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$61+ Cheap flights from Washington 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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Find flight deals from Washington to Missouri

Cheapest flights from Washington to Missouri
Explore the most affordable flight options available from Washington to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/6. 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.
Wed 12/177:16 amPDX - MCI
Nonstop3h 24mAlaska Airlines
Mon 1/54:56 pmMCI - PDX
Nonstop4h 06mAlaska Airlines
Deal found 11/6$177
This Southwest deal was found by Cheapflights users on 11/5. 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.
Fri 12/125:30 amPDX - MCI
1 stop5h 50mSouthwest
Tue 12/166:05 pmMCI - PDX
1 stop6h 25mSouthwest
Deal found 11/5$182
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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.
Wed 12/177:16 amPDX - MCI
Nonstop3h 24mAlaska Airlines
Fri 1/92:45 pmMCI - PDX
1 stop8h 02mAlaska Airlines
Deal found 11/6$187
This Southwest deal was found by Cheapflights users on 11/6. 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.
Fri 12/198:55 pmPDX - MCI
1 stop10h 00mSouthwest
Tue 1/66:05 amMCI - PDX
1 stop6h 45mSouthwest
Deal found 11/6$192
This Delta deal was found by Cheapflights users on 11/5. 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.
Fri 12/122:23 pmPDX - MCI
1 stop6h 59mDelta
Sun 12/143:55 pmMCI - PDX
1 stop9h 01mDelta
Deal found 11/5$197
This Alaska Airlines deal was found by Cheapflights users on 11/5. 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.
Wed 12/37:16 amPDX - MCI
Nonstop3h 24mAlaska Airlines
Wed 12/106:55 amMCI - PDX
1 stop8h 55mAlaska Airlines
Deal found 11/5$207
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 12/127:16 amPDX - MCI
Nonstop3h 24mAlaska Airlines
Tue 12/166:55 amMCI - PDX
1 stop8h 55mAlaska Airlines
Deal found 11/5$215
This Alaska Airlines deal was found by Cheapflights users on 11/5. 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.
Sun 12/147:16 amPDX - MCI
Nonstop3h 24mAlaska Airlines
Sat 12/204:56 pmMCI - PDX
Nonstop4h 06mAlaska Airlines
Deal found 11/5$217
This Delta deal was found by Cheapflights users on 11/4. 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.
Fri 12/511:59 pmSEA - MCI
1 stop8h 01mDelta
Sun 12/76:40 amMCI - SEA
1 stop6h 14mDelta
Deal found 11/4$219
This Mytrip deal was found by Cheapflights users on 11/5. 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.
Mon 11/243:59 pmPDX - MCI
1 stop25h 35mFrontier
Thu 12/48:09 pmMCI - PDX
1 stop17h 47mFrontier
Deal found 11/5$220
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Wed 12/39:05 amSEA - MCI
2 stops9h 42mUnited Airlines
Wed 12/105:10 pmMCI - SEA
1 stop6h 36mUnited Airlines
Deal found 11/4$222
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Wed 12/35:00 amPDX - MCI
1 stop5h 30mUnited Airlines
Wed 12/106:00 amMCI - PDX
2 stops10h 47mUnited Airlines
Deal found 11/5$222

Cheap flight deals from Washington to Missouri

Keep the following information in mind while searching for Washington to Missouri flight deals. Data was last updated November 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$177
(Delta)

One-way from

$61
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$383

Good round-trip deal

$277 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 Washington to Missouri
Search Deals
One-way flight from Washington to Missouri
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($18 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 November 2025
Search Deals
Price to beat on a round-trip flight from Washington to Missouri.
Search Deals
Price to beat on a one-way flight from Washington to Missouri.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 November 6, 2025.
Use the filters below to find and compare flights from Washington to Missouri that are best for you.

