What are the cheapest airlines flying from Santa Rosa to Washington, D.C. Dulles Intl Airport round-trip?

Cheapflights users have booked flights from Santa Rosa to Washington, D.C. Dulles Intl Airport round-trip from $322. Other airlines that can offer you cheap pricing are Hawaiian Airlines, from $338, and American Airlines, from $715. Alaska Airlines is 32% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from Santa Rosa to Washington, D.C. Dulles Intl Airport one-way?

For one-way options, check prices for Hawaiian Airlines. According to our data, you can fly for as low as $359. Users have also found prices from $410 and $847 on American Airlines and Alaska Airlines, respectively.

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

Travelers seeking maximum savings on their Santa Rosa to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

Travelers have found that booking a Monday departure is the best way to save up to 29% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

How far in advance should I book a flight from Santa Rosa to Washington, D.C. Dulles Intl Airport?

To save on the cost of your flight from Santa Rosa to Washington, D.C. Dulles Intl Airport, book at least 29 days before your planned departure. Booking around this time can save you about 92% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $494 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $633.

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

September can be a great time to fly to Washington, D.C. Dulles Intl Airport from Santa Rosa with a flight ticket averaging about $428. Cheapflights users have found deals in the month of September for as cheap as $155. The most expensive prices can be found in the month of December.

What is the cheapest time of day to fly from STS to IAD?

When flying from Santa Rosa to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Santa Rosa to Washington, D.C. Dulles Intl?

Most people fly from Santa Rosa Sonoma County (STS) if they book a flight from Santa Rosa to Washington, D.C. Dulles Intl. On average, Sonoma County has 0 outbound flights to 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.

Can I find deals for flights from Santa Rosa to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Santa Rosa to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Santa Rosa to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santa Rosa to Dulles Intl.

Can I find deals for business class flights from Santa Rosa to Dulles Intl?

Yes. Cheapflights offers flight deals from Santa Rosa to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$322+ Flights from Santa Rosa to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Santa Rosa to Dulles Intl

Round-trip from	$322 (Alaska Airlines)
Popular in	May
Cheapest in	April
Average price	$577

From Santa Rosa Sonoma County to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($69 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($29 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from Santa Rosa to Dulles Intl

Cheapest flights from Santa Rosa to Dulles Intl
Explore the most affordable flight options available from Santa Rosa to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Wed 8/276:00 amSTS - IAD

1 stop7h 47mAlaska Airlines

Tue 9/25:52 pmIAD - STS

1 stop23h 35mAlaska Airlines

Deal found 7/28

$322

Tue 9/236:00 amSTS - IAD

1 stop7h 52mHawaiian Airlines

Sat 9/277:00 amIAD - STS

1 stop9h 36mHawaiian Airlines

Deal found 7/28

$338

Tue 9/231:00 pmSTS - IAD

2 stops18h 57mAmerican Airlines

Sat 9/276:25 amIAD - STS

1 stop8h 30mAmerican Airlines

Deal found 7/27

$715

Best flights from Santa Rosa to Dulles Intl
Discover carefully curated flight deals from Santa Rosa to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Wed 8/276:00 amSTS - IAD

1 stop7h 47mAlaska Airlines

Tue 9/25:52 pmIAD - STS

1 stop23h 35mAlaska Airlines

Deal found 7/28

$322

Tue 9/236:00 amSTS - IAD

1 stop7h 52mHawaiian Airlines

Sat 9/277:00 amIAD - STS

1 stop9h 36mHawaiian Airlines

Deal found 7/28

$338

Tue 9/231:00 pmSTS - IAD

2 stops18h 57mAmerican Airlines

Sat 9/276:25 amIAD - STS

1 stop8h 30mAmerican Airlines

Deal found 7/27

$715

Last-minute flights from Santa Rosa to Dulles Intl
Discover last-minute flight deals from Santa Rosa to Dulles Intl. Data last updated July 29, 2025 and is based on user searches.

