What is the cheapest airline that flies from Missouri to District of Columbia?

Frontier, American Airlines, and Southwest are the most popular carriers operating from Missouri to District of Columbia

How many flights depart from Missouri to District of Columbia on average per week?

As of July 2025, there are 161 flights per week flying from Missouri to District of Columbia. The most common day of the week flights depart is Mon, with 19% of flights taking off on this day.

What airlines fly to District of Columbia?

Southwest, American Airlines and United Airlines are the top three most popular airlines that fly to District of Columbia from Missouri according to our data. Southwest is the first choice among our users, with 39% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 6 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

How long is the flight from Missouri to District of Columbia?

On average, it takes 2h to fly from Missouri to District of Columbia if you fly out of St. Louis (the most popular airport in Missouri) and into Baltimore (the most popular airport in District of Columbia). If you’re flying out of Kansas City and into Baltimore, then the flight time is around 2h 20m.

How many flights depart from Missouri to District of Columbia on average per day?

As of July 2025, there are 23 flights per day flying from Missouri to District of Columbia. The most common time of day flights depart is 8:00AM, with 48% of flights taking off in the afternoon.

When did momondo last update prices for flights from Missouri to District of Columbia?

Prices for flights from Missouri to District of Columbia are updated daily.

How many operators does momondo search for flights from Missouri to District of Columbia?

As of July 2025, there are 5 operators available to choose from for flights from Missouri to District of Columbia.

How old do you have to be to fly from Missouri to District of Columbia?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to District of Columbia.

What documentation or ID do you need to fly to District of Columbia?

The required travel and health documents for your District of Columbia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at District of Columbia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$99 Cheap Flights from Missouri to District of Columbia in 2025

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Find the cheapest flights from Missouri to District of Columbia

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

2:52 pm - 11:26 pmSTL-IAD

7h 34m1 stop

6:10 am - 1:33 pmIAD-STL

8h 23m1 stop

$198Frontier

Find Deal

Sat, Aug 16 - Sat, Aug 23

3:02 pm - 11:00 pmSTL-IAD

6h 58m1 stop

6:10 am - 12:56 pmIAD-STL

7h 46m1 stop

$208Frontier

Find Deal

Sat, Aug 30 - Mon, Sep 1

7:01 am - 10:03 amSTL-DCA

2h 02mnonstop

2:56 pm - 4:15 pmDCA-STL

2h 19mnonstop

$217American Airlines

Find Deal

Sat, Sep 13 - Sat, Sep 20

6:00 am - 9:29 amMCI-DCA

2h 29mnonstop

7:59 pm - 9:45 pmDCA-MCI

2h 46mnonstop

$217American Airlines

Find Deal

Sun, Aug 24 - Tue, Aug 26

12:37 pm - 3:59 pmMCI-IAD

2h 22mnonstop

5:45 pm - 7:32 pmIAD-MCI

2h 47mnonstop

$217United Airlines

Find Deal

Wed, Jan 21 - Sat, Jan 24

7:20 pm - 10:25 pmSTL-DCA

2h 05mnonstop

2:30 pm - 7:45 pmDCA-STL

6h 15m1 stop

$227Southwest

Find Deal

Wed, Aug 20 - Sat, Aug 23

7:35 am - 11:00 amMCI-DCA

2h 25mnonstop

2:10 pm - 8:40 pmDCA-MCI

7h 30m1 stop

$227Southwest

Find Deal

Wed, Aug 20 - Wed, Aug 20

3:22 pm - 9:05 pmMCI-IAD

4h 43m1 stop

1:05 pm - 2:50 pmIAD-MCI

2h 45mnonstop

$227United Airlines

Find Deal

Wed, Jan 21 - Sun, Jan 25

5:20 pm - 11:41 pmSTL-DCA

5h 21m1 stop

8:59 am - 12:35 pmDCA-STL

4h 36m1 stop

$237Delta

Find Deal

Sat, Oct 11 - Wed, Oct 15

5:42 pm - 11:46 pmMCI-DCA

5h 04m1 stop

11:00 am - 4:21 pmDCA-MCI

6h 21m1 stop

$237Delta

Find Deal

Sun, Aug 24 - Tue, Aug 26

Frontier flights from Missouri to District of Columbia

Our best Frontier deals on Missouri to District of Columbia flight tickets

Frontier

Aug 16

STL2:52 pmLambert-St Louis

7h 34m

1 stop

IAD11:26 pmWashington, D.C. Dulles Intl

Aug 23

IAD6:10 amWashington, D.C. Dulles Intl

8h 23m

1 stop

STL1:33 pmLambert-St Louis

$198

Find similar

Frontier

Aug 30

STL3:02 pmLambert-St Louis

6h 58m

1 stop

IAD11:00 pmWashington, D.C. Dulles Intl

Sep 1

IAD6:10 amWashington, D.C. Dulles Intl

7h 46m

1 stop

STL12:56 pmLambert-St Louis

$208

Find similar

Frontier

Aug 16

STL2:52 pmLambert-St Louis

7h 34m

1 stop

IAD11:26 pmWashington, D.C. Dulles Intl

Aug 24

IAD9:33 pmWashington, D.C. Dulles Intl

17h 48m

1 stop

STL2:21 pmLambert-St Louis

$215

Find similar

United Airlines flights from Missouri to District of Columbia

Our best United Airlines deals on Missouri to District of Columbia flight tickets

