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Cheap flights from Missouri to Washington, D.C. from $55

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 12/4. 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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Frontier Logo
10:47 am - 5:25 pmSTL-IAD
5h 38m1 stop
Frontier Logo
5:35 am - 9:40 amIAD-STL
5h 05m1 stop
$190Frontier
Find Deal
Mon, Dec 15 - Thu, Jan 1
Frontier Logo
7:24 pm - 5:46 pmSTL-IAD
21h 22m2 stops
Frontier Logo
11:20 am - 6:19 pmIAD-STL
7h 59m1 stop
$191Frontier
Find Deal
Wed, Nov 19 - Mon, Nov 24
United Airlines Logo
8:30 am - 11:40 amSTL-IAD
2h 10mnonstop
United Airlines Logo
5:19 pm - 11:42 pmIAD-STL
7h 23m1 stop
$227United Airlines
Find Deal
Tue, Dec 9 - Mon, Dec 15
United Airlines Logo
3:24 pm - 9:17 pmMCI-IAD
4h 53m1 stop
United Airlines Logo
5:55 pm - 7:56 pmIAD-MCI
3h 01mnonstop
$233United Airlines
Find Deal
Tue, Jan 20 - Wed, Jan 21
Multiple Airlines Logo
6:00 am - 7:50 amMCI-IAD
24h 50m1 stop
Multiple Airlines Logo
7:18 pm - 11:18 amIAD-MCI
17h 00m1 stop
$242Multiple Airlines
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Thu, Nov 27 - Thu, Dec 4
Delta Logo
5:50 am - 11:33 amMCI-IAD
4h 43m1 stop
Delta Logo
10:08 am - 2:21 pmIAD-MCI
5h 13m1 stop
$243Delta
Find Deal
Wed, Dec 3 - Wed, Dec 10
Multiple Airlines Logo
3:47 pm - 8:24 pmMCI-IAD
27h 37m1 stop
Multiple Airlines Logo
9:00 am - 3:45 pmIAD-MCI
31h 45m2 stops
$244Multiple Airlines
Find Deal
Thu, Dec 4 - Wed, Dec 10
Delta Logo
6:00 am - 11:34 amSGF-IAD
4h 34m1 stop
Delta Logo
7:00 am - 11:14 amIAD-SGF
5h 14m1 stop
$249Delta
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Tue, Mar 3 - Tue, Mar 10
American Airlines Logo
7:03 am - 4:49 pmSGF-IAD
8h 46m2 stops
American Airlines Logo
6:44 am - 10:34 amIAD-SGF
4h 50m1 stop
$284American Airlines
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Wed, Nov 19 - Sun, Nov 23
American Airlines Logo
6:44 am - 4:14 pmMCI-IAD
8h 30m1 stop
American Airlines Logo
11:25 am - 10:54 pmIAD-MCI
12h 29m2 stops
$294American Airlines
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Wed, Dec 3 - Wed, Dec 10

Frontier flights from Missouri to Washington, D.C. Dulles Intl Airport

Our best Frontier deals on Missouri to Washington, D.C. Dulles Intl Airport flight tickets
Frontier
Dec 15
STL10:47 amLambert-St Louis
5h 38m
1 stop
IAD5:25 pmWashington, D.C. Dulles Intl
Jan 1
IAD5:35 amWashington, D.C. Dulles Intl
5h 05m
1 stop
STL9:40 amLambert-St Louis
$190
Find similar
Frontier
Nov 19
STL7:24 pmLambert-St Louis
21h 22m
2 stops
IAD5:46 pmWashington, D.C. Dulles Intl
Nov 24
IAD11:20 amWashington, D.C. Dulles Intl
7h 59m
1 stop
STL6:19 pmLambert-St Louis
$191
Find similar
Frontier
Nov 18
STL7:45 pmLambert-St Louis
23h 35m
2 stops
IAD8:20 pmWashington, D.C. Dulles Intl
Dec 4
IAD5:45 amWashington, D.C. Dulles Intl
6h 22m
1 stop
STL11:07 amLambert-St Louis
$198
Find similar

American Airlines flights from Missouri to Washington, D.C. Dulles Intl Airport

Our best American Airlines deals on Missouri to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
Nov 19
SGF7:03 amSpringfield-Branson
8h 46m
2 stops
IAD4:49 pmWashington, D.C. Dulles Intl
Nov 23
IAD6:44 amWashington, D.C. Dulles Intl
4h 50m
1 stop
SGF10:34 amSpringfield-Branson
$284
Find similar
American Airlines
Dec 3
MCI6:44 amKansas City
8h 30m
1 stop
IAD4:14 pmWashington, D.C. Dulles Intl
Dec 10
IAD11:25 amWashington, D.C. Dulles Intl
12h 29m
2 stops
MCI10:54 pmKansas City
$294
Find similar
American Airlines
Dec 3
MCI10:45 amKansas City
11h 23m
2 stops
IAD11:08 pmWashington, D.C. Dulles Intl
Dec 10
IAD11:25 amWashington, D.C. Dulles Intl
12h 29m
2 stops
MCI10:54 pmKansas City
$299
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Missouri to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated November 6, 2025.
Use the filters below to find and compare flights from Missouri to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Mon 12/15

