In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

The best pricing can be found in the month of October. Prices to Washington, D.C. Dulles Intl Airport from South Dakota average $403. You can even find prices in October for less than $403, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $135. The month of February appears to be one of the more expensive times to travel to Washington, D.C. Dulles Intl Airport from South Dakota. Flying in the targeted month can save you up to 69%.

What is the cheapest time of day to fly from SD to IAD?

When flying from South Dakota to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from South Dakota to Dulles Intl that include hotel bookings?

Yes. In addition to deals on South Dakota to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from South Dakota to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from South Dakota to Dulles Intl.

Can I find deals for business class flights from South Dakota to Dulles Intl?

Yes. Cheapflights offers flight deals from South Dakota to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$187+ Cheap Flights from South Dakota to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from South Dakota to Dulles Intl

Round-trip from	$258 (American Airlines)
One-way from	$187 (United Airlines)
Popular in	February
Cheapest in	October
Average price	$377

From South Dakota to Washington, D.C. Dulles Intl

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One-way flight from South Dakota to Washington, D.C. Dulles Intl

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Highest demand for flights based on searches. 25% potential increase in price ($139 potential increase over avg. RT price).

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Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find flight deals from South Dakota to Dulles Intl

Cheapest flights from South Dakota to Dulles Intl
Explore the most affordable flight options available from South Dakota to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Tue 9/307:00 amFSD - IAD

1 stop8h 50mAmerican Airlines

Tue 10/76:11 amIAD - FSD

1 stop7h 34mAmerican Airlines

Deal found 8/16

$258

Sat 9/278:00 amFSD - IAD

1 stop4h 51mUnited Airlines

Tue 9/305:15 pmIAD - FSD

1 stop6h 07mUnited Airlines

Deal found 8/16

$259

Sat 9/277:00 amFSD - IAD

2 stops10h 47mAmerican Airlines

Tue 9/306:25 amIAD - FSD

1 stop7h 13mAmerican Airlines

Deal found 8/17

$264

Tue 9/305:00 amFSD - IAD

2 stops8h 33mDelta

Tue 10/76:05 amIAD - FSD

2 stops7h 50mDelta

Deal found 8/16

$269

Tue 11/45:20 amFSD - IAD

1 stop7h 17mDelta

Sun 11/96:15 amIAD - FSD

1 stop7h 16mDelta

Deal found 8/16

$279

Sat 9/278:00 amFSD - IAD

1 stop4h 51mUnited Airlines

Mon 9/295:15 pmIAD - FSD

1 stop6h 07mUnited Airlines

Deal found 8/16

$281

Sat 8/3012:56 pmFSD - IAD

2 stops9h 30mDelta

Wed 9/36:15 amIAD - FSD

1 stop5h 04mDelta

Deal found 8/16

$294

Fri 9/266:10 pmFSD - IAD

1 stop5h 11mUnited Airlines

Mon 9/295:15 pmIAD - FSD

1 stop6h 07mUnited Airlines

Deal found 8/16

$304

Wed 9/175:00 amFSD - IAD

1 stop5h 18mDelta

Sat 9/205:25 pmIAD - FSD

1 stop6h 37mDelta

Deal found 8/16

$316

Thu 9/41:19 pmFSD - IAD

1 stop8h 22mAmerican Airlines

Mon 9/86:25 amIAD - FSD

1 stop7h 13mAmerican Airlines

Deal found 8/15

$319

Wed 9/245:30 amRAP - IAD

1 stop5h 56mUnited Airlines

Sun 9/286:30 amIAD - RAP

1 stop5h 43mUnited Airlines

Deal found 8/17

$349

Wed 9/242:27 pmRAP - IAD

1 stop7h 11mDelta

Sun 9/286:15 amIAD - RAP

1 stop5h 57mDelta

Deal found 8/16

$375

Best flights from South Dakota to Dulles Intl
Discover carefully curated flight deals from South Dakota to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2025.

