HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$55+ Cheap flights from Missouri to Seattle (SEA)

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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEA
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Missouri 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 Missouri to Seattle

Keep the following information in mind while searching for Missouri to Seattle flight deals. Data was last updated febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$207
(Delta)

One-way from

$55
(Frontier)

Good round-trip deal

$385 or less

Good one-way deal

$181 or less
Provider with most accurate pricing for Kansas City Downtown-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Kansas City Downtown-Seattle/Tacoma Intl flights.
Search Deals
From Missouri to Seattle/Tacoma Intl
Search Deals
One-way flight from Missouri to Seattle/Tacoma Intl
Search Deals
Price to beat on a round-trip flight from Missouri to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Missouri to Seattle/Tacoma Intl.
Search Deals

Find flight deals from Missouri to Seattle

Cheapest flights from Missouri to Seattle
Explore the most affordable flight options available from Missouri to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 20, 2025.

This Delta deal was found by Cheapflights users on 2/19. 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.
mié. 3/126:35 amMCI - SEA
Nonstop4h 08mDelta
vie. 3/285:30 pmSEA - MCI
Nonstop3h 30mDelta
Deal found 2/19$217
This CheapOair deal was found by Cheapflights users on 2/19. 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.
sáb. 3/298:35 pmMCI - SEA
1 stop17h 27mMultiple Airlines
jue. 4/39:48 amSEA - MCI
1 stop26h 23mMultiple Airlines
Deal found 2/19$218
This Mytrip deal was found by Cheapflights users on 2/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/52:30 pmMCI - SEA
1 stop23h 26mFrontier
vie. 4/111:56 pmSEA - MCI
1 stop21h 44mFrontier
Deal found 2/19$222
This Delta deal was found by Cheapflights users on 2/19. 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.
lun. 3/105:35 pmSTL - SEA
1 stop7h 57mDelta
vie. 3/145:30 amSEA - STL
1 stop5h 53mDelta
Deal found 2/19$229
This American Airlines deal was found by Cheapflights users on 2/20. 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.
dom. 3/306:29 pmSTL - SEA
1 stop6h 38mAmerican Airlines
mar. 4/112:59 amSEA - STL
1 stop7h 39mAmerican Airlines
Deal found 2/20$233
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
jue. 3/276:44 amSTL - SEA
Nonstop4h 30mAlaska Airlines
lun. 3/316:04 pmSEA - STL
Nonstop3h 55mAlaska Airlines
Deal found 2/19$237
This Southwest deal was found by Cheapflights users on 2/19. 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.
mié. 4/94:45 pmSTL - SEA
1 stop8h 45mSouthwest
lun. 4/285:35 amSEA - STL
2 stops8h 15mSouthwest
Deal found 2/19$238
This CheapOair deal was found by Cheapflights users on 2/18. 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.
dom. 5/49:55 pmSTL - SEA
1 stop22h 05mFrontier
mar. 5/136:00 amSEA - STL
1 stop25h 09mFrontier
Deal found 2/18$240
This Trip.com deal was found by Cheapflights users on 2/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/46:51 pmSTL - SEA
1 stop22h 35mMultiple Airlines
dom. 4/66:04 pmSEA - STL
Nonstop3h 55mMultiple Airlines
Deal found 2/18$246
This Hawaiian Airlines deal was found by Cheapflights users on 2/19. 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.
jue. 3/137:00 amSTL - SEA
Nonstop4h 35mHawaiian Airlines
mié. 3/196:04 pmSEA - STL
Nonstop3h 55mHawaiian Airlines
Deal found 2/19$247
This United Airlines deal was found by Cheapflights users on 2/19. 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.
sáb. 3/225:12 pmMCI - SEA
1 stop7h 49mUnited Airlines
sáb. 3/295:15 amSEA - MCI
1 stop5h 39mUnited Airlines
Deal found 2/19$251
This United Airlines deal was found by Cheapflights users on 2/19. 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.
dom. 8/315:30 amSTL - SEA
1 stop6h 29mUnited Airlines
mié. 9/1011:59 pmSEA - STL
1 stop8h 28mUnited Airlines
Deal found 2/19$259

Find flights from Missouri to Seattle within your budget

Customize your flight search to find flights from Missouri 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 febrero 20, 2025.

