Missouri

$59+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — STL
Feb 28 — Mar 71
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Cheap 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 January 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:58 pm
BWI
-
STL
1 stop13h 53m
Multiple Airlines
Tue 3/33:49 pm
STL
-
BWI
1 stop18h 28m
Multiple Airlines
Deal found 1/27$134
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:30 am
BWI
-
STL
1 stop11h 57m
Multiple Airlines
Wed 3/1811:32 am
STL
-
BWI
1 stop12h 09m
Multiple Airlines
Deal found 1/27$135
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/165:31 am
BWI
-
STL
1 stop9h 03m
Frontier
Wed 3/1811:32 am
STL
-
BWI
1 stop12h 09m
Frontier
Deal found 1/27$136
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/173:19 pm
BWI
-
STL
1 stop20h 18m
Frontier
Mon 3/2312:16 pm
STL
-
BWI
1 stop25h 08m
Frontier
Deal found 1/28$144
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/226:00 am
BWI
-
STL
1 stop25h 51m
Frontier
Wed 2/258:17 pm
STL
-
BWI
1 stop19h 56m
Frontier
Deal found 1/27$145
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/226:00 am
BWI
-
STL
1 stop25h 51m
Frontier
Mon 2/238:22 pm
STL
-
BWI
1 stop19h 51m
Frontier
Deal found 1/28$146
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/276:08 pm
BWI
-
STL
1 stop13h 43m
Multiple Airlines
Sat 2/2812:36 pm
STL
-
BWI
1 stop9h 17m
Multiple Airlines
Deal found 1/27$148
This CheapOair deal was found by Cheapflights users on 1/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/239:26 am
BWI
-
STL
1 stop15h 33m
Frontier
Tue 2/243:49 pm
STL
-
BWI
1 stop26h 41m
Frontier
Deal found 1/27$149
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/65:31 am
BWI
-
MCI
1 stop11h 52m
Frontier
Mon 3/95:08 pm
MCI
-
BWI
1 stop20h 16m
Frontier
Deal found 1/28$158
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/74:44 pm
BWI
-
STL
1 stop7h 49m
Multiple Airlines
Mon 2/98:22 pm
STL
-
BWI
1 stop27h 09m
Multiple Airlines
Deal found 1/27$158
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/205:31 am
BWI
-
STL
1 stop9h 03m
Frontier
Mon 3/2312:16 pm
STL
-
BWI
1 stop25h 08m
Frontier
Deal found 1/28$161
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/232:58 pm
BWI
-
MCI
1 stop25h 31m
Multiple Airlines
Mon 3/210:55 am
MCI
-
BWI
1 stop12h 36m
Multiple Airlines
Deal found 1/26$163

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$134
(Kiwi.com)

One-way from

$59
(WAYA)

Popular in

January

Cheapest in

August

Average price

$467

Good round-trip deal

$303 or less

Good one-way deal

$113 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Lambert-St Louis flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lambert-St Louis flights.
From Washington, D.C. (WAS) to Missouri
One-way flight from Washington, D.C. (WAS) to Missouri
Highest demand for flights based on searches. 16% potential increase in price ($66 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Average for round-trip flights in January 2026
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Missouri.
Price to beat on a one-way flight from Washington, D.C. (WAS) to Missouri.

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 January 29, 2026.
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

Mon 2/9

6:00 am-11:50 am

1 stop6h 50m

Kansas City

Mon 2/23

11:26 am-11:31 pm

1 stop11h 05m

$187

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Fri 2/13

8:39 pm-6:51 am

1 stop11h 12m

Lambert-St Louis

Mon 2/16

8:22 pm-12:31 am

1 stop27h 09m

$213

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Tue 4/14

5:35 pm-11:19 pm

1 stop6h 44m

Lambert-St Louis

Fri 4/17

8:13 pm-8:12 am

1 stop10h 59m

$215

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Wed 4/1

10:12 am-11:25 pm

2 stops14h 13m

Lambert-St Louis

Mon 4/6

4:54 pm-6:27 pm

1 stop24h 33m

$240

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Sun 2/8

11:24 am-6:51 am

1 stop20h 27m

Lambert-St Louis

Wed 2/11

8:17 pm-5:13 pm

1 stop19h 56m

$253

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Tue 2/24

6:45 pm-8:23 pm

Nonstop2h 38m

Lambert-St Louis

Wed 2/25

7:41 am-4:05 pm

1 stop7h 24m

$255

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sun 3/15

6:00 pm-9:49 am

1 stop16h 49m

Lambert-St Louis

Wed 3/18

8:12 pm-1:02 pm

1 stop15h 50m

$255

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 5/5

8:00 am-9:20 am

Nonstop2h 20m

Lambert-St Louis

Tue 5/12

8:00 am-11:00 am

Nonstop2h 00m

$257

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 2/24

6:40 pm-9:55 pm

1 stop4h 15m

Lambert-St Louis

Tue 3/3

6:20 am-3:25 pm

2 stops8h 05m

$258

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 2/12

5:58 pm-6:51 am

1 stop13h 53m

Lambert-St Louis

Wed 2/18

8:17 pm-12:31 am

1 stop27h 14m

$258

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

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, September is the cheapest month in which you can book a flight from Washington, D.C. to Missouri (average of $109). Flying from Washington, D.C. to Missouri in February is currently the most expensive (average of $194). 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 January 29, 2026.

It’s typically best to fly out from Washington, D.C. to Missouri in the evening. Doing so could potentially save you 10% on the flight price compared to flying in the afternoon, 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 January 24, 2026.

Travelers seeking maximum savings on their Washington, D.C. to Missouri flight should consider departing on Friday evenings 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.

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 January 29, 2026.

The most flights from WAS to USMO are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 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 January 29, 2026.
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.

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 20m. 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 Frontier ($50), American Airlines ($98), and Southwest ($98).

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

  • 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 (76%), United Airlines (76%) or Avianca (64%) 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 $113. While the most popular route (Washington, D.C. Dulles Intl - Lambert-St Louis) can be booked for $174 on average, our data indicates $516 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, September is the cheapest month in which you can book a flight from Washington, D.C. to Missouri (average of $109). Flying from Washington, D.C. to Missouri in February is currently the most expensive (average of $194). 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

Browse thousands of different options on Cheapflights for your next trip

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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.

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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$200FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$111Average$231FlexibilityNo cancel feeOn-time65%
DeltaCheapest$124Average$341FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$167Average$381FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$186Average$372FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$233Average$427FlexibilityNo cancel feeOn-time69%

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