HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Washington, D.C.

$53+ Cheap flights from Missouri to Washington, D.C. (WAS)

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — WAS
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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

Keep the following information in mind while searching for Missouri to Washington, D.C. flight deals. Data was last updated July 3, 2025.

Round-trip from

$115
(Priceline)

One-way from

$53
(Priceline)

Popular in

March

Cheapest in

November

Average price

$347

Good round-trip deal

$253 or less

Good one-way deal

$114 or less
From Missouri to Washington, D.C. (WAS)
Search Deals
One-way flight from Missouri to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Missouri to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from Missouri to Washington, D.C. (WAS).
Search Deals

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

Cheapest flights from Missouri to Washington, D.C.
Explore the most affordable flight options available from Missouri to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Priceline deal was found by Cheapflights users on 7/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2510:39 amSTL - BWI
1 stop6h 26mFrontier
Mon 9/296:25 amBWI - STL
1 stop9h 39mFrontier
Deal found 7/1$115
This FlightHub deal was found by Cheapflights users on 7/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/182:30 pmSTL - BWI
1 stop6h 39mSpirit Airlines
Wed 8/202:30 pmBWI - STL
1 stop24h 02mSpirit Airlines
Deal found 7/3$135
This Expedia deal was found by Cheapflights users on 7/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/182:30 pmSTL - BWI
1 stop6h 39mMultiple Airlines
Mon 8/256:10 amBWI - STL
1 stop7h 46mMultiple Airlines
Deal found 7/3$149
This Priceline deal was found by Cheapflights users on 6/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/24:56 pmMCI - BWI
1 stop6h 21mMultiple Airlines
Mon 10/61:59 pmBWI - MCI
1 stop10h 09mMultiple Airlines
Deal found 6/30$157
This American Airlines deal was found by Cheapflights users on 7/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/24:36 pmSTL - BWI
1 stop4h 53mAmerican Airlines
Mon 10/66:13 pmBWI - STL
1 stop6h 41mAmerican Airlines
Deal found 7/3$177
This Southwest deal was found by Cheapflights users on 7/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/24:55 pmSTL - BWI
Nonstop2h 00mSouthwest
Mon 10/67:30 pmBWI - STL
Nonstop2h 15mSouthwest
Deal found 7/3$197
This Southwest deal was found by Cheapflights users on 7/1. 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 8/512:05 pmMCI - BWI
Nonstop2h 30mSouthwest
Tue 8/56:20 pmBWI - MCI
Nonstop2h 40mSouthwest
Deal found 7/1$197
This Southwest deal was found by Cheapflights users on 7/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/287:50 amSTL - DCA
1 stop4h 00mSouthwest
Sun 8/316:55 amDCA - STL
Nonstop2h 10mSouthwest
Deal found 7/3$198
This Cheapflightsfares deal was found by Cheapflights users on 7/1. 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.
Sat 9/65:30 amMCI - BWI
1 stop6h 34mSpirit Airlines
Wed 9/101:59 pmBWI - MCI
1 stop10h 09mSpirit Airlines
Deal found 7/1$202
This Delta deal was found by Cheapflights users on 7/1. 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.
Tue 8/57:00 amMCI - BWI
1 stop4h 47mDelta
Tue 8/56:25 pmBWI - MCI
1 stop5h 31mDelta
Deal found 7/1$207
This Delta deal was found by Cheapflights users on 7/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/286:00 amSTL - DCA
1 stop4h 20mDelta
Sun 8/3112:20 pmDCA - STL
1 stop4h 46mDelta
Deal found 7/3$208
This Priceline deal was found by Cheapflights users on 7/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/312:36 pmSTL - IAD
1 stop8h 36mFrontier
Sun 8/311:02 amIAD - STL
1 stop8h 57mFrontier
Deal found 7/1$209

Cheapflights Fare Finder

Customize your flight search to find flights from Missouri to Washington, D.C. 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 July 3, 2025.
Use the filters below to find and compare flights from Missouri to Washington, D.C. that are best for you.

Fly from

Missouri

Fly to

Washington, D.C.

Route

Depart

Return

Price

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Thu 9/25

10:39 am-6:05 pm

1 stop6h 26m

Baltimore/Washington

Mon 9/29

6:25 am-3:04 pm

1 stop9h 39m

$115

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 8/18

2:30 pm-10:09 pm

1 stop6h 39m

Baltimore/Washington

Wed 8/20

2:30 pm-1:32 pm

1 stop24h 02m

$135

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 8/18

2:30 pm-10:09 pm

1 stop6h 39m

Baltimore/Washington

Mon 8/25

6:10 am-12:56 pm

1 stop7h 46m

$149

Kansas CityBaltimore

MCI - BWI

MCIBWI

Kansas City

Thu 10/2

4:56 pm-12:17 am

1 stop6h 21m

Baltimore/Washington

Mon 10/6

1:59 pm-11:08 pm

1 stop10h 09m

$157

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Wed 9/24

9:57 am-5:41 pm

1 stop6h 44m

Baltimore/Washington

Mon 9/29

6:21 pm-11:48 pm

1 stop6h 27m

$177

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Tue 8/5

2:15 pm-5:20 pm

Nonstop2h 05m

Baltimore/Washington

Tue 8/12

8:20 am-9:35 am

Nonstop2h 15m

$197

Kansas CityBaltimore

MCI - BWI

MCIBWI

Kansas City

Tue 8/5

12:05 pm-3:35 pm

Nonstop2h 30m

Baltimore/Washington

Tue 8/5

6:20 pm-8:00 pm

Nonstop2h 40m

$197

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Thu 8/28

7:50 am-12:50 pm

1 stop4h 00m

Washington, D.C. Reagan-National

Sun 8/31

6:55 am-8:05 am

Nonstop2h 10m

$198

Kansas CityBaltimore

MCI - BWI

MCIBWI

Kansas City

Sat 9/6

5:30 am-1:04 pm

1 stop6h 34m

Baltimore/Washington

Wed 9/10

1:59 pm-11:08 pm

1 stop10h 09m

$202

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Wed 8/27

1:30 pm-9:15 pm

1 stop6h 45m

Baltimore/Washington

Wed 9/3

5:40 am-9:15 am

1 stop4h 35m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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

