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$109+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$229
(Delta)

One-way from

$109
(American Airlines)

Popular in

May

Cheapest in

January

Average price

$423

Good round-trip deal

$318 or less

Good one-way deal

$164 or less
From Seattle/Tacoma Intl to Missouri
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One-way flight from Seattle/Tacoma Intl to Missouri
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Highest demand for flights based on searches. 10% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Missouri.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Missouri.
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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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/12. 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 9/2412:40 amSEA - STL
1 stop6h 04mDelta
Sun 9/286:59 pmSTL - SEA
1 stop7h 10mDelta
Deal found 6/12$229
This Southwest deal was found by Cheapflights users on 6/11. 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.
Sun 8/310:40 pmSEA - STL
1 stop7h 05mSouthwest
Fri 8/84:40 pmSTL - SEA
1 stop9h 35mSouthwest
Deal found 6/11$233
This CheapOair deal was found by Cheapflights users on 6/10. 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.
Thu 11/63:45 pmSEA - STL
1 stop19h 49mFrontier
Sun 11/92:19 pmSTL - SEA
1 stop26h 41mFrontier
Deal found 6/10$248
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 7/316:06 pmSEA - STL
Nonstop3h 53mAlaska Airlines
Tue 8/53:24 pmSTL - SEA
Nonstop4h 26mAlaska Airlines
Deal found 6/10$249
This American Airlines deal was found by Cheapflights users on 6/12. 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 8/136:34 amSEA - STL
1 stop8h 22mAmerican Airlines
Mon 8/183:53 pmSTL - SEA
1 stop8h 07mAmerican Airlines
Deal found 6/12$253
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Thu 7/312:20 amSEA - STL
1 stop8h 20mUnited Airlines
Tue 7/85:15 amSTL - SEA
1 stop6h 44mUnited Airlines
Deal found 6/12$258
This Booking.com deal was found by Cheapflights users on 6/11. 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.
Sun 9/78:34 pmSEA - MCI
1 stop20h 29mFrontier
Fri 9/127:48 pmMCI - SEA
1 stop6h 43mFrontier
Deal found 6/11$261
This American Airlines deal was found by Cheapflights users on 6/12. 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 8/2612:45 amSEA - MCI
1 stop10h 37mAmerican Airlines
Sun 9/76:15 pmMCI - SEA
1 stop6h 44mAmerican Airlines
Deal found 6/12$262
This CheapOair deal was found by Cheapflights users on 6/11. 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.
Fri 8/15:30 pmSEA - MCI
1 stop22h 55mSpirit Airlines
Tue 8/52:32 pmMCI - SEA
1 stop27h 53mSpirit Airlines
Deal found 6/11$266
This Sun Country Air deal was found by Cheapflights users on 6/10. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1411:59 pmSEA - STL
1 stop9h 31mSun Country Air
Sun 8/178:00 amSTL - SEA
1 stop16h 50mSun Country Air
Deal found 6/10$275
This Hawaiian Airlines deal was found by Cheapflights users on 6/10. 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.
Sat 8/166:05 pmSEA - MCI
Nonstop3h 30mHawaiian Airlines
Mon 8/186:45 amMCI - SEA
Nonstop4h 02mHawaiian Airlines
Deal found 6/10$277
This FlightHub deal was found by Cheapflights users on 6/10. 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.
Thu 7/317:48 pmSEA - MCI
1 stop21h 16mMultiple Airlines
Tue 8/52:32 pmMCI - SEA
1 stop27h 53mMultiple Airlines
Deal found 6/10$279

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 June 12, 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

Wed 9/24

12:40 am-8:44 am

1 stop6h 04m

Lambert-St Louis

Sun 9/28

6:59 pm-12:09 am

1 stop7h 10m

$229

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Sun 8/3

10:40 pm-7:45 am

1 stop7h 05m

Lambert-St Louis

Fri 8/8

4:40 pm-12:15 am

1 stop9h 35m

$233

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Thu 11/6

3:45 pm-1:34 pm

1 stop19h 49m

Lambert-St Louis

Sun 11/9

2:19 pm-3:00 pm

1 stop26h 41m

$248

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Thu 7/31

6:06 pm-11:59 pm

Nonstop3h 53m

Lambert-St Louis

Tue 8/5

3:24 pm-5:50 pm

Nonstop4h 26m

$249

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Wed 8/13

6:34 am-4:56 pm

1 stop8h 22m

Lambert-St Louis

Mon 8/18

3:53 pm-10:00 pm

1 stop8h 07m

$253

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Thu 7/3

12:20 am-10:40 am

1 stop8h 20m

Lambert-St Louis

Tue 7/8

5:15 am-9:59 am

1 stop6h 44m

$258

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Sun 9/7

8:34 pm-7:03 pm

1 stop20h 29m

Kansas City

Fri 9/12

7:48 pm-12:31 am

1 stop6h 43m

$261

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Tue 8/26

12:45 am-1:22 pm

1 stop10h 37m

Kansas City

Sun 9/7

6:15 pm-10:59 pm

1 stop6h 44m

$262

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Fri 8/1

5:30 pm-6:25 pm

1 stop22h 55m

Kansas City

Tue 8/5

2:32 pm-4:25 pm

1 stop27h 53m

$266

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Thu 8/14

11:59 pm-11:30 am

1 stop9h 31m

Lambert-St Louis

Sun 8/17

8:00 am-10:50 pm

1 stop16h 50m

$275

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 54 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, 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 June 12, 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 June 12, 2025.

The most flights from SEA to USMO are scheduled on a Thursday (17 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 on average).

Rainfall in Missouri by month

Plan your trip to Missouri by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Missouri ranges from 1.1 - 5.2 inches per month. May is typically the wettest month, when rainfall can reach 5.2 in. January is typically the driest time to visit Missouri when rainfall is around 1.1 in.

Temperature in Missouri by month

Plan your trip to Missouri by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Missouri, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from Seattle to Missouri, such as Alaska Airlines, Southwest and Delta. 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

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

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.

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

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $109. However, be on the lookout for offers from Frontier and Delta, 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 Hawaiian Airlines (85%), Alaska Airlines (83%) or Air Tahiti Nui (83%) 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 $124. While the most popular route (Seattle/Tacoma Intl - Kansas City) can be booked for $266 on average our data indicates $311 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.

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$230FlexibilityNo cancel feeOn-time62%
DeltaCheapest$141Average$326FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$171Average$311FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$186Average$540FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$188Average$431FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$204Average$453FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$216Average$469FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$218Average$412FlexibilityNo cancel feeOn-time85%

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