Dulles Intl

$96+ Cheap flights from Missouri to Dulles Intl (IAD)

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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IAD
abr. 20 — abr. 271
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Cheap flight deals from Missouri to Dulles Intl

Keep the following information in mind while searching for Missouri to Dulles Intl flight deals. Data was last updated abril 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$214
(United Airlines)

One-way from

$96
(Mytrip)

Popular in

March

Cheapest in

November

Average price

$371

Good round-trip deal

$714 or less

Good one-way deal

$226 or less
Provider with most accurate pricing for Kansas City-Washington, D.C. (WAS) flight deals.
Provider most trusted by Cheapflights users for Kansas City-Washington, D.C. (WAS) flights.
From Missouri to Washington, D.C. Dulles Intl
One-way flight from Missouri to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 7% potential increase in price ($25 potential increase over avg. RT price).
Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from Missouri to Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from Missouri to Washington, D.C. Dulles Intl.

Find flight deals from Missouri to Dulles Intl

Cheapest flights from Missouri to Dulles Intl
Explore the most affordable flight options available from Missouri to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 15, 2025.

This United Airlines deal was found by Cheapflights users on 4/14. 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.
sáb. 5/245:33 pmSTL - IAD
1 stop5h 57mUnited Airlines
dom. 5/255:10 pmIAD - STL
1 stop6h 37mUnited Airlines
Deal found 4/14$214
This Delta deal was found by Cheapflights users on 4/13. 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.
jue. 5/297:06 pmSTL - IAD
1 stop4h 22mDelta
sáb. 5/316:00 amIAD - STL
1 stop6h 54mDelta
Deal found 4/13$217
This Booking.com deal was found by Cheapflights users on 4/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/245:41 pmSTL - IAD
1 stop21h 54mFrontier
sáb. 4/265:35 pmIAD - STL
1 stop7h 29mFrontier
Deal found 4/14$218
This United Airlines deal was found by Cheapflights users on 4/14. 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.
vie. 5/96:00 amMCI - IAD
1 stop7h 06mUnited Airlines
sáb. 5/101:20 pmIAD - MCI
Nonstop2h 49mUnited Airlines
Deal found 4/14$295
This American Airlines deal was found by Cheapflights users on 4/15. 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.
sáb. 6/74:17 pmSTL - IAD
1 stop6h 42mAmerican Airlines
sáb. 6/148:14 pmIAD - STL
1 stop4h 45mAmerican Airlines
Deal found 4/15$297
This American Airlines deal was found by Cheapflights users on 4/15. 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.
jue. 6/266:33 pmMCI - IAD
1 stop4h 26mAmerican Airlines
mié. 7/21:08 pmIAD - MCI
1 stop5h 27mAmerican Airlines
Deal found 4/15$297
This Frontier deal was found by Cheapflights users on 4/14. 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.
lun. 6/1611:20 amMCI - IAD
1 stop11h 44mFrontier
mié. 6/256:10 amIAD - MCI
1 stop8h 14mFrontier
Deal found 4/14$302
This Delta deal was found by Cheapflights users on 4/14. 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.
vie. 5/93:48 pmMCI - IAD
1 stop4h 46mDelta
sáb. 5/106:00 amIAD - MCI
1 stop4h 25mDelta
Deal found 4/14$305
This Mytrip deal was found by Cheapflights users on 4/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/2311:43 amMCI - IAD
1 stop25h 56mMultiple Airlines
mié. 5/288:25 amIAD - MCI
3 stops39h 16mMultiple Airlines
Deal found 4/14$325
This Mytrip deal was found by Cheapflights users on 4/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/134:17 pmSTL - IAD
2 stops21h 15mMultiple Airlines
dom. 6/1511:52 amIAD - STL
2 stops28h 30mMultiple Airlines
Deal found 4/14$353
This Southwest deal was found by Cheapflights users on 4/14. 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.
sáb. 11/14:05 pmMCI - IAD
1 stop5h 55mSouthwest
mié. 11/57:40 amIAD - MCI
1 stop8h 55mSouthwest
Deal found 4/14$354
This American Airlines deal was found by Cheapflights users on 4/14. 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.
sáb. 5/244:09 pmSGF - IAD
1 stop6h 53mAmerican Airlines
lun. 6/91:08 pmIAD - SGF
1 stop5h 39mAmerican Airlines
Deal found 4/14$433