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

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

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

Currently, August is the cheapest month in which you can book a flight from Missouri to Washington, D.C. (average of $309). Flying from Missouri to Washington, D.C. in July is currently the most expensive (average of $345). 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 MO to WAS?

Find hourly flight availability from Missouri to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missouri to Washington, D.C. as you normally would.

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

Explore weekly flight availability from Missouri to Washington, D.C.. 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 July 3, 2025.

The most flights from USMO to WAS are scheduled on a Thursday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated July 3, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Missouri to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Crew

8.6

Overall

8.0

Entertainment

7.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,266 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Crew

8.6

Overall

8.0

Entertainment

7.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,982 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Crew

8.6

Overall

8.0

Entertainment

7.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,861 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Crew

8.6

Overall

8.0

Entertainment

7.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Allegiant Air
7.3
Good
708 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Crew

8.6

Overall

8.0

Entertainment

7.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Crew

8.6

Overall

8.0

Entertainment

7.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

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

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

    The cheapest airlines for a one-way flight from Missouri to Washington, D.C. are Frontier ($53), Spirit Airlines ($66), and American Airlines ($89).

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

    When deciding which route to take from Missouri to Washington, D.C. consider Kansas City - Washington, D.C. Dulles Intl, Lambert-St Louis - Washington, D.C. Dulles Intl or Kansas City - Baltimore/Washington as they are the most popular.

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

    Consider Avianca (73%), Copa Airlines (73%) or GoJet (70%) when booking your flight. These represent the most reliable airlines when flying from Missouri to Washington, D.C..

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

    While on average a flight from Missouri to Washington, D.C. is generally $1,331, our data shows the cheapest flight currently is $149. When looking at the most popular route, (Kansas City - Washington, D.C. Dulles Intl), you can expect to pay $203 for that flight.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Missouri to Washington, D.C. (average of $309). Flying from Missouri to Washington, D.C. in July is currently the most expensive (average of $345). 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

Traveling to a place near Missouri?

Book flights to Missouri if you plan to visit one of these locations
Arlington
Woodbridge
Alexandria
Tysons
Silver Spring
Fredericksburg
Linthicum Heights
Gaithersburg
Fairfax
Easton
Towson
Waldorf
Laurel
Falls Church
Rockville
Springfield
National Harbor
Manassas
Dundalk
Bowie

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 Missouri to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Dulles Intl flights
Dallas/Fort Worth to Dulles Intl flights
Los Angeles to Reagan-National flights
Boston to Reagan-National flights
Atlanta to Dulles Intl flights
Orlando to Dulles Intl flights
San Francisco to Dulles Intl flights
Hobby to Reagan-National flights
O'Hare Intl to Reagan-National flights
Dallas/Fort Worth to Reagan-National flights
O'Hare Intl to Dulles Intl flights
Seattle to Dulles Intl flights
Tampa to Dulles Intl flights
San Francisco to Reagan-National flights
Boston to Dulles Intl flights
Hobby to Dulles Intl flights
Seattle to Reagan-National flights
Atlanta to Reagan-National flights
Miami to Dulles Intl flights
Denver to Dulles Intl flights
Minneapolis to Reagan-National flights
Miami to Reagan-National flights
Austin to Dulles Intl flights
Denver to Reagan-National flights
George Bush Intcntl to Reagan-National flights
Ontario to Dulles Intl flights
Minneapolis to Dulles Intl flights
George Bush Intcntl to Dulles Intl flights
Detroit to Dulles Intl flights
John F Kennedy Intl to Dulles Intl flights
Tampa to Reagan-National flights
Orlando to Reagan-National flights
Midway to Dulles Intl flights
John F Kennedy Intl to Reagan-National flights
San Diego to Dulles Intl flights
Charlotte to Dulles Intl flights
San Diego to Reagan-National flights
Newark to Dulles Intl flights
Portland to Reagan-National flights
LaGuardia to Reagan-National flights
Sky Harbor Intl to Dulles Intl flights
Detroit to Reagan-National flights
Newark to Reagan-National flights
San Antonio to Dulles Intl flights
Portland to Dulles Intl flights
LaGuardia to Dulles Intl flights
Charlotte to Reagan-National flights
Hartford to Dulles Intl flights
Ontario to Reagan-National flights
Jacksonville to Dulles Intl flights

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

Discover the top 6 airlines that operate flights from Missouri to Washington, D.C.. 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$111Average$201FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$129Average$406FlexibilityNo cancel feeOn-time71%
Spirit AirlinesCheapest$135Average$308FlexibilityNo cancel feeOn-time65%
DeltaCheapest$176Average$309FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$201Average$358FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$209Average$399FlexibilityNo 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.