Tue 9/307:00 amFSD - IAD

1 stop8h 50mAmerican Airlines

Tue 10/76:11 amIAD - FSD

1 stop7h 34mAmerican Airlines

Deal found 8/16

$258

Tue 9/165:00 amFSD - IAD

1 stop5h 18mDelta

Sat 9/205:25 pmIAD - FSD

1 stop6h 37mDelta

Deal found 8/16

$259

Sat 9/278:00 amFSD - IAD

1 stop4h 51mUnited Airlines

Tue 9/305:15 pmIAD - FSD

1 stop6h 07mUnited Airlines

Deal found 8/16

$259

Tue 11/41:03 pmFSD - IAD

1 stop8h 30mAmerican Airlines

Sat 11/86:04 amIAD - FSD

1 stop7h 17mAmerican Airlines

Deal found 8/15

$259

Tue 9/305:00 amFSD - IAD

1 stop5h 18mDelta

Tue 10/76:05 amIAD - FSD

2 stops7h 50mDelta

Deal found 8/16

$264

Sat 9/277:00 amFSD - IAD

1 stop8h 47mAmerican Airlines

Tue 9/3011:47 amIAD - FSD

1 stop6h 16mAmerican Airlines

Deal found 8/14

$259

Wed 9/245:30 amRAP - IAD

1 stop8h 04mUnited Airlines

Sun 9/286:30 amIAD - RAP

1 stop5h 43mUnited Airlines

Deal found 8/16

$349

Wed 9/242:27 pmRAP - IAD

1 stop7h 11mDelta

Sun 9/286:15 amIAD - RAP

1 stop5h 57mDelta

Deal found 8/16

$375

Fri 10/242:26 pmRAP - IAD

1 stop7h 14mDelta

Mon 10/277:10 pmIAD - RAP

1 stop5h 26mDelta

Deal found 8/16

$511

Fri 10/244:57 pmRAP - IAD

2 stops28h 56mAmerican Airlines

Mon 10/278:25 pmIAD - RAP

2 stops21h 38mAmerican Airlines

Deal found 8/16

$550

Sat 9/612:35 pmRAP - IAD

1 stop8h 46mDelta

Fri 9/196:15 amIAD - RAP

1 stop5h 57mDelta

Deal found 8/17

$549

Last-minute flights from South Dakota to Dulles Intl
Discover last-minute flight deals from South Dakota to Dulles Intl. Data last updated August 18, 2025 and is based on user searches.

