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Dulles Intl

$118+ Cheap flights from Des Moines (DSM) 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
DSM — IAD
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
1 adult, Economy
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Cheap flight deals from Des Moines to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Des Moines (DSM) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated julio 3, 2025.

Round-trip from

$269
(Mytrip)

One-way from

$118
(Southwest)

Popular in

August

Cheapest in

December

Average price

$426
From Des Moines to Washington, D.C. Dulles Intl
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One-way flight from Des Moines to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 9% potential increase in price ($48 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Des Moines to Dulles Intl

Cheapest flights from Des Moines to Dulles Intl
Explore the most affordable flight options available from Des Moines to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.

This Mytrip deal was found by Cheapflights users on 7/2. 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.
sáb. 8/21:13 pmDSM - IAD
1 stop6h 45mAllegiant Air
lun. 8/43:13 pmIAD - DSM
2 stops23h 18mAllegiant Air
Deal found 7/2$269
This Southwest deal was found by Cheapflights users on 7/2. 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.
vie. 9/51:55 pmDSM - IAD
1 stop7h 55mSouthwest
lun. 9/87:35 amIAD - DSM
1 stop6h 25mSouthwest
Deal found 7/2$289
This Mytrip deal was found by Cheapflights users on 7/3. 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.
dom. 8/178:30 amDSM - IAD
3 stops25h 50mMultiple Airlines
dom. 8/247:10 pmIAD - DSM
2 stops26h 31mMultiple Airlines
Deal found 7/3$308
This United Airlines deal was found by Cheapflights users on 7/2. 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.
mar. 9/2311:35 amDSM - IAD
2 stops18h 53mUnited Airlines
mié. 9/2410:25 amIAD - DSM
1 stop6h 48mUnited Airlines
Deal found 7/2$312
This Delta deal was found by Cheapflights users on 7/1. 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.
mar. 10/2810:15 amDSM - IAD
1 stop6h 07mDelta
mar. 11/46:15 amIAD - DSM
1 stop8h 53mDelta
Deal found 7/1$369
This American Airlines deal was found by Cheapflights users on 7/3. 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. 8/97:00 amDSM - IAD
1 stop4h 48mAmerican Airlines
jue. 8/148:19 pmIAD - DSM
1 stop4h 26mAmerican Airlines
Deal found 7/3$397

Cheapflights Fare Finder

Customize your flight search to find flights from Des Moines 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 julio 3, 2025.
Use the filters below to find and compare flights from Des Moines to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Des Moines

Fly to

Dulles Intl

Route

Depart

Return

Price

Des MoinesWashington, D.C.

DSM - IAD

DSMIAD

Des Moines

sáb. 8/2

1:13 pm-8:58 pm

1 stop6h 45m

Washington, D.C. Dulles Intl

lun. 8/4

3:13 pm-1:31 pm

2 stops23h 18m

$269

Des MoinesWashington, D.C.

DSM - IAD

DSMIAD

Des Moines

vie. 9/5

1:55 pm-10:50 pm

1 stop7h 55m

Washington, D.C. Dulles Intl

lun. 9/8

7:35 am-1:00 pm

1 stop6h 25m

$289

Des MoinesWashington, D.C.

DSM - IAD

DSMIAD

Des Moines

dom. 8/17

8:30 am-11:20 am

3 stops25h 50m

Washington, D.C. Dulles Intl

dom. 8/24

7:10 pm-8:41 pm

2 stops26h 31m

$308

Des MoinesWashington, D.C.

DSM - IAD

DSMIAD

Des Moines

mar. 9/23

11:35 am-7:28 am

2 stops18h 53m

Washington, D.C. Dulles Intl

mié. 9/24

10:25 am-4:13 pm

1 stop6h 48m

$312

Des MoinesWashington, D.C.

DSM - IAD

DSMIAD

Des Moines

sáb. 8/16

6:00 am-11:32 am

1 stop4h 32m

Washington, D.C. Dulles Intl

sáb. 8/23

1:00 pm-5:44 pm

1 stop5h 44m

$373

Des MoinesWashington, D.C.

DSM - IAD

DSMIAD

Des Moines

sáb. 8/9

7:00 am-12:48 pm

1 stop4h 48m

Washington, D.C. Dulles Intl

jue. 8/14

8:19 pm-11:45 pm

1 stop4h 26m

$397

Des MoinesWashington, D.C.

DSM - IAD

DSMIAD

Des Moines

lun. 9/15

1:55 pm-10:50 pm

1 stop7h 55m

$118

Des MoinesWashington, D.C.

DSM - IAD

DSMIAD

Des Moines

lun. 9/15

10:37 am-11:26 am

3 stops23h 49m

$177

Des MoinesWashington, D.C.

DSM - IAD

DSMIAD

Des Moines

jue. 8/14

11:38 am-12:32 pm

2 stops23h 54m

$210

Des MoinesWashington, D.C.

DSM - IAD

DSMIAD

Des Moines

vie. 8/15

7:33 pm-3:12 pm

2 stops18h 39m

$212

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 12 results
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Best time to book a flight from Des Moines to Dulles Intl

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

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

Currently, August is the cheapest month in which you can book a flight from Des Moines to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Des Moines to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $345). 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 DSM to IAD?

Find hourly flight availability from Des Moines 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 julio 3, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 23% on flights from Des Moines to Washington, D.C. Dulles Intl Airport by exploring options for tickets at noon.

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 julio 3, 2025.
Read through reviews of airlines operating flights from Des Moines to Washington, D.C. Dulles Intl Airport, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,270 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,270 reviews
Southwest
8.0
Very good
4,270 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,970 reviews
Southwest
8.0
Very good
4,270 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,845 reviews
Southwest
8.0
Very good
4,270 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,270 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Allegiant Air
7.2
Good
709 reviews
Southwest
8.0
Very good
4,270 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

Find useful and relevant information for your journey from Des Moines 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 airport do you fly from for flights from Des Moines to Washington, D.C. Dulles Intl?

    Most people fly from Des Moines (DSM) if they book a flight from Des Moines to Washington, D.C. Dulles Intl. On average, Des Moines has 0 outbound flights to Washington, D.C. Dulles Intl per day from 3 airlines. Des Moines is conveniently located just 3.6 mi from Des Moines’s city center.

  • What are the cheapest airlines flying from Des Moines to Washington, D.C. Dulles Intl Airport round-trip?

    Cheapflights users have booked flights from Des Moines to Washington, D.C. Dulles Intl Airport round-trip from $269. Other airlines that can offer you cheap pricing are Southwest, from $289, and United Airlines, from $312. Allegiant Air is priced at 40% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Des Moines to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airlines for a one-way flight from Des Moines to Washington, D.C. Dulles Intl Airport are Southwest ($118), Allegiant Air ($210), and Frontier ($212).

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Des Moines to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Des Moines to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $345). 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 Des Moines?

Book flights to Des Moines if you plan to visit one of these locations
Arlington
Woodbridge
Alexandria
Tysons
Silver Spring
Fredericksburg
Linthicum Heights
Gaithersburg
Fairfax
Easton
Towson
Waldorf
Laurel
Falls Church
Rockville
Springfield
National Harbor
Manassas
Dundalk
Bowie

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Top 3 airlines flying from Des Moines to Dulles Intl

Discover the top 3 airlines that operate flights from Des Moines 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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$262Average$423FlexibilityNo cancel feeOn-time71%
DeltaCheapest$266Average$426FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$329Average$472FlexibilityNo cancel feeOn-time69%

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