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Santa Rosa

$211+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — STS
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

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 3/56:20 pm
IAD
-
STS
1 stop8h 31m
Alaska Airlines
Tue 3/1010:51 am
STS
-
IAD
1 stop27h 36m
Alaska Airlines
Deal found 1/27$378
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 3/106:20 pm
IAD
-
STS
1 stop27h 42m
Alaska Airlines
Wed 3/186:53 pm
STS
-
IAD
1 stop7h 47m
Alaska Airlines
Deal found 1/25$401
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 3/96:27 pm
IAD
-
STS
1 stop19h 05m
Alaska Airlines
Tue 3/177:57 pm
STS
-
IAD
1 stop19h 14m
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.
Tue 3/106:20 pm
IAD
-
STS
1 stop27h 42m
Alaska Airlines
Thu 3/196:53 pm
STS
-
IAD
1 stop7h 47m
Alaska Airlines
Deal found 1/25$405
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 3/127:05 am
IAD
-
STS
1 stop19h 45m
Alaska Airlines
Tue 3/177:57 pm
STS
-
IAD
1 stop19h 14m
Alaska Airlines
Deal found 1/25$408
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 3/127:05 am
IAD
-
STS
1 stop19h 45m
Alaska Airlines
Thu 3/196:53 pm
STS
-
IAD
1 stop7h 47m
Alaska Airlines
Deal found 1/25$413
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 3/56:20 pm
IAD
-
STS
1 stop8h 31m
Alaska Airlines
Mon 3/96:37 pm
STS
-
IAD
1 stop19h 50m
Alaska Airlines
Deal found 1/27$418
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.
Fri 3/136:27 pm
IAD
-
STS
1 stop19h 05m
Alaska Airlines
Wed 3/186:53 pm
STS
-
IAD
1 stop7h 47m
Alaska Airlines
Deal found 1/25$423
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 3/96:27 pm
IAD
-
STS
1 stop19h 05m
Alaska Airlines
Mon 3/167:57 pm
STS
-
IAD
1 stop18h 23m
Alaska Airlines
Deal found 1/25$428
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 3/127:05 am
IAD
-
STS
1 stop19h 45m
Alaska Airlines
Mon 3/167:57 pm
STS
-
IAD
1 stop18h 23m
Alaska Airlines
Deal found 1/25$433
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 3/96:27 pm
IAD
-
STS
1 stop19h 05m
Alaska Airlines
Wed 3/187:05 am
STS
-
IAD
2 stops19h 35m
Alaska Airlines
Deal found 1/25$441

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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$401
(Alaska Airlines)

One-way from

$211
(Alaska Airlines)

Popular in

December

Cheapest in

February

Average price

$423
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 ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 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 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 January 27, 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

Dulles Intl

Fly to

Santa Rosa

Route

Depart

Return

Price

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Thu 3/5

6:20 pm-11:51 pm

1 stop8h 31m

Santa Rosa Sonoma County

Tue 3/10

10:51 am-5:27 pm

1 stop27h 36m

$378

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Tue 3/10

6:20 pm-7:02 pm

1 stop27h 42m

Santa Rosa Sonoma County

Wed 3/18

6:53 pm-5:40 am

1 stop7h 47m

$401

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Mon 3/9

6:27 pm-10:32 am

1 stop19h 05m

Santa Rosa Sonoma County

Tue 3/17

7:57 pm-6:11 pm

1 stop19h 14m

$403

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Mon 3/9

6:27 pm-10:32 am

1 stop19h 05m

Santa Rosa Sonoma County

Wed 3/18

6:53 pm-5:40 am

1 stop7h 47m

$403

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Wed 3/11

7:05 am-9:52 pm

1 stop17h 47m

Santa Rosa Sonoma County

Wed 3/18

6:53 pm-5:40 am

1 stop7h 47m

$403

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Sat 3/14

7:05 am-9:52 pm

1 stop17h 47m

Santa Rosa Sonoma County

Tue 3/17

7:57 pm-6:11 pm

1 stop19h 14m

$403

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Tue 3/10

7:05 am-9:52 pm

1 stop17h 47m

Santa Rosa Sonoma County

Tue 3/17

7:57 pm-6:11 pm

1 stop19h 14m

$403

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Wed 3/11

7:05 am-9:52 pm

1 stop17h 47m

Santa Rosa Sonoma County

Tue 3/17

7:57 pm-6:11 pm

1 stop19h 14m

$403

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Tue 3/10

6:20 pm-7:02 pm

1 stop27h 42m

Santa Rosa Sonoma County

Thu 3/19

6:53 pm-5:40 am

1 stop7h 47m

$405

Washington, D.C.Santa Rosa

IAD - STS

IADSTS

Washington, D.C. Dulles Intl

Mon 3/9

6:27 pm-10:32 am

1 stop19h 05m

Santa Rosa Sonoma County

Thu 3/19

6:53 pm-5:40 am

1 stop7h 47m

$408

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 21 results
1
2
3
  • 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, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Santa Rosa (average of $145). Flying from Washington, D.C. Dulles Intl Airport to Santa Rosa in September 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.

Reviews of airlines servicing Santa Rosa

Get insights into the airlines that provide service to Santa Rosa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Santa Rosa. Reviews last updated January 27, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Santa Rosa, such as Alaska Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,795 reviews

Entertainment

7.0

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,795 reviews
Alaska Airlines
8.0
Very good
11,795 reviews

Entertainment

7.0

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 1 airline. 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 $378, Alaska Airlines can have you in Santa Rosa from Washington, D.C. Dulles Intl Airport in 8h 31m. The distance from Washington, D.C. Dulles Intl Airport to Santa Rosa is about 2418 mi.

  • What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Santa Rosa round-trip?

    Flying on Alaska Airlines is currently your cheapest option to Santa Rosa, with prices starting at $440.

  • 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, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Santa Rosa (average of $145). Flying from Washington, D.C. Dulles Intl Airport to Santa Rosa in September 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 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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Top airline flying from Dulles Intl to Santa Rosa

Discover the top airline that operate flights from Dulles Intl to Santa Rosa. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$440Average$576FlexibilityNo cancel feeOn-time75%

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