IAD - FSD

$152 Find Cheap Flights from Washington Dulles Airport to Sioux Falls

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Sioux Falls departing on 8/11. 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 Sioux Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Sioux Falls, 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 Washington, D.C. to Sioux Falls, as well as popular online travel agencies
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Cheap Flights from Dulles Intl to Sioux Falls (IAD-FSD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Sioux Falls 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 Dulles Intl to Sioux Falls

Tue, Aug 19 - Sun, Aug 31
Delta Logo
6:50 pm - 11:46 pmIAD-FSD
5h 56m1 stop
Delta Logo
5:00 am - 1:25 pmFSD-IAD
7h 25m1 stop
$259Delta
Find Deal
Wed, Aug 20 - Sat, Aug 23
Delta Logo
5:25 pm - 11:06 pmIAD-FSD
6h 41m1 stop
Delta Logo
5:27 am - 5:34 pmFSD-IAD
11h 07m2 stops
$264Delta
Find Deal
Wed, Aug 20 - Sat, Aug 23
Delta Logo
1:00 pm - 11:06 pmIAD-FSD
11h 06m2 stops
Delta Logo
5:27 am - 5:34 pmFSD-IAD
11h 07m2 stops
$269Delta
Find Deal
Wed, Aug 13 - Wed, Aug 20
Delta Logo
6:50 pm - 11:44 pmIAD-FSD
5h 54m1 stop
Delta Logo
5:27 am - 2:31 pmFSD-IAD
8h 04m1 stop
$274Delta
Find Deal
Wed, Aug 13 - Wed, Aug 20
Delta Logo
6:50 pm - 11:44 pmIAD-FSD
5h 54m1 stop
Delta Logo
5:00 am - 4:31 pmFSD-IAD
10h 31m2 stops
$279Delta
Find Deal
Wed, Aug 13 - Sun, Aug 17
United Airlines Logo
3:39 pm - 10:00 pmIAD-FSD
7h 21m1 stop
United Airlines Logo
6:26 pm - 12:30 amFSD-IAD
5h 04m1 stop
$314United Airlines
Find Deal
Fri, Aug 15 - Sun, Aug 24
United Airlines Logo
5:13 pm - 10:56 pmIAD-FSD
6h 43m1 stop
United Airlines Logo
6:11 pm - 12:32 amFSD-IAD
5h 21m1 stop
$325United Airlines
Find Deal
Fri, Aug 22 - Sat, Aug 23
United Airlines Logo
5:10 pm - 10:12 pmIAD-FSD
6h 02m1 stop
United Airlines Logo
8:00 am - 1:49 pmFSD-IAD
4h 49m1 stop
$339United Airlines
Find Deal
Sat, Aug 23 - Wed, Aug 27
American Airlines Logo
9:14 am - 9:03 pmIAD-FSD
12h 49m2 stops
American Airlines Logo
7:01 am - 6:52 pmFSD-IAD
10h 51m2 stops
$406American Airlines
Find Deal
Thu, Oct 2 - Sat, Oct 4
American Airlines Logo
6:25 am - 12:39 pmIAD-FSD
7h 14m1 stop
American Airlines Logo
1:19 pm - 10:48 pmFSD-IAD
8h 29m1 stop
$407American Airlines
Find Deal
Booking Insights

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

Get data-powered insights and trends into flights from Dulles Intl to Sioux Falls 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 Washington Dulles Airport to Sioux Falls?

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

If your flying dates are flexible, you should consider flying to Sioux Falls on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Washington Dulles Airport to Sioux Falls. For your return ticket, we recommend flying on a Friday and avoiding Mondays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Sioux Falls, 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 Washington, D.C. Dulles Intl Airport to Sioux Falls is September, where tickets cost $248 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is $808 and $665 respectively.

Good to know

Low seasonJanuary
Cheapest flight$152
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Washington Dulles Airport to Sioux Falls

When to book flights from Dulles Intl to Sioux Falls

Are your dates flexible? Find out the best times to travel from Dulles Intl to Sioux Falls 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 Washington Dulles Airport to Sioux Falls flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Sioux Falls was $152 for a one-way ticket and $259 for a round-trip.

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

    A passport is not required to fly from Washington Dulles Airport to Sioux Falls.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Sioux Falls are Delta and United Airlines. With an average price for the route of $438 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $558 and an overall rating of 7.4.

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

    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 Washington Dulles Airport to Sioux Falls.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sioux Falls from Washington Dulles Airport 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 Washington Dulles Airport to Sioux Falls?

    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 Sioux Falls with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and FSD 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 Washington Dulles Airport to Sioux Falls?

    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 Sioux Falls from Washington Dulles Airport 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 Dulles Intl to Sioux Falls

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Sioux Falls. 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 Dulles Intl to Sioux Falls? 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.
8.0
DeltaOverall score based on 7980 reviews
7.3Food
8.5Crew
8.2Boarding
7.9Entertainment
7.9Comfort
Airline reviews

Delayed and took off even later than the scheduled delay time

8.0 ExcellentAnonymous, Jul 2025DTW - SEA
Read more Delta reviews

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Did not know my son and I had different seating arrangements. He was fine, but it was disappointing.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

Food was surprisingly good but the WiFi was not great

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

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

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