HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Missouri

$59+ Cheap flights from Washington, D.C. (WAS) 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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — STL
Jun 7 — Jun 141
Sun 6/7
Sun 6/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. 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, D.C. to Missouri

Cheapest flights from Washington, D.C. to Missouri
Explore the most affordable flight options available from Washington, D.C. to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 8, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Thu 6/49:43 pm
BWI
-
MCI
1 stop20h 46m
Frontier
Wed 6/106:16 pm
MCI
-
BWI
1 stop12h 19m
Frontier
Deal found 5/5$121
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Thu 6/49:43 pm
BWI
-
STL
1 stop12h 12m
Frontier
Sat 6/65:27 pm
STL
-
BWI
1 stop13h 16m
Frontier
Deal found 5/5$123
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/296:28 am
BWI
-
MCI
1 stop11h 53m
Frontier
Wed 7/16:16 pm
MCI
-
BWI
1 stop12h 19m
Frontier
Deal found 5/6$124
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:52 am
BWI
-
STL
1 stop9h 41m
Frontier
Mon 6/85:27 pm
STL
-
BWI
1 stop13h 08m
Frontier
Deal found 5/4$124
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Thu 6/259:43 pm
BWI
-
MCI
1 stop20h 38m
Frontier
Mon 6/296:16 pm
MCI
-
BWI
1 stop12h 19m
Frontier
Deal found 5/7$125
This Kiwi.com deal was found by Cheapflights users on 5/3. 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.
Tue 5/269:13 pm
BWI
-
STL
1 stop12h 42m
Frontier
Mon 6/85:27 pm
STL
-
BWI
1 stop13h 08m
Frontier
Deal found 5/3$125
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/108:31 am
BWI
-
MCI
1 stop9h 50m
Frontier
Fri 6/126:16 pm
MCI
-
BWI
1 stop12h 29m
Frontier
Deal found 5/4$126
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/28:52 am
BWI
-
STL
1 stop9h 41m
Frontier
Thu 6/46:33 pm
STL
-
BWI
1 stop12h 10m
Frontier
Deal found 5/4$126
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/36:28 am
BWI
-
MCI
1 stop11h 53m
Frontier
Mon 7/66:16 pm
MCI
-
BWI
1 stop12h 20m
Frontier
Deal found 5/6$127
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Fri 6/129:32 pm
BWI
-
STL
1 stop12h 20m
Frontier
Tue 6/306:31 pm
STL
-
BWI
1 stop12h 04m
Frontier
Deal found 5/7$127
This Kiwi.com deal was found by Cheapflights users on 5/8. 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.
Mon 6/16:45 am
BWI
-
MCI
1 stop11h 44m
Frontier
Fri 6/56:24 pm
MCI
-
BWI
1 stop27h 33m
Frontier
Deal found 5/8$128
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Fri 6/129:32 pm
BWI
-
STL
1 stop12h 20m
Frontier
Fri 6/265:06 pm
STL
-
BWI
1 stop13h 39m
Frontier
Deal found 5/7$128

Find flight deals from Washington, D.C. to Missouri

Keep the following information in mind while searching for Washington, D.C. to Missouri flight deals. Data was last updated May 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$121
(Kiwi.com)

One-way from

$59
(Trip.com)

Popular in

March

Cheapest in

August

Average price

$339

Good round-trip deal

$322 or less

Good one-way deal

$179 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lambert-St Louis flights.
Search Deals
From Washington, D.C. (WAS) to Missouri
Search Deals
One-way flight from Washington, D.C. (WAS) to Missouri
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Missouri.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to Missouri.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 May 8, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Missouri that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Thu 5/28

6:08 am-12:20 pm

1 stop7h 12m

Lambert-St Louis

Tue 6/2

1:27 pm-6:43 pm

1 stop4h 16m

$271

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 6/3

6:10 am-12:11 pm

1 stop7h 01m

Lambert-St Louis

Wed 6/3

5:29 pm-12:59 am

1 stop6h 30m

$277

BaltimoreKansas City

BWI - MCI

BWIMCI

Baltimore/Washington

Thu 6/4

12:40 pm-2:15 pm

Nonstop2h 35m

Kansas City

Wed 6/10

4:50 pm-8:20 pm

Nonstop2h 30m

$300

BaltimoreSpringfield

BWI - SGF

BWISGF

Baltimore/Washington

Tue 6/2

7:00 am-11:27 am

1 stop5h 27m

Springfield-Branson

Tue 6/9

6:57 pm-12:40 am

1 stop4h 43m

$307

Washington, D.C.Springfield

IAD - SGF

IADSGF

Washington, D.C. Dulles Intl

Sun 5/24

1:25 pm-6:00 pm

1 stop5h 35m

Springfield-Branson

Sat 5/30

6:35 pm-12:59 am

1 stop5h 24m

$314

Washington, D.C.Springfield

IAD - SGF

IADSGF

Washington, D.C. Dulles Intl

Tue 6/9

12:37 pm-6:12 pm

1 stop6h 35m

Springfield-Branson

Mon 6/15

6:57 pm-12:44 am

1 stop4h 47m

$314

Washington, D.C.Springfield

IAD - SGF

IADSGF

Washington, D.C. Dulles Intl

Wed 10/7

6:00 am-11:11 am

1 stop6h 11m

Springfield-Branson

Sun 10/11

6:45 pm-12:05 am

1 stop4h 20m

$314

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Tue 9/8

10:05 am-2:38 pm

1 stop5h 33m

Lambert-St Louis

Fri 9/11

3:42 pm-12:10 am

1 stop7h 28m

$317
Quickest round-trip

Washington, D.C.Kansas City

DCA - MCI

DCAMCI

Washington, D.C. Reagan-National

Tue 7/21

6:55 am-8:35 am

Nonstop2h 40m

Kansas City

Sat 7/25

8:35 am-11:55 am

Nonstop2h 20m

$324

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sun 5/31

6:05 am-9:30 am

1 stop4h 25m

Lambert-St Louis

Wed 6/3

7:55 pm-11:00 pm

Nonstop2h 05m

$326

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/4

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Washington, D.C. to Missouri

Have a flexible travel schedule? Discover the best time to fly to Missouri from Washington, D.C. 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, D.C. to Missouri

How far ahead should I book a flight from Washington, D.C. to Missouri?