United Airlines

Jan 21

MCI12:37 pmKansas City

2h 22m

IAD3:59 pmWashington, D.C. Dulles Intl

Jan 24

IAD5:45 pmWashington, D.C. Dulles Intl

2h 47m

MCI7:32 pmKansas City

$217

Find similar

United Airlines

Jan 21

MCI3:22 pmKansas City

4h 43m

1 stop

IAD9:05 pmWashington, D.C. Dulles Intl

Jan 25

IAD1:05 pmWashington, D.C. Dulles Intl

2h 45m

MCI2:50 pmKansas City

$227

Find similar

United Airlines

Nov 12

STL7:00 amLambert-St Louis

4h 34m

1 stop

DCA12:34 pmWashington, D.C. Reagan-National

Nov 12

DCA5:00 pmWashington, D.C. Reagan-National

6h 45m

1 stop

STL10:45 pmLambert-St Louis

$232

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Missouri to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Sat 8/16

2:52 pm-11:26 pm

1 stop7h 34m

Washington, D.C. Dulles Intl

Sat 8/23

6:10 am-1:33 pm

1 stop8h 23m

$198

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Sat 8/30

3:02 pm-11:00 pm

1 stop6h 58m

Washington, D.C. Dulles Intl

Mon 9/1

6:10 am-12:56 pm

1 stop7h 46m

$208

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Sat 9/13

7:01 am-10:03 am

Nonstop2h 02m

Washington, D.C. Reagan-National

Sat 9/20

2:56 pm-4:15 pm

Nonstop2h 19m

$217

Kansas CityWashington, D.C.

MCI - DCA

MCIDCA

Kansas City

Sun 8/24

6:00 am-9:29 am

Nonstop2h 29m

Washington, D.C. Reagan-National

Tue 8/26

7:59 pm-9:45 pm

Nonstop2h 46m

$217

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Wed 1/21

12:37 pm-3:59 pm

Nonstop2h 22m

Washington, D.C. Dulles Intl

Sat 1/24

5:45 pm-7:32 pm

Nonstop2h 47m

$217

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Wed 8/20

7:20 pm-10:25 pm

Nonstop2h 05m

Washington, D.C. Reagan-National

Sat 8/23

2:30 pm-7:45 pm

1 stop6h 15m

$227

Kansas CityWashington, D.C.

MCI - DCA

MCIDCA

Kansas City

Wed 8/20

7:35 am-11:00 am

Nonstop2h 25m

Washington, D.C. Reagan-National

Wed 8/20

2:10 pm-8:40 pm

1 stop7h 30m

$227

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Wed 1/21

3:22 pm-9:05 pm

1 stop4h 43m

Washington, D.C. Dulles Intl

Sun 1/25

1:05 pm-2:50 pm

Nonstop2h 45m

$227

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Sat 10/11

5:20 pm-11:41 pm

1 stop5h 21m

Washington, D.C. Reagan-National

Wed 10/15

8:59 am-12:35 pm

1 stop4h 36m

$237

Kansas CityWashington, D.C.

MCI - DCA

MCIDCA

Kansas City

Sun 8/24

5:42 pm-11:46 pm

1 stop5h 04m

Washington, D.C. Reagan-National

Tue 8/26

11:00 am-4:21 pm

1 stop6h 21m

$237

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Missouri to District of Columbia

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 District of Columbia?

In general, August is the cheapest month to fly from Missouri to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $229. If you don’t want to visit District of Columbia in August, then you should wait until November to fly from Missouri, when ticket prices are also cheap, with an average price of $229.

What is the cheapest day to depart on your flight to District of Columbia?

The cheapest day to depart on your flight to District of Columbia is on a Friday when prices can be found for as low as $369. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday is the most expensive day to depart from Missouri because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $480.

What is the cheapest time of day to depart on your flight to District of Columbia?

Flying to District of Columbia from Missouri in the evening is the least expensive time of day to depart. momondo users have found prices as low as $283 when looking at flights departing in the evening. Flights to District of Columbia are more costly at noon, with an average ticket price of $980. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Missouri to District of Columbia flight route?

Fly from Lambert-St Louis to Washington, D.C. Reagan-National for the best Missouri - District of Columbia flight prices

How far in advance should I book a flight to District of Columbia?

You are more likely to see cheaper flights to District of Columbia from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $324 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from Missouri for as low as $239 on momondo.

What cabin class options are available on Missouri to District of Columbia flights?

There are 4 cabin classes available to choose from on Missouri to District of Columbia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Missouri to District of Columbia flights?

No. A direct flight is the cheapest option for a flight between Missouri to District of Columbia.

