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Cheap flights from Santa Rosa to Washington, D.C. from $175

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Santa Rosa to Washington, D.C. departing on 11/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Santa Rosa to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
5:34 pm - 5:40 amSTS  Santa Rosa Sonoma County-IAD Washington, D.C. Dulles Intl
9h 06m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
7:00 am - 12:46 pmIAD  Washington, D.C. Dulles Intl-STS Santa Rosa Sonoma County
8h 46m1 stop Seattle/Tacoma Intl
$349Alaska Airlines
Sat, Sep 19 - Tue, Sep 22
Alaska Airlines Logo
6:47 pm - 6:14 pmSTS  Santa Rosa Sonoma County-IAD Washington, D.C. Dulles Intl
20h 27m1 stop San Diego
Alaska Airlines Logo
7:47 pm - 9:54 amIAD  Washington, D.C. Dulles Intl-STS Santa Rosa Sonoma County
17h 07m1 stop San Diego
$350Alaska Airlines
Thu, Sep 10 - Mon, Sep 14
Alaska Airlines Logo
6:47 pm - 6:14 pmSTS  Santa Rosa Sonoma County-IAD Washington, D.C. Dulles Intl
20h 27m1 stop San Diego
Alaska Airlines Logo
7:47 pm - 9:54 amIAD  Washington, D.C. Dulles Intl-STS Santa Rosa Sonoma County
17h 07m1 stop San Diego
$372Alaska Airlines
Mon, Sep 14 - Thu, Sep 17
Alaska Airlines Logo
6:19 am - 5:50 pmSTS  Santa Rosa Sonoma County-IAD Washington, D.C. Dulles Intl
8h 31m1 stop San Diego
Alaska Airlines Logo
7:24 pm - 4:12 pmIAD  Washington, D.C. Dulles Intl-STS Santa Rosa Sonoma County
23h 48m2 stops San Diego Las Vegas Harry Reid Intl
$388Alaska Airlines
Wed, Oct 7 - Tue, Oct 13
Alaska Airlines Logo
5:34 pm - 5:40 amSTS  Santa Rosa Sonoma County-IAD Washington, D.C. Dulles Intl
9h 06m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
7:02 am - 1:06 pmIAD  Washington, D.C. Dulles Intl-STS Santa Rosa Sonoma County
9h 04m1 stop Seattle/Tacoma Intl
$391Alaska Airlines
Wed, Sep 30 - Mon, Oct 19
Alaska Airlines Logo
6:19 am - 5:50 pmSTS  Santa Rosa Sonoma County-IAD Washington, D.C. Dulles Intl
8h 31m1 stop San Diego
Alaska Airlines Logo
7:02 am - 7:50 pmIAD  Washington, D.C. Dulles Intl-STS Santa Rosa Sonoma County
15h 48m2 stops Seattle/Tacoma Intl San Diego
$392Alaska Airlines
Sat, Oct 3 - Wed, Oct 7
Alaska Airlines Logo
6:16 am - 6:14 pmSTS  Santa Rosa Sonoma County-IAD Washington, D.C. Dulles Intl
8h 58m1 stop San Diego
Alaska Airlines Logo
7:00 am - 12:43 pmIAD  Washington, D.C. Dulles Intl-STS Santa Rosa Sonoma County
8h 43m1 stop Seattle/Tacoma Intl
$395Alaska Airlines
Mon, Aug 31 - Tue, Sep 1
Alaska Airlines Logo
6:16 am - 6:14 pmSTS  Santa Rosa Sonoma County-IAD Washington, D.C. Dulles Intl
8h 58m1 stop San Diego
Alaska Airlines Logo
7:47 pm - 9:54 amIAD  Washington, D.C. Dulles Intl-STS Santa Rosa Sonoma County
17h 07m1 stop San Diego
$400Alaska Airlines
Thu, Sep 3 - Thu, Sep 10
Alaska Airlines Logo
1:40 pm - 6:14 pmSTS  Santa Rosa Sonoma County-IAD Washington, D.C. Dulles Intl
25h 34m2 stops Las Vegas Harry Reid Intl San Diego
Alaska Airlines Logo
7:47 pm - 9:54 amIAD  Washington, D.C. Dulles Intl-STS Santa Rosa Sonoma County
17h 07m1 stop San Diego
$401Alaska Airlines
Thu, Sep 10 - Mon, Sep 14
Alaska Airlines Logo
6:16 am - 6:14 pmSTS  Santa Rosa Sonoma County-IAD Washington, D.C. Dulles Intl
8h 58m1 stop San Diego
Alaska Airlines Logo
5:46 pm - 12:46 pmIAD  Washington, D.C. Dulles Intl-STS Santa Rosa Sonoma County
22h 00m1 stop Seattle/Tacoma Intl
$423Alaska Airlines
Sun, Sep 6 - Sat, Sep 26

