$219 Cheap Flights from Sioux Falls (FSD) to Washington (IAD)

View $219 flight on Tue, Jan 20, 2026Opens in a new window

Popular airlines from Sioux Falls Regional Airport (FSD) to Washington Dulles Intl. Airport (IAD)

Cheap Flights from Sioux Falls to Washington (FSD-IAD)

Prices were available within the past 7 days and start at $219 for one-way flights and $259 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Mar 17 - Sun, Apr 5
FSD
Sioux Falls
IAD
Washington
$259 Roundtrip, found 4 hours ago
$259
Roundtrip
found 4 hours ago
Select Delta flight, departing Tue, Mar 17 from Sioux Falls to Washington, returning Sun, Apr 5, priced at $259 found 4 hours ago
Delta
Sat, Mar 14 - Sun, Apr 5
FSD
Sioux Falls
IAD
Washington
$264 Roundtrip, found 4 hours ago
$264
Roundtrip
found 4 hours ago
Select Delta flight, departing Sat, Mar 14 from Sioux Falls to Washington, returning Sun, Apr 5, priced at $264 found 4 hours ago
Delta
Mon, Feb 2 - Sat, Feb 21
FSD
Sioux Falls
IAD
Washington
$269 Roundtrip, found 4 hours ago
$269
Roundtrip
found 4 hours ago
Select Delta flight, departing Mon, Feb 2 from Sioux Falls to Washington, returning Sat, Feb 21, priced at $269 found 4 hours ago
Delta
Wed, Apr 1 - Sun, Apr 19
FSD
Sioux Falls
IAD
Washington
$279 Roundtrip, found 4 hours ago
$279
Roundtrip
found 4 hours ago
Select Delta flight, departing Wed, Apr 1 from Sioux Falls to Washington, returning Sun, Apr 19, priced at $279 found 4 hours ago
United
Fri, Feb 20 - Mon, Feb 23
FSD
Sioux Falls
IAD
Washington
$283 Roundtrip, found 9 hours ago
$283
Roundtrip
found 9 hours ago
Select United flight, departing Fri, Feb 20 from Sioux Falls to Washington, returning Mon, Feb 23, priced at $283 found 9 hours ago
United
Thu, Dec 11 - Mon, Dec 15
FSD
Sioux Falls
IAD
Washington
$284 Roundtrip, found 3 days ago
$284
Roundtrip
found 3 days ago
Select United flight, departing Thu, Dec 11 from Sioux Falls to Washington, returning Mon, Dec 15, priced at $284 found 3 days ago
Delta
Sun, Feb 15 - Tue, Mar 3
FSD
Sioux Falls
IAD
Washington
$284 Roundtrip, found 4 hours ago
$284
Roundtrip
found 4 hours ago
Select Delta flight, departing Sun, Feb 15 from Sioux Falls to Washington, returning Tue, Mar 3, priced at $284 found 4 hours ago
United
Fri, Dec 12 - Mon, Dec 15
FSD
Sioux Falls
IAD
Washington
$288 Roundtrip, found 1 day ago
$288
Roundtrip
found 1 day ago
Select United flight, departing Fri, Dec 12 from Sioux Falls to Washington, returning Mon, Dec 15, priced at $288 found 1 day ago
United
Fri, Dec 5 - Sun, Dec 7
FSD
Sioux Falls
IAD
Washington
$289 Roundtrip, found 5 days ago
$289
Roundtrip
found 5 days ago
Select United flight, departing Fri, Dec 5 from Sioux Falls to Washington, returning Sun, Dec 7, priced at $289 found 5 days ago
American Airlines
Wed, Dec 10 - Sun, Dec 14
FSD
Sioux Falls
IAD
Washington
$316 Roundtrip, found 14 hours ago
$316
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Wed, Dec 10 from Sioux Falls to Washington, returning Sun, Dec 14, priced at $316 found 14 hours ago

Find the cheapest month to fly from Sioux Falls (FSD) to Washington (IAD)

February is typically the cheapest month to fly

From $207 - $798 per traveler.

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $309
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $309

Frequently asked questions

How much does a flight from Sioux Falls Regional Airport (FSD) to Washington Dulles Intl. Airport (IAD) cost?
Grab a cheap one-way flight from $219 or cheap return flight from $259 from Sioux Falls Regional Airport (FSD) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Sioux Falls Regional Airport (FSD) to Washington Dulles Intl. Airport (IAD)?
Planning your trip for March is a great way to save, as it's the cheapest month for flights between FSD and IAD. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Sioux Falls Regional Airport (FSD) to Washington Dulles Intl. Airport (IAD)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from FSD to IAD. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Sioux Falls Regional Airport (FSD) to Washington Dulles Intl. Airport (IAD)?
Nonstop flights from Sioux Falls Regional Airport (FSD) to Washington Dulles Intl. Airport (IAD) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from FSD to IAD?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sioux Falls Regional Airport (FSD) to Washington Dulles Intl. Airport (IAD)?
Book a flight from Sioux Falls Regional Airport (FSD) to Washington Dulles Intl. Airport (IAD) that takes off before 3 PM to reduce the risk of cancellations. Later departures have a 22% higher chance of being canceled, on average.**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.
Is it cheaper to buy a plane ticket from Sioux Falls Regional Airport (FSD) to Washington Dulles Intl. Airport (IAD) last-minute?
Waiting until just before your departure to book a ticket from FSD to IAD generally means paying more. While you may find some last-minute offers, they aren't always guaranteed. Be flexible with your itinerary for a better chance of snagging a bargain.
Is it cheaper to book a FSD to IAD flight and hotel package?
Securing a FSD to IAD flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our impressive range of accommodations and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Sioux Falls Regional Airport (FSD) to Washington Dulles Intl. Airport (IAD)?
If you reserved your FSD to IAD flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

Travel information

Origin airport
Sioux Falls Regional
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$258
Distance
1048 mi

Book with confidence

Sioux Falls to Washington Flights

The cheapest times to fly from Sioux Falls 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 Sioux Falls to Washington are during the month of March. You can find some of the cheapest flights from Sioux Falls to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sioux Falls to Washington

Sunday is one of the best days to book for cheap flights from Sioux Falls 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 Sioux Falls 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 Sioux Falls to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $219 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 Sioux Falls 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 Sioux Falls 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.

 

Sioux Falls to Washington Flights

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*Available to One Key members.