10:47 am-5:25 pm

1 stop5h 38m

Washington, D.C. Dulles Intl

Thu 1/1

5:35 am-9:40 am

1 stop5h 05m

$190

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Wed 11/19

7:24 pm-5:46 pm

2 stops21h 22m

Washington, D.C. Dulles Intl

Mon 11/24

11:20 am-6:19 pm

1 stop7h 59m

$191

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Tue 12/9

8:30 am-11:40 am

Nonstop2h 10m

Washington, D.C. Dulles Intl

Mon 12/15

5:19 pm-11:42 pm

1 stop7h 23m

$227

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Tue 1/20

3:24 pm-9:17 pm

1 stop4h 53m

Washington, D.C. Dulles Intl

Wed 1/21

5:55 pm-7:56 pm

Nonstop3h 01m

$233

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Thu 11/27

6:00 am-7:50 am

1 stop24h 50m

Washington, D.C. Dulles Intl

Thu 12/4

7:18 pm-11:18 am

1 stop17h 00m

$242

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Wed 12/3

5:50 am-11:33 am

1 stop4h 43m

Washington, D.C. Dulles Intl

Wed 12/10

10:08 am-2:21 pm

1 stop5h 13m

$243

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Thu 12/4

3:47 pm-8:24 pm

1 stop27h 37m

Washington, D.C. Dulles Intl

Wed 12/10

9:00 am-3:45 pm

2 stops31h 45m

$244

SpringfieldWashington, D.C.

SGF - IAD

SGFIAD

Springfield-Branson

Tue 3/3

6:00 am-11:34 am

1 stop4h 34m

Washington, D.C. Dulles Intl

Tue 3/10

7:00 am-11:14 am

1 stop5h 14m

$249

SpringfieldWashington, D.C.

SGF - IAD

SGFIAD

Springfield-Branson

Wed 11/19

7:03 am-4:49 pm

2 stops8h 46m

Washington, D.C. Dulles Intl

Sun 11/23

6:44 am-10:34 am

1 stop4h 50m

$284

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Wed 12/3

6:44 am-4:14 pm

1 stop8h 30m

Washington, D.C. Dulles Intl

Wed 12/10

11:25 am-10:54 pm

2 stops12h 29m

$294

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

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

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 Washington, D.C. Dulles Intl Airport?

In general, March is the cheapest month to fly from Missouri to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $300. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of March, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $304.

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

Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $793. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Missouri to Washington, D.C. Dulles Intl Airport for around $1,129.

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

Flying to Washington, D.C. Dulles Intl Airport from Missouri in the evening is the least expensive time of day to depart. momondo users have found prices as low as $262 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,150 on average. Flights to Washington, D.C. Dulles Intl Airport from Missouri at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $372 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Missouri for as low as $246 on momondo.

What cabin class options are available on Missouri to Washington, D.C. Dulles Intl flights?

There are 4 cabin classes available to choose from on Missouri to Washington, D.C. Dulles Intl 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 Washington, D.C. Dulles Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Missouri to Washington, D.C. Dulles Intl Airport.

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

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

Best Price Found

$259

Fastest flight time

2h 06m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Missouri in the past 72 hours is $259. The best round-trip flight deal from Missouri to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $470.
The fastest flight from Missouri to Washington, D.C. Dulles Intl Airport takes 2h 06m
Direct flights go from Missouri to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

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

    Prices for flights from Missouri to Washington, D.C. Dulles Intl Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Missouri to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport. 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. Dulles Intl Airport?

Best airlines flying from Missouri to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Missouri to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $111Free CancellationRating
5.8
3,115 reviews
Search Frontier flights
DeltaPriceFrom $124Free CancellationRating
7.9
8,001 reviews
Search Delta flights
United AirlinesPriceFrom $238Free CancellationRating
7.4
9,007 reviews
Search United Airlines flights
American AirlinesPriceFrom $250Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Reston
Manassas
Gaithersburg
Fairfax
Glen Burnie

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Missouri to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Missouri to Washington, D.C. flights to just show those with flexible booking policies.

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

Once all potential Missouri to Washington, D.C. 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 Washington, D.C. right now. Can momondo alert me if prices change?

Price alerts on flights to Washington, D.C. from Missouri are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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