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$129+ Cheap flights from Reagan-National (DCA) 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — MCI
Aug 11 — Aug 181
Tue 8/11
Tue 8/18
1 adult, Economy
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Cheap flight deals from Reagan-National to Missouri

Cheapest flights from Reagan-National to Missouri
Explore the most affordable flight options available from Reagan-National to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 12, 2026.

This American Airlines deal was found by Cheapflights users on 7/9. 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.
Sat 8/85:00 am
DCA
-
STL
1 stop5h 32m
American Airlines
Wed 8/126:00 am
STL
-
DCA
Nonstop2h 14m
American Airlines
Deal found 7/9$267
This Southwest deal was found by Cheapflights users on 7/9. 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.
Sat 8/86:40 pm
DCA
-
STL
Nonstop2h 10m
Southwest
Sat 8/152:30 pm
STL
-
DCA
1 stop4h 25m
Southwest
Deal found 7/9$268
This United Airlines deal was found by Cheapflights users on 7/9. 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.
Sat 8/88:25 am
DCA
-
STL
1 stop4h 46m
United Airlines
Wed 8/125:30 pm
STL
-
DCA
1 stop4h 22m
United Airlines
Deal found 7/9$269
This Trip.com deal was found by Cheapflights users on 7/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/157:00 am
DCA
-
STL
1 stop13h 23m
Frontier
Sun 8/168:08 pm
STL
-
DCA
1 stop15h 43m
Frontier
Deal found 7/10$270
This CheapOair deal was found by Cheapflights users on 7/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:00 pm
DCA
-
STL
1 stop26h 15m
Frontier
Mon 10/128:10 pm
STL
-
DCA
1 stop15h 40m
Frontier
Deal found 7/11$271
This CheapOair deal was found by Cheapflights users on 7/8. 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 8/16:00 pm
DCA
-
STL
1 stop26h 23m
Frontier
Tue 8/118:08 pm
STL
-
DCA
1 stop15h 43m
Frontier
Deal found 7/8$272
This Southwest deal was found by Cheapflights users on 7/9. 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.
Sat 10/106:55 am
DCA
-
STL
2 stops10h 10m
Southwest
Mon 10/127:50 pm
STL
-
DCA
Nonstop2h 00m
Southwest
Deal found 7/9$274
This Delta deal was found by Cheapflights users on 7/11. 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.
Sat 8/156:59 am
DCA
-
STL
1 stop10h 18m
Delta
Thu 8/209:25 am
STL
-
DCA
1 stop5h 54m
Delta
Deal found 7/11$276
This American Airlines deal was found by Cheapflights users on 7/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:04 am
DCA
-
STL
1 stop5h 51m
American Airlines
Sat 8/297:00 am
STL
-
DCA
Nonstop2h 13m
American Airlines
Deal found 7/10$277
This American Airlines deal was found by Cheapflights users on 7/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:59 pm
DCA
-
STL
Nonstop2h 29m
American Airlines
Mon 8/176:00 am
STL
-
DCA
Nonstop2h 14m
American Airlines
Deal found 7/10$278
This American Airlines deal was found by Cheapflights users on 7/7. 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.
Fri 9/186:09 am
DCA
-
STL
1 stop4h 20m
American Airlines
Mon 9/216:00 am
STL
-
DCA
Nonstop2h 19m
American Airlines
Deal found 7/7$279
This Trip.com deal was found by Cheapflights users on 7/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:00 am
DCA
-
STL
1 stop13h 13m
Frontier
Sun 9/67:58 pm
STL
-
DCA
1 stop15h 53m
Frontier
Deal found 7/11$280

Find flight deals from Reagan-National to Missouri

Keep the following information in mind while searching for Reagan-National to Missouri flight deals. Data was last updated July 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$263
(Southwest)

One-way from

$129
(Delta)

Popular in

March

Cheapest in

October

Average price

$377

Good round-trip deal

$299 or less

Good one-way deal

$185 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lambert-St Louis flights.
Search Deals
From Washington, D.C. Reagan-National to Missouri
Search Deals
One-way flight from Washington, D.C. Reagan-National to Missouri
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Reagan-National to Missouri.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Reagan-National to Missouri.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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 July 12, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Missouri that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sat 10/10

