Washington, D.C.

$78+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
STL — WAS
Apr 2 — Apr 91
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 March 28, 2025.

Round-trip from

$177
(Southwest)

One-way from

$78
(Mytrip)

Good round-trip deal

$253 or less

Good one-way deal

$123 or less
From Missouri to Washington, D.C. (WAS)
One-way flight from Missouri to Washington, D.C. (WAS)
Price to beat on a round-trip flight from Missouri to Washington, D.C. (WAS).
Price to beat on a one-way flight from Missouri to Washington, D.C. (WAS).

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 March 28, 2025.

This Southwest deal was found by Cheapflights users on 3/27. 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 4/245:45 amSTL - BWI
Nonstop2h 00mSouthwest
Thu 5/19:30 pmBWI - STL
Nonstop2h 15mSouthwest
Deal found 3/27$177
This Mytrip deal was found by Cheapflights users on 3/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/910:51 amMCI - BWI
1 stop4h 02mSpirit Airlines
Sun 5/115:15 pmBWI - MCI
1 stop17h 41mSpirit Airlines
Deal found 3/26$179
This American Airlines deal was found by Cheapflights users on 3/26. 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.
Wed 8/135:46 amSGF - BWI
1 stop4h 18mAmerican Airlines
Wed 8/2712:30 pmBWI - SGF
1 stop6h 11mAmerican Airlines
Deal found 3/26$199
This Booking.com deal was found by Cheapflights users on 3/27. 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.
Thu 4/246:10 pmSTL - BWI
1 stop5h 46mMultiple Airlines
Sun 4/275:08 pmBWI - STL
1 stop7h 56mMultiple Airlines
Deal found 3/27$202
This Southwest deal was found by Cheapflights users on 3/27. 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.
Wed 4/238:15 amSTL - DCA
1 stop5h 05mSouthwest
Sat 4/2612:35 pmDCA - STL
Nonstop2h 15mSouthwest
Deal found 3/27$207
This Delta deal was found by Cheapflights users on 3/27. 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 4/2512:51 pmSTL - BWI
1 stop6h 09mDelta
Mon 4/286:50 pmBWI - STL
1 stop5h 46mDelta
Deal found 3/27$207
This United Airlines deal was found by Cheapflights users on 3/27. 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 4/235:35 pmSTL - IAD
1 stop5h 24mUnited Airlines
Sat 4/268:35 amIAD - STL
Nonstop2h 23mUnited Airlines
Deal found 3/27$207
This Booking.com deal was found by Cheapflights users on 3/27. 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.
Tue 5/135:45 pmSTL - BWI
1 stop20h 50mFrontier
Sun 5/189:16 pmBWI - STL
1 stop27h 50mFrontier
Deal found 3/27$208
This Delta deal was found by Cheapflights users on 3/26. 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 4/267:10 amSTL - DCA
1 stop6h 49mDelta
Wed 4/306:00 amDCA - STL
1 stop4h 28mDelta
Deal found 3/26$217
This Delta deal was found by Cheapflights users on 3/26. 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 4/266:50 amSTL - IAD
1 stop3h 41mDelta
Mon 4/287:46 pmIAD - STL
1 stop4h 50mDelta
Deal found 3/26$217
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Wed 4/235:45 amSTL - DCA
1 stop7h 35mAmerican Airlines
Thu 4/248:22 amDCA - STL
Nonstop2h 30mAmerican Airlines
Deal found 3/27$220
This Mytrip deal was found by Cheapflights users on 3/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/246:10 pmSTL - BWI
1 stop5h 46mSpirit Airlines
Mon 4/287:40 pmBWI - STL
2 stops22h 35mSpirit Airlines
Deal found 3/27$234

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 March 28, 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 4/24

5:45 am-8:45 am

Nonstop2h 00m

Baltimore/Washington

Thu 5/1

9:30 pm-10:45 pm

Nonstop2h 15m

$177

Kansas CityBaltimore

MCI - BWI

MCIBWI

Kansas City

Fri 5/9

10:51 am-3:53 pm

1 stop4h 02m

Baltimore/Washington

Sun 5/11

5:15 pm-9:56 am

1 stop17h 41m

$179

SpringfieldBaltimore

SGF - BWI

SGFBWI

Springfield-Branson

Wed 8/13

5:46 am-11:04 am

1 stop4h 18m

Baltimore/Washington

Wed 8/27

12:30 pm-5:41 pm

1 stop6h 11m

$199

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Thu 4/24

6:10 pm-12:56 am

1 stop5h 46m

Baltimore/Washington

Sun 4/27

5:08 pm-12:04 am

1 stop7h 56m

$202

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Fri 4/25

12:51 pm-8:00 pm

1 stop6h 09m

Baltimore/Washington

Mon 4/28

6:50 pm-11:36 pm

1 stop5h 46m

$207

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Wed 4/23

1:12 pm-9:01 pm

1 stop6h 49m

Washington, D.C. Dulles Intl

Sat 4/26

8:35 am-9:58 am

Nonstop2h 23m

$207

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Wed 4/23

8:15 am-2:20 pm

1 stop5h 05m

Washington, D.C. Reagan-National

Sat 4/26

12:35 pm-1:50 pm

Nonstop2h 15m

$207

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Tue 5/13

5:45 pm-3:35 pm

1 stop20h 50m

Baltimore/Washington

Sun 5/18

9:16 pm-12:06 am

1 stop27h 50m

$208

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Wed 4/23

5:41 pm-4:35 pm

1 stop21h 54m

Washington, D.C. Dulles Intl

Sat 4/26

5:35 pm-12:04 am

1 stop7h 29m

$208

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Sat 4/26

7:10 am-2:59 pm

1 stop6h 49m

Washington, D.C. Reagan-National

Wed 4/30

6:00 am-9:28 am

1 stop4h 28m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

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 June is currently the most expensive (average of $385). 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 March 28, 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 March 28, 2025.

The most flights from USMO to WAS are scheduled on a Thursday (12 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 March 28, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Missouri to Washington, D.C. to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.6

Boarding

8.2

Food

7.1

Entertainment

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Crew

8.6

Boarding

8.2

Food

7.1

Entertainment

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Crew

8.6

Boarding

8.2

Food

7.1

Entertainment

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
8.0
Very good

Crew

8.6

Boarding

8.2

Food

7.1

Entertainment

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Crew

8.6

Boarding

8.2

Food

7.1

Entertainment

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Crew

8.6

Boarding

8.2

Food

7.1

Entertainment

7.6

Comfort

8.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 Spirit Airlines ($78), Southwest ($89), and United Airlines ($90).

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

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

    Consider Avianca (92%), Copa Airlines (92%) or GoJet (89%) 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 $2,249, our data shows the cheapest flight currently is $143. When looking at the most popular route, (Lambert-St Louis - Washington, D.C. Dulles Intl), you can expect to pay $187 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 June is currently the most expensive (average of $385). 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
Alexandria
Fairfax
Tysons
Springfield
Rockville
Woodbridge
Gaithersburg
Fredericksburg
Linthicum Heights
Silver Spring
Falls Church
Laurel
Easton
Herndon
Bowie
Gettysburg
National Harbor
Oxon Hill
Reston

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.

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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$98Average$176FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$129Average$404FlexibilityNo cancel feeOn-time71%
Spirit AirlinesCheapest$138Average$286FlexibilityNo cancel feeOn-time65%
DeltaCheapest$186Average$340FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$197Average$360FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$211Average$390FlexibilityNo 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.