FSD - IAD

$183 Find Cheap Flights from Sioux Falls to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sioux Falls to Dulles Intl departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux Falls to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux Falls to Washington, D.C., as well as popular online travel agencies
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Flight Deals

Cheap Flights from Sioux Falls to Dulles Intl (FSD-IAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sioux Falls to Dulles Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sioux Falls to Dulles Intl

Tue, Oct 14 - Tue, Oct 21
United Airlines Logo
6:10 pm - 12:21 amFSD-IAD
5h 11m1 stop
United Airlines Logo
5:15 pm - 10:22 pmIAD-FSD
6h 07m1 stop
$259United Airlines
Find Deal
Fri, Oct 31 - Tue, Nov 4
Delta Logo
1:35 pm - 11:18 pmFSD-IAD
8h 43m2 stops
Delta Logo
6:18 am - 10:13 amIAD-FSD
4h 55m1 stop
$264Delta
Find Deal
Sat, Mar 14 - Wed, Mar 18
United Airlines Logo
6:20 pm - 11:57 pmFSD-IAD
4h 37m1 stop
United Airlines Logo
5:15 pm - 9:47 pmIAD-FSD
5h 32m1 stop
$278United Airlines
Find Deal
Sat, Nov 8 - Wed, Nov 12
United Airlines Logo
8:00 am - 3:55 pmFSD-IAD
6h 55m1 stop
United Airlines Logo
5:15 pm - 9:46 pmIAD-FSD
5h 31m1 stop
$295United Airlines
Find Deal
Sun, Oct 5 - Sat, Oct 11
Multiple Airlines Logo
2:54 pm - 3:39 pmFSD-IAD
23h 45m2 stops
Multiple Airlines Logo
9:38 pm - 8:27 amIAD-FSD
11h 49m1 stop
$314Multiple Airlines
Find Deal
Fri, Oct 31 - Tue, Nov 4
American Airlines Logo
7:00 am - 5:04 pmFSD-IAD
9h 04m1 stop
American Airlines Logo
6:04 am - 12:21 pmIAD-FSD
7h 17m1 stop
$324American Airlines
Find Deal
Sat, Sep 27 - Tue, Sep 30
Delta Logo
5:30 am - 1:53 pmFSD-IAD
7h 23m1 stop
Delta Logo
6:15 am - 12:11 pmIAD-FSD
6h 56m1 stop
$329Delta
Find Deal
Sat, Sep 27 - Tue, Sep 30
Delta Logo
5:30 am - 1:53 pmFSD-IAD
7h 23m1 stop
Delta Logo
1:00 pm - 11:02 pmIAD-FSD
11h 02m2 stops
$334Delta
Find Deal
Tue, Mar 3 - Sat, Mar 7
United Airlines Logo
7:45 am - 4:03 pmFSD-IAD
7h 18m1 stop
United Airlines Logo
5:15 pm - 9:47 pmIAD-FSD
5h 32m1 stop
$339United Airlines
Find Deal
Wed, Nov 5 - Sun, Nov 9
American Airlines Logo
1:08 pm - 10:33 pmFSD-IAD
8h 25m1 stop
American Airlines Logo
6:04 am - 12:23 pmIAD-FSD
7h 19m1 stop
$407American Airlines
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $259 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 37% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$259
Overall average: $378
United Airlines
Tue 10/14Tue 10/21
FSD - IAD • 1 stop
Cheapest one-way
$183
Multiple Airlines
Fri 10/17
FSD - IAD • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Dulles Intl!
Booking Insights

KAYAK's insights & trends for Sioux Falls to Dulles Intl flights

Get data-powered insights and trends into flights from Sioux Falls to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Sioux Falls to Washington Dulles Airport?

The average price of all round-trip flights from Sioux Falls to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Washington Dulles Airport on a Friday and more expensive on a Monday. On your return trip to Sioux Falls, you should consider flying back on a Saturday, and avoid Mondays for better deals.

What is the cheapest month to fly from Sioux Falls to Washington, D.C. Dulles Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sioux Falls to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sioux Falls to Washington, D.C. Dulles Intl Airport is November, where tickets cost $298 (return) on average. On the other hand, the most expensive months are February and April, where the average cost of round-trip tickets is $758 and $673 respectively.

Good to know

Low seasonJanuary
Cheapest flight$183
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Sioux Falls to Washington Dulles Airport

When to book flights from Sioux Falls to Dulles Intl

Are your dates flexible? Find out the best times to travel from Sioux Falls to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Sioux Falls to Washington Dulles Airport flights

  • What is the cheapest flight from Sioux Falls to Washington, D.C. Dulles Intl Airport?

    In the last 3 days, the lowest price for a flight from Sioux Falls to Washington, D.C. Dulles Intl Airport was $183 for a one-way ticket and $259 for a round-trip.

  • Do I need a passport to fly between Sioux Falls and Washington Dulles Airport?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Sioux Falls to Washington Dulles Airport?

    On your way to Washington Dulles Airport, you’ll fly out from Sioux Falls Joe Foss Field. You’ll be landing at Washington, D.C. Dulles Intl.

  • Which aircraft models fly most regularly from Sioux Falls to Washington Dulles Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Sioux Falls to Washington Dulles Airport?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Sioux Falls and Washington Dulles Airport, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Sioux Falls to Washington, D.C., Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Sioux Falls to Washington, D.C. are Delta and United Airlines. With an average price for the route of $378 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $498 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Sioux Falls to Washington Dulles Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sioux Falls to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sioux Falls to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Sioux Falls is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sioux Falls to Washington Dulles Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to Sioux Falls with another airline. Booking your flights between Sioux Falls and IAD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sioux Falls to Washington Dulles Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Sioux Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Sioux Falls to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Sioux Falls to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sioux Falls to Dulles Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 7954 reviews
7.3Food
7.9Comfort
7.9Entertainment
8.2Boarding
8.5Crew
Airline reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

10.0 ExcellentAnonymous, Sep 2025CLT - BOS
Read more Delta reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

United airlines, mediocre at best. No issues , nothing great . Worked for me

Turbulent taking off & landing to Dulles from Raleigh. Flight from Dulles to Tokyo very good!!

Everything you need to know for your flight from Sioux Falls to Dulles Intl

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