Sun 8/245:27 amFSD - IAD

1 stop5h 17mDelta

Wed 8/276:15 amIAD - FSD

1 stop7h 01mDelta

Deal found 8/17

$512

Wed 8/275:27 amFSD - IAD

1 stop4h 56mDelta

Wed 9/36:15 amIAD - FSD

1 stop5h 04mDelta

Deal found 8/16

$354

Wed 8/275:27 amFSD - IAD

1 stop4h 56mDelta

Sat 8/305:25 pmIAD - FSD

1 stop6h 41mDelta

Deal found 8/17

$394

Wed 8/277:01 amFSD - IAD

2 stops10h 51mAmerican Airlines

Wed 9/311:18 amIAD - FSD

2 stops11h 05mAmerican Airlines

Deal found 8/17

$407

Wed 8/277:01 amFSD - IAD

2 stops10h 51mAmerican Airlines

Sat 8/301:18 pmIAD - FSD

2 stops8h 45mAmerican Airlines

Deal found 8/17

$457

Sat 8/3012:56 pmFSD - IAD

2 stops9h 30mDelta

Wed 9/36:15 amIAD - FSD

1 stop5h 04mDelta

Deal found 8/16

$294

Thu 9/41:19 pmFSD - IAD

1 stop8h 22mAmerican Airlines

Mon 9/86:25 amIAD - FSD

1 stop7h 13mAmerican Airlines

Deal found 8/15

$319

Thu 9/111:19 pmFSD - IAD

1 stop8h 33mAmerican Airlines

Mon 9/1511:18 amIAD - FSD

2 stops11h 05mAmerican Airlines

Deal found 8/18

$324

Tue 9/165:00 amFSD - IAD

1 stop5h 18mDelta

Sat 9/201:00 pmIAD - FSD

2 stops11h 02mDelta

Deal found 8/16

$321

Wed 9/175:00 amFSD - IAD

1 stop5h 18mDelta

Sat 9/205:25 pmIAD - FSD

1 stop6h 37mDelta

Deal found 8/16

$316

Wed 9/245:30 amRAP - IAD

1 stop5h 56mUnited Airlines

Sun 9/286:30 amIAD - RAP

1 stop5h 43mUnited Airlines

Deal found 8/17

$349

Fri 9/266:10 pmFSD - IAD

1 stop5h 11mUnited Airlines

Mon 9/295:15 pmIAD - FSD

1 stop6h 07mUnited Airlines

Deal found 8/16

$304

One-way flights from South Dakota to Dulles Intl
Search for one-way flight options from South Dakota to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 18, 2025.

Tue 9/168:00 amFSD - IAD

1 stop4h 49mUnited Airlines

Deal found 8/16

$187

Fri 10/107:28 pmFSD - IAD

2 stops15h 31mFrontier

Deal found 8/16

$189

Tue 9/165:00 amFSD - IAD

2 stops8h 33mDelta

Deal found 8/16

$192

Mon 10/139:32 pmFSD - IAD

3 stops21h 14mMultiple Airlines

Deal found 8/17

$203

Thu 9/112:27 pmRAP - IAD

1 stop7h 11mDelta

Deal found 8/17

$206

Sun 9/142:54 pmFSD - IAD

2 stops17h 23mFrontier

Deal found 8/17

$215

Wed 9/175:00 amFSD - IAD

2 stops10h 07mDelta

Deal found 8/16

$235

Fri 1/231:20 pmFSD - IAD

2 stops9h 47mDelta

Deal found 8/17

$240

Sun 9/145:39 pmRAP - IAD

3 stops48h 16mMultiple Airlines

Deal found 8/17

$246

Sun 10/1211:41 amFSD - IAD

3 stops35h 30mMultiple Airlines

Deal found 8/17

$250

Fri 8/296:25 amRAP - IAD

1 stop5h 00mDelta

Deal found 8/15

$260

Tue 10/215:32 amRAP - IAD

2 stops11h 22mAmerican Airlines

Deal found 8/17

$261

Cheapflights Fare Finder

Use the filters below to find and compare flights from South Dakota to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Sioux FallsWashington, D.C.

FSD - IAD

FSDIAD

Sioux Falls Joe Foss Field

Tue 9/30

7:00 am-4:50 pm

1 stop8h 50m

Washington, D.C. Dulles Intl

Tue 10/7

6:11 am-12:45 pm

1 stop7h 34m

$258

Sioux FallsWashington, D.C.

FSD - IAD

FSDIAD

Sioux Falls Joe Foss Field

Tue 9/16

5:00 am-11:18 am

1 stop5h 18m

Washington, D.C. Dulles Intl

Sat 9/20

5:25 pm-11:02 pm

1 stop6h 37m

$259

Sioux FallsWashington, D.C.

FSD - IAD

FSDIAD

Sioux Falls Joe Foss Field

Sat 9/27

8:00 am-1:51 pm

1 stop4h 51m

Washington, D.C. Dulles Intl

Tue 9/30

5:15 pm-10:22 pm

1 stop6h 07m

$259

Sioux FallsWashington, D.C.

FSD - IAD

FSDIAD

Sioux Falls Joe Foss Field

Tue 11/4

1:03 pm-10:33 pm

1 stop8h 30m

Washington, D.C. Dulles Intl

Sat 11/8

6:04 am-12:21 pm

1 stop7h 17m

$259

Sioux FallsWashington, D.C.

FSD - IAD

FSDIAD

Sioux Falls Joe Foss Field

Sat 9/27

7:00 am-4:47 pm

1 stop8h 47m

Washington, D.C. Dulles Intl

Tue 9/30

11:47 am-5:03 pm

1 stop6h 16m

$259

Sioux FallsWashington, D.C.