6:55 am-4:05 pm

2 stops10h 10m

Lambert-St Louis

Tue 10/13

10:20 am-2:30 pm

1 stop3h 10m

$279

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sat 10/10

6:55 am-4:05 pm

2 stops10h 10m

Lambert-St Louis

Mon 10/12

4:20 pm-10:55 pm

1 stop5h 35m

$283

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Fri 9/4

6:55 am-10:10 am

1 stop4h 15m

Lambert-St Louis

Mon 9/7

2:20 pm-9:55 pm

1 stop6h 35m

$289
Quickest round-trip

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sat 8/22

6:40 pm-7:50 pm

Nonstop2h 10m

Lambert-St Louis

Sun 8/23

8:00 am-11:00 am

Nonstop2h 00m

$291

Washington, D.C.Columbia

DCA - COU

DCACOU

Washington, D.C. Reagan-National

Fri 8/28

6:30 am-10:16 am

1 stop4h 46m

Columbia Regional

Sun 8/30

6:15 am-12:08 pm

1 stop4h 53m

$298

Washington, D.C.Columbia

DCA - COU

DCACOU

Washington, D.C. Reagan-National

Sun 8/2

3:57 pm-9:01 pm

1 stop6h 04m

Columbia Regional

Sat 8/8

12:58 pm-9:00 pm

1 stop7h 02m

$298

Washington, D.C.Columbia

DCA - COU

DCACOU

Washington, D.C. Reagan-National

Tue 8/4

5:50 pm-9:52 pm

1 stop5h 02m

Columbia Regional

Sat 8/8

12:58 pm-9:00 pm

1 stop7h 02m

$298

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 8/13

3:30 pm-4:45 pm

Nonstop2h 15m

Lambert-St Louis

Sun 8/16

10:05 am-2:55 pm

1 stop3h 50m

$301

Washington, D.C.Kansas City

DCA - MCI

DCAMCI

Washington, D.C. Reagan-National

Thu 8/20

6:00 am-7:40 am

Nonstop2h 40m

Kansas City

Sun 8/23

7:30 pm-10:55 pm

Nonstop2h 25m

$308

Washington, D.C.Springfield

DCA - SGF

DCASGF

Washington, D.C. Reagan-National

Sat 8/22

10:10 am-3:10 pm

1 stop6h 00m

Springfield-Branson

Sat 8/29

6:06 am-11:28 am

1 stop4h 22m

$309

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/11

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Reagan-National to Missouri

Have a flexible travel schedule? Discover the best time to fly to Missouri from Reagan-National 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. Reagan-National Airport to Missouri

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

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Missouri (average of $117). Flying from Washington, D.C. Reagan-National Airport to Missouri in March is currently the most expensive (average of $236). 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 DCA to MO?

Find hourly flight availability from Reagan-National 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 July 12, 2026.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Reagan-National Airport to Missouri at noon. If you’re flexible enough to do this you can expect to save up to 4% on your trip compared to booking a flight in the evening.

How much does it cost to fly round-trip from Washington, D.C. Reagan-National Airport to Missouri?

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to Missouri?

Booking 78 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Reagan-National Airport to Missouri. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest day to fly from Washington, D.C. Reagan-National Airport to Missouri?

Use this chart to determine the cheapest time to fly round-trip from Reagan-National to Missouri. Price data was last updated on July 4, 2026.

Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to Missouri flight should consider departing on Wednesday at noon when fares are most often at their lowest. Sunday at noon 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 July 12, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Reagan-National Airport to Missouri, such as Southwest,Delta, andUnited Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,251 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.
Southwest
7.9
Good
4,251 reviews
Southwest
7.9
Good
4,251 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.
Delta
7.8
Good
8,458 reviews
Southwest
7.9
Good
4,251 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.
United Airlines
7.4
Good
9,980 reviews
Southwest
7.9
Good
4,251 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.
American Airlines
7.1
Good
11,804 reviews
Southwest
7.9
Good
4,251 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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. Reagan-National Airport to Missouri?

    Southwest, United Airlines, and American Airlines can get you from Washington, D.C. Reagan-National Airport to Missouri in just under 4h 46m. Your travel time can differ by up to 5h 24m. Airlines will cover a distance of 816 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. Reagan-National Airport to Missouri one-way?

    The cheapest airlines for a one-way flight from Washington, D.C. Reagan-National Airport to Missouri are Frontier ($64), American Airlines ($98), and Southwest ($113).

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

    The most popular route from Washington, D.C. Reagan-National Airport to Missouri is Washington, D.C. Reagan-National - Kansas City. You may also consider Washington, D.C. Reagan-National - Lambert-St Louis or Washington, D.C. Reagan-National - Springfield-Branson.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Reagan-National Airport to Missouri on time: Envoy Air (71%), PSA Airlines (68%), American Airlines (66%).

  • What are the cheapest flights from Washington, D.C. Reagan-National Airport to Missouri?

    Looking at all options, your cheapest flight can be booked for $129. While the most popular route (Washington, D.C. Reagan-National - Kansas City) can be booked for $227 on average, our data indicates $464 when flying from Washington, D.C. Reagan-National Airport to Missouri.

  • Can I find deals for flights from Reagan-National to Missouri that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Missouri flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Missouri?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Missouri.

  • Can I find deals for business class flights from Reagan-National to Missouri?

    Yes. Cheapflights offers flight deals from Reagan-National 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. Reagan-National Airport to Missouri?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Missouri (average of $117). Flying from Washington, D.C. Reagan-National Airport to Missouri in March is currently the most expensive (average of $236). 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.

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Alternative routes for Reagan-National to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Reagan-National to Missouri

Discover the top 4 airlines that operate flights from Reagan-National 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 July 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$179Average$381FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$201Average$387FlexibilityNo cancel feeOn-time63%
DeltaCheapest$278Average$368FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$318Average$509FlexibilityNo cancel feeOn-time69%

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