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Missouri

$70+ Cheap flights from Dulles Intl (IAD) to Missouri

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — STL
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Cheap flight deals from Dulles Intl to Missouri

Cheapest flights from Dulles Intl to Missouri
Explore the most affordable flight options available from Dulles Intl to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.

This Frontier deal was found by Cheapflights users on 3/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:00 am
IAD
-
STL
1 stop8h 22m
Frontier
Thu 8/62:17 pm
STL
-
IAD
1 stop9h 32m
Frontier
Deal found 3/6$270
This CheapOair deal was found by Cheapflights users on 3/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/238:09 am
IAD
-
STL
1 stop16h 10m
Frontier
Wed 4/14:54 pm
STL
-
IAD
1 stop19h 50m
Frontier
Deal found 3/7$271
This American Airlines deal was found by Cheapflights users on 3/6. 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.
Sat 4/45:00 am
IAD
-
STL
1 stop4h 35m
American Airlines
Sat 4/116:53 pm
STL
-
IAD
1 stop4h 06m
American Airlines
Deal found 3/6$273
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:00 am
IAD
-
STL
2 stops17h 19m
Frontier
Sat 4/188:23 pm
STL
-
IAD
1 stop11h 33m
Frontier
Deal found 3/7$274
This Delta deal was found by Cheapflights users on 3/9. 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.
Sat 5/27:06 am
IAD
-
STL
1 stop5h 50m
Delta
Sat 5/167:05 pm
STL
-
IAD
1 stop4h 46m
Delta
Deal found 3/9$275
This American Airlines deal was found by Cheapflights users on 3/7. 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.
Sat 5/238:22 pm
IAD
-
STL
1 stop4h 21m
American Airlines
Wed 5/276:12 pm
STL
-
IAD
1 stop5h 01m
American Airlines
Deal found 3/7$276
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Sat 4/115:50 pm
IAD
-
MCI
Nonstop2h 58m
United Airlines
Mon 4/139:55 am
MCI
-
IAD
1 stop6h 14m
United Airlines
Deal found 3/8$276
This Southwest deal was found by Cheapflights users on 3/10. 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.
Wed 4/154:30 pm
IAD
-
STL
1 stop7h 40m
Southwest
Sat 4/186:10 am
STL
-
IAD
2 stops15h 45m
Southwest
Deal found 3/10$277
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/238:09 am
IAD
-
STL
1 stop16h 10m
Frontier
Sun 3/294:51 pm
STL
-
IAD
1 stop13h 33m
Frontier
Deal found 3/10$278
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/136:15 am
IAD
-
STL
2 stops18h 10m
Frontier
Fri 4/178:23 pm
STL
-
IAD
1 stop12h 31m
Frontier
Deal found 3/7$279
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/28:12 am
IAD
-
MCI
1 stop9h 54m
Multiple Airlines
Sun 5/1011:13 am
MCI
-
IAD
1 stop20h 43m
Multiple Airlines
Deal found 3/7$279
This Lucky2Go deal was found by Cheapflights users on 3/7. 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 Lucky2Go is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:00 am
IAD
-
STL
1 stop12h 34m
Frontier
Mon 4/64:59 pm
STL
-
IAD
2 stops44h 21m
Frontier
Deal found 3/7$280

Find flight deals from Dulles Intl to Missouri

Keep the following information in mind while searching for Dulles Intl to Missouri flight deals. Data was last updated March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$270
(Frontier)

One-way from

$70
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$354

Good round-trip deal

$388 or less

Good one-way deal

$204 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lambert-St Louis flights.
Search Deals
From Washington, D.C. Dulles Intl to Missouri
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Missouri
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Missouri.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Missouri.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Missouri 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 March 10, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Missouri that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Kansas City

