What airlines fly to Washington, D.C.?

Southwest, American Airlines and United Airlines are the top three most popular airlines that fly to Washington, D.C. from Missouri according to our data. Southwest is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 6 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

How many flights depart from Missouri to Washington, D.C. on average per week?

199 flights are operational weekly from Missouri to Washington, D.C. as of May 2026. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.

How long does it take to fly to Washington, D.C.?

Flight times from Missouri to Washington, D.C. vary, but if you’re flying out of St. Louis and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 2h 06m on average. Another popular route from Missouri to Washington, D.C. is flying from Kansas City to Washington, D.C. Dulles Intl Airport, which will take roughly 2h 22m. Keep in mind that layovers or delays could extend your travel time.

How many flights depart from Missouri to Washington, D.C. on average per day?

As of May 2026, there are 28 flights per day flying from Missouri to Washington, D.C.. The most common time of day flights depart is 12:00PM, with 63% of flights taking off in the afternoon.

What is the cheapest airline that flies from Missouri to Washington, D.C.?

Frontier, Southwest, and United Airlines are the most popular carriers operating from Missouri to Washington, D.C.

When did momondo last update prices for flights from Missouri to Washington, D.C.?

Prices for flights from Missouri to Washington, D.C. refresh daily.

How many operators does momondo search for flights from Missouri to Washington, D.C.?

As of May 2026, there are 6 operators available to choose from for flights from Missouri to Washington, D.C..

How old do you have to be to fly from Missouri to Washington, D.C.?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Washington, D.C..

What documentation or ID do you need to fly to Washington, D.C.?

The travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$63 Cheap Flights from Missouri to Washington, D.C. in 2026

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Find the cheapest flights from Missouri to Washington, D.C.

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:27 pm - 7:35 am

STL

BWI

13h 08m

1 stop

9:32 pm - 5:30 pm

BWI

STL

20h 58m

1 stop

$125Frontier

Mon, Jun 8 - Mon, Jun 15

5:27 pm - 7:43 am

STL

BWI

13h 16m

1 stop

9:13 pm - 8:55 am

BWI

STL

12h 42m

1 stop

$126Frontier

Mon, Jun 1 - Tue, Jun 2

5:27 pm - 6:01 pm

STL

IAD

47h 34m

2 stops

8:57 pm - 5:30 pm

IAD

STL

21h 33m

1 stop

$254Multiple Airlines

Sat, Jun 6 - Sat, Jun 13

8:30 am - 11:25 am

STL

DCA

1h 55mnonstop

8:00 am - 9:10 am

DCA

STL

2h 10mnonstop

$257Southwest

Tue, Jun 30 - Tue, Jul 7

1:24 pm - 4:29 pm

STL

DCA

2h 05mnonstop

7:45 pm - 9:12 pm

DCA

STL

2h 27mnonstop

$261American Airlines

Mon, Oct 5 - Tue, Oct 13

3:00 pm - 6:00 pm

STL

DCA

2h 00mnonstop

6:50 pm - 8:00 pm

DCA

STL

2h 10mnonstop

$265Southwest

Sat, Sep 5 - Mon, Sep 7

6:57 pm - 12:40 am

SGF

BWI

4h 43m

1 stop

5:40 am - 10:46 am

BWI

SGF

6h 06m

1 stop

$285Delta

Wed, Jun 24 - Wed, Jul 1

5:33 am - 9:19 am

MCI

DCA

2h 46mnonstop

7:30 am - 9:24 am

DCA

MCI

2h 54mnonstop

$289American Airlines

Wed, Jun 10 - Wed, Jun 17

6:16 pm - 10:22 am

MCI

IAD

15h 06m

1 stop

6:25 pm - 6:07 pm

IAD

MCI

24h 42m

2 stops

$298Multiple Airlines

Wed, Jul 1 - Wed, Jul 8

5:44 pm - 10:59 pm

MCI

DCA

4h 15m

1 stop

8:00 am - 2:29 pm

DCA

MCI

7h 29m

1 stop

$301Delta

Wed, Jul 1 - Wed, Jul 8

United Airlines flights from Missouri to Washington, D.C.

