IAD - FSD

$245 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 10/19. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

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

Sat, Oct 25 - Tue, Oct 28
American Airlines Logo
6:11 am - 12:42 pmIAD-FSD
7h 31m1 stop
American Airlines Logo
1:33 pm - 10:51 pmFSD-IAD
8h 18m1 stop
$259American Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5
American Airlines Logo
6:11 am - 12:45 pmIAD-FSD
7h 34m1 stop
American Airlines Logo
1:08 pm - 10:33 pmFSD-IAD
8h 25m1 stop
$260American Airlines
Find Deal
Sun, Oct 5 - Fri, Oct 10
Frontier Logo
10:09 pm - 2:09 pmIAD-FSD
17h 00m2 stops
Frontier Logo
7:28 pm - 11:59 amFSD-IAD
15h 31m2 stops
$261Frontier
Find Deal
Sat, Feb 21 - Tue, Feb 24
Delta Logo
6:10 am - 12:35 pmIAD-FSD
7h 25m2 stops
Delta Logo
5:15 am - 1:55 pmFSD-IAD
7h 40m1 stop
$264Delta
Find Deal
Sat, Feb 21 - Tue, Feb 24
Delta Logo
6:10 am - 12:35 pmIAD-FSD
7h 25m2 stops
Delta Logo
5:15 am - 4:30 pmFSD-IAD
10h 15m2 stops
$269Delta
Find Deal
Tue, Sep 30 - Sat, Oct 4
American Airlines Logo
6:25 am - 12:38 pmIAD-FSD
7h 13m1 stop
American Airlines Logo
1:19 pm - 10:48 pmFSD-IAD
8h 29m1 stop
$289American Airlines
Find Deal
Sun, Nov 2 - Fri, Nov 7
Multiple Airlines Logo
10:54 pm - 9:18 amIAD-FSD
11h 24m1 stop
Multiple Airlines Logo
2:32 pm - 11:55 pmFSD-IAD
32h 23m2 stops
$310Multiple Airlines
Find Deal
Thu, Oct 2 - Sat, Oct 4
United Airlines Logo
5:15 pm - 10:22 pmIAD-FSD
6h 07m1 stop
United Airlines Logo
8:00 am - 1:51 pmFSD-IAD
4h 51m1 stop
$369United Airlines
Find Deal
Thu, Oct 30 - Sun, Nov 2
Multiple Airlines Logo
9:52 pm - 9:18 amIAD-FSD
12h 26m1 stop
Multiple Airlines Logo
9:17 am - 12:11 amFSD-IAD
13h 54m2 stops
$386Multiple Airlines
Find Deal
Fri, Oct 24 - Mon, Oct 27
United Airlines Logo
5:15 pm - 10:22 pmIAD-FSD
6h 07m1 stop
United Airlines Logo
6:23 pm - 11:59 pmFSD-IAD
4h 36m1 stop
$413United Airlines
Find Deal

Everything you should know

Top airlines
American 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
September
Cheapest • 34% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$259
Typical prices: $380-531
American Airlines
Sat 10/25Tue 10/28
IAD - FSD • 1 stop
Cheapest one-way
$245
Multiple Airlines
Sun 10/19
IAD - FSD • 2 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Sioux Falls!
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.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Sioux Falls?

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 $303 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $808 and $580 respectively.

Good to know

Low seasonJanuary
Cheapest flight$245
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly and prices are also 6% 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 $245 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 $441 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 $503 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.
7.9
DeltaOverall score based on 7954 reviews
8.2Boarding
8.5Crew
7.9Entertainment
7.3Food
7.9Comfort
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..,

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

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

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.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.