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Washington, D.C.

$70+ 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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
STL — WAS
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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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 junio 12, 2025.

Round-trip from

$140
(Mytrip)

One-way from

$70
(Mytrip)

Popular in

March

Cheapest in

November

Average price

$365

Good round-trip deal

$240 or less

Good one-way deal

$138 or less
From Missouri to Washington, D.C. (WAS)
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One-way flight from Missouri to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 6% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Missouri to Washington, D.C. (WAS).
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Price to beat on a one-way flight from Missouri to Washington, D.C. (WAS).
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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 junio 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/11. 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.
dom. 7/66:36 pmSTL - BWI
1 stop11h 28mSpirit Airlines
sáb. 7/2610:11 pmBWI - STL
1 stop12h 41mSpirit Airlines
Deal found 6/11$140
This Southwest deal was found by Cheapflights users on 6/10. 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. 11/196:05 amSTL - BWI
Nonstop2h 00mSouthwest
mié. 12/38:40 pmBWI - STL
Nonstop2h 20mSouthwest
Deal found 6/10$197
This American Airlines deal was found by Cheapflights users on 6/11. 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.
vie. 7/46:00 amSTL - DCA
Nonstop2h 05mAmerican Airlines
sáb. 7/122:58 pmDCA - STL
Nonstop2h 19mAmerican Airlines
Deal found 6/11$204
This Southwest deal was found by Cheapflights users on 6/10. 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.
jue. 7/316:10 amSTL - DCA
2 stops5h 25mSouthwest
lun. 8/48:00 amDCA - STL
Nonstop2h 10mSouthwest
Deal found 6/10$208
This Delta deal was found by Cheapflights users on 6/10. 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.
mié. 11/57:20 amSTL - IAD
1 stop5h 37mDelta
sáb. 11/86:10 amIAD - STL
1 stop4h 25mDelta
Deal found 6/10$208
This United Airlines deal was found by Cheapflights users on 6/11. 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.
vie. 8/15:30 pmSTL - DCA
1 stop4h 12mUnited Airlines
jue. 8/77:25 amDCA - STL
1 stop6h 02mUnited Airlines
Deal found 6/11$213
This United Airlines deal was found by Cheapflights users on 6/12. 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.
mié. 9/249:17 amSTL - IAD
1 stop5h 35mUnited Airlines
vie. 9/266:30 amIAD - STL
1 stop5h 19mUnited Airlines
Deal found 6/12$213
This American Airlines deal was found by Cheapflights users on 6/11. 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.
mié. 9/249:57 amSTL - BWI
1 stop6h 44mAmerican Airlines
lun. 9/296:14 amBWI - STL
1 stop4h 02mAmerican Airlines
Deal found 6/11$217
This Southwest deal was found by Cheapflights users on 6/10. 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.
jue. 11/137:05 amMCI - BWI
1 stop4h 20mSouthwest
jue. 11/135:45 pmBWI - MCI
1 stop6h 10mSouthwest
Deal found 6/10$217
This Frontier deal was found by Cheapflights users on 6/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/511:00 amSTL - BWI
1 stop4h 54mFrontier
sáb. 7/127:20 amBWI - STL
1 stop7h 39mFrontier
Deal found 6/11$221
This FlightHub deal was found by Cheapflights users on 6/10. 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.
dom. 9/147:39 pmMCI - BWI
1 stop10h 00mSpirit Airlines
vie. 9/195:42 pmBWI - MCI
1 stop24h 56mSpirit Airlines
Deal found 6/10$222
This Delta deal was found by Cheapflights users on 6/11. 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. 10/35:40 pmSTL - DCA
1 stop4h 39mDelta
mar. 10/77:00 amDCA - STL
1 stop6h 25mDelta
Deal found 6/11$223

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 junio 12, 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

dom. 7/6

6:36 pm-7:04 am

1 stop11h 28m

Baltimore/Washington

sáb. 7/26

10:11 pm-9:52 am

1 stop12h 41m

$140

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

mié. 9/10

9:45 am-12:45 pm

Nonstop2h 00m

Baltimore/Washington

mié. 9/24

8:40 pm-9:55 pm

Nonstop2h 15m

$197

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

lun. 6/30

7:20 pm-10:20 pm

Nonstop2h 00m

Washington, D.C. Reagan-National

jue. 7/3

12:00 pm-1:10 pm

Nonstop2h 10m

$204

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

mié. 11/5

7:20 am-1:57 pm

1 stop5h 37m

Washington, D.C. Dulles Intl

sáb. 11/8

6:10 am-9:35 am

1 stop4h 25m

$208

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

vie. 8/1

5:30 pm-10:42 pm

1 stop4h 12m

Washington, D.C. Reagan-National

jue. 8/7

7:25 am-12:27 pm

1 stop6h 02m

$213

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

mié. 9/24

9:17 am-3:52 pm

1 stop5h 35m

Washington, D.C. Dulles Intl

vie. 9/26

6:30 am-10:49 am

1 stop5h 19m

$213

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

sáb. 8/30

6:02 am-9:03 am

Nonstop2h 01m

Washington, D.C. Reagan-National

lun. 9/1

7:51 pm-9:02 pm

Nonstop2h 11m

$214

Kansas CityBaltimore

MCI - BWI

MCIBWI

Kansas City

jue. 11/13

7:05 am-12:25 pm

1 stop4h 20m

Baltimore/Washington

jue. 11/13

5:45 pm-10:55 pm

1 stop6h 10m

$217

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

sáb. 7/5

11:00 am-4:54 pm

1 stop4h 54m

Baltimore/Washington

sáb. 7/12

7:20 am-1:59 pm

1 stop7h 39m

$221

Kansas CityBaltimore

MCI - BWI

MCIBWI

Kansas City

dom. 9/14

7:39 pm-6:39 am

1 stop10h 00m

Baltimore/Washington

vie. 9/19

5:42 pm-5:38 pm

1 stop24h 56m

$222

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 60 results
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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 $241). Flying from Missouri to Washington, D.C. in March is currently the most expensive (average of $290). 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 junio 12, 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 junio 12, 2025.

The most flights from USMO to WAS are scheduled on a Monday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 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 junio 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Allegiant Air
7.3
Good
725 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • How popular is this Missouri to Washington, D.C. flight route?

    This flight path from Missouri to Washington, D.C. was viewed by 24 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • 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 ($70), American Airlines ($79), and United Airlines ($79).

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

    While on average a flight from Missouri to Washington, D.C. is generally $353, our data shows the cheapest flight currently is $147. When looking at the most popular route, (Kansas City - 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 $241). Flying from Missouri to Washington, D.C. in March is currently the most expensive (average of $290). 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
Woodbridge
Tysons
Silver Spring
Linthicum Heights
Fredericksburg
Gaithersburg
Fairfax
Falls Church
Easton
Herndon
Towson
Bowie
Rockville
Reston
National Harbor
Springfield
Manassas
Dundalk

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Alternative routes for Missouri to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
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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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$111Average$198FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$129Average$402FlexibilityNo cancel feeOn-time71%
Spirit AirlinesCheapest$138Average$310FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$163Average$407FlexibilityNo cancel feeOn-time69%
DeltaCheapest$176Average$313FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$197Average$356FlexibilityNo cancel feeOn-time63%

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