Fly from

Missouri

Fly to

Seattle

Route

Depart

Return

Price

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

sáb. 3/8

6:45 am-8:55 am

Nonstop4h 10m

Seattle/Tacoma Intl

dom. 3/16

5:30 am-1:20 pm

1 stop5h 50m

$207

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

dom. 4/27

8:40 pm-12:44 am

1 stop6h 04m

Seattle/Tacoma Intl

lun. 5/5

6:00 am-7:51 pm

1 stop11h 51m

$210

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

sáb. 3/8

8:35 pm-11:02 am

1 stop16h 27m

Seattle/Tacoma Intl

lun. 3/17

12:41 pm-10:35 am

1 stop19h 54m

$218

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

mar. 4/22

5:43 pm-11:09 pm

1 stop7h 26m

Seattle/Tacoma Intl

vie. 4/25

12:59 am-9:48 am

1 stop6h 49m

$222

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

lun. 3/10

5:35 pm-11:32 pm

1 stop7h 57m

Seattle/Tacoma Intl

vie. 3/14

5:30 am-1:23 pm

1 stop5h 53m

$229

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

dom. 3/30

6:29 pm-11:07 pm

1 stop6h 38m

Seattle/Tacoma Intl

mar. 4/1

12:59 am-10:38 am

1 stop7h 39m

$233

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

jue. 3/27

6:44 am-9:14 am

Nonstop4h 30m

Seattle/Tacoma Intl

lun. 3/31

6:04 pm-11:59 pm

Nonstop3h 55m

$237

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

mié. 4/9

4:45 pm-11:30 pm

1 stop8h 45m

Seattle/Tacoma Intl

lun. 4/28

5:35 am-3:50 pm

2 stops8h 15m

$238

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

dom. 5/4

9:55 pm-6:00 pm

1 stop22h 05m

Seattle/Tacoma Intl

mar. 5/13

6:00 am-9:09 am

1 stop25h 09m

$240

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

vie. 4/4

6:51 pm-3:26 pm

1 stop22h 35m

Seattle/Tacoma Intl

dom. 4/6

6:04 pm-11:59 pm

Nonstop3h 55m

$246

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 42 results
1
2
3
...
5

Best time to book a flight from Missouri to Seattle

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

Travel insights for flights from Missouri to Seattle

Get recent, data-driven insights about flights from Missouri to Seattle including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Missouri to Seattle (average of $238). Flying from Missouri to Seattle in July is currently the most expensive (average of $411). 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 MO to SEA?

Find hourly flight availability from Missouri to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 20, 2025.

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

Weekly flight availability from Missouri to Seattle

Explore weekly flight availability from Missouri to Seattle. 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 febrero 20, 2025.

The most flights from USMO to SEA are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 febrero 20, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Missouri to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

Find useful and relevant information for your journey from Missouri to Seattle. 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 into for flights to Seattle from Missouri?

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

  • How popular is this Missouri to Seattle flight route?

    The Missouri to Seattle/Tacoma Intl flight path was viewed by 43 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 Missouri to Seattle one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $55. Delta flights start at $79 while deals on Alaska Airlines start at $109 one-way.

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

    While some choose either Kansas City - Seattle/Tacoma Intl or Springfield-Branson - Seattle/Tacoma Intl, Lambert-St Louis - Seattle/Tacoma Intl is the most popular route from Missouri to Seattle.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Missouri to Seattle on time: Japan Airlines (80%), Qatar Airways (77%), Hawaiian Airlines (76%).

  • What are the cheapest flights from Missouri to Seattle?

    While on average a flight from Missouri to Seattle is generally $1,175, our data shows the cheapest flight currently is $148. When looking at the most popular route, (Lambert-St Louis - Seattle/Tacoma Intl), you can expect to pay $150 for that flight.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Missouri to Seattle (average of $238). Flying from Missouri to Seattle in July is currently the most expensive (average of $411). 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 Missouri?

Book flights to Missouri if you plan to visit one of these locations
SeaTac
Tukwila
Renton
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Federal Way
Centralia
Marysville
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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 Missouri to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Seattle flights
Los Angeles to Seattle flights
San Francisco to Seattle flights
Newark to Seattle flights
John F Kennedy Intl to Seattle flights
O'Hare Intl to Seattle flights
Reagan-National to Seattle flights
Hobby to Seattle flights
Minneapolis to Seattle flights
Atlanta to Seattle flights
Boston to Seattle flights
San Diego to Seattle flights
Ontario to Seattle flights
Dulles Intl to Seattle flights
Denver to Seattle flights
Baltimore to Seattle flights
Los Angeles to Portland flights
Philadelphia to Seattle flights
George Bush Intcntl to Seattle flights
Santa Ana to Seattle flights
Sky Harbor Intl to Seattle flights
San Jose to Seattle flights
Detroit to Seattle flights
LaGuardia to Seattle flights
Orlando to Seattle flights
Raleigh to Seattle flights
Burbank to Seattle flights
Tampa to Seattle flights
Sacramento to Seattle flights
Austin to Seattle flights
John F Kennedy Intl to Portland flights
Oakland to Seattle flights
Dallas/Fort Worth to Portland flights
St. Louis to Seattle flights
Salt Lake City to Seattle flights
Newark to Portland flights
O'Hare Intl to Portland flights
Milwaukee to Seattle flights
Midway to Seattle flights
Minneapolis to Portland flights
Indianapolis to Seattle flights
Honolulu to Seattle flights
Love Field to Seattle flights
Cincinnati to Seattle flights
Cleveland to Seattle flights
Burbank to Portland flights
Ontario to Portland flights
San Francisco to Portland flights
San Francisco to Everett flights
Miami to Seattle flights

Top 7 airlines flying from Missouri to Seattle

Discover the top 7 airlines that operate flights from Missouri 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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$204FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$125Average$205FlexibilityNo cancel feeOn-time65%
DeltaCheapest$160Average$294FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$201Average$524FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$215Average$527FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$216Average$480FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$266Average$435FlexibilityNo cancel feeOn-time63%
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.