$112 Cheap Flights from Des Moines (DSM) to Washington (IAD)

View $112 flight on Wed, Nov 19, 2025Opens in a new window

Popular airlines from Des Moines International Airport (DSM) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Des Moines to Washington (DSM-IAD)

Prices were available within the past 7 days and start at $112 for one-way flights and $228 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Oct 6 - Tue, Oct 7
DSM
Des Moines
IAD
Washington
$228 Roundtrip, found 3 days ago
$228
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Oct 6 from Des Moines to Washington, returning Tue, Oct 7, priced at $228 found 3 days ago
American Airlines
Sat, Dec 6 - Sat, Dec 13
DSM
Des Moines
IAD
Washington
$235 Roundtrip, found 4 days ago
$235
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Dec 6 from Des Moines to Washington, returning Sat, Dec 13, priced at $235 found 4 days ago
United
Thu, Nov 6 - Mon, Nov 10
DSM
Des Moines
IAD
Washington
$237 Roundtrip, found 3 days ago
$237
Roundtrip
found 3 days ago
Select United flight, departing Thu, Nov 6 from Des Moines to Washington, returning Mon, Nov 10, priced at $237 found 3 days ago
United
Sat, Dec 13 - Wed, Dec 17
DSM
Des Moines
IAD
Washington
$240 Roundtrip, found 3 days ago
$240
Roundtrip
found 3 days ago
Select United flight, departing Sat, Dec 13 from Des Moines to Washington, returning Wed, Dec 17, priced at $240 found 3 days ago
American Airlines
Sat, Dec 6 - Sat, Dec 13
DSM
Des Moines
IAD
Washington
$251 Roundtrip, found 4 days ago
$251
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Dec 6 from Des Moines to Washington, returning Sat, Dec 13, priced at $251 found 4 days ago
United
Tue, Nov 4 - Wed, Nov 12
DSM
Des Moines
IAD
Washington
$252 Roundtrip, found 5 days ago
$252
Roundtrip
found 5 days ago
Select United flight, departing Tue, Nov 4 from Des Moines to Washington, returning Wed, Nov 12, priced at $252 found 5 days ago
Delta
Sat, Dec 6 - Sun, Dec 14
DSM
Des Moines
IAD
Washington
$253 Roundtrip, found 3 days ago
$253
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Dec 6 from Des Moines to Washington, returning Sun, Dec 14, priced at $253 found 3 days ago
United
Thu, Nov 6 - Mon, Nov 10
DSM
Des Moines
IAD
Washington
$258 Roundtrip, found 3 days ago
$258
Roundtrip
found 3 days ago
Select United flight, departing Thu, Nov 6 from Des Moines to Washington, returning Mon, Nov 10, priced at $258 found 3 days ago
United
Mon, Nov 3 - Tue, Nov 11
DSM
Des Moines
IAD
Washington
$261 Roundtrip, found 5 days ago
$261
Roundtrip
found 5 days ago
Select United flight, departing Mon, Nov 3 from Des Moines to Washington, returning Tue, Nov 11, priced at $261 found 5 days ago
Southwest Airlines
Wed, Dec 17 - Thu, Dec 18
DSM
Des Moines
IAD
Washington
$374 Roundtrip, found 12 hours ago
$374
Roundtrip
found 12 hours ago
Select Southwest Airlines flight, departing Wed, Dec 17 from Des Moines to Washington, returning Thu, Dec 18, priced at $374 found 12 hours ago

Find the cheapest month to fly from Des Moines (DSM) to Washington (IAD)

November is typically the cheapest month to fly

From $196 - $550 per traveler.

Frequently asked questions

How much does a flight from Des Moines Intl. Airport (DSM) to Washington Dulles Intl. Airport (IAD) cost?
Grab a cheap one-way flight from $112 or cheap return flight from $228 from Des Moines Intl. Airport (DSM) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Des Moines Intl. Airport (DSM) to Washington Dulles Intl. Airport (IAD)?
Traveling in October may help you find better deals, as it's the cheapest month for flights between DSM and IAD. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Des Moines Intl. Airport (DSM) to Washington Dulles Intl. Airport (IAD)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from DSM to IAD. Then, sort your results by "Price (lowest to highest)" to score a great deal.
How many flights per day from Des Moines Intl. Airport (DSM) to Washington Dulles Intl. Airport (IAD)?
You'll have to take a flight with a layover when traveling from Des Moines Intl. Airport (DSM) to Washington Dulles Intl. Airport (IAD). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from DSM to IAD?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on a number of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Des Moines Intl. Airport (DSM) to Washington Dulles Intl. Airport (IAD)?
Select a flight from Des Moines Intl. Airport (DSM) to Washington Dulles Intl. Airport (IAD) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Washington from Des Moines Intl. Airport (DSM)?
If you're flying on a direct flight from Des Moines Intl. Airport (DSM) to Washington, Ronald Reagan Washington National Airport (DCA) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Des Moines Intl. Airport (DSM) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your plane ticket from DSM to IAD right before your journey is generally more expensive. But if you're flexible with your departure dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book a DSM to IAD flight and hotel package?
Opting for a DSM to IAD flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Des Moines Intl. Airport (DSM) to Washington Dulles Intl. Airport (IAD)?
Typically, you're able to reschedule or cancel your DSM to IAD flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you need more details, head to our Customer Service portal.

Travel information

Travel information

Origin airport
Des Moines Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$227
Distance
871 mi

Book with confidence

Book with confidence

Des Moines to Washington Flights

The cheapest times to fly from Des Moines to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Des Moines to Washington are during the month of October. You can find some of the cheapest flights from Des Moines to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Des Moines to Washington

Sunday is one of the best days to book for cheap flights from Des Moines to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Des Moines to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Des Moines to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $112 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Des Moines to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Des Moines to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Des Moines to Washington Flights

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*Available to One Key members.