Our best United Airlines deals on Missouri to Washington, D.C. flight tickets

United Airlines

Jun 9

STL12:55 pmLambert-St Louis

2h 12m

IAD4:07 pmWashington, D.C. Dulles Intl

Jun 16

IAD10:31 amWashington, D.C. Dulles Intl

6h 15m

1 stop

STL3:46 pmLambert-St Louis

$267

United Airlines

Jun 9

STL12:55 pmLambert-St Louis

2h 12m

IAD4:07 pmWashington, D.C. Dulles Intl

Jun 16

IAD8:15 amWashington, D.C. Dulles Intl

4h 56m

1 stop

STL12:11 pmLambert-St Louis

$279

United Airlines

Jun 6

STL12:55 pmLambert-St Louis

2h 12m

IAD4:07 pmWashington, D.C. Dulles Intl

Jun 10

IAD10:31 amWashington, D.C. Dulles Intl

6h 15m

1 stop

STL3:46 pmLambert-St Louis

$284

Frontier flights from Missouri to Washington, D.C.

Our best Frontier deals on Missouri to Washington, D.C. flight tickets

Frontier

Jun 8

STL5:27 pmLambert-St Louis

13h 08m

1 stop

BWI7:35 amBaltimore/Washington

Jun 15

BWI9:32 pmBaltimore/Washington

20h 58m

1 stop

STL5:30 pmLambert-St Louis

$125

Frontier

Jun 1

STL5:27 pmLambert-St Louis

13h 16m

1 stop

BWI7:43 amBaltimore/Washington

Jun 2

BWI9:13 pmBaltimore/Washington

12h 42m

1 stop

STL8:55 amLambert-St Louis

$126

Frontier

Jun 1

STL5:27 pmLambert-St Louis

13h 16m

1 stop

BWI7:43 amBaltimore/Washington

Jun 7

BWI9:43 pmBaltimore/Washington

12h 12m

1 stop

STL8:55 amLambert-St Louis

$127

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 6/8

5:27 pm-7:35 am

1 stop13h 08m

Baltimore/Washington

Mon 6/15

9:32 pm-5:30 pm

1 stop20h 58m

$125

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 6/1

5:27 pm-7:43 am

1 stop13h 16m

Baltimore/Washington

Tue 6/2

9:13 pm-8:55 am

1 stop12h 42m

$126

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Sat 6/6

5:27 pm-6:01 pm

2 stops47h 34m

Washington, D.C. Dulles Intl

Sat 6/13

8:57 pm-5:30 pm

1 stop21h 33m

$254

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 7/7

8:00 am-9:10 am

Nonstop2h 10m

$257

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Mon 10/5

1:24 pm-4:29 pm

Nonstop2h 05m

Washington, D.C. Reagan-National

Tue 10/13

7:45 pm-9:12 pm

Nonstop2h 27m

$261

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Sat 9/5

3:00 pm-6:00 pm

Nonstop2h 00m

Washington, D.C. Reagan-National

Mon 9/7

6:50 pm-8:00 pm

Nonstop2h 10m

$265

SpringfieldBaltimore

SGF - BWI

SGFBWI

Springfield-Branson

Wed 6/24

6:57 pm-12:40 am

1 stop4h 43m

Baltimore/Washington

Wed 7/1

5:40 am-10:46 am

1 stop6h 06m

$285

Kansas CityWashington, D.C.

MCI - DCA

MCIDCA

Kansas City

Wed 6/10

5:33 am-9:19 am

Nonstop2h 46m

Washington, D.C. Reagan-National

Wed 6/17

7:30 am-9:24 am

Nonstop2h 54m

$289

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Wed 7/1

6:16 pm-10:22 am

1 stop15h 06m

Washington, D.C. Dulles Intl

Wed 7/8

6:25 pm-6:07 pm

2 stops24h 42m

$298

Kansas CityWashington, D.C.

MCI - DCA

MCIDCA

Kansas City

Wed 7/1

5:44 pm-10:59 pm

1 stop4h 15m

Washington, D.C. Reagan-National

Wed 7/8

8:00 am-2:29 pm

1 stop7h 29m

$301

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Missouri to Washington, D.C.

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Washington, D.C.?

The month of August is, on average, the cheapest month to fly to Washington, D.C. from Missouri, with most prices found around $67. If you’re not able to fly to Washington, D.C. in August, then November is your next best option. Flight prices from Missouri to Washington, D.C. during November average around $72.

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Missouri is on a Friday. momondo users have found tickets for Friday departures for as low as $374. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Missouri to Washington, D.C. for around $485.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the afternoon is the cheapest time of day to fly from Missouri to Washington, D.C. when you can find flight prices for as low as $336. Flying to Washington, D.C. in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $671. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Missouri to Washington, D.C. flight route?

Fly from Lambert-St Louis to Baltimore/Washington for the best Missouri - Washington, D.C. flight prices

How far in advance should I book a flight from Missouri to Washington, D.C.?