Cheapflights Fare Finder

Customize your flight search to find flights from Missouri to Dulles Intl 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 abril 15, 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

Missouri

Fly to

Dulles Intl

Route

Depart

Return

Price

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

sáb. 5/24

5:33 pm-12:30 am

1 stop5h 57m

Washington, D.C. Dulles Intl

dom. 5/25

5:10 pm-10:47 pm

1 stop6h 37m

$214

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

jue. 5/29

7:06 pm-12:28 am

1 stop4h 22m

Washington, D.C. Dulles Intl

sáb. 5/31

6:00 am-11:54 am

1 stop6h 54m

$217

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

jue. 4/24

5:41 pm-4:35 pm

1 stop21h 54m

Washington, D.C. Dulles Intl

sáb. 4/26

5:35 pm-12:04 am

1 stop7h 29m

$218

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

vie. 5/9

6:00 am-2:06 pm

1 stop7h 06m

Washington, D.C. Dulles Intl

sáb. 5/10

1:20 pm-3:09 pm

Nonstop2h 49m

$295

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

sáb. 6/7

4:17 pm-11:59 pm

1 stop6h 42m

Washington, D.C. Dulles Intl

sáb. 6/14

8:14 pm-11:59 pm

1 stop4h 45m

$297

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

jue. 6/26

6:33 pm-11:59 pm

1 stop4h 26m

Washington, D.C. Dulles Intl

mié. 7/2

1:08 pm-5:35 pm

1 stop5h 27m

$297

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

lun. 6/16

11:20 am-12:04 am

1 stop11h 44m

Washington, D.C. Dulles Intl

mié. 6/25

6:10 am-1:24 pm

1 stop8h 14m

$302

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

vie. 5/9

1:15 pm-6:47 pm

1 stop4h 32m

Washington, D.C. Dulles Intl

mar. 5/13

9:40 am-1:18 pm

1 stop4h 38m

$305

Kansas CityWashington, D.C.

MCI - IAD

MCIIAD

Kansas City

vie. 5/23

11:43 am-2:39 pm

1 stop25h 56m

Washington, D.C. Dulles Intl

mié. 5/28

8:25 am-10:41 pm

3 stops39h 16m

$325

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

vie. 6/13

4:17 pm-2:32 pm

2 stops21h 15m

Washington, D.C. Dulles Intl

dom. 6/15

11:52 am-3:22 pm

2 stops28h 30m

$353

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 34 results
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Best time to book a flight from Missouri to Dulles Intl

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

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

Currently, August is the cheapest month in which you can book a flight from Missouri to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Missouri to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $383). 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 MO to IAD?

Find hourly flight availability from Missouri to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated abril 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missouri to Washington, D.C. Dulles Intl Airport as you normally would.

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

Explore weekly flight availability from Missouri to Dulles Intl. 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 abril 15, 2025.

The most flights from USMO to IAD are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated abril 15, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Missouri to Washington, D.C. by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
8.0
Very good

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

Find useful and relevant information for your journey from Missouri to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines to fly from Missouri to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airlines for a one-way flight from Missouri to Washington, D.C. Dulles Intl Airport are Frontier ($96), United Airlines ($100), and Delta ($109).

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

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Missouri to Washington, D.C. Dulles Intl Airport on time: Brussels Airlines (85%), Lufthansa (85%), GoJet (84%).

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

    On average you can expect to pay $1,424 for a flight from Missouri to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $139 while the most popular route, (Lambert-St Louis - Washington, D.C. Dulles Intl) is currently priced at $204.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Missouri to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Missouri to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $383). 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

Traveling to a place near Missouri?

Book flights to Missouri if you plan to visit one of these locations
Arlington
Alexandria
Fairfax
Tysons
Springfield
Woodbridge
Rockville
Fredericksburg
Gaithersburg
Silver Spring
Linthicum Heights
Falls Church
Laurel
Easton
Herndon
Sterling
Bowie
Gettysburg
National Harbor
Oxon Hill

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Alternative routes for Missouri to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Missouri to Dulles Intl

Discover the top 3 airlines that operate flights from Missouri to Dulles Intl. 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 abril 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$129Average$353FlexibilityNo cancel feeOn-time71%
DeltaCheapest$207Average$291FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$211Average$430FlexibilityNo cancel feeOn-time69%

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