HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Missouri

$62+ 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
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

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 December 8, 2025.

This United Airlines deal was found by Cheapflights users on 12/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:45 pmPDX - STL
1 stop5h 37mUnited Airlines
Mon 1/53:10 pmSTL - PDX
1 stop9h 30mUnited Airlines
Deal found 12/6$249
This Delta deal was found by Cheapflights users on 12/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/146:29 amPDX - MCI
1 stop6h 31mDelta
Sat 12/205:59 pmMCI - PDX
1 stop6h 59mDelta
Deal found 12/6$298
This Trip.com deal was found by Cheapflights users on 12/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:29 amPDX - STL
1 stop9h 19mFrontier
Sun 12/1410:44 pmSTL - PDX
1 stop11h 52mFrontier
Deal found 12/6$331
This United Airlines deal was found by Cheapflights users on 12/5. 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.
Fri 12/1212:55 pmPDX - MCI
1 stop7h 35mUnited Airlines
Mon 12/159:02 amMCI - PDX
2 stops11h 39mUnited Airlines
Deal found 12/5$332
This American Airlines deal was found by Cheapflights users on 12/7. 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.
Sun 12/2111:59 pmPDX - STL
1 stop8h 51mAmerican Airlines
Tue 1/62:38 pmSTL - PDX
1 stop7h 15mAmerican Airlines
Deal found 12/7$333
This Southwest deal was found by Cheapflights users on 12/6. 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.
Thu 12/185:00 amPDX - MCI
1 stop7h 00mSouthwest
Sun 12/218:10 pmMCI - PDX
1 stop6h 20mSouthwest
Deal found 12/6$337
This Delta deal was found by Cheapflights users on 12/7. 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.
Mon 12/291:22 pmGEG - STL
1 stop6h 54mDelta
Mon 1/53:40 pmSTL - GEG
1 stop6h 14mDelta
Deal found 12/7$344
This Gotogate deal was found by Cheapflights users on 12/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:18 pmSEA - STL
1 stop15h 54mFrontier
Sun 12/1410:44 pmSTL - SEA
1 stop13h 22mFrontier
Deal found 12/7$346
This Southwest deal was found by Cheapflights users on 12/7. 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.
Thu 12/1810:25 amPDX - MCI
1 stop8h 15mSouthwest
Mon 12/225:35 amMCI - PDX
1 stop6h 20mSouthwest
Deal found 12/7$348
This Kiwi.com deal was found by Cheapflights users on 12/7. 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.
Sat 12/1312:48 pmSEA - STL
2 stops18h 59mFrontier
Sun 12/1410:44 pmSTL - SEA
1 stop13h 22mFrontier
Deal found 12/7$356
This Southwest deal was found by Cheapflights users on 12/6. 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.
Tue 12/1612:05 pmPDX - MCI
2 stops8h 10mSouthwest
Fri 12/195:35 amMCI - PDX
1 stop6h 20mSouthwest
Deal found 12/6$358
This United Airlines deal was found by Cheapflights users on 12/7. 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 12/108:30 amPDX - MCI
1 stop5h 35mUnited Airlines
Mon 12/153:25 pmMCI - PDX
1 stop8h 50mUnited Airlines
Deal found 12/7$361

Find flight deals from Washington to Missouri

Keep the following information in mind while searching for Washington to Missouri flight deals. Data was last updated December 8, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$187
(Alaska Airlines)

One-way from

$62
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$606

Good round-trip deal

$297 or less

Good one-way deal

$119 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. 10% potential increase in price ($47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 8, 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