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Alaska Airlines flights from Santa Rosa to Washington, D.C. Dulles Intl Airport

Our best Alaska Airlines deals on Santa Rosa to Washington, D.C. Dulles Intl Airport flight tickets
Alaska Airlines
Sep 19
STS5:34 pmSanta Rosa Sonoma County
9h 06m
1 stop
IAD5:40 amWashington, D.C. Dulles Intl
Sep 22
IAD7:00 amWashington, D.C. Dulles Intl
8h 46m
1 stop
STS12:46 pmSanta Rosa Sonoma County
$349
Alaska Airlines
Sep 10
STS6:47 pmSanta Rosa Sonoma County
20h 27m
1 stop
IAD6:14 pmWashington, D.C. Dulles Intl
Sep 14
IAD7:47 pmWashington, D.C. Dulles Intl
17h 07m
1 stop
STS9:54 amSanta Rosa Sonoma County
$350
Alaska Airlines
Sep 14
STS6:47 pmSanta Rosa Sonoma County
20h 27m
1 stop
IAD6:14 pmWashington, D.C. Dulles Intl
Sep 17
IAD7:47 pmWashington, D.C. Dulles Intl
17h 07m
1 stop
STS9:54 amSanta Rosa Sonoma County
$372

Delta flights from Santa Rosa to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Santa Rosa to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Dec 17
STS11:29 amSanta Rosa Sonoma County
9h 08m
1 stop
IAD11:37 pmWashington, D.C. Dulles Intl
Jan 6
IAD7:15 amWashington, D.C. Dulles Intl
7h 39m
1 stop
STS11:54 amSanta Rosa Sonoma County
$429
Delta
Jan 14
STS12:39 pmSanta Rosa Sonoma County
8h 07m
1 stop
IAD11:46 pmWashington, D.C. Dulles Intl
Jan 17
IAD7:15 amWashington, D.C. Dulles Intl
7h 39m
1 stop
STS11:54 amSanta Rosa Sonoma County
$449
Delta
Jan 14
STS12:39 pmSanta Rosa Sonoma County
8h 07m
1 stop
IAD11:46 pmWashington, D.C. Dulles Intl
Jan 17
IAD3:00 pmWashington, D.C. Dulles Intl
9h 48m
2 stops
STS9:48 pmSanta Rosa Sonoma County
$454

momondo Fare Finder

 
Customize your flight search to find flights from Santa Rosa to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated August 15, 2026.
Use the filters below to find and compare flights from Santa Rosa to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Santa RosaWashington, D.C.

STS Santa Rosa Sonoma County - IAD Washington, D.C. Dulles Intl

STSIAD

Santa Rosa Sonoma County

Sat 9/19

5:34 pm-5:40 am

1 stop9h 06m

Washington, D.C. Dulles Intl

Tue 9/22

7:00 am-12:46 pm

1 stop8h 46m

$349

Santa RosaWashington, D.C.

STS Santa Rosa Sonoma County - IAD Washington, D.C. Dulles Intl

STSIAD

Santa Rosa Sonoma County

Thu 9/10

6:47 pm-6:14 pm

1 stop20h 27m

Washington, D.C. Dulles Intl

Mon 9/14

7:47 pm-9:54 am

1 stop17h 07m

$350

Santa RosaWashington, D.C.

STS Santa Rosa Sonoma County - IAD Washington, D.C. Dulles Intl

STSIAD

Santa Rosa Sonoma County

Mon 9/14

6:47 pm-6:14 pm

1 stop20h 27m

Washington, D.C. Dulles Intl

Thu 9/17

7:47 pm-9:54 am

1 stop17h 07m

$372

Santa RosaWashington, D.C.

STS Santa Rosa Sonoma County - IAD Washington, D.C. Dulles Intl

STSIAD

Santa Rosa Sonoma County

Wed 10/7

6:19 am-5:50 pm

1 stop8h 31m

Washington, D.C. Dulles Intl

Tue 10/13

7:24 pm-4:12 pm

2 stops23h 48m

$388

Santa RosaWashington, D.C.