You are more likely to see cheaper flights to Washington, D.C. from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $352 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Missouri for as low as $236 on momondo.

Can stopping save me money on Missouri to Washington, D.C. flights?

You could potentially save up to 45% on your flight if you consider stops on a Missouri to Washington, D.C. flight.

Cheap Missouri to Washington, D.C. flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Washington, D.C.

Best Price Found	$178
Fastest flight time	1h 55m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

The best one-way flight to Washington, D.C. from Missouri in the past 72 hours is $178. The best round-trip flight deal from Missouri to Washington, D.C. found on momondo in the last 72 hours is $327.

The fastest flight from Missouri to Washington, D.C. takes 1h 55m

Direct flights go from Missouri to Washington, D.C. every day.

There are 2 airports in Washington, D.C.. From Missouri there are direct flights to Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD).

Search flight deals

Frequently asked questions about flying from Missouri to Washington, D.C.

When did momondo last update prices for flights from Missouri to Washington, D.C.?
Prices for flights from Missouri to Washington, D.C. refresh daily.
How many operators does momondo search for flights from Missouri to Washington, D.C.?
As of May 2026, there are 6 operators available to choose from for flights from Missouri to Washington, D.C..
How old do you have to be to fly from Missouri to Washington, D.C.?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Missouri to Washington, D.C.?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Missouri to Washington, D.C. is Boeing 737 MAX 8 (20.69% of total bookings). The next most popular plane models are Canadair (Bombardier) Regional Jet 900 (19.67%), Canadair (Bombardier) Regional Jet 700 (16.26%), and Embraer 175 (9.80%).

Best airlines flying from Missouri to Washington, D.C.

Compare and see reviews for airlines that fly from Missouri to Washington, D.C. with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $80	Free Cancellation	Rating 5.6 2,952 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $96	Free Cancellation	Rating 6.3 8,632 reviews	Search Spirit Airlines flights
Delta	PriceFrom $99	Free Cancellation	Rating 7.9 8,452 reviews	Search Delta flights
American Airlines	PriceFrom $156	Free Cancellation	Rating 7.1 11,663 reviews	Search American Airlines flights
United Airlines	PriceFrom $163	Free Cancellation	Rating 7.4 9,706 reviews	Search United Airlines flights
Southwest	PriceFrom $197	Free Cancellation	Rating 7.9 4,296 reviews	Search Southwest flights

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Gaithersburg

Colonial Beach

Fredericksburg

Silver Spring

Towson

Rockville

Manassas

Linthicum Heights

Tysons

Bethesda

Springfield

Fairfax

College Park

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to Washington, D.C.?

It is quick and easy to find Missouri to Washington, D.C. flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington, D.C. that suits you.

Can I find flights from Missouri to Washington, D.C. with flexible booking policies on momondo?

Yes. All flights to Washington, D.C. from Missouri on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Missouri to Washington, D.C.?

Once you have performed a search for Missouri to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Missouri to Washington, D.C. right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from Missouri and alert you when they change.

An easier way to manage your Washington, D.C. trip

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Fly into one of these airports located in Washington, D.C.

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Cheap flights from Missouri to Washington, D.C. from $63

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Washington, D.C. departing on 6/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Missouri to Washington, D.C.

Our best United Airlines deals on Missouri to Washington, D.C. flight tickets

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How to get the cheapest flight ticket from Missouri to Washington, D.C.

What is the cheapest month to fly to Washington, D.C.?

What is the cheapest day to depart on your flight to Washington, D.C.?

What is the cheapest time of day to depart on your flight to Washington, D.C.?

What is the cheapest Missouri to Washington, D.C. flight route?

How far in advance should I book a flight from Missouri to Washington, D.C.?

Can stopping save me money on Missouri to Washington, D.C. flights?

What is the cheapest airline that flies from Missouri to Washington, D.C.?

What airlines fly to Washington, D.C.?

How many flights depart from Missouri to Washington, D.C. on average per day?

How many flights depart from Missouri to Washington, D.C. on average per week?

How long does it take to fly to Washington, D.C.?

Cheap Missouri to Washington, D.C. flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Washington, D.C.

Best Price Found

Fastest flight time

Direct flights

Airports in Washington, D.C.

Frequently asked questions about flying from Missouri to Washington, D.C.

Best airlines flying from Missouri to Washington, D.C.

Compare and see reviews for airlines that fly from Missouri to Washington, D.C. with momondo

Traveling to a place near Washington, D.C.?

Why use momondo?

An easier way to manage your Washington, D.C. trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.

Fly your favorite airline to Washington, D.C.

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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