Fri 3/6

10:53 am-4:22 pm

Nonstop3h 29m

Kansas City

Tue 3/10

5:16 pm-7:20 pm

Nonstop4h 04m

$187

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 1/8

12:05 pm-7:50 am

2 stops17h 45m

Lambert-St Louis

Wed 1/14

3:43 pm-11:04 am

1 stop21h 21m

$188

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Wed 2/4

11:25 am-10:15 pm

1 stop8h 50m

Kansas City

Wed 2/11

6:25 pm-10:15 pm

1 stop5h 50m

$197

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Mon 1/5

10:41 am-4:02 pm

Nonstop3h 21m

Kansas City

Thu 1/8

3:59 pm-5:57 pm

Nonstop3h 58m

$197

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Thu 1/15

9:39 am-3:05 pm

Nonstop3h 26m

Kansas City

Mon 1/19

3:59 pm-5:57 pm

Nonstop3h 58m

$197

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Fri 3/6

1:02 pm-11:29 pm

1 stop8h 27m

Kansas City

Tue 3/10

3:53 pm-10:23 pm

1 stop8h 30m

$207

PortlandKansas City

PDX - MCI

PDXMCI

Portland

Fri 3/6

3:45 pm-11:15 pm

1 stop5h 30m

Kansas City

Tue 3/10

1:56 pm-11:04 pm

2 stops11h 08m

$222

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Sat 1/17

7:52 pm-5:11 am

1 stop7h 19m

Lambert-St Louis

Mon 1/19

6:00 am-12:18 pm

1 stop8h 18m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Fri 1/9

1:39 pm-9:35 pm

1 stop5h 56m

Lambert-St Louis

Wed 1/14

6:10 am-12:46 pm

1 stop8h 36m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Sun 2/1

12:59 pm-10:00 pm

1 stop7h 01m

Lambert-St Louis

Sun 2/8

6:00 am-12:18 pm

1 stop8h 18m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

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, 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 $232). 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 December 8, 2025.

It’s typically best to fly out from State of Washington to Missouri in the afternoon. Doing so could potentially save you 16% 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 December 8, 2025.

The most flights from USWA to USMO are scheduled on a Monday (11 on average). You will have fewer flight options on Wednesday, 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 December 8, 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
11,419 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

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
11,419 reviews
Alaska Airlines
8.0
Very good
11,419 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

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
8,011 reviews
Alaska Airlines
8.0
Very good
11,419 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

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
2,818 reviews
Alaska Airlines
8.0
Very good
11,419 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

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
9,089 reviews
Alaska Airlines
8.0
Very good
11,419 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

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
11,045 reviews
Alaska Airlines
8.0
Very good
11,419 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

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 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 29m. 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 $74. Frontier flights start at $85 while deals on American Airlines 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, 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 $232). 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.
John F Kennedy Intl to Fort Lauderdale flights
John F Kennedy Intl to Miami flights
Los Angeles to John F Kennedy Intl flights
Newark to Fort Lauderdale flights
John F Kennedy Intl to Los Angeles flights
Newark to Miami flights
LaGuardia to Fort Lauderdale flights
LaGuardia to Miami flights
Dallas/Fort Worth to John F Kennedy Intl flights
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to Orlando flights
Los Angeles to Newark flights
Newark to West Palm Beach flights
John F Kennedy Intl to Dallas/Fort Worth flights
Dallas/Fort Worth to LaGuardia flights
John F Kennedy Intl to West Palm Beach flights
Newark to Las Vegas flights
Dallas/Fort Worth to Newark flights
Newark to Los Angeles flights
Seattle to Los Angeles flights
LaGuardia to Dallas/Fort Worth flights
Dallas/Fort Worth to Las Vegas flights
Atlanta to John F Kennedy Intl flights
O'Hare Intl to John F Kennedy Intl flights
Newark to Dallas/Fort Worth flights
O'Hare Intl to Dallas/Fort Worth flights
Newark to Orlando flights
San Francisco to John F Kennedy Intl flights
Atlanta to LaGuardia flights
Seattle to Las Vegas flights
O'Hare Intl to Las Vegas flights
John F Kennedy Intl to Atlanta flights
John F Kennedy Intl to Tampa flights
Dulles Intl to Miami flights
San Francisco to Las Vegas flights
Dallas/Fort Worth to Los Angeles flights
John F Kennedy Intl to San Francisco flights
Los Angeles to LaGuardia flights
Los Angeles to San Francisco flights
Los Angeles to Dallas/Fort Worth flights
Fort Lauderdale to John F Kennedy Intl flights
Dulles Intl to Dallas/Fort Worth flights
Seattle to Sky Harbor Intl flights
Dallas/Fort Worth to Seattle flights
Los Angeles to Seattle flights
Reagan-National to Miami flights
LaGuardia to Orlando flights
LaGuardia to Tampa flights
San Francisco to Newark flights
Minneapolis to Sky Harbor Intl 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 December 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$123Average$382FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$136Average$284FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$168Average$295FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$178Average$398FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$182Average$418FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$186Average$510FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$210Average$490FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$216Average$462FlexibilityNo cancel feeOn-time69%

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.