Wed 8/610:00 amSTS - IAD

2 stops18h 27mAlaska Airlines

Wed 8/138:19 pmIAD - STS

1 stop30h 25mAlaska Airlines

Deal found 7/28

$625

Wed 8/276:00 amSTS - IAD

1 stop7h 47mAlaska Airlines

Tue 9/25:52 pmIAD - STS

1 stop23h 35mAlaska Airlines

Deal found 7/28

$322

One-way flights from Santa Rosa to Dulles Intl
Search for one-way flight options from Santa Rosa to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Mon 9/16:00 amSTS - IAD

1 stop7h 52mHawaiian Airlines

Deal found 7/28

$359

Mon 9/14:17 pmSTS - IAD

2 stops14h 36mAmerican Airlines

Deal found 7/28

$410

Sun 8/247:00 amSTS - IAD

1 stop21h 32mAlaska Airlines

Deal found 7/29

$847

Cheapflights Fare Finder

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

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Wed 8/27

6:00 am-4:47 pm

1 stop7h 47m

Washington, D.C. Dulles Intl

Tue 9/2

5:52 pm-2:27 pm

1 stop23h 35m

$322

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Tue 9/23

6:00 am-4:52 pm

1 stop7h 52m

Washington, D.C. Dulles Intl

Sat 9/27

7:00 am-1:36 pm

1 stop9h 36m

$338

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Tue 9/23

1:00 pm-10:57 am

2 stops18h 57m

Washington, D.C. Dulles Intl

Sat 9/27

6:25 am-11:55 am

1 stop8h 30m

$715

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Mon 9/1

6:00 am-4:52 pm

1 stop7h 52m

$359

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Mon 9/1

4:17 pm-9:53 am

2 stops14h 36m

$410

Santa RosaWashington, D.C.

STS - IAD

STSIAD

Santa Rosa Sonoma County

Sun 8/24

7:00 am-7:32 am

1 stop21h 32m

$847

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Santa Rosa to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Santa Rosa 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 Santa Rosa to Washington, D.C. Dulles Intl Airport

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

Currently, August is the cheapest month in which you can book a flight from Santa Rosa to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Santa Rosa to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 Dulles Intl

Read reviews from past customers who have flown Alaska Airlines, Hawaiian Airlines, and American Airlines from Santa Rosa to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Hawaiian Airlines

7.8

Good

2,605 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

What airport do you fly from for flights from Santa Rosa to Washington, D.C. Dulles Intl?
Most people fly from Santa Rosa Sonoma County (STS) if they book a flight from Santa Rosa to Washington, D.C. Dulles Intl. On average, Sonoma County has 0 outbound flights to 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.
What are the cheapest airlines flying from Santa Rosa to Washington, D.C. Dulles Intl Airport round-trip?
Cheapflights users have booked flights from Santa Rosa to Washington, D.C. Dulles Intl Airport round-trip from $322. Other airlines that can offer you cheap pricing are Hawaiian Airlines, from $338, and American Airlines, from $715. Alaska Airlines is 32% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Santa Rosa to Washington, D.C. Dulles Intl Airport one-way?
For one-way options, check prices for Hawaiian Airlines. According to our data, you can fly for as low as $359. Users have also found prices from $410 and $847 on American Airlines and Alaska Airlines, respectively.
Can I find deals for flights from Santa Rosa to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Santa Rosa to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Santa Rosa to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santa Rosa to Dulles Intl.
Can I find deals for business class flights from Santa Rosa to Dulles Intl?
Yes. Cheapflights offers flight deals from Santa Rosa to Dulles Intl 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 Santa Rosa to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Santa Rosa to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Santa Rosa to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

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$322+ Cheap flights from Santa Rosa (STS) to Dulles Intl (IAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Santa Rosa to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Santa Rosa to Dulles Intl

Round-trip from

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Cheapest in

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Find flight deals from Santa Rosa to Dulles Intl

Cheapest flights from Santa Rosa to Dulles IntlExplore the most affordable flight options available from Santa Rosa to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Explore the most affordable flight options available from Santa Rosa to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Santa Rosa to Washington, D.C. Dulles Intl Airport that are best for you.

Best time to book a flight from Santa Rosa to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Santa Rosa with our price prediction graph.

Cheapflights Insights

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

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

Reviews of airlines servicing Dulles Intl

Related info for your journey

Find useful and relevant information for your journey from Santa Rosa to Dulles Intl. 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 from for flights from Santa Rosa to Washington, D.C. Dulles Intl?

What are the cheapest airlines flying from Santa Rosa to Washington, D.C. Dulles Intl Airport round-trip?

What are the cheapest airlines to fly from Santa Rosa to Washington, D.C. Dulles Intl Airport one-way?

Can I find deals for flights from Santa Rosa to Dulles Intl that include hotel bookings?

How can I find direct flights from Santa Rosa to Dulles Intl?

Can I find deals for business class flights from Santa Rosa to Dulles Intl?

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Cheapest flights from Santa Rosa to Dulles Intl
Explore the most affordable flight options available from Santa Rosa to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.