 7/27$183
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
sáb. 9/68:36 amSEA - STL
Nonstop4h 03mHawaiian Airlines
sáb. 9/133:35 pmSTL - SEA
Nonstop4h 19mHawaiian Airlines
Deal found 7/29$214
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/263:40 pmSEA - MCI
Nonstop3h 32mAlaska Airlines
sáb. 8/303:37 pmMCI - SEA
Nonstop3h 53mAlaska Airlines
Deal found 7/29$217
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/263:40 pmSEA - MCI
Nonstop3h 32mHawaiian Airlines
sáb. 8/304:55 pmMCI - SEA
1 stop5h 40mHawaiian Airlines
Deal found 7/29$227
This FlightHub deal was found by Cheapflights users on 7/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/2312:40 pmSEA - MCI
1 stop22h 53mFrontier
vie. 8/296:02 pmMCI - SEA
1 stop8h 32mFrontier
Deal found 7/26$235
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/248:38 amSEA - STL
Nonstop4h 01mAlaska Airlines
sáb. 8/306:00 amSTL - SEA
Nonstop4h 30mAlaska Airlines
Deal found 7/29$237
This CheapOair deal was found by Cheapflights users on 7/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/196:41 amSEA - STL
1 stop24h 30mFrontier
sáb. 8/237:54 pmSTL - SEA
1 stop15h 40mFrontier
Deal found 7/29$248
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/175:02 amSEA - MCI
1 stop5h 38mUnited Airlines
vie. 10/311:47 pmMCI - SEA
2 stops9h 04mUnited Airlines
Deal found 7/28$261
This Southwest deal was found by Cheapflights users on 7/29. 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.
mar. 11/258:35 pmSEA - STL
1 stop12h 05mSouthwest
mar. 12/27:00 amSTL - SEA
1 stop8h 25mSouthwest
Deal found 7/29$262
This Southwest deal was found by Cheapflights users on 7/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/2011:00 amSEA - MCI
Nonstop3h 30mSouthwest
mar. 9/233:05 pmMCI - SEA
2 stops9h 45mSouthwest
Deal found 7/26$272

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 julio 29, 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

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

mié. 9/3

7:00 am-3:44 pm

1 stop6h 44m

Lambert-St Louis

vie. 9/5

5:49 pm-10:59 pm

1 stop7h 10m

$174

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

mié. 8/27

6:34 am-4:56 pm

1 stop8h 22m

Lambert-St Louis

mié. 9/3

2:11 pm-10:29 pm

1 stop10h 18m

$177

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

mié. 9/10

5:30 am-1:30 pm

1 stop6h 00m

Lambert-St Louis

vie. 9/12

7:00 pm-11:59 pm

1 stop6h 59m

$183

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

sáb. 9/6

8:36 am-2:39 pm

Nonstop4h 03m

Lambert-St Louis

sáb. 9/13

3:35 pm-5:54 pm

Nonstop4h 19m

$214

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

mar. 8/26

3:40 pm-9:12 pm

Nonstop3h 32m

Kansas City

sáb. 8/30

3:37 pm-5:30 pm

Nonstop3h 53m

$217

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

mar. 8/26

3:40 pm-9:12 pm

Nonstop3h 32m

Kansas City

sáb. 8/30

4:55 pm-8:35 pm

1 stop5h 40m

$227

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

sáb. 8/23

12:40 pm-1:33 pm

1 stop22h 53m

Kansas City

vie. 8/29

6:02 pm-12:34 am

1 stop8h 32m

$235

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

dom. 8/24

8:38 am-2:39 pm

Nonstop4h 01m

Lambert-St Louis

sáb. 8/30

6:00 am-8:30 am

Nonstop4h 30m

$237

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

mar. 8/19

6:41 am-9:11 am

1 stop24h 30m

Lambert-St Louis

sáb. 8/23

7:54 pm-9:34 am

1 stop15h 40m

$248

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

jue. 9/4

12:05 pm-6:05 pm

Nonstop4h 00m

Lambert-St Louis

dom. 9/7

6:05 pm-1:20 am

1 stop9h 15m

$259

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 46 results
1
2
3
...
5

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, August is the cheapest month in which you can book a flight from Seattle to Missouri (average of $311). Flying from Seattle to Missouri in March is currently the most expensive (average of $356). 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 julio 29, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Missouri as you normally would.

Weekly flight availability from Seattle to Missouri

Explore weekly flight availability from Seattle to Missouri. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated julio 29, 2025.

The most flights from SEA to USMO are scheduled on a Monday (16 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (4 on average).

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 julio 29, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta 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
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,979 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,605 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 4 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $93. However, be on the lookout for offers from United Airlines and Hawaiian Airlines, 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 - Lambert-St Louis, Seattle/Tacoma Intl - Kansas City 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 American Airlines (66%), Alaska Airlines (65%) or Hawaiian Airlines (65%) 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 $126. While the most popular route (Seattle/Tacoma Intl - Lambert-St Louis) can be booked for $174 on average our data indicates $576 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, August is the cheapest month in which you can book a flight from Seattle to Missouri (average of $311). Flying from Seattle to Missouri in March is currently the most expensive (average of $356). 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

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 Seattle to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to John F Kennedy Intl flights
Seattle to Los Angeles flights
Seattle to O'Hare Intl flights
Seattle to San Diego flights
Seattle to Newark flights
Seattle to Honolulu flights
Seattle to Las Vegas flights
Seattle to San Francisco flights
Seattle to Hobby flights
Seattle to Dallas/Fort Worth flights
Seattle to Denver flights
Seattle to LaGuardia flights
Portland to Los Angeles flights
Seattle to Boston flights
Seattle to George Bush Intcntl flights
Seattle to Sky Harbor Intl flights
Seattle to Kahului flights
Seattle to Minneapolis flights
Seattle to Monterey flights
Seattle to Santa Ana flights
Seattle to Detroit flights
Seattle to Atlanta flights
Seattle to Orlando flights
Seattle to Philadelphia flights
Seattle to Ontario flights
Portland to O'Hare Intl flights
Everett to Las Vegas flights
Portland to Honolulu flights
Seattle to Reagan-National flights
Portland to Santa Ana flights
Portland to San Francisco flights
Seattle to Dulles Intl flights
Seattle to San Jose flights
Seattle to Nashville flights
Portland to Las Vegas flights
Seattle to Salt Lake City flights
Seattle to Baltimore flights
Seattle to Kailua-Kona flights
Portland to Newark flights
Portland to Burbank flights
Seattle to New Orleans flights
Portland to Dallas/Fort Worth flights
Portland to Boston flights
Seattle to Burbank flights
Seattle to Miami flights
Portland to San Diego flights
Portland to Ontario flights
Portland to Sky Harbor Intl flights
Seattle to Austin flights
Portland to John F Kennedy Intl flights

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 julio 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$246FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$325FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$168Average$382FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$186Average$525FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$188Average$421FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$201Average$455FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$216Average$463FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$217Average$403FlexibilityNo cancel feeOn-time85%

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.