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Cheap flights from Missouri to Washington, D.C. from $70

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 10/28. 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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0 bags

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Cheap round-trip flights

United Airlines Logo
5:30 pm - 12:32 amSTL-IAD
6h 02m1 stop
United Airlines Logo
8:40 am - 10:02 amIAD-STL
2h 22mnonstop
$166United Airlines
Find Deal
Sat, Aug 30 - Sat, Sep 6
United Airlines Logo
6:35 am - 2:37 pmSTL-IAD
7h 02m1 stop
United Airlines Logo
8:40 am - 10:02 amIAD-STL
2h 22mnonstop
$183United Airlines
Find Deal
Wed, Aug 27 - Sun, Aug 31
United Airlines Logo
5:47 pm - 9:23 pmMCI-IAD
2h 36mnonstop
United Airlines Logo
5:53 pm - 10:35 pmIAD-MCI
5h 42m1 stop
$183United Airlines
Find Deal
Mon, Sep 8 - Fri, Sep 12
United Airlines Logo
6:30 am - 1:51 pmSTL-IAD
6h 21m1 stop
United Airlines Logo
6:50 pm - 10:35 pmIAD-STL
4h 45m1 stop
$193United Airlines
Find Deal
Sat, Sep 27 - Wed, Oct 1
Delta Logo
10:45 am - 5:34 pmSTL-IAD
5h 49m1 stop
Delta Logo
7:22 pm - 11:24 pmIAD-STL
5h 02m1 stop
$197Delta
Find Deal
Fri, Sep 5 - Fri, Sep 12
Frontier Logo
3:02 pm - 11:00 pmSTL-IAD
6h 58m1 stop
Frontier Logo
6:10 am - 12:56 pmIAD-STL
7h 46m1 stop
$208Frontier
Find Deal
Sat, Aug 30 - Mon, Sep 1
Frontier Logo
2:52 pm - 11:26 pmSTL-IAD
7h 34m1 stop
Frontier Logo
9:33 pm - 2:21 pmIAD-STL
17h 48m1 stop
$215Frontier
Find Deal
Sat, Aug 16 - Sun, Aug 24
Delta Logo
5:45 am - 11:23 amMCI-IAD
4h 38m1 stop
Delta Logo
6:00 am - 11:06 amIAD-MCI
6h 06m1 stop
$217Delta
Find Deal
Wed, Aug 27 - Thu, Sep 4
American Airlines Logo
6:18 pm - 11:59 pmSGF-IAD
4h 41m1 stop
American Airlines Logo
11:51 am - 7:03 pmIAD-SGF
8h 12m1 stop
$254American Airlines
Find Deal
Thu, Aug 21 - Mon, Aug 25
American Airlines Logo
5:27 am - 11:34 amSTL-IAD
5h 07m1 stop
American Airlines Logo
6:25 am - 6:22 pmIAD-STL
12h 57m1 stop
$259American Airlines
Find Deal
Sun, Sep 7 - Tue, Sep 16

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

Our best United Airlines deals on Missouri to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
Aug 30
STL5:30 pmLambert-St Louis
6h 02m
1 stop
IAD12:32 amWashington, D.C. Dulles Intl
Sep 6
IAD8:40 amWashington, D.C. Dulles Intl
2h 22m
STL10:02 amLambert-St Louis
$166
Find similar
United Airlines
Aug 27
STL6:35 amLambert-St Louis
7h 02m
1 stop
IAD2:37 pmWashington, D.C. Dulles Intl
Aug 31
IAD8:40 amWashington, D.C. Dulles Intl
2h 22m
STL10:02 amLambert-St Louis
$183
Find similar
United Airlines
Sep 27
STL6:30 amLambert-St Louis
6h 21m
1 stop
IAD1:51 pmWashington, D.C. Dulles Intl
Oct 1
IAD6:50 pmWashington, D.C. Dulles Intl
4h 45m
1 stop
STL10:35 pmLambert-St Louis
$193
Find similar

