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Dulles Intl

$211+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
STS — IAD
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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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 January 27, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/247:57 pm
STS
-
IAD
1 stop18h 23m
Alaska Airlines
Sat 2/287:05 am
IAD
-
STS
1 stop17h 47m
Alaska Airlines
Deal found 1/25$383
This Alaska Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/267:57 pm
STS
-
IAD
1 stop30h 43m
Alaska Airlines
Tue 3/37:05 am
IAD
-
STS
1 stop17h 47m
Alaska Airlines
Deal found 1/25$388
This Travelocity deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/107:46 pm
STS
-
IAD
1 stop18h 36m
Alaska Airlines
Wed 4/157:00 am
IAD
-
STS
1 stop14h 01m
Alaska Airlines
Deal found 1/26$394
This Alaska Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:37 pm
STS
-
IAD
1 stop19h 50m
Alaska Airlines
Tue 3/37:05 am
IAD
-
STS
2 stops30h 06m
Alaska Airlines
Deal found 1/25$398
This Alaska Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:57 pm
STS
-
IAD
1 stop30h 43m
Alaska Airlines
Tue 3/37:05 am
IAD
-
STS
1 stop17h 47m
Alaska Airlines
Deal found 1/25$403
This Alaska Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:37 pm
STS
-
IAD
1 stop19h 50m
Alaska Airlines
Fri 2/276:20 pm
IAD
-
STS
1 stop8h 31m
Alaska Airlines
Deal found 1/25$407
This Alaska Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/237:57 pm
STS
-
IAD
1 stop18h 23m
Alaska Airlines
Mon 3/26:27 pm
IAD
-
STS
1 stop19h 05m
Alaska Airlines
Deal found 1/25$408
This Alaska Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/197:57 pm
STS
-
IAD
1 stop30h 43m
Alaska Airlines
Sun 3/87:05 am
IAD
-
STS
1 stop30h 27m
Alaska Airlines
Deal found 1/27$413
This Alaska Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/247:57 pm
STS
-
IAD
1 stop18h 23m
Alaska Airlines
Tue 3/37:05 am
IAD
-
STS
2 stops30h 06m
Alaska Airlines
Deal found 1/25$421
This Alaska Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/247:57 pm
STS
-
IAD
1 stop18h 23m
Alaska Airlines
Sun 3/17:05 am
IAD
-
STS
2 stops54h 06m
Alaska Airlines
Deal found 1/25$431

Find flight deals from Santa Rosa to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$383
(Alaska Airlines)

One-way from

$211
(Alaska Airlines)

Popular in

December

Cheapest in

February

Average price

$424
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 ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Santa Rosa to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
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

Santa Rosa

Fly to

Dulles Intl

Route

Depart

Return

Price

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Wed 2/25

7:57 pm-5:40 am

1 stop30h 43m

Washington, D.C. Dulles Intl

Wed 3/4

7:05 am-9:52 pm

1 stop17h 47m

$383

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Wed 2/25

7:57 pm-5:20 pm

1 stop18h 23m

Washington, D.C. Dulles Intl

Mon 3/2

7:05 am-10:32 am

1 stop30h 27m

$383

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Thu 2/26

7:57 pm-5:40 am

1 stop30h 43m

Washington, D.C. Dulles Intl

Mon 3/2

7:05 am-10:32 am

1 stop30h 27m

$388

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Fri 2/27

6:37 pm-5:27 pm

1 stop19h 50m

Washington, D.C. Dulles Intl

Tue 3/3

6:20 pm-7:02 pm

1 stop27h 42m

$403

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Mon 2/23

6:37 pm-5:27 pm

1 stop19h 50m

Washington, D.C. Dulles Intl

Tue 3/3

6:20 pm-7:02 pm

1 stop27h 42m

$403

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Sat 2/28

7:57 pm-5:40 am

1 stop30h 43m

Washington, D.C. Dulles Intl

Wed 3/4

7:05 am-9:52 pm

1 stop17h 47m

$403

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Sat 2/28

7:57 pm-5:40 am

1 stop30h 43m

Washington, D.C. Dulles Intl

Tue 3/3

7:05 am-9:52 pm

1 stop17h 47m

$403

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Fri 2/27

6:37 pm-5:27 pm

1 stop19h 50m

Washington, D.C. Dulles Intl

Thu 3/5

6:20 pm-11:51 pm

1 stop8h 31m

$407

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Mon 2/23

7:57 pm-5:20 pm

1 stop18h 23m

Washington, D.C. Dulles Intl

Mon 3/2

6:27 pm-10:32 am

1 stop19h 05m

$408

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Thu 2/26

7:57 pm-5:20 pm

1 stop18h 23m

Washington, D.C. Dulles Intl

Sat 2/28

7:05 am-9:52 pm

1 stop17h 47m

$408

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 19 results
1
2
  • Most accurate provider: When it comes to deals on Santa Rosa-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Santa Rosa-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 January is currently the most expensive (average of $277). 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

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?

    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 43m. Alaska Airlines provides one of the quickest options available for as low as $383. 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 January is currently the most expensive (average of $277). 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

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

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro

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Alternative routes for Santa Rosa to Dulles Intl

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