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Reagan-National

$96+ Cheap flights from Missouri to Reagan-National (DCA)

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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DCA
May 29 — Jun 51
Fri 5/29
Fri 6/5
1 adult, Economy
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Cheap flight deals from Missouri to Reagan-National

Cheapest flights from Missouri to Reagan-National
Explore the most affordable flight options available from Missouri to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2026.

This Southwest deal was found by Cheapflights users on 4/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/191:45 pm
STL
-
DCA
1 stop4h 25m
Southwest
Tue 6/911:45 am
DCA
-
STL
1 stop4h 05m
Southwest
Deal found 4/28$252
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:45 am
STL
-
DCA
1 stop5h 29m
United Airlines
Wed 6/311:57 am
DCA
-
STL
1 stop4h 49m
United Airlines
Deal found 4/28$257
This American Airlines deal was found by Cheapflights users on 4/25. 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.
Wed 6/246:00 am
STL
-
DCA
1 stop5h 19m
American Airlines
Sat 6/275:45 pm
DCA
-
STL
Nonstop2h 34m
American Airlines
Deal found 4/25$260
This American Airlines deal was found by Cheapflights users on 4/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:23 am
STL
-
DCA
1 stop4h 34m
American Airlines
Mon 6/18:00 pm
DCA
-
STL
Nonstop2h 29m
American Airlines
Deal found 4/28$261
This Southwest deal was found by Cheapflights users on 4/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:20 pm
STL
-
DCA
Nonstop2h 00m
Southwest
Mon 5/258:00 am
DCA
-
STL
Nonstop2h 20m
Southwest
Deal found 4/28$265
This Southwest deal was found by Cheapflights users on 4/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/212:40 pm
STL
-
DCA
2 stops7h 05m
Southwest
Mon 6/82:35 pm
DCA
-
STL
Nonstop2h 15m
Southwest
Deal found 4/26$266
This Expedia deal was found by Cheapflights users on 4/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/118:08 pm
STL
-
DCA
1 stop24h 51m
Frontier
Sun 6/147:00 am
DCA
-
STL
1 stop13h 23m
Frontier
Deal found 4/25$270
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:04 pm
STL
-
DCA
1 stop3h 55m
Delta
Mon 6/15:28 pm
DCA
-
STL
1 stop4h 41m
Delta
Deal found 4/29$271
This Southwest deal was found by Cheapflights users on 4/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:55 pm
STL
-
DCA
Nonstop2h 05m
Southwest
Sat 5/3012:00 pm
DCA
-
STL
Nonstop2h 25m
Southwest
Deal found 4/27$273
This Southwest deal was found by Cheapflights users on 4/25. 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.
Thu 6/48:10 am
STL
-
DCA
1 stop6h 40m
Southwest
Mon 6/88:00 am
DCA
-
STL
Nonstop2h 10m
Southwest
Deal found 4/25$275
This Southwest deal was found by Cheapflights users on 4/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:55 pm
STL
-
DCA
Nonstop2h 05m
Southwest
Fri 5/298:00 am
DCA
-
STL
Nonstop2h 20m
Southwest
Deal found 4/28$276
This Trip.com deal was found by Cheapflights users on 4/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:17 pm
STL
-
DCA
1 stop19h 42m
Frontier
Mon 5/117:00 am
DCA
-
STL
1 stop13h 23m
Frontier
Deal found 4/26$279

Find flight deals from Missouri to Reagan-National

Keep the following information in mind while searching for Missouri to Reagan-National flight deals. Data was last updated April 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$252
(Southwest)

One-way from

$96
(Expedia)

Popular in

February

Cheapest in

August

Average price

$346

Good round-trip deal

$328 or less

Good one-way deal

$198 or less
Provider with most accurate pricing for Lambert-St Louis-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Washington, D.C. (WAS) flights.
Search Deals
From Missouri to Washington, D.C. Reagan-National
Search Deals
One-way flight from Missouri to Washington, D.C. Reagan-National
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($46 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 April 2026
Search Deals
Price to beat on a round-trip flight from Missouri to Washington, D.C. Reagan-National.
Search Deals
Price to beat on a one-way flight from Missouri to Washington, D.C. Reagan-National.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Reagan-National 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 April 29, 2026.
Use the filters below to find and compare flights from Missouri to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Sat 5/23

5:29 pm-10:54 pm

1 stop4h 25m

Washington, D.C. Reagan-National

Wed 5/27

11:57 am-3:46 pm

1 stop4h 49m

$271

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Thu 5/21

8:30 am-3:55 pm

1 stop6h 25m

Washington, D.C. Reagan-National

Mon 5/25

8:00 am-9:20 am

Nonstop2h 20m

$275
Quickest round-trip

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Tue 6/30

8:30 am-11:25 am

Nonstop1h 55m

Washington, D.C. Reagan-National

Tue 7/14

6:40 pm-8:00 pm

Nonstop2h 20m

$276

Kansas CityWashington, D.C.

MCI - DCA

MCIDCA

Kansas City

Wed 5/20

5:47 pm-10:59 pm

1 stop4h 12m

Washington, D.C. Reagan-National

Mon 5/25

6:59 am-11:16 am

1 stop5h 17m

$294

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Sat 6/20

6:30 am-11:34 am

1 stop4h 04m

Washington, D.C. Reagan-National

Wed 6/24

6:00 am-9:46 am

1 stop4h 46m

$296

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Wed 6/24

5:15 am-12:00 pm

1 stop5h 45m

Washington, D.C. Reagan-National

Fri 6/26

8:00 am-9:10 am

Nonstop2h 10m

$297

Kansas CityWashington, D.C.

