How long is the flight from Santa Rosa to Washington, D.C. Dulles Intl Airport?

A quick flight from Santa Rosa to Washington, D.C. Dulles Intl Airport can take about 30h 36m. Alaska Airlines provides one of the quickest options available for as low as $370. Santa Rosa and Washington, D.C. Dulles Intl Airport are separated by a distance of 2418 mi.

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 time of day to fly from STS to IAD?

When flying from Santa Rosa 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.

Most accurate provider : When it comes to deals on Santa Rosa-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Santa Rosa-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Santa Rosa-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Santa Rosa-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Santa Rosa-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from Santa Rosa to Washington, D.C. Dulles Intl?

Most people fly from Santa Rosa Sonoma County (STS) if they book a flight from Santa Rosa to Washington, D.C. Dulles Intl. On average, Sonoma County has 0 outbound flights to Washington, D.C. Dulles Intl per day from 0 airlines. Santa Rosa Sonoma County is conveniently located just 7.2 mi from Santa Rosa’s city center.

Can I find deals for flights from Santa Rosa to Dulles Intl that include hotel bookings?

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

How can I find direct flights from Santa Rosa to Dulles Intl?

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

Can I find deals for business class flights from Santa Rosa to Dulles Intl?

Yes. Cheapflights offers flight deals from Santa Rosa 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.

$183+ Flights from Santa Rosa to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Santa Rosa to Dulles Intl

Cheapest flights from Santa Rosa to Dulles Intl
Explore the most affordable flight options available from Santa Rosa to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Thu 12/256:45 amSTS - IAD

1 stop7h 36mAlaska Airlines

Mon 12/296:29 pmIAD - STS

1 stop8h 30mAlaska Airlines

Deal found 12/10

$937

Tue 12/166:43 pmSTS - IAD

1 stop19h 47mAlaska Airlines

Sat 12/206:29 pmIAD - STS

1 stop8h 30mAlaska Airlines

Deal found 12/9

$1,106

Fri 12/266:00 amSTS - IAD

1 stop21h 13mAlaska Airlines

Tue 12/306:29 pmIAD - STS

1 stop19h 54mAlaska Airlines

Deal found 12/11

$1,257

Thu 12/256:45 amSTS - IAD

2 stops12h 48mAmerican Airlines

Mon 12/296:35 amIAD - STS

2 stops12h 16mAmerican Airlines

Deal found 12/10

$1,663

Best flights from Santa Rosa to Dulles Intl
Discover carefully curated flight deals from Santa Rosa to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Tue 1/206:50 amSTS - IAD

2 stops30h 36mAlaska Airlines

Fri 1/236:04 pmIAD - STS

1 stop8h 55mAlaska Airlines

Deal found 12/11

$370

Mon 3/97:57 pmSTS - IAD

1 stop18h 23mAlaska Airlines

Wed 3/117:05 amIAD - STS

1 stop17h 47mAlaska Airlines

Deal found 12/10

$384

Sun 1/48:17 pmSTS - IAD

2 stops30h 56mAlaska Airlines

Wed 1/146:04 pmIAD - STS

1 stop19h 31mAlaska Airlines

Deal found 12/10

$478

Wed 4/157:00 amSTS - IAD

2 stops19h 49mAlaska Airlines

Tue 4/215:37 pmIAD - STS

1 stop8h 21mAlaska Airlines

Deal found 12/10

$493

Wed 4/151:22 pmSTS - IAD

2 stops13h 27mAlaska Airlines

Wed 4/2210:00 amIAD - STS

2 stops16h 41mAlaska Airlines

Deal found 12/10

$493

Wed 4/151:22 pmSTS - IAD

2 stops13h 27mAlaska Airlines

Sat 4/255:37 pmIAD - STS

1 stop8h 21mAlaska Airlines

Deal found 12/10

$493

Wed 4/157:00 amSTS - IAD

2 stops19h 49mAlaska Airlines

Mon 4/205:37 pmIAD - STS

1 stop8h 21mAlaska Airlines

Deal found 12/10

$493

Wed 4/157:00 amSTS - IAD

2 stops19h 49mAlaska Airlines

Thu 4/235:37 pmIAD - STS

1 stop8h 21mAlaska Airlines

Deal found 12/10

$496

Tue 4/143:04 pmSTS - IAD

1 stop23h 19mAlaska Airlines

Wed 4/2210:00 amIAD - STS

2 stops16h 41mAlaska Airlines

Deal found 12/10

$518

Last-minute flights from Santa Rosa to Dulles Intl
Discover last-minute flight deals from Santa Rosa to Dulles Intl. Data last updated December 12, 2025 and is based on user searches.

