HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Missouri

$84+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
ago. 30 — sep. 61
sáb. 8/30
sáb. 9/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington 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 Washington to Missouri

Keep the following information in mind while searching for Washington to Missouri flight deals. Data was last updated agosto 25, 2025.

Round-trip from

$171
(FlightHub)

One-way from

$84
(United Airlines)

Popular in

May

Cheapest in

January

Average price

$339

Good round-trip deal

$237 or less

Good one-way deal

$148 or less
From Washington to Missouri
Search Deals
One-way flight from Washington to Missouri
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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

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 agosto 25, 2025.

This FlightHub deal was found by Cheapflights users on 8/25. 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.
jue. 9/256:12 amSEA - STL
1 stop24h 54mFrontier
lun. 10/67:55 pmSTL - SEA
1 stop18h 12mFrontier
Deal found 8/25$171
This FlightHub deal was found by Cheapflights users on 8/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/107:00 amSEA - STL
1 stop24h 06mFrontier
mar. 9/167:55 pmSTL - SEA
1 stop29h 04mFrontier
Deal found 8/23$173
This Booking.com deal was found by Cheapflights users on 8/25. 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.
jue. 10/161:02 pmSEA - STL
1 stop18h 05mFrontier
lun. 10/207:52 pmSTL - SEA
1 stop18h 15mFrontier
Deal found 8/25$176
This SmartFares deal was found by Cheapflights users on 8/25. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/2010:30 amPDX - MCI
Nonstop3h 31mAlaska Airlines
sáb. 9/274:55 pmMCI - PDX
Nonstop3h 51mAlaska Airlines
Deal found 8/25$176
This Southwest deal was found by Cheapflights users on 8/25. 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. 9/245:35 amSEA - STL
1 stop6h 50mSouthwest
mié. 9/244:35 pmSTL - SEA
1 stop9h 30mSouthwest
Deal found 8/25$177
This Southwest deal was found by Cheapflights users on 8/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/236:45 amSEA - STL
2 stops8h 55mSouthwest
dom. 9/2811:10 amSTL - SEA
Nonstop4h 20mSouthwest
Deal found 8/23$178
This Southwest deal was found by Cheapflights users on 8/25. 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.
lun. 9/2211:10 pmSEA - STL
1 stop6h 25mSouthwest
vie. 9/262:25 pmSTL - SEA
Nonstop4h 20mSouthwest
Deal found 8/25$179
This Southwest deal was found by Cheapflights users on 8/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/166:45 amSEA - STL
2 stops8h 55mSouthwest
mar. 9/231:20 pmSTL - SEA
1 stop7h 20mSouthwest
Deal found 8/23$182
This Delta deal was found by Cheapflights users on 8/25. 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.
mar. 9/167:10 amSEA - STL
1 stop8h 52mDelta
vie. 9/197:00 pmSTL - SEA
1 stop6h 59mDelta
Deal found 8/25$183
This Cheapflightsfares deal was found by Cheapflights users on 8/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/308:21 pmPDX - MCI
1 stop11h 37mSpirit Airlines
mar. 11/42:55 pmMCI - PDX
1 stop6h 41mSpirit Airlines
Deal found 8/23$184
This FlightHub deal was found by Cheapflights users on 8/25. 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.
lun. 9/156:12 amSEA - STL
1 stop24h 54mFrontier
vie. 9/197:55 pmSTL - SEA
1 stop6h 35mFrontier
Deal found 8/25$186
This Delta deal was found by Cheapflights users on 8/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/1011:55 pmSEA - STL
1 stop6h 56mDelta
vie. 10/177:30 pmSTL - SEA
1 stop6h 29mDelta
Deal found 8/24$189

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 agosto 25, 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

