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$55+ 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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — STL
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$110
(Frontier)

One-way from

$55
(Priceline)

Popular in

October

Cheapest in

August

Average price

$407

Good round-trip deal

$298 or less

Good one-way deal

$146 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lambert-St Louis flights.
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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. 4% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 30, 2025.

This Frontier deal was found by Cheapflights users on 10/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/125:45 amBWI - MCI
1 stop6h 33mFrontier
Mon 12/1512:46 pmMCI - BWI
1 stop10h 48mFrontier
Deal found 10/30$124
This Frontier deal was found by Cheapflights users on 10/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/55:45 amBWI - STL
1 stop5h 02mFrontier
Thu 12/1112:04 pmSTL - BWI
1 stop11h 20mFrontier
Deal found 10/30$144
This CheapOair deal was found by Cheapflights users on 10/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/810:16 amBWI - STL
1 stop6h 22mFrontier
Thu 11/132:12 pmSTL - BWI
1 stop17h 22mFrontier
Deal found 10/30$150
This Priceline deal was found by Cheapflights users on 10/30. 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.
Fri 11/145:50 amBWI - MCI
1 stop5h 27mMultiple Airlines
Wed 11/196:00 amMCI - BWI
1 stop10h 19mMultiple Airlines
Deal found 10/30$157
This Frontier deal was found by Cheapflights users on 10/28. 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 12/79:43 pmBWI - STL
1 stop12h 16mFrontier
Thu 12/1112:04 pmSTL - BWI
1 stop11h 20mFrontier
Deal found 10/28$163
This Flightnetwork deal was found by Cheapflights users on 10/29. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/68:37 amBWI - STL
1 stop14h 56mFrontier
Mon 12/89:54 amSTL - BWI
1 stop9h 22mFrontier
Deal found 10/29$170
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/134:15 pmBWI - STL
1 stop24h 46mFrontier
Mon 11/177:45 pmSTL - BWI
2 stops21h 44mFrontier
Deal found 10/29$176
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Sat 11/154:30 pmBWI - MCI
1 stop18h 47mFrontier
Mon 11/1711:12 amMCI - BWI
1 stop12h 01mFrontier
Deal found 10/29$179
This Priceline deal was found by Cheapflights users on 10/30. 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.
Fri 11/145:50 amBWI - MCI
1 stop5h 27mMultiple Airlines
Tue 11/186:00 amMCI - BWI
1 stop10h 19mMultiple Airlines
Deal found 10/30$182
This Gotogate deal was found by Cheapflights users on 10/29. 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.
Thu 12/1110:40 amBWI - MCI
1 stop13h 35mMultiple Airlines
Mon 12/1512:46 pmMCI - BWI
1 stop10h 48mMultiple Airlines
Deal found 10/29$183
This CheapOair deal was found by Cheapflights users on 10/29. 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.
Wed 12/311:16 amBWI - STL
1 stop12h 17mFrontier
Sun 12/73:30 pmSTL - BWI
1 stop15h 12mFrontier
Deal found 10/29$183
This Cheapflightsfares deal was found by Cheapflights users on 10/29. 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.
Fri 11/285:40 amBWI - MCI
1 stop13h 56mSpirit Airlines
Fri 12/53:47 pmMCI - BWI
1 stop7h 36mSpirit Airlines
Deal found 10/29$186

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 October 30, 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

BaltimoreKansas City

BWI - MCI

BWIMCI

Baltimore/Washington

Thu 1/8

6:42 pm-10:11 am

1 stop16h 29m

Kansas City

Mon 1/12

11:06 am-12:24 am

1 stop12h 18m

$181

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 11/20

8:45 pm-11:57 pm

1 stop28h 12m

Lambert-St Louis

Mon 11/24

4:13 pm-8:50 pm

1 stop27h 37m

$190

Washington, D.C.Kansas City

IAD - MCI

IADMCI

Washington, D.C. Dulles Intl

Thu 12/18

7:11 pm-10:08 am

1 stop15h 57m

Kansas City

Fri 1/9

1:44 pm-8:48 am

1 stop18h 04m

$209

BaltimoreKansas City

BWI - MCI

BWIMCI

Baltimore/Washington

Mon 11/24

5:40 am-6:36 pm

1 stop13h 56m

Kansas City

Mon 12/1

7:31 pm-10:08 am

1 stop13h 37m

$212

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 11/20

4:25 pm-11:57 pm

1 stop8h 32m

Lambert-St Louis

Sun 11/23

4:13 pm-8:23 am

1 stop15h 10m

$218

BaltimoreKansas City

BWI - MCI

BWIMCI

Baltimore/Washington

Wed 12/17

7:06 pm-5:10 pm

1 stop23h 04m

Kansas City

Fri 1/9

8:46 pm-10:09 am

2 stops12h 23m

$223

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Thu 11/20

6:55 am-2:29 pm

1 stop8h 34m

Lambert-St Louis

Sun 11/23

3:14 pm-11:59 pm

1 stop7h 45m

$230

BaltimoreKansas City

BWI - MCI

BWIMCI

Baltimore/Washington

Thu 12/18

6:30 am-5:10 pm

1 stop11h 40m

Kansas City

Thu 1/8

1:44 pm-8:32 pm

1 stop5h 48m

$231

BaltimoreKansas City

BWI - MCI

BWIMCI

Baltimore/Washington

Wed 12/17

7:06 pm-5:10 pm

1 stop23h 04m

Kansas City

Sat 1/10

1:44 pm-11:11 pm

2 stops8h 27m

$231

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Fri 12/5

3:50 pm-9:35 pm

1 stop6h 45m

Lambert-St Louis

Sat 12/6

6:25 am-1:55 pm

2 stops6h 30m

$234

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

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, November is the cheapest month in which you can book a flight from Washington, D.C. to Missouri (average of $94). Flying from Washington, D.C. to Missouri in January is currently the most expensive (average of $199). 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 October 30, 2025.

It’s typically best to fly out from Washington, D.C. to Missouri in the evening. Doing so could potentially save you 46% on the flight price compared to flying in the morning, 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 December 16, 2024.

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

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 October 30, 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
4,243 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

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
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

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
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

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
8,998 reviews
Southwest
8.0
Very good
4,243 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

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
11,035 reviews
Southwest
8.0
Very good
4,243 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

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
3,122 reviews
Southwest
8.0
Very good
4,243 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

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 6h 45m. Airlines will cover a distance of 736 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 ($81), Spirit Airlines ($85), and American Airlines ($109).

  • 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, Washington, D.C. Dulles Intl - Lambert-St Louis and Washington, D.C. Reagan-National - Kansas City.

  • 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 GoJet (84%), Avianca (84%) or United Airlines (84%) 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 $134. While the most popular route (Washington, D.C. Dulles Intl - Kansas City) can be booked for $183 on average, our data indicates $350 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, November is the cheapest month in which you can book a flight from Washington, D.C. to Missouri (average of $94). Flying from Washington, D.C. to Missouri in January is currently the most expensive (average of $199). 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.
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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$90Average$212FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$111Average$250FlexibilityNo cancel feeOn-time65%
DeltaCheapest$130Average$330FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$174Average$380FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$188Average$369FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$223Average$426FlexibilityNo cancel feeOn-time69%

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