Thu 1/16:00 amSTS - IAD

1 stop8h 43mAlaska Airlines

Mon 1/56:29 pmIAD - STS

1 stop8h 30mAlaska Airlines

Deal found 12/10

$576

Thu 1/16:00 amSTS - IAD

1 stop8h 43mAlaska Airlines

Sun 1/46:29 pmIAD - STS

1 stop8h 30mAlaska Airlines

Deal found 12/10

$688

Sun 1/48:17 pmSTS - IAD

2 stops30h 56mAlaska Airlines

Wed 1/146:04 pmIAD - STS

1 stop19h 31mAlaska Airlines

Deal found 12/10

$478

Sat 1/1011:15 amSTS - IAD

1 stop26h 11mAlaska Airlines

Tue 1/136:04 pmIAD - STS

1 stop19h 31mAlaska Airlines

Deal found 12/9

$529

Tue 1/206:50 amSTS - IAD

2 stops30h 36mAlaska Airlines

Fri 1/236:04 pmIAD - STS

1 stop8h 55mAlaska Airlines

Deal found 12/11

$370

Tue 1/2011:15 amSTS - IAD

2 stops44h 04mMultiple Airlines

Fri 1/236:04 pmIAD - STS

1 stop8h 55mMultiple Airlines

Deal found 12/11

$597

One-way flights from Santa Rosa to Dulles Intl
Search for one-way flight options from Santa Rosa to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Fri 2/276:50 pmSTS - IAD

2 stops19h 30mAlaska Airlines

Deal found 12/10

$183

Thu 1/156:52 pmSTS - IAD

1 stop19h 12mAlaska Airlines

Deal found 12/11

$213

Tue 1/202:30 pmSTS - IAD

1 stop23h 34mAlaska Airlines

Deal found 12/11

$251

Tue 1/206:50 amSTS - IAD

3 stops48h 29mMultiple Airlines

Deal found 12/11

$297

Thu 1/16:45 amSTS - IAD

1 stop7h 36mAlaska Airlines

Deal found 12/10

$392

Sun 1/47:42 pmSTS - IAD

1 stop18h 39mAlaska Airlines

Deal found 12/10

$432

Sun 12/216:45 amSTS - IAD

1 stop7h 36mAlaska Airlines

Deal found 12/10

$470

Wed 12/242:24 pmSTS - IAD

1 stop24h 45mAlaska Airlines

Deal found 12/10

$492

Fri 1/26:00 amSTS - IAD

1 stop8h 43mAlaska Airlines

Deal found 12/10

$521

Find flight deals from Santa Rosa to Dulles Intl

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$370 (Alaska Airlines)
One-way from	$183 (Alaska Airlines)
Popular in	December
Cheapest in	February
Average price	$533

Provider with most accurate pricing for Santa Rosa Sonoma County-Washington, D.C. Dulles Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Santa Rosa Sonoma County-Washington, D.C. Dulles Intl flights.

Search Deals

From Santa Rosa Sonoma County to Washington, D.C. Dulles Intl

Search Deals

One-way flight from Santa Rosa Sonoma County to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($35 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Tue 1/20