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

sáb. 10/18

8:43 pm-9:07 am

1 stop10h 24m

Lambert-St Louis

lun. 10/20

7:52 pm-12:07 pm

1 stop18h 15m

$171

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

lun. 9/22

6:12 am-9:06 am

1 stop24h 54m

Lambert-St Louis

vie. 9/26

7:55 pm-8:39 pm

1 stop26h 44m

$171

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

sáb. 9/27

7:00 am-9:06 am

1 stop24h 06m

Lambert-St Louis

lun. 9/29

7:55 pm-10:59 pm

1 stop29h 04m

$171

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

jue. 9/25

6:12 am-9:06 am

1 stop24h 54m

Lambert-St Louis

lun. 10/6

7:55 pm-12:07 pm

1 stop18h 12m

$171

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

jue. 10/2

6:12 am-9:06 am

1 stop24h 54m

Lambert-St Louis

dom. 10/5

7:55 pm-12:30 am

1 stop6h 35m

$171

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

vie. 10/24

2:31 pm-9:07 am

1 stop16h 36m

Lambert-St Louis

dom. 10/26

7:52 pm-7:33 am

1 stop13h 41m

$171

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

lun. 10/20

8:43 pm-9:07 am

1 stop10h 24m

Lambert-St Louis

mié. 10/22

7:52 pm-12:07 pm

1 stop18h 15m

$171

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

sáb. 9/27

5:55 am-5:10 pm

1 stop9h 15m

Lambert-St Louis

lun. 9/29

2:25 pm-4:45 pm

Nonstop4h 20m

$173

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

mié. 9/10

7:00 am-9:06 am

1 stop24h 06m

Lambert-St Louis

lun. 9/15

7:55 pm-10:59 pm

1 stop29h 04m

$173

PortlandKansas City

PDX - MCI

PDXMCI

Portland

sáb. 9/20

10:30 am-4:01 pm

Nonstop3h 31m

Kansas City

sáb. 9/27

4:55 pm-6:46 pm

Nonstop3h 51m

$176

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/23

Showing 1-10 of 60 results
1
2
3
...
6

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, August is the cheapest month in which you can book a flight from State of Washington to Missouri (average of $311). Flying from State of Washington 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 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 agosto 25, 2025.

When flying from State of Washington to Missouri, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 agosto 25, 2025.

The most flights from USWA to USMO are scheduled on a Friday (18 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 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 agosto 25, 2025.
Read through reviews of airlines operating flights from Washington 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

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,243 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,940 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 4 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 31m. 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 United Airlines, which is currently one of the cheapest options available, starting at $84. Alaska Airlines flights start at $88 while deals on Frontier start at $88 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, August is the cheapest month in which you can book a flight from State of Washington to Missouri (average of $311). Flying from State of Washington 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.

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 Washington to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to O'Hare Intl flights
Dallas/Fort Worth to O'Hare Intl flights
Dallas/Fort Worth to LaGuardia flights
Dallas/Fort Worth to John F Kennedy Intl flights
Los Angeles to Newark flights
Newark to Fort Lauderdale flights
Los Angeles to Seattle flights
San Francisco to John F Kennedy Intl flights
John F Kennedy Intl to Las Vegas flights
Dallas/Fort Worth to Seattle flights
Dallas/Fort Worth to Las Vegas flights
Newark to O'Hare Intl flights
Newark to Las Vegas flights
Newark to Los Angeles flights
Seattle to Las Vegas flights
LaGuardia to O'Hare Intl flights
O'Hare Intl to John F Kennedy Intl flights
Newark to Miami flights
John F Kennedy Intl to Orlando flights
LaGuardia to Fort Lauderdale flights
John F Kennedy Intl to Miami flights
San Francisco to Newark flights
O'Hare Intl to Las Vegas flights
LaGuardia to Dallas/Fort Worth flights
O'Hare Intl to Dallas/Fort Worth flights
Dallas/Fort Worth to Los Angeles flights
John F Kennedy Intl to San Francisco flights
LaGuardia to Miami flights
Newark to Orlando flights
Los Angeles to Dallas/Fort Worth flights
Los Angeles to LaGuardia flights
Seattle to Los Angeles flights
Fort Lauderdale to LaGuardia flights
Fort Lauderdale to Newark flights
John F Kennedy Intl to Dallas/Fort Worth flights
O'Hare Intl to Newark flights
Los Angeles to Honolulu flights
O'Hare Intl to LaGuardia flights
Dallas/Fort Worth to Newark flights
San Francisco to Las Vegas flights
Miami to LaGuardia flights
Ontario to John F Kennedy Intl flights
Dallas/Fort Worth to Denver flights
Atlanta to LaGuardia flights
Seattle to Dallas/Fort Worth flights
John F Kennedy Intl to Fort Lauderdale flights
Atlanta to John F Kennedy Intl flights
LaGuardia to Orlando flights

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 agosto 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$253FlexibilityNo cancel feeOn-time62%
DeltaCheapest$137Average$404FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$168Average$310FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$186Average$532FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$188Average$444FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$210Average$499FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$216Average$489FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$217Average$400FlexibilityNo cancel feeOn-time85%

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.