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

Our best Delta deals on Missouri to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Sep 5
STL10:45 amLambert-St Louis
5h 49m
1 stop
IAD5:34 pmWashington, D.C. Dulles Intl
Sep 12
IAD7:22 pmWashington, D.C. Dulles Intl
5h 02m
1 stop
STL11:24 pmLambert-St Louis
$197
Find similar
Delta
Aug 27
MCI5:45 amKansas City
4h 38m
1 stop
IAD11:23 amWashington, D.C. Dulles Intl
Sep 4
IAD6:00 amWashington, D.C. Dulles Intl
6h 06m
1 stop
MCI11:06 amKansas City
$217
Find similar
Delta
Sep 16
STL6:00 pmLambert-St Louis
4h 06m
1 stop
IAD11:06 pmWashington, D.C. Dulles Intl
Sep 17
IAD12:08 pmWashington, D.C. Dulles Intl
5h 40m
1 stop
STL4:48 pmLambert-St Louis
$219
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 August 5, 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

Sat 8/30

5:30 pm-12:32 am

1 stop6h 02m

Washington, D.C. Dulles Intl

Sat 9/6

8:40 am-10:02 am

Nonstop2h 22m

$166

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Wed 8/27

6:35 am-2:37 pm

1 stop7h 02m

Washington, D.C. Dulles Intl

Sun 8/31

8:40 am-10:02 am

Nonstop2h 22m

$183

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Mon 9/8

5:47 pm-9:23 pm

Nonstop2h 36m

Washington, D.C. Dulles Intl

Fri 9/12

5:53 pm-10:35 pm

1 stop5h 42m

$183

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Sat 9/27

6:30 am-1:51 pm

1 stop6h 21m

Washington, D.C. Dulles Intl

Wed 10/1

6:50 pm-10:35 pm

1 stop4h 45m

$193

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Fri 9/5

10:45 am-5:34 pm

1 stop5h 49m

Washington, D.C. Dulles Intl

Fri 9/12

7:22 pm-11:24 pm

1 stop5h 02m

$197

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 - IAD

STLIAD

Lambert-St Louis

Sat 8/16

2:52 pm-11:26 pm

1 stop7h 34m

Washington, D.C. Dulles Intl

Sun 8/24

9:33 pm-2:21 pm

1 stop17h 48m

$215

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

Wed 8/27

5:45 am-11:23 am

1 stop4h 38m

Washington, D.C. Dulles Intl

Thu 9/4

6:00 am-11:06 am

1 stop6h 06m

$217

SpringfieldWashington, D.C.

SGF - IAD

SGFIAD

Springfield-Branson

Thu 8/21

6:18 pm-11:59 pm

1 stop4h 41m

Washington, D.C. Dulles Intl

Mon 8/25

11:51 am-7:03 pm

1 stop8h 12m

$254

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Sun 9/7

5:27 am-11:34 am

1 stop5h 07m

Washington, D.C. Dulles Intl

Tue 9/16

6:25 am-6:22 pm

1 stop12h 57m

$259

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, January 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 $299. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $300.

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 $739. 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. Dulles Intl Airport for around $1,144.

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 $1,221 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 $381 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 $249 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?

You could potentially save up to 22% on your flight if you consider stops on a Missouri to Washington, D.C. Dulles Intl Airport flight.

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

$70

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 $70. The best round-trip flight deal from Missouri to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $166.
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
American AirlinesPriceFrom $129Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $168Free CancellationRating
8.0
7,985 reviews
Search Delta flights
United AirlinesPriceFrom $209Free CancellationRating
7.4
8,916 reviews
Search United 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
Gettysburg
Arlington
National Harbor
Winchester
Woodbridge
Laurel
Silver Spring
Tysons
Waldorf
Fredericksburg
Harpers Ferry
Colonial Beach
Manassas
Rockville
Towson
Gaithersburg
Fairfax
Reston
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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