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$65+ 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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — STL
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap 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 September 15, 2025.

Round-trip from

$143
(CheapOair)

One-way from

$65
(American Airlines)

Popular in

January

Cheapest in

August

Average price

$349

Good round-trip deal

$259 or less

Good one-way deal

$148 or less
From Washington, D.C. (WAS) to Missouri
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One-way flight from Washington, D.C. (WAS) to Missouri
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Highest demand for flights based on searches. 11% potential increase in price ($47 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Washington, D.C. (WAS) to Missouri.
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Price to beat on a one-way flight from Washington, D.C. (WAS) to Missouri.
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Find 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 September 15, 2025.

This Gotogate deal was found by Cheapflights users on 9/13. 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.
Sat 10/1110:16 amBWI - STL
1 stop6h 22mFrontier
Mon 10/139:06 pmSTL - BWI
1 stop12h 14mFrontier
Deal found 9/13$143
This Frontier deal was found by Cheapflights users on 9/13. 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.
Sun 9/216:22 amBWI - STL
1 stop9h 42mFrontier
Mon 9/224:00 pmSTL - BWI
1 stop7h 17mFrontier
Deal found 9/13$144
This Frontier deal was found by Cheapflights users on 9/13. 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.
Thu 11/136:15 amBWI - STL
1 stop4h 57mFrontier
Fri 11/144:56 pmSTL - BWI
1 stop6h 17mFrontier
Deal found 9/13$145
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/28:14 pmBWI - MCI
1 stop21h 07mFrontier
Mon 10/65:15 pmMCI - BWI
1 stop22h 52mFrontier
Deal found 9/13$148
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 9/256:22 amBWI - STL
1 stop9h 42mFrontier
Mon 9/294:00 pmSTL - BWI
1 stop26h 07mFrontier
Deal found 9/13$150
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/2910:10 amBWI - MCI
1 stop6h 55mUnited Airlines
Fri 10/319:58 amMCI - BWI
1 stop6h 16mUnited Airlines
Deal found 9/15$151
This Frontier deal was found by Cheapflights users on 9/13. 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.
Thu 10/236:05 amBWI - MCI
1 stop5h 37mFrontier
Mon 10/2711:37 amMCI - BWI
1 stop11h 36mFrontier
Deal found 9/13$153
This CheapOair deal was found by Cheapflights users on 9/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:05 amBWI - STL
1 stop5h 32mFrontier
Sun 10/126:05 pmSTL - BWI
1 stop13h 29mFrontier
Deal found 9/14$157
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/106:09 pmBWI - STL
1 stop24h 53mFrontier
Mon 10/206:05 pmSTL - BWI
1 stop15h 15mFrontier
Deal found 9/13$158
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 10/277:45 pmBWI - MCI
1 stop5h 24mAmerican Airlines
Tue 10/285:38 pmMCI - BWI
1 stop4h 56mAmerican Airlines
Deal found 9/14$159
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 11/116:00 amBWI - STL
1 stop4h 35mAmerican Airlines
Wed 11/126:04 pmSTL - BWI
1 stop4h 31mAmerican Airlines
Deal found 9/14$159
This Booking.com deal was found by Cheapflights users on 9/15. 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 9/259:37 pmBWI - STL
1 stop16h 25mFrontier
Sun 9/2810:39 amSTL - BWI
1 stop6h 21mFrontier
Deal found 9/15$160

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 September 15, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Missouri that are best for you.

Fly from

Washington, D.C.

Fly to

Missouri

Route

Depart

Return

Price

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 10/23

6:05 am-10:37 am

1 stop5h 32m

Lambert-St Louis

Mon 10/27

6:05 pm-10:20 am

1 stop15h 15m

$143

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Tue 11/4

4:44 pm-10:04 pm

1 stop6h 20m

Lambert-St Louis

Fri 11/7

5:15 pm-12:41 am

1 stop6h 26m

$197

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Sat 10/11

6:00 am-12:35 pm

1 stop7h 35m

Lambert-St Louis

Wed 10/15

1:40 pm-6:41 pm

1 stop4h 01m

$197

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 2/24

4:12 pm-5:45 pm

Nonstop2h 33m

Lambert-St Louis

Wed 2/25

6:16 pm-9:30 pm

Nonstop2h 14m

$203

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 9/30

9:00 am-2:25 pm

1 stop6h 25m

Lambert-St Louis

Fri 10/3

8:15 pm-11:15 pm

Nonstop2h 00m

$213

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 10/14

7:00 am-9:07 am

1 stop27h 07m

Lambert-St Louis

Fri 10/24

7:52 pm-12:04 pm

1 stop15h 12m

$217

BaltimoreKansas City

BWI - MCI

BWIMCI

Baltimore/Washington

Mon 3/2

8:10 am-2:00 pm

1 stop6h 50m

Kansas City

Tue 3/3

5:00 pm-12:11 am

1 stop6h 11m

$217

BaltimoreKansas City

BWI - MCI

BWIMCI

Baltimore/Washington

Sat 10/25

6:00 am-10:08 am

1 stop5h 08m

Kansas City

Tue 10/28

5:59 pm-12:41 am

1 stop5h 42m

$217

BaltimoreKansas City

BWI - MCI

BWIMCI

Baltimore/Washington

Fri 10/31

5:39 pm-9:03 pm

1 stop4h 24m

Kansas City

Sun 11/2

12:36 pm-7:44 pm

1 stop6h 08m

$217

Washington, D.C.Kansas City

DCA - MCI

DCAMCI

Washington, D.C. Reagan-National

Tue 11/11

6:06 am-9:52 am

1 stop4h 46m

Kansas City

Wed 11/12

3:12 pm-8:41 pm

1 stop4h 29m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 60 results
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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

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Missouri (average of $311). Flying from Washington, D.C. to Missouri in March is currently the most expensive (average of $356). 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 September 15, 2025.

When flying from Washington, D.C. to Missouri, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 15, 2025.

The most flights from WAS to USMO are scheduled on a Monday (17 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 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 September 15, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United 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
8.0
Very good
4,242 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,929 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 33m. Airlines will cover a distance of 717 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 United Airlines ($67), Frontier ($73), and Southwest ($83).

  • 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 - Kansas City, Baltimore/Washington - Kansas City and Washington, D.C. Dulles Intl - 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 United Airlines (82%), GoJet (73%) or Avianca (73%) 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 $115. While the most popular route (Washington, D.C. Dulles Intl - Kansas City) can be booked for $181 on average, our data indicates $452 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, August is the cheapest month in which you can book a flight from Washington, D.C. to Missouri (average of $311). Flying from Washington, D.C. to Missouri in March is currently the most expensive (average of $356). 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

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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
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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$230FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$123Average$258FlexibilityNo cancel feeOn-time65%
DeltaCheapest$155Average$329FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$167Average$407FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$188Average$364FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$198Average$441FlexibilityNo cancel feeOn-time69%

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