MCI - DCA

MCIDCA

Kansas City

Wed 5/20

5:25 am-11:05 am

1 stop4h 40m

Washington, D.C. Reagan-National

Sat 5/23

7:15 am-9:00 am

Nonstop2h 45m

$297

ColumbiaWashington, D.C.

COU - DCA

COUDCA

Columbia Regional

Fri 7/24

11:23 am-7:10 pm

1 stop6h 47m

Washington, D.C. Reagan-National

Wed 7/29

3:30 pm-9:59 pm

1 stop7h 29m

$298

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Tue 6/16

6:00 am-11:07 am

1 stop4h 07m

Washington, D.C. Reagan-National

Fri 6/19

6:25 pm-11:56 pm

1 stop6h 31m

$307

SpringfieldWashington, D.C.

SGF - DCA

SGFDCA

Springfield-Branson

Fri 6/5

12:07 pm-6:28 pm

1 stop5h 21m

Washington, D.C. Reagan-National

Sat 6/13

4:00 pm-9:13 pm

1 stop6h 13m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

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

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

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

Booking 49 days in advance of your planned departure date is, on average, the best time to get cheap flights from Missouri to Washington, D.C. Reagan-National Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, March is the cheapest month in which you can book a flight from Missouri to Washington, D.C. Reagan-National Airport (average of $96). Flying from Missouri to Washington, D.C. Reagan-National Airport in February is currently the most expensive (average of $175). 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 DCA?

Find hourly flight availability from Missouri to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2026.

A simple way to save on the total cost of your ticket is to fly from Missouri to Washington, D.C. Reagan-National Airport in the evening. If you’re flexible enough to do this you can expect to save up to 19% on your trip compared to booking a flight at noon.

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

Related info for your journey

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

    Airlines like United Airlines, Southwest, and Delta fly from Missouri to Washington, D.C. Reagan-National Airport in about 4h 12m. The time it takes to get you to your destination can typically vary by up to 2h 13m. There are 947 mi between Missouri and Washington, D.C. Reagan-National Airport. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Missouri to Washington, D.C. Reagan-National Airport one-way?

    $67 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Southwest and Frontier, with prices starting from $89 and $111, respectively.

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

    When deciding which route to take from Missouri to Washington, D.C. Reagan-National Airport consider Kansas City - Washington, D.C. Reagan-National, Lambert-St Louis - Washington, D.C. Reagan-National or Springfield-Branson - Washington, D.C. Reagan-National as they are the most popular.

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

    No one likes to see their flight delayed. When booking a flight from Missouri to Washington, D.C. Reagan-National Airport consider choosing PSA Airlines (83%), American Airlines (81%) or Republic Airways (77%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from Missouri to Washington, D.C. Reagan-National Airport is generally $327, our data shows the cheapest flight currently is $121. When looking at the most popular route, (Kansas City - Washington, D.C. Reagan-National), you can expect to pay $271 for that flight.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Missouri to Washington, D.C. Reagan-National Airport (average of $96). Flying from Missouri to Washington, D.C. Reagan-National Airport in February is currently the most expensive (average of $175). 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 Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Alexandria
Tysons
Owings Mills
Springfield
Arlington
Silver Spring
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Woodbridge
Hanover
Laurel
Largo
Upper Marlboro
Waldorf
Clinton
Hunt Valley
Cordova

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Missouri to Reagan-National

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Dulles Intl flights
Los Angeles to Dulles Intl flights
Los Angeles to Reagan-National flights
Dallas/Fort Worth to Baltimore flights
Los Angeles to Baltimore flights
Boston to Baltimore flights
San Francisco to Dulles Intl flights
O'Hare Intl to Dulles Intl flights
Seattle to Reagan-National flights
Atlanta to Baltimore flights
Seattle to Dulles Intl flights
San Francisco to Reagan-National flights
Boston to Reagan-National flights
Atlanta to Dulles Intl flights
O'Hare Intl to Baltimore flights
Hobby to Baltimore flights
Boston to Dulles Intl flights
Denver to Dulles Intl flights
Hobby to Dulles Intl flights
San Francisco to Baltimore flights
O'Hare Intl to Reagan-National flights
Dallas/Fort Worth to Reagan-National flights
Hobby to Reagan-National flights
Denver to Baltimore flights
Orlando to Baltimore flights
Orlando to Dulles Intl flights
Detroit to Baltimore flights
Tampa to Dulles Intl flights
Atlanta to Reagan-National flights
Sky Harbor Intl to Dulles Intl flights
Orlando to Reagan-National flights
Seattle to Baltimore flights
Fort Lauderdale to Baltimore flights
Tampa to Baltimore flights
George Bush Intcntl to Dulles Intl flights
Detroit to Dulles Intl flights
Miami to Reagan-National flights
George Bush Intcntl to Baltimore flights
George Bush Intcntl to Reagan-National flights
Ontario to Dulles Intl flights
San Diego to Dulles Intl flights
Fort Lauderdale to Dulles Intl flights
Miami to Dulles Intl flights
Austin to Dulles Intl flights
Midway to Dulles Intl flights
Minneapolis to Dulles Intl flights
Sky Harbor Intl to Baltimore flights
Minneapolis to Reagan-National flights
Midway to Baltimore flights
Sky Harbor Intl to Reagan-National flights

Top 5 airlines flying from Missouri to Reagan-National

Discover the top 5 airlines that operate flights from Missouri to Reagan-National. 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 April 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$96Average$234FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$149Average$412FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$197Average$350FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$248Average$382FlexibilityNo cancel feeOn-time69%
DeltaCheapest$248Average$393FlexibilityNo cancel feeOn-timeN/A

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