Cheap Missouri to District of Columbia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to District of Columbia

Best Price Found	$99
Fastest flight time	1h 55m
Direct flights	Every day
Airports in District of Columbia	2 airports

The best one-way flight to District of Columbia from Missouri in the past 72 hours is $99. The best round-trip flight deal from Missouri to District of Columbia found on momondo in the last 72 hours is $198.

The fastest flight from Missouri to District of Columbia takes 1h 55m

Direct flights go from Missouri to District of Columbia every day.

There are 2 airports near District of Columbia: Washington, D.C. Reagan-National (DCA), Washington, D.C. Dulles Intl (IAD)

Search flight deals

When did momondo last update prices for flights from Missouri to District of Columbia?
Prices for flights from Missouri to District of Columbia are updated daily.
How many operators does momondo search for flights from Missouri to District of Columbia?
As of July 2025, there are 5 operators available to choose from for flights from Missouri to District of Columbia.
How old do you have to be to fly from Missouri to District of Columbia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to District of Columbia.
What documentation or ID do you need to fly to District of Columbia?
The required travel and health documents for your District of Columbia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at District of Columbia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Missouri to District of Columbia?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Missouri to District of Columbia is Canadair (Bombardier) Regional Jet 700 (16.33% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (15.93%), Boeing 737-700 Passenger/BBJ1 (winglets) (15.62%), and Boeing 737-800 Passenger/BBJ2 (winglets) (11.40%).

Best airlines flying from Missouri to District of Columbia

Compare and see reviews for airlines that fly from Missouri to District of Columbia with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $111	Free Cancellation	Rating 5.9 3,239 reviews	Search Frontier flights
American Airlines	PriceFrom $129	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Spirit Airlines	PriceFrom $138	Free Cancellation	Rating 6.3 8,049 reviews	Search Spirit Airlines flights
Delta	PriceFrom $168	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Southwest	PriceFrom $190	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
United Airlines	PriceFrom $209	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to District of Columbia?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to District of Columbia from Missouri.

Can I find flights from Missouri to District of Columbia with flexible booking policies on momondo?

Yes. All flights to District of Columbia 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 District of Columbia?

Once all potential Missouri to District of Columbia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Missouri to District of Columbia right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to District of Columbia from Missouri. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your District of Columbia 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.

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Find better results for your trip to District of Columbia

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Cheap flights from Missouri to District of Columbia from $99

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 District of Columbia departing on 8/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Missouri to District of Columbia

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Frontier flights from Missouri to District of Columbia

Our best Frontier deals on Missouri to District of Columbia flight tickets

United Airlines flights from Missouri to District of Columbia

Our best United Airlines deals on Missouri to District of Columbia flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Missouri to District of Columbia that are best for you.

See travel insights to District of Columbia from

How to get the cheapest flight ticket from Missouri to District of Columbia

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

What is the cheapest month to fly to District of Columbia?

What is the cheapest day to depart on your flight to District of Columbia?

What is the cheapest time of day to depart on your flight to District of Columbia?

What is the cheapest Missouri to District of Columbia flight route?

Fly from Lambert-St Louis to Washington, D.C. Reagan-National for the best Missouri - District of Columbia flight prices

How far in advance should I book a flight to District of Columbia?

What cabin class options are available on Missouri to District of Columbia flights?

There are 4 cabin classes available to choose from on Missouri to District of Columbia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Missouri to District of Columbia flights?

No. A direct flight is the cheapest option for a flight between Missouri to District of Columbia.

What is the cheapest airline that flies from Missouri to District of Columbia?

Frontier, American Airlines, and Southwest are the most popular carriers operating from Missouri to District of Columbia

What airlines fly to District of Columbia?

How many flights depart from Missouri to District of Columbia on average per day?

As of July 2025, there are 23 flights per day flying from Missouri to District of Columbia. The most common time of day flights depart is 8:00AM, with 48% of flights taking off in the afternoon.

How many flights depart from Missouri to District of Columbia on average per week?

As of July 2025, there are 161 flights per week flying from Missouri to District of Columbia. The most common day of the week flights depart is Mon, with 19% of flights taking off on this day.

How long is the flight from Missouri to District of Columbia?

Cheap Missouri to District of Columbia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to District of Columbia

Best Price Found

Fastest flight time

Direct flights

Airports in District of Columbia

When did momondo last update prices for flights from Missouri to District of Columbia?

How many operators does momondo search for flights from Missouri to District of Columbia?

How old do you have to be to fly from Missouri to District of Columbia?

What documentation or ID do you need to fly to District of Columbia?

What is the most popular plane model from Missouri to District of Columbia?

Best airlines flying from Missouri to District of Columbia

Compare and see reviews for airlines that fly from Missouri to District of Columbia with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to District of Columbia?

Can I find flights from Missouri to District of Columbia with flexible booking policies on momondo?

How can momondo help me find flights from Missouri to District of Columbia?

I’m not ready to book a flight from Missouri to District of Columbia right now. Can momondo alert me if prices change?

An easier way to manage your District of Columbia 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

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to District of Columbia

Popular cities in District of Columbia

Popular flights according to clicks in the last 7 days on momondo