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$57+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
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 October 23, 2025.

This Alaska Airlines deal was found by Cheapflights users on 10/21. 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.
Tue 11/1110:30 amPDX - MCI
Nonstop3h 24mAlaska Airlines
Tue 11/184:49 pmMCI - PDX
Nonstop3h 58mAlaska Airlines
Deal found 10/21$177
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 11/143:26 pmPDX - MCI
1 stop26h 07mFrontier
Thu 12/48:09 pmMCI - PDX
1 stop17h 47mFrontier
Deal found 10/23$180
This Delta deal was found by Cheapflights users on 10/23. 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.
Sat 11/156:29 amPDX - MCI
1 stop6h 26mDelta
Thu 12/46:40 amMCI - PDX
1 stop8h 14mDelta
Deal found 10/23$182
This Delta deal was found by Cheapflights users on 10/23. 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 11/1412:35 amPDX - MCI
1 stop7h 17mDelta
Sat 12/66:40 amMCI - PDX
1 stop8h 14mDelta
Deal found 10/23$183
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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.
Sat 11/156:00 amPDX - MCI
1 stop6h 02mAlaska Airlines
Wed 12/31:34 pmMCI - PDX
Nonstop4h 06mAlaska Airlines
Deal found 10/23$187
This Delta deal was found by Cheapflights users on 10/21. 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 11/192:11 pmSEA - MCI
1 stop7h 26mDelta
Wed 11/267:55 amMCI - SEA
Nonstop4h 13mDelta
Deal found 10/21$189
This Southwest deal was found by Cheapflights users on 10/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/125:50 amSEA - MCI
1 stop6h 50mSouthwest
Mon 12/153:25 pmMCI - SEA
1 stop7h 15mSouthwest
Deal found 10/20$191
This Kiwi.com deal was found by Cheapflights users on 10/23. 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.
Wed 11/1210:30 amPDX - MCI
Nonstop3h 24mAlaska Airlines
Sat 12/66:55 amMCI - PDX
1 stop7h 47mAlaska Airlines
Deal found 10/23$191
This Delta deal was found by Cheapflights users on 10/23. 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 11/1212:35 amPDX - MCI
1 stop7h 17mDelta
Thu 12/46:40 amMCI - PDX
1 stop8h 14mDelta
Deal found 10/23$192
This Delta deal was found by Cheapflights users on 10/23. 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 11/1212:35 amPDX - MCI
1 stop7h 17mDelta
Sat 12/66:22 pmMCI - PDX
1 stop6h 36mDelta
Deal found 10/23$193
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 11/143:26 pmPDX - MCI
1 stop26h 07mFrontier
Fri 12/52:48 pmMCI - PDX
2 stops20h 05mFrontier
Deal found 10/23$194
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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.
Fri 11/1410:30 amPDX - MCI
Nonstop3h 24mAlaska Airlines
Fri 12/51:34 pmMCI - PDX
Nonstop4h 06mAlaska Airlines
Deal found 10/23$197

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 October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$177
(Alaska Airlines)

One-way from

$57
(Southwest)

Popular in

December

Cheapest in

September

Average price

$343

Good round-trip deal

$257 or less

Good one-way deal

$178 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. 2% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 23, 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

Tue 11/11

10:30 am-3:54 pm

Nonstop3h 24m

Kansas City

Tue 11/18

4:49 pm-6:47 pm

Nonstop3h 58m

$177

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Sat 11/15

5:30 am-1:28 pm

1 stop5h 58m

Kansas City

Wed 12/3

3:55 pm-10:56 pm

1 stop9h 01m

$182

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Sat 11/15

10:30 am-3:54 pm

Nonstop3h 24m

Kansas City

Mon 11/17

4:49 pm-6:47 pm

Nonstop3h 58m

$187

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Wed 11/19

2:11 pm-11:37 pm

1 stop7h 26m

Kansas City

Wed 11/26

7:55 am-10:08 am

Nonstop4h 13m

$189

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Fri 12/12

5:50 am-2:40 pm

1 stop6h 50m

Kansas City

Mon 12/15

3:25 pm-8:40 pm

1 stop7h 15m

$191

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Wed 11/12

12:35 am-9:52 am

1 stop7h 17m

Kansas City

Wed 12/3

3:55 pm-10:56 pm

1 stop9h 01m

$192

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Sat 11/15

1:45 pm-8:52 pm

1 stop5h 07m

Kansas City

Fri 12/5

6:22 pm-12:04 am

1 stop7h 42m

$198

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Wed 12/17

7:05 am-3:50 pm

1 stop6h 45m

Kansas City

Mon 12/22

8:10 pm-12:55 am

1 stop6h 45m

$204

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Mon 11/17

1:38 pm-11:46 pm

1 stop8h 08m

Kansas City

Fri 11/21

4:57 pm-7:01 pm

Nonstop4h 04m

$207

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Sun 11/9

12:46 pm-11:37 pm

1 stop8h 51m

Kansas City

Wed 12/3

3:55 pm-10:56 pm

1 stop9h 01m

$208

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

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 October 23, 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.

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 October 23, 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
11,161 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

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
11,161 reviews
Alaska Airlines
8.0
Very good
11,161 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

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
7,982 reviews
Alaska Airlines
8.0
Very good
11,161 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

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
2,789 reviews
Alaska Airlines
8.0
Very good
11,161 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

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
8,995 reviews
Alaska Airlines
8.0
Very good
11,161 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

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
11,033 reviews
Alaska Airlines
8.0
Very good
11,161 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

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 3h 24m. 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 Southwest, which is currently one of the cheapest options available, starting at $57. Delta flights start at $89 while deals on Frontier start at $109 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 October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$134Average$283FlexibilityNo cancel feeOn-time62%
DeltaCheapest$134Average$398FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$168Average$310FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$178Average$398FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$182Average$430FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$188Average$527FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$205Average$498FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$216Average$474FlexibilityNo cancel feeOn-time69%

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