Missouri

$66+ 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
Feb 26 — Mar 51
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

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 January 27, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/24. 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.
Tue 2/246:30 pm
SEA
-
STL
2 stops19h 23m
Frontier
Mon 3/210:11 pm
STL
-
SEA
1 stop22h 07m
Frontier
Deal found 1/24$157
This American Airlines deal was found by Cheapflights users on 1/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2412:07 am
SEA
-
STL
1 stop7h 56m
American Airlines
Sat 2/286:36 pm
STL
-
SEA
1 stop7h 48m
American Airlines
Deal found 1/26$159
This American Airlines deal was found by Cheapflights users on 1/24. 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 2/2411:57 pm
SEA
-
STL
1 stop6h 58m
American Airlines
Sun 3/16:38 pm
STL
-
SEA
1 stop7h 46m
American Airlines
Deal found 1/24$168
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:30 am
SEA
-
STL
1 stop5h 47m
Delta
Wed 4/226:45 pm
STL
-
SEA
1 stop7h 14m
Delta
Deal found 1/26$177
This American Airlines deal was found by Cheapflights users on 1/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:44 am
SEA
-
STL
1 stop8h 29m
American Airlines
Wed 3/42:06 pm
STL
-
SEA
1 stop9h 00m
American Airlines
Deal found 1/26$184
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/29:14 pm
SEA
-
MCI
1 stop24h 19m
Multiple Airlines
Sat 3/78:40 pm
MCI
-
SEA
1 stop15h 39m
Multiple Airlines
Deal found 1/26$186
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Fri 3/1312:24 pm
SEA
-
MCI
1 stop29h 31m
Frontier
Sun 3/228:40 pm
MCI
-
SEA
1 stop16h 39m
Frontier
Deal found 1/27$188
This American Airlines deal was found by Cheapflights users on 1/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/211:57 pm
SEA
-
STL
1 stop9h 04m
American Airlines
Sat 3/76:36 pm
STL
-
SEA
1 stop7h 48m
American Airlines
Deal found 1/26$193
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/186:21 pm
SEA
-
MCI
Nonstop3h 29m
Delta
Wed 3/47:00 am
MCI
-
SEA
Nonstop4h 06m
Delta
Deal found 1/26$197
This CheapOair deal was found by Cheapflights users on 1/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:02 pm
SEA
-
STL
Nonstop3h 57m
Alaska Airlines
Wed 4/227:00 am
STL
-
SEA
Nonstop4h 32m
Alaska Airlines
Deal found 1/26$197
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/261:32 pm
SEA
-
STL
1 stop8h 49m
Delta
Mon 3/306:12 pm
STL
-
SEA
1 stop7h 51m
Delta
Deal found 1/26$198
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Mon 3/169:36 pm
SEA
-
MCI
1 stop23h 55m
Multiple Airlines
Fri 3/207:00 am
MCI
-
SEA
1 stop12h 39m
Multiple Airlines
Deal found 1/27$202

Find flight deals from Seattle to Missouri

Keep the following information in mind while searching for Seattle to Missouri flight deals. Data was last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$157
(Kiwi.com)

One-way from

$66
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$268

Good round-trip deal

$217 or less

Good one-way deal

$153 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Lambert-St Louis flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Lambert-St Louis flights.
From Seattle/Tacoma Intl to Missouri
One-way flight from Seattle/Tacoma Intl to Missouri
Highest demand for flights based on searches. 4% potential increase in price ($15 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Average for round-trip flights in January 2026
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Missouri.
Price to beat on a one-way flight from Seattle/Tacoma Intl to Missouri.

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 January 27, 2026.
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

Mon 3/9

10:08 pm-9:40 am

1 stop9h 32m

Lambert-St Louis

Tue 3/10

4:13 pm-11:09 pm

1 stop8h 56m

$168

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Wed 2/18

6:21 pm-11:50 pm

Nonstop3h 29m

Kansas City

Wed 3/4

7:00 am-9:06 am

Nonstop4h 06m

$197

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Tue 3/17

8:21 am-1:55 pm

Nonstop3h 34m

Kansas City

Wed 3/25

6:15 am-8:24 am

Nonstop4h 09m

$207

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Wed 4/15

8:55 am-2:51 pm

Nonstop3h 56m

Lambert-St Louis

Sun 4/19

7:00 am-9:35 am

Nonstop4h 35m

$207

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Wed 4/8

1:32 pm-12:21 am

1 stop8h 49m

Lambert-St Louis

Thu 4/9

6:12 pm-12:03 am

1 stop7h 51m

$209

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Tue 4/21

8:55 am-4:16 pm

1 stop5h 21m

Kansas City

Mon 4/27

4:06 pm-9:46 pm

1 stop7h 40m

$217

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Thu 4/23

11:59 pm-10:27 am

1 stop8h 28m

Kansas City

Mon 4/27

4:06 pm-9:46 pm

1 stop7h 40m

$217

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Wed 3/11

8:21 am-1:55 pm

Nonstop3h 34m

Kansas City

Sun 3/22

6:15 am-8:24 am

Nonstop4h 09m

$217

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Fri 2/20

6:21 pm-11:50 pm

Nonstop3h 29m

Kansas City

Sun 2/22

7:00 am-9:06 am

Nonstop4h 06m

$217

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Fri 4/17

11:59 pm-10:27 am

1 stop8h 28m

Kansas City

Sat 4/25

6:00 am-9:46 am

1 stop5h 46m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 52 results
1
2
3
...
6

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 $148). Flying from Seattle to Missouri in March is currently the most expensive (average of $202). 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 January 27, 2026.

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.

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 January 27, 2026.
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.

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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?

  • How long is the flight from Seattle to Missouri?

    American Airlines, Delta, and Alaska Airlines can get you from Seattle to Missouri in just under 3h 29m. Your travel time can differ by up to 6h 03m. 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?

  • 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 Qatar Airways (89%), Alaska Airlines (88%) or Hawaiian Airlines (85%) 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 $80. While the most popular route (Seattle/Tacoma Intl - Lambert-St Louis) can be booked for $177 on average, our data indicates $226 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 $148). Flying from Seattle to Missouri in March is currently the most expensive (average of $202). 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.

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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$94Average$296FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$121Average$254FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$148Average$374FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$157Average$462FlexibilityNo cancel feeOn-time69%
Spirit AirlinesCheapest$168Average$285FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$182Average$381FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$188Average$512FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$213Average$405FlexibilityNo cancel feeOn-time75%

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.