6:50 am-4:26 pm

2 stops30h 36m

Washington, D.C. Dulles Intl

Fri 1/23

6:04 pm-11:59 pm

1 stop8h 55m

$370

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Mon 3/9

7:57 pm-5:20 pm

1 stop18h 23m

Washington, D.C. Dulles Intl

Wed 3/11

7:05 am-9:52 pm

1 stop17h 47m

$384

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Sun 1/4

8:17 pm-6:13 am

2 stops30h 56m

Washington, D.C. Dulles Intl

Wed 1/14

6:04 pm-10:35 am

1 stop19h 31m

$478

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Wed 4/15

7:00 am-5:49 am

2 stops19h 49m

Washington, D.C. Dulles Intl

Tue 4/21

5:37 pm-10:58 pm

1 stop8h 21m

$493

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Wed 4/15

1:22 pm-5:49 am

2 stops13h 27m

Washington, D.C. Dulles Intl

Wed 4/22

10:00 am-11:41 pm

2 stops16h 41m

$493

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Wed 4/15

1:22 pm-5:49 am

2 stops13h 27m

Washington, D.C. Dulles Intl

Sat 4/25

5:37 pm-10:58 pm

1 stop8h 21m

$493

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Wed 4/15

7:00 am-5:49 am

2 stops19h 49m

Washington, D.C. Dulles Intl

Mon 4/20

5:37 pm-10:58 pm

1 stop8h 21m

$493

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Wed 4/15

7:00 am-5:49 am

2 stops19h 49m

Washington, D.C. Dulles Intl

Thu 4/23

5:37 pm-10:58 pm

1 stop8h 21m

$496

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Tue 4/14

3:04 pm-5:23 pm

1 stop23h 19m

Washington, D.C. Dulles Intl

Wed 4/22

10:00 am-11:41 pm

2 stops16h 41m

$518

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Fri 2/27

6:50 pm-5:20 pm

2 stops19h 30m

$183

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 15 results

Compare providers for flights from Santa Rosa to Dulles Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Santa Rosa to Dulles Intl in December.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Santa Rosa-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Santa Rosa-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Santa Rosa-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Santa Rosa-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Santa Rosa-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Santa Rosa to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Santa Rosa 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 Santa Rosa to Washington, D.C. Dulles Intl Airport

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

Currently, May is the cheapest month in which you can book a flight from Santa Rosa to Washington, D.C. Dulles Intl Airport (average of $118). Flying from Santa Rosa to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $276). 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 airport do you fly from for flights from Santa Rosa to Washington, D.C. Dulles Intl?
Most people fly from Santa Rosa Sonoma County (STS) if they book a flight from Santa Rosa to Washington, D.C. Dulles Intl. On average, Sonoma County has 0 outbound flights to Washington, D.C. Dulles Intl per day from 0 airlines. Santa Rosa Sonoma County is conveniently located just 7.2 mi from Santa Rosa’s city center.
How long is the flight from Santa Rosa to Washington, D.C. Dulles Intl Airport?
A quick flight from Santa Rosa to Washington, D.C. Dulles Intl Airport can take about 30h 36m. Alaska Airlines provides one of the quickest options available for as low as $370. Santa Rosa and Washington, D.C. Dulles Intl Airport are separated by a distance of 2418 mi.
Can I find deals for flights from Santa Rosa to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Santa Rosa to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Santa Rosa to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santa Rosa to Dulles Intl.
Can I find deals for business class flights from Santa Rosa to Dulles Intl?
Yes. Cheapflights offers flight deals from Santa Rosa 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 Santa Rosa to Washington, D.C. Dulles Intl Airport?
Currently, May is the cheapest month in which you can book a flight from Santa Rosa to Washington, D.C. Dulles Intl Airport (average of $118). Flying from Santa Rosa to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $276). 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.

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$183+ Cheap flights from Santa Rosa (STS) 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Santa Rosa to Dulles Intl with Cheapflights

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2. Select your favorite providers

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Cheap flight deals from Santa Rosa to Dulles Intl

Cheapest flights from Santa Rosa to Dulles IntlExplore the most affordable flight options available from Santa Rosa to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Explore the most affordable flight options available from Santa Rosa to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Find flight deals from Santa Rosa to Dulles Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Compare providers for flights from Santa Rosa to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Santa Rosa to Dulles Intl in December.

Best time to book a flight from Santa Rosa to Dulles Intl

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

Cheapflights Insights

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

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

Related info for your journey

Find useful and relevant information for your journey from Santa Rosa 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 airport do you fly from for flights from Santa Rosa to Washington, D.C. Dulles Intl?

How long is the flight from Santa Rosa to Washington, D.C. Dulles Intl Airport?

Can I find deals for flights from Santa Rosa to Dulles Intl that include hotel bookings?

How can I find direct flights from Santa Rosa to Dulles Intl?

Can I find deals for business class flights from Santa Rosa to Dulles Intl?

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

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

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Cheapest flights from Santa Rosa to Dulles Intl
Explore the most affordable flight options available from Santa Rosa to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.