Fly from

Washington

Fly to

Missouri

Route

Depart

Return

Price

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Thu 12/11

2:23 pm-11:22 pm

1 stop6h 59m

Kansas City

Tue 12/16

2:20 pm-6:14 pm

1 stop5h 54m

$187

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Fri 1/30

9:00 am-8:33 pm

2 stops9h 33m

Kansas City

Sun 2/1

5:45 am-9:55 am

1 stop6h 10m

$224

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Thu 12/25

2:56 pm-12:13 am

1 stop7h 17m

Kansas City

Wed 12/31

4:56 pm-7:02 pm

Nonstop4h 06m

$227

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Sat 12/13

11:52 am-5:27 pm

Nonstop3h 35m

Kansas City

Tue 12/16

6:55 am-9:07 am

Nonstop4h 12m

$228

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Sat 12/6

11:52 am-5:27 pm

Nonstop3h 35m

Kansas City

Mon 12/8

6:55 am-9:07 am

Nonstop4h 12m

$228

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Fri 12/12

6:32 pm-11:58 pm

Nonstop3h 26m

Kansas City

Sun 12/14

2:50 pm-5:00 pm

Nonstop4h 10m

$228

SpokaneSt. Louis

GEG - STL

GEGSTL

Spokane

Thu 12/4

12:08 pm-10:14 am

1 stop20h 06m

Lambert-St Louis

Tue 12/9

3:30 pm-11:13 am

2 stops45h 43m

$235

SpokaneSt. Louis

GEG - STL

GEGSTL

Spokane

Thu 12/4

1:10 pm-12:48 am

2 stops9h 38m

Lambert-St Louis

Tue 12/9

12:49 pm-8:56 pm

2 stops10h 07m

$236

SpokaneSt. Louis

GEG - STL

GEGSTL

Spokane

Thu 12/4

1:10 pm-12:48 am

2 stops9h 38m

Lambert-St Louis

Wed 12/10

6:15 am-2:55 pm

2 stops10h 40m

$236

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Sat 12/6

9:10 am-7:40 pm

2 stops8h 30m

Lambert-St Louis

Sun 12/7

2:30 pm-8:00 pm

1 stop7h 30m

$242

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

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

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

What is the cheapest month to book a flight from State of Washington to Missouri?

Currently, January is the cheapest month in which you can book a flight from State of Washington to Missouri (average of $61). Flying from State of Washington 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 WA to MO?

Find hourly flight availability from Washington 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 November 6, 2025.

It’s typically best to fly out from State of Washington to Missouri in the evening. Doing so could potentially save you 14% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from State of Washington to Missouri?

Use this chart to determine the cheapest time to fly round-trip from Washington to Missouri. Price data was last updated on December 16, 2024.

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

Weekly flight availability from State of Washington to Missouri

Explore weekly flight availability from Washington 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 November 6, 2025.

The most flights from USWA to USMO are scheduled on a Thursday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 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 November 6, 2025.
Read through reviews of airlines operating flights from Washington to Missouri, such as Alaska Airlines, Delta, and Hawaiian Airlines. 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
11,247 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

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
11,247 reviews
Alaska Airlines
8.0
Very good
11,247 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

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
8,001 reviews
Alaska Airlines
8.0
Very good
11,247 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

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
2,804 reviews
Alaska Airlines
8.0
Very good
11,247 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

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
9,007 reviews
Alaska Airlines
8.0
Very good
11,247 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

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
11,040 reviews
Alaska Airlines
8.0
Very good
11,247 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

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 Washington to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this State of Washington to Missouri flight route?

    This flight path from Washington 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 State of Washington to Missouri?

    Departing from State of Washington to Missouri will take you 6h 59m. Airlines will cover a distance of 1477 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from State of Washington to Missouri one-way?

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $79. United Airlines flights start at $84 while deals on Southwest start at $84 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Missouri?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Missouri (average of $61). Flying from State of Washington 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.

See more FAQs

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Alternative routes for Washington 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 Washington to Missouri

Discover the top 8 airlines that operate flights from Washington 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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$134Average$388FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$137Average$287FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$168Average$310FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$178Average$398FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$182Average$429FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$186Average$527FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$203Average$500FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$216Average$463FlexibilityNo cancel feeOn-time69%

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