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Santa Rosa

$199+ 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — STS
May 28 — Jun 41
Thu 5/28
Thu 6/4
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 April 28, 2026.

This Alaska Airlines deal was found by Cheapflights users on 4/23. 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 6/26:00 am
IAD
-
STS
1 stop9h 17m
Alaska Airlines
Wed 6/37:01 am
STS
-
IAD
1 stop7h 41m
Alaska Airlines
Deal found 4/23$343
This Alaska Airlines deal was found by Cheapflights users on 4/25. 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 5/237:37 pm
IAD
-
STS
1 stop18h 48m
Alaska Airlines
Tue 5/267:40 pm
STS
-
IAD
1 stop19h 02m
Alaska Airlines
Deal found 4/25$418
This Alaska Airlines deal was found by Cheapflights users on 4/26. 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.
Mon 5/185:35 pm
IAD
-
STS
2 stops26h 29m
Alaska Airlines
Sat 5/238:26 pm
STS
-
IAD
1 stop8h 08m
Alaska Airlines
Deal found 4/26$427
This Alaska Airlines deal was found by Cheapflights users on 4/26. 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 5/206:00 am
IAD
-
STS
1 stop9h 17m
Alaska Airlines
Sat 5/238:26 pm
STS
-
IAD
1 stop8h 08m
Alaska Airlines
Deal found 4/26$439
This Expedia deal was found by Cheapflights users on 4/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:29 pm
IAD
-
STS
1 stop17h 25m
Alaska Airlines
Tue 9/156:13 am
STS
-
IAD
1 stop9h 01m
Alaska Airlines
Deal found 4/24$441
This Alaska Airlines deal was found by Cheapflights users on 4/26. 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.
Sun 5/316:00 am
IAD
-
STS
1 stop9h 17m
Alaska Airlines
Mon 6/87:01 am
STS
-
IAD
1 stop7h 41m
Alaska Airlines
Deal found 4/26$460
This Alaska Airlines deal was found by Cheapflights users on 4/26. 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.
Tue 5/196:00 am
IAD
-
STS
1 stop9h 17m
Alaska Airlines
Fri 5/226:59 pm
STS
-
IAD
2 stops18h 39m
Alaska Airlines
Deal found 4/26$475

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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$343
(Alaska Airlines)

One-way from

$199
(Alaska Airlines)

Popular in

March

Cheapest in

February

Average price

$474
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. 6% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 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

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Tue 6/2

6:00 am-12:17 pm

1 stop9h 17m

Santa Rosa Sonoma County

Wed 6/3

8:26 pm-7:34 am

1 stop8h 08m

$397

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Sat 5/23

7:37 pm-11:25 am

1 stop18h 48m

Santa Rosa Sonoma County

Tue 5/26

7:40 pm-5:42 pm

1 stop19h 02m

$397

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Sun 9/6

7:29 pm-9:54 am

1 stop17h 25m

Santa Rosa Sonoma County

Sat 9/12

6:13 am-6:14 pm

1 stop9h 01m

$478

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Sun 9/6

5:08 am-3:47 pm

2 stops13h 39m

Santa Rosa Sonoma County

Sat 9/12

4:21 pm-10:32 am

2 stops15h 11m

$504

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Sat 9/5

7:00 am-3:56 pm

2 stops11h 56m

Santa Rosa Sonoma County

Sat 9/12

5:31 pm-5:40 am

1 stop9h 09m

$550
Quickest round-trip

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Sun 5/17

6:00 am-12:17 pm

1 stop9h 17m

Santa Rosa Sonoma County

Tue 5/19

7:01 am-5:42 pm

1 stop7h 41m

$568

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Mon 5/25

6:00 am-12:17 pm

1 stop9h 17m

Santa Rosa Sonoma County

Mon 6/1

2:53 pm-7:34 am

2 stops13h 41m

$568

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Fri 8/21

7:00 am-12:43 pm

1 stop8h 43m

Santa Rosa Sonoma County

Tue 8/25

5:31 pm-5:40 am

1 stop9h 09m

$570

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Tue 7/21

6:03 am-3:55 pm

2 stops12h 52m

Santa Rosa Sonoma County

Thu 7/30

6:26 am-6:45 pm

1 stop9h 19m

$625

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Mon 5/18

7:37 pm-2:13 pm

1 stop21h 36m

Santa Rosa Sonoma County

Sat 5/23

8:26 pm-7:34 am

1 stop8h 08m

$625

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 22 resultsSorted by cheapest first
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  • 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 $397, Alaska Airlines can have you in Santa Rosa from Washington, D.C. Dulles Intl Airport in 9h 17m. 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

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