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Santa Rosa

$119+ Cheap flights from Dulles Intl (IAD) to Santa Rosa (STS)

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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — STS
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
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Cheap flight deals from Dulles Intl to Santa Rosa

Cheapest flights from Dulles Intl to Santa Rosa
Explore the most affordable flight options available from Dulles Intl to Santa Rosa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.

This Alaska Airlines deal was found by Cheapflights users on 7/23. 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 9/87:35 pm
IAD
-
STS
1 stop17h 19m
Alaska Airlines
Fri 9/116:47 pm
STS
-
IAD
1 stop20h 27m
Alaska Airlines
Deal found 7/23$395
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:35 pm
IAD
-
STS
1 stop17h 19m
Alaska Airlines
Wed 9/96:13 am
STS
-
IAD
1 stop9h 01m
Alaska Airlines
Deal found 7/26$405
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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.
Sun 9/69:03 am
IAD
-
STS
1 stop15h 56m
Alaska Airlines
Sat 9/126:13 am
STS
-
IAD
1 stop9h 01m
Alaska Airlines
Deal found 7/24$412
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 9/27:35 pm
IAD
-
STS
1 stop31h 19m
Alaska Airlines
Sat 9/56:13 am
STS
-
IAD
1 stop9h 01m
Alaska Airlines
Deal found 7/27$413
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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.
Sat 9/57:35 pm
IAD
-
STS
1 stop17h 19m
Alaska Airlines
Wed 9/96:13 am
STS
-
IAD
1 stop9h 01m
Alaska Airlines
Deal found 7/27$418
This Alaska Airlines deal was found by Cheapflights users on 7/23. 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 8/227:35 pm
IAD
-
STS
1 stop17h 19m
Alaska Airlines
Sat 8/296:13 am
STS
-
IAD
1 stop9h 01m
Alaska Airlines
Deal found 7/23$420
This Orbitz deal was found by Cheapflights users on 7/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:03 am
IAD
-
STS
1 stop15h 56m
Alaska Airlines
Tue 9/156:13 am
STS
-
IAD
2 stops20h 27m
Alaska Airlines
Deal found 7/27$425
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:35 pm
IAD
-
STS
1 stop17h 19m
Alaska Airlines
Tue 9/85:34 pm
STS
-
IAD
1 stop27h 25m
Alaska Airlines
Deal found 7/26$432
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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.
Sat 10/317:24 pm
IAD
-
STS
1 stop18h 24m
Alaska Airlines
Wed 11/46:40 am
STS
-
IAD
1 stop8h 00m
Alaska Airlines
Deal found 7/27$433
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 9/307:00 am
IAD
-
STS
2 stops17h 31m
Alaska Airlines
Sat 10/36:16 am
STS
-
IAD
1 stop8h 34m
Alaska Airlines
Deal found 7/27$437

Find flight deals from Dulles Intl to Santa Rosa

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Santa Rosa (STS). 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 July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$395
(Alaska Airlines)

One-way from

$119
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$486
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Santa Rosa Sonoma County flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Santa Rosa Sonoma County flights.
Search Deals
From Washington, D.C. Dulles Intl to Santa Rosa Sonoma County
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Santa Rosa Sonoma County
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Santa Rosa 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 July 28, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Santa Rosa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Sat 10/31

7:02 am-1:06 pm

1 stop9h 04m

Santa Rosa Sonoma County

Wed 11/4

6:40 am-5:40 pm

1 stop8h 00m

$405

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Tue 8/25

7:35 pm-9:54 am

1 stop17h 19m

Santa Rosa Sonoma County

Tue 9/1

6:13 am-6:14 pm

1 stop9h 01m

$413

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Sun 9/6

9:03 am-9:31 pm

2 stops15h 28m

Santa Rosa Sonoma County

Sat 9/12

6:13 am-6:14 pm

1 stop9h 01m

$472

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Sun 11/22

6:00 am-4:06 pm

2 stops13h 06m

Santa Rosa Sonoma County

Tue 12/1

11:29 am-11:37 pm

1 stop9h 08m

$491

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Mon 8/17

7:53 pm-10:24 am

1 stop17h 31m

Santa Rosa Sonoma County

Mon 8/24

6:47 pm-6:14 pm

1 stop20h 27m

$498

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Fri 8/14

7:53 pm-10:58 pm

1 stop30h 05m

Santa Rosa Sonoma County

Mon 8/17

5:56 pm-6:45 pm

1 stop21h 49m

$603

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Wed 8/19

7:00 am-9:54 am

2 stops29h 54m

Santa Rosa Sonoma County

Fri 8/21

1:40 pm-6:14 pm

2 stops25h 34m

$660
Cheapest one-way

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Wed 9/2

7:35 pm-9:54 am

1 stop17h 19m

$223

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Tue 9/1

7:35 pm-11:54 pm

1 stop31h 19m

$232

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Wed 9/9

9:03 am-11:54 pm

2 stops17h 51m

$233

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 15 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Santa Rosa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Santa Rosa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Santa Rosa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Santa Rosa 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 Washington, D.C. Dulles Intl Airport-Santa Rosa 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 Dulles Intl to Santa Rosa

Have a flexible travel schedule? Discover the best time to fly to Santa Rosa from Dulles Intl 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.

Related info for your journey

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

    Most people fly into Santa Rosa Sonoma County (STS) if they book a flight to Santa Rosa from Washington, D.C. Dulles Intl. On average, Sonoma County has 0 inbound flights from 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 Washington, D.C. Dulles Intl Airport to Santa Rosa?

    For as low as $405, Alaska Airlines can have you in Santa Rosa from Washington, D.C. Dulles Intl Airport in 9h 04m. The distance from Washington, D.C. Dulles Intl Airport to Santa Rosa is about 2418 mi.

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

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

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

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

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

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

See more FAQs

Traveling to a place near Santa Rosa?

Book flights to Santa Rosa if you plan to visit one of these locations
Fort Bragg
Ukiah

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Alternative routes for Dulles Intl to Santa Rosa

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