IAD - STS

$197 Find Cheap Flights from Washington Dulles Airport to Santa Rosa

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Santa Rosa departing on 5/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Santa Rosa

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Santa Rosa, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Santa Rosa, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$369
Alaska Airlines
Tue 4/14Fri 4/17
IAD - STS • 1 stop
Cheapest one-way
$197
Alaska Airlines
Mon 5/11
IAD - STS • 1 stop
Top airlines
Alaska Airlines
Cheapest • from $369 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Santa Rosa!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Santa Rosa (IAD-STS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Santa Rosa that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Santa Rosa

Tue, Apr 14 - Fri, Apr 17
Alaska Airlines Logo
6:22 pm - 10:03 am
IAD
-
STS
18h 41m
1 stop
Alaska Airlines Logo
6:53 pm - 5:40 am
STS
-
IAD
7h 47m
1 stop
$369Alaska Airlines
Tue, Apr 14 - Fri, Apr 17
Alaska Airlines Logo
7:00 am - 6:01 pm
IAD
-
STS
14h 01m
1 stop
Alaska Airlines Logo
6:53 pm - 5:40 am
STS
-
IAD
7h 47m
1 stop
$379Alaska Airlines
Tue, Apr 14 - Fri, Apr 17
Alaska Airlines Logo
6:22 pm - 10:03 am
IAD
-
STS
18h 41m
1 stop
Alaska Airlines Logo
6:53 pm - 5:40 am
STS
-
IAD
7h 47m
1 stop
$391Alaska Airlines
Tue, Apr 28 - Wed, Apr 29
Alaska Airlines Logo
6:47 pm - 10:58 am
IAD
-
STS
19h 11m
1 stop
Alaska Airlines Logo
7:10 pm - 12:09 am
STS
-
IAD
25h 59m
2 stops
$393Alaska Airlines
Tue, Mar 3 - Mon, Mar 9
Alaska Airlines Logo
7:05 am - 9:52 pm
IAD
-
STS
17h 47m
1 stop
Alaska Airlines Logo
7:57 pm - 5:20 pm
STS
-
IAD
18h 23m
1 stop
$398Alaska Airlines
Sat, Apr 25 - Wed, Apr 29
Alaska Airlines Logo
7:10 am - 10:57 pm
IAD
-
STS
18h 47m
1 stop
Alaska Airlines Logo
1:13 pm - 5:50 am
STS
-
IAD
13h 37m
1 stop
$403Alaska Airlines
Mon, Apr 27 - Mon, May 4
Alaska Airlines Logo
7:20 pm - 10:57 pm
IAD
-
STS
30h 37m
1 stop
Alaska Airlines Logo
7:46 pm - 6:20 pm
STS
-
IAD
19h 34m
1 stop
$408Alaska Airlines
Mon, Apr 27 - Wed, Apr 29
Alaska Airlines Logo
6:47 pm - 7:06 pm
IAD
-
STS
27h 19m
1 stop
Alaska Airlines Logo
7:10 pm - 12:09 am
STS
-
IAD
25h 59m
2 stops
$413Alaska Airlines
Sat, Apr 25 - Mon, May 4
Alaska Airlines Logo
7:10 am - 10:57 pm
IAD
-
STS
18h 47m
1 stop
Alaska Airlines Logo
7:46 pm - 6:20 pm
STS
-
IAD
19h 34m
1 stop
$418Alaska Airlines
Sat, Apr 25 - Sat, May 2
Alaska Airlines Logo
7:10 am - 10:57 pm
IAD
-
STS
18h 47m
1 stop
Alaska Airlines Logo
7:46 pm - 12:09 am
STS
-
IAD
25h 23m
1 stop
$423Alaska Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Santa Rosa flights

Get data-powered insights and trends into flights from Dulles Intl to Santa Rosa to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Washington Dulles Airport to Santa Rosa?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Washington Dulles Airport to Santa Rosa were found on Alaska Airlines ($369) and Southwest ($451).

Good to know

Cheapest flight$197
Flight from Washington Dulles Airport to Santa Rosa

When to book flights from Dulles Intl to Santa Rosa

Are your dates flexible? Find out the best times to travel from Dulles Intl to Santa Rosa based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Santa Rosa flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Santa Rosa was $197 for a one-way ticket and $369 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Santa Rosa?

    No, a passport isn't needed to fly from Washington Dulles Airport to Santa Rosa. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Washington Dulles Airport to Santa Rosa?

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at Santa Rosa, also known as Santa Rosa Sonoma County.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Santa Rosa?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Santa Rosa?

    oneworld is the only airline alliance operating flights between Washington Dulles Airport and Santa Rosa.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Santa Rosa?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Santa Rosa.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Santa Rosa?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Santa Rosa from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Santa Rosa?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Santa Rosa with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and STS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Santa Rosa?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Santa Rosa from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Dulles Intl to Santa Rosa

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Santa Rosa. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Santa Rosa? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 11878 reviews
7.8Comfort
7.1Food
7.0Entertainment
8.5Crew
8.1Boarding
Airline reviews

Flight cancelled and deplaned. Rescheduled 8 hours later at a different airport. Ended up at destination but late.

6.0 GoodAnonymous, Feb 2026
DCA - SAN
Read more Alaska Airlines reviews

Flight cancelled and deplaned. Rescheduled 8 hours later at a different airport. Ended up at destination but late.

The seats are very small. I’m 5’ 3”, so don’t think I should notice. The food selection was non existent and very disappointing. 5 hour flight plus TSA, etc. I would have appreciated a small salad, crudités. Something fresher not just chips.

We appreciated that the flight attendant came through 3 times with drinks or water on the long flight..I was also glad that they were separating out recycling! I would have liked a 12oz sofa can instead of 7oz, but that's a minor quibble. The knee space in economy was also better than most of Alaska's competitors.

Flight from LAX to STS das excellent. Flight from DCA to LAX was troubled by the previous flight returning to the one DCA gate putting our flight in jeopardy. However another gate was arranged and that flight was a bit late, but was handled exceptionally.

You need a n/a category. Too short a flight for food. I love flying on Alaska from Santa Rosa Airport!

Almost 3 hr delay in Settle with very little information available to passengers. They boarded the plane and we waited for a long time inside the plane as well.

Online check in didn't work. Somehow ended up with 2 Alaska rewards numbers and 1 for Hawaiian. No one at check in could figure out what to do. No one at check in could help me confirm an upcoming flight on Hawaiian Airlines.

Boarding process was poorly handled by the gate crew and the onboard crew. No effort was made to provide equal treatment to passengers with overhead bin space. Crew seemed disengaged and unfriendly.

Awesome. Great flight. Super nice people and I like the extra space

On time, WiFi worked, reasonable legroom, helpful staff. Unfortunately there was no water for handwashing in the rear lavatory.

Everything you need to know for your flight from Dulles Intl to Santa Rosa

Information on your arrival and departure airports