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Santa Rosa

$164+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — STS
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
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 March 11, 2026.

This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 5/136:00 am
IAD
-
STS
1 stop9h 17m
Alaska Airlines
Wed 5/207:01 am
STS
-
IAD
1 stop7h 41m
Alaska Airlines
Deal found 3/7$327
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 5/136:00 am
IAD
-
STS
1 stop9h 17m
Alaska Airlines
Sat 5/168:26 pm
STS
-
IAD
1 stop8h 08m
Alaska Airlines
Deal found 3/7$337
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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.
Fri 4/176:22 pm
IAD
-
STS
1 stop18h 41m
Alaska Airlines
Tue 4/217:46 pm
STS
-
IAD
1 stop18h 55m
Alaska Airlines
Deal found 3/9$360
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 5/129:00 am
IAD
-
STS
2 stops17h 59m
Alaska Airlines
Tue 5/197:01 am
STS
-
IAD
1 stop7h 41m
Alaska Airlines
Deal found 3/7$365
This Orbitz deal was found by Cheapflights users on 3/7. 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 5/136:00 am
IAD
-
STS
1 stop9h 17m
Alaska Airlines
Tue 5/198:26 pm
STS
-
IAD
1 stop8h 08m
Alaska Airlines
Deal found 3/7$369
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 5/116:47 pm
IAD
-
STS
1 stop19h 11m
Alaska Airlines
Wed 5/207:01 am
STS
-
IAD
1 stop7h 41m
Alaska Airlines
Deal found 3/7$375
This Expedia deal was found by Cheapflights users on 3/9. 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.
Wed 4/157:00 am
IAD
-
STS
2 stops19h 59m
Alaska Airlines
Mon 4/207:46 pm
STS
-
IAD
1 stop18h 36m
Alaska Airlines
Deal found 3/9$384
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 5/116:47 pm
IAD
-
STS
1 stop19h 11m
Alaska Airlines
Sat 5/168:26 pm
STS
-
IAD
1 stop8h 08m
Alaska Airlines
Deal found 3/7$385
This Alaska Airlines deal was found by Cheapflights users on 3/8. 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 5/59:00 am
IAD
-
STS
2 stops17h 59m
Alaska Airlines
Wed 5/67:10 pm
STS
-
IAD
2 stops25h 59m
Alaska Airlines
Deal found 3/8$394
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 5/136:00 am
IAD
-
STS
1 stop9h 17m
Alaska Airlines
Mon 5/188:26 pm
STS
-
IAD
1 stop8h 08m
Alaska Airlines
Deal found 3/7$397
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 5/126:47 pm
IAD
-
STS
1 stop19h 38m
Alaska Airlines
Wed 5/207:01 am
STS
-
IAD
1 stop7h 41m
Alaska Airlines
Deal found 3/7$400
This Expedia deal was found by Cheapflights users on 3/10. 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.
Tue 4/147:00 am
IAD
-
STS
1 stop14h 01m
Alaska Airlines
Fri 4/177:46 pm
STS
-
IAD
1 stop18h 36m
Alaska Airlines
Deal found 3/10$402

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 March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$327
(Alaska Airlines)

One-way from

$164
(Alaska Airlines)

Popular in

March

Cheapest in

May

Average price

$487
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. 3% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 11, 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 4/14

7:00 am-6:01 pm

1 stop14h 01m

Santa Rosa Sonoma County

Fri 4/17

7:46 pm-5:22 pm

1 stop18h 36m

$402

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Tue 5/5

7:10 am-11:59 pm

2 stops19h 49m

Santa Rosa Sonoma County

Wed 5/6

7:10 pm-12:09 am

2 stops25h 59m

$404
Quickest round-trip

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Thu 8/20

6:30 am-6:07 pm

2 stops14h 37m

Santa Rosa Sonoma County

Sun 8/23

7:00 am-7:01 pm

1 stop9h 01m

$487

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Sun 9/6

5:38 pm-11:45 pm

2 stops33h 07m

Santa Rosa Sonoma County

Sat 9/12

7:00 am-7:01 pm

1 stop9h 01m

$487

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Sat 4/18

6:22 pm-11:13 pm

1 stop31h 51m

Santa Rosa Sonoma County

Sat 4/25

7:46 pm-5:50 am

1 stop31h 04m

$499
Cheapest one-way

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Wed 4/29

9:00 am-7:06 pm

2 stops13h 06m

$182

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Thu 4/23

7:10 am-11:27 pm

2 stops19h 17m

$244
Quickest one-way

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Wed 6/17

6:00 am-12:17 pm

1 stop9h 17m

$320

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Fri 6/19

7:48 pm-10:24 am

1 stop17h 36m

$359

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Wed 3/25

6:20 am-11:13 pm

3 stops19h 53m

$386

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 12 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.

Cheapflights Insights

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

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Santa Rosa (average of $227). Flying from Washington, D.C. Dulles Intl Airport to Santa Rosa in June is currently the most expensive (average of $283). 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 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 $402, Alaska Airlines can have you in Santa Rosa from Washington, D.C. Dulles Intl Airport in 14h 01m. 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.

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

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Santa Rosa (average of $227). Flying from Washington, D.C. Dulles Intl Airport to Santa Rosa in June is currently the most expensive (average of $283). 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 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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