The best time to book flights from Washington, D.C. to Missouri is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. to Missouri?

Currently, December is the cheapest month in which you can book a flight from Washington, D.C. to Missouri (average of $78). Flying from Washington, D.C. to Missouri in October is currently the most expensive (average of $886). 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 WAS to MO?

Find hourly flight availability from Washington, D.C. 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 May 8, 2026.

It’s typically best to fly out from Washington, D.C. to Missouri at noon. Doing so could potentially save you 7% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Washington, D.C. to Missouri?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Missouri. Price data was last updated on May 2, 2026.

Travelers seeking maximum savings on their Washington, D.C. to Missouri flight should consider departing on Sunday at noon when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. to Missouri

Explore weekly flight availability from Washington, D.C. 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 May 8, 2026.

The most flights from WAS to USMO are scheduled on a Thursday (17 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

How much does it cost to fly round-trip from Washington, D.C. to Missouri?

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 May 8, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Washington, D.C. to Missouri. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,302 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

7.9

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
7.9
Good
4,302 reviews
Southwest
7.9
Good
4,302 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

7.9

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,456 reviews
Southwest
7.9
Good
4,302 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

7.9

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,694 reviews
Southwest
7.9
Good
4,302 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

7.9

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,667 reviews
Southwest
7.9
Good
4,302 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

7.9

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.6
Fair
2,962 reviews
Southwest
7.9
Good
4,302 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

7.9

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. to Missouri?

    Departing from Washington, D.C. to Missouri will take you 2h 35m. Airlines will cover a distance of 964 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Washington, D.C. to Missouri one-way?

    The cheapest airlines for a one-way flight from Washington, D.C. to Missouri are Frontier ($60), Southwest ($95), and American Airlines ($114).

  • What are the most popular routes from Washington, D.C. to Missouri?

    The most popular flight routes from Washington, D.C. to Missouri are Washington, D.C. Dulles Intl - Lambert-St Louis, Washington, D.C. Dulles Intl - Kansas City and Baltimore/Washington - Lambert-St Louis.

  • What are the most reliable airlines from Washington, D.C. to Missouri?

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. to Missouri consider choosing Republic Airways (100%), United Airlines (88%) or Avianca (83%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Washington, D.C. to Missouri?

    Looking at all options, your cheapest flight can be booked for $127. While the most popular route (Washington, D.C. Dulles Intl - Lambert-St Louis) can be booked for $207 on average, our data indicates $748 when flying from Washington, D.C. to Missouri.

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

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

  • How can I find direct flights from Washington, D.C. to Missouri?

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

  • Can I find deals for business class flights from Washington, D.C. to Missouri?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to Missouri?

    Currently, December is the cheapest month in which you can book a flight from Washington, D.C. to Missouri (average of $78). Flying from Washington, D.C. to Missouri in October is currently the most expensive (average of $886). 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, D.C. to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Dallas/Fort Worth flights
Dulles Intl to Seattle flights
Reagan-National to Seattle flights
Dulles Intl to Las Vegas flights
Reagan-National to Los Angeles flights
Reagan-National to Miami flights
Reagan-National to Dallas/Fort Worth flights
Dulles Intl to Orlando flights
Dulles Intl to Los Angeles flights
Dulles Intl to O'Hare Intl flights
Reagan-National to O'Hare Intl flights
Dulles Intl to Fort Lauderdale flights
Dulles Intl to Denver flights
Dulles Intl to Miami flights
Reagan-National to Las Vegas flights
Dulles Intl to San Francisco flights
Reagan-National to Orlando flights
Dulles Intl to Boston flights
Reagan-National to San Francisco flights
Reagan-National to Hobby flights
Dulles Intl to Atlanta flights
Reagan-National to Boston flights
Dulles Intl to Hobby flights
Dulles Intl to Midway flights
Dulles Intl to Tampa flights
Dulles Intl to New Orleans flights
Reagan-National to Fort Lauderdale flights
Dulles Intl to San Diego flights
Reagan-National to George Bush Intcntl flights
Dulles Intl to Salt Lake City flights
Reagan-National to Atlanta flights
Reagan-National to Nashville flights
Dulles Intl to Austin flights
Dulles Intl to George Bush Intcntl flights
Dulles Intl to Minneapolis flights
Reagan-National to Midway flights
Dulles Intl to Nashville flights
Dulles Intl to Sky Harbor Intl flights
Reagan-National to Denver flights
Dulles Intl to Portland flights
Dulles Intl to Ontario flights
Reagan-National to Salt Lake City flights
Reagan-National to Minneapolis flights
Reagan-National to Ontario flights
Reagan-National to Austin flights
Reagan-National to San Diego flights
Reagan-National to Love Field flights
Dulles Intl to Providence flights
Reagan-National to Sky Harbor Intl flights
Reagan-National to New Orleans flights

Top 6 airlines flying from Washington, D.C. to Missouri

Discover the top 6 airlines that operate flights from Washington, D.C. 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 May 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$72Average$195FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$111Average$231FlexibilityNo cancel feeOn-time65%
DeltaCheapest$124Average$337FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$178Average$389FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$203Average$394FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$230Average$446FlexibilityNo 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.
Site
©2026 Cheapflights