FSD - IAD

FSDIAD

Sioux Falls Joe Foss Field

Tue 9/30

5:00 am-11:18 am

1 stop5h 18m

Washington, D.C. Dulles Intl

Tue 10/7

6:05 am-12:55 pm

2 stops7h 50m

$264

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Wed 9/24

5:30 am-3:34 pm

1 stop8h 04m

Washington, D.C. Dulles Intl

Sun 9/28

6:30 am-10:13 am

1 stop5h 43m

$349

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Wed 9/24

2:27 pm-11:38 pm

1 stop7h 11m

Washington, D.C. Dulles Intl

Sun 9/28

6:15 am-10:12 am

1 stop5h 57m

$375

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Fri 10/24

2:26 pm-11:40 pm

1 stop7h 14m

Washington, D.C. Dulles Intl

Mon 10/27

7:10 pm-10:36 pm

1 stop5h 26m

$511

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Sat 9/6

12:35 pm-11:21 pm

1 stop8h 46m

Washington, D.C. Dulles Intl

Fri 9/19

6:15 am-10:12 am

1 stop5h 57m

$549

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 31 results

Best time to book a flight from South Dakota to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from South Dakota with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from South Dakota to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from South Dakota to Washington, D.C. Dulles Intl Airport?

Currently, July is the cheapest month in which you can book a flight from South Dakota to Washington, D.C. Dulles Intl Airport (average of $302). Flying from South Dakota to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

What are the cheapest airlines to fly from South Dakota to Washington, D.C. Dulles Intl Airport one-way?
The cheapest airlines for a one-way flight from South Dakota to Washington, D.C. Dulles Intl Airport are United Airlines ($187), Frontier ($189), and Delta ($192).
Can I find deals for flights from South Dakota to Dulles Intl that include hotel bookings?
Yes. In addition to deals on South Dakota to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from South Dakota to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from South Dakota to Dulles Intl.
Can I find deals for business class flights from South Dakota to Dulles Intl?
Yes. Cheapflights offers flight deals from South Dakota to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from South Dakota to Washington, D.C. Dulles Intl Airport?
Currently, July is the cheapest month in which you can book a flight from South Dakota to Washington, D.C. Dulles Intl Airport (average of $302). Flying from South Dakota to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Woodbridge

Arlington

Alexandria

Tysons

Silver Spring

Springfield

Fredericksburg

Gaithersburg

Towson

Linthicum Heights

Fairfax

Manassas

Falls Church

Laurel

Rockville

Oxon Hill

National Harbor

Dundalk

Waldorf

Bowie

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from South Dakota to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$233	Average$358	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$288	Average$532	FlexibilityNo cancel fee	On-time69%

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$187+ Cheap flights from South Dakota to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from South Dakota to Dulles Intl

Keep the following information in mind while searching for South Dakota to Dulles Intl flight deals. Data was last updated August 18, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from South Dakota to Dulles Intl

Cheapest flights from South Dakota to Dulles IntlExplore the most affordable flight options available from South Dakota to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Explore the most affordable flight options available from South Dakota to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from South Dakota to Washington, D.C. Dulles Intl Airport that are best for you.

Best time to book a flight from South Dakota to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from South Dakota with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from South Dakota to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from South Dakota to Washington, D.C. Dulles Intl Airport?

Related info for your journey

Find useful and relevant information for your journey from South Dakota to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines to fly from South Dakota to Washington, D.C. Dulles Intl Airport one-way?

Can I find deals for flights from South Dakota to Dulles Intl that include hotel bookings?

How can I find direct flights from South Dakota to Dulles Intl?

Can I find deals for business class flights from South Dakota to Dulles Intl?

What is the cheapest month to book a flight from South Dakota to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for South Dakota to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from South Dakota to Dulles Intl

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Cheapest flights from South Dakota to Dulles Intl
Explore the most affordable flight options available from South Dakota to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.