IAD - MCI

IADMCI

Washington, D.C. Dulles Intl

Sat 4/18

5:50 am-1:00 pm

1 stop8h 10m

Kansas City

Tue 4/21

9:35 am-4:50 pm

1 stop6h 15m

$283

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Tue 3/31

5:41 pm-11:57 pm

1 stop7h 16m

Lambert-St Louis

Wed 4/1

1:10 pm-7:23 pm

1 stop5h 13m

$291

Washington, D.C.Kansas City

IAD - MCI

IADMCI

Washington, D.C. Dulles Intl

Sat 4/4

1:05 pm-3:02 pm

Nonstop2h 57m

Kansas City

Sat 4/11

12:40 pm-4:16 pm

Nonstop2h 36m

$295

Washington, D.C.Kansas City

IAD - MCI

IADMCI

Washington, D.C. Dulles Intl

Sat 4/11

5:50 pm-7:48 pm

Nonstop2h 58m

Kansas City

Mon 4/13

1:05 pm-7:23 pm

1 stop5h 18m

$301

Washington, D.C.Springfield

IAD - SGF

IADSGF

Washington, D.C. Dulles Intl

Tue 6/9

5:25 pm-10:35 pm

1 stop6h 10m

Springfield-Branson

Mon 6/15

6:45 pm-12:09 am

1 stop4h 24m

$314

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Sun 4/5

9:00 am-10:28 am

Nonstop2h 28m

Lambert-St Louis

Wed 4/8

10:00 am-4:03 pm

1 stop5h 03m

$337

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Fri 4/24

9:00 am-10:28 am

Nonstop2h 28m

Lambert-St Louis

Tue 4/28

6:30 am-11:48 am

1 stop4h 18m

$344

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 4/1

7:29 pm-11:58 pm

1 stop5h 29m

Lambert-St Louis

Sun 4/12

6:32 am-11:32 am

1 stop4h 00m

$347

Washington, D.C.Kansas City

IAD - MCI

IADMCI

Washington, D.C. Dulles Intl

Thu 4/30

6:00 am-9:49 am

1 stop4h 49m

Kansas City

Mon 5/4

5:46 pm-11:03 pm

1 stop4h 17m

$347

Washington, D.C.Columbia

IAD - COU

IADCOU

Washington, D.C. Dulles Intl

Wed 4/15

10:10 am-2:48 pm

1 stop5h 38m

Columbia Regional

Sat 4/18

8:00 am-4:03 pm

1 stop7h 03m

$348

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

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

Have a flexible travel schedule? Discover the best time to fly to Missouri from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Missouri

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Missouri?

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Missouri (average of $124). Flying from Washington, D.C. Dulles Intl Airport to Missouri in March is currently the most expensive (average of $319). 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 IAD to MO?

Find hourly flight availability from Dulles Intl to Missouri. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 10, 2026.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Missouri at noon. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Missouri?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Missouri. Price data was last updated on February 21, 2026.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Missouri flight should consider departing on Friday evenings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Missouri

Explore weekly flight availability from Dulles Intl to Missouri. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 10, 2026.

The most flights from IAD to USMO are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

Reviews of airlines servicing Missouri

Get insights into the airlines that provide service to Missouri. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Missouri. Reviews last updated March 10, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican Airlines from Washington, D.C. Dulles Intl Airport to Missouri to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,276 reviews

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,276 reviews
Delta
7.9
Good
8,276 reviews

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,409 reviews
Delta
7.9
Good
8,276 reviews

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,414 reviews
Delta
7.9
Good
8,276 reviews

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.7
Fair
3,033 reviews
Delta
7.9
Good
8,276 reviews

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Missouri. 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 Washington, D.C. Dulles Intl Airport to Missouri?

    Southwest, United Airlines, and Delta can get you from Washington, D.C. Dulles Intl Airport to Missouri in just under 6h 10m. Your travel time can differ by up to 2h. The distance from Washington, D.C. Dulles Intl Airport to Missouri is about 873 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Missouri?

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

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Missouri?

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. Dulles Intl Airport to Missouri consider choosing Republic Airways (100%), United Airlines (86%) or GoJet (82%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Missouri?

    Looking at all options, your cheapest flight can be booked for $297. While the most popular route (Washington, D.C. Dulles Intl - Lambert-St Louis) can be booked for $226 on average, our data indicates $670 when flying from Washington, D.C. Dulles Intl Airport to Missouri.

  • Can I find deals for flights from Dulles Intl to Missouri that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Missouri flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Missouri?

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

  • Can I find deals for business class flights from Dulles Intl to Missouri?

    Yes. Cheapflights offers flight deals from Dulles Intl to Missouri 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 Washington, D.C. Dulles Intl Airport to Missouri?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Missouri (average of $124). Flying from Washington, D.C. Dulles Intl Airport to Missouri in March is currently the most expensive (average of $319). 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

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Alternative routes for Dulles Intl to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
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Baltimore to Tampa flights
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Baltimore to San Francisco flights
Baltimore to Seattle flights
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Dulles Intl to Austin flights
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Top 4 airlines flying from Dulles Intl to Missouri

Discover the top 4 airlines that operate flights from Dulles Intl to Missouri. 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$220FlexibilityNo cancel feeOn-time62%
DeltaCheapest$124Average$358FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$227Average$405FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$248Average$396FlexibilityNo cancel feeOn-time71%

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