STS Santa Rosa Sonoma County - IAD Washington, D.C. Dulles Intl

STSIAD

Santa Rosa Sonoma County

Wed 9/30

5:34 pm-5:40 am

1 stop9h 06m

Washington, D.C. Dulles Intl

Mon 10/19

7:02 am-1:06 pm

1 stop9h 04m

$391

Santa RosaWashington, D.C.

STS Santa Rosa Sonoma County - IAD Washington, D.C. Dulles Intl

STSIAD

Santa Rosa Sonoma County

Sat 10/3

6:19 am-5:50 pm

1 stop8h 31m

Washington, D.C. Dulles Intl

Wed 10/7

7:02 am-7:50 pm

2 stops15h 48m

$392
Quickest round-trip

Santa RosaWashington, D.C.

STS Santa Rosa Sonoma County - IAD Washington, D.C. Dulles Intl

STSIAD

Santa Rosa Sonoma County

Mon 8/31

6:16 am-6:14 pm

1 stop8h 58m

Washington, D.C. Dulles Intl

Tue 9/1

7:00 am-12:43 pm

1 stop8h 43m

$395

Santa RosaWashington, D.C.

STS Santa Rosa Sonoma County - IAD Washington, D.C. Dulles Intl

STSIAD

Santa Rosa Sonoma County

Thu 9/3

6:16 am-6:14 pm

1 stop8h 58m

Washington, D.C. Dulles Intl

Thu 9/10

7:47 pm-9:54 am

1 stop17h 07m

$400

Santa RosaWashington, D.C.

STS Santa Rosa Sonoma County - IAD Washington, D.C. Dulles Intl

STSIAD

Santa Rosa Sonoma County

Thu 9/10

1:40 pm-6:14 pm

2 stops25h 34m

Washington, D.C. Dulles Intl

Mon 9/14

7:47 pm-9:54 am

1 stop17h 07m

$401

Santa RosaWashington, D.C.

STS Santa Rosa Sonoma County - IAD Washington, D.C. Dulles Intl

STSIAD

Santa Rosa Sonoma County

Sun 9/6

6:16 am-6:14 pm

1 stop8h 58m

Washington, D.C. Dulles Intl

Sat 9/26

5:46 pm-12:46 pm

1 stop22h 00m

$423

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Santa Rosa to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Wednesday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $541. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Santa Rosa to Washington, D.C. Dulles Intl Airport for around $764.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Santa Rosa in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $499 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $723 on average. Flights to Washington, D.C. Dulles Intl Airport from Santa Rosa in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Santa Rosa to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Santa Rosa to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Santa Rosa to Washington, D.C. Dulles Intl Airport (STS to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Santa Rosa to Washington, D.C. Dulles Intl Airport

Fastest flight time

8h 31m

Direct flights

None
The fastest flight from Santa Rosa to Washington, D.C. Dulles Intl Airport takes 8h 31m
There are no direct flights from Santa Rosa to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Santa Rosa to Washington, D.C. Dulles Intl Airport.
Search flight deals

Frequently asked questions about flying from Santa Rosa to Washington, D.C. Dulles Intl Airport

  • How far is Santa Rosa Sonoma County to Washington, D.C. Dulles Intl by plane?

    The straight-line distance from Santa Rosa Sonoma County to Washington, D.C. Dulles Intl is 2413.9 mi. Typically, this will take 8h 31m by plane in normal conditions.

  • When did momondo last update prices for flights from Santa Rosa Sonoma County Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Santa Rosa Sonoma County Airport to Washington, D.C. Dulles Intl Airport are updated daily.

  • How old do you have to be to fly from Santa Rosa Sonoma County Airport to Washington, D.C. Dulles Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Santa Rosa Sonoma County Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Arlington
Gettysburg
Winchester
Waldorf
Laurel
Woodbridge
Fredericksburg
Gaithersburg
Linthicum Heights
Rockville
Silver Spring
Towson
Sterling
Colonial Beach
Springfield
Fairfax
Tysons
Edgewood

Why use momondo?

Why should I use momondo to find a flight deal from Santa Rosa to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Santa Rosa.

Can I find flights from Santa Rosa to Washington, D.C. with flexible booking policies on momondo?

Flights from Santa Rosa to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Santa Rosa to Washington, D.C.?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Santa Rosa.

I’m not ready to book a flight from Santa Rosa to Washington, D.C. right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Santa Rosa to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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