Dulles Intl

$134+ Cheap flights from San Francisco (SFO) to Dulles Intl (IAD)

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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — IAD
ago. 26 — sep. 21
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Cheapflights Tip: The best prices from San Francisco to Washington, D.C. Dulles Intl are usually found in July or May, booked 43 days in advance, depart on a Thursday or Wednesday and return on a Thursday

Cheap flight deals from San Francisco to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Dulles Intl (IAD). 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 agosto 21, 2025.

Round-trip from

$266
(Frontier)

One-way from

$134
(Kiwi.com)

Popular in

December

Cheapest in

July

Average price

$477

Good round-trip deal

$414 or less

Good one-way deal

$220 or less
From San Francisco to Washington, D.C. Dulles Intl
One-way flight from San Francisco to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 11% potential increase in price ($59 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Average for round-trip flights in August 2025
Price to beat on a round-trip flight from San Francisco to Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from San Francisco to Washington, D.C. Dulles Intl.

Find flight deals from San Francisco to Dulles Intl

Cheapest flights from San Francisco to Dulles Intl
Explore the most affordable flight options available from San Francisco to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 21, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/278:00 amSFO - IAD
1 stop19h 30mFrontier
sáb. 8/308:00 amIAD - SFO
1 stop7h 31mFrontier
Deal found 8/20$265
This Delta deal was found by Cheapflights users on 8/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/3012:45 amSFO - IAD
1 stop7h 33mDelta
lun. 10/65:52 pmIAD - SFO
1 stop9h 04mDelta
Deal found 8/21$267
This Delta deal was found by Cheapflights users on 8/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/121:30 pmSFO - IAD
1 stop7h 03mDelta
mar. 9/233:31 pmIAD - SFO
1 stop10h 10mDelta
Deal found 8/20$268
This Priceline deal was found by Cheapflights users on 8/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/1211:57 pmSFO - IAD
1 stop9h 05mFrontier
dom. 9/141:55 pmIAD - SFO
1 stop10h 26mFrontier
Deal found 8/20$272
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/1311:00 pmSFO - IAD
1 stop10h 55mFrontier
sáb. 9/207:00 amIAD - SFO
1 stop17h 21mFrontier
Deal found 8/20$275
This Delta deal was found by Cheapflights users on 8/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/2112:35 amSFO - IAD
1 stop7h 51mDelta
mié. 11/127:20 amIAD - SFO
1 stop8h 11mDelta
Deal found 8/21$276
This Delta deal was found by Cheapflights users on 8/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/2110:57 pmSFO - IAD
1 stop7h 03mDelta
mar. 10/286:18 amIAD - SFO
1 stop10h 12mDelta
Deal found 8/21$277
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/611:00 pmSFO - IAD
1 stop10h 55mFrontier
lun. 9/81:55 pmIAD - SFO
1 stop10h 26mFrontier
Deal found 8/21$278
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/2011:00 pmSFO - IAD
1 stop10h 55mFrontier
vie. 9/261:55 pmIAD - SFO
1 stop10h 26mFrontier
Deal found 8/21$279
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/278:00 amSFO - IAD
1 stop19h 30mFrontier
jue. 9/41:55 pmIAD - SFO
1 stop10h 26mFrontier
Deal found 8/21$285

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Dulles Intl 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 agosto 21, 2025.
Use the filters below to find and compare flights from San Francisco to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

San Francisco

Fly to

Dulles Intl

Route

Depart

Return

Price

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

lun. 9/22

5:50 am-4:07 pm

1 stop7h 17m

Washington, D.C. Dulles Intl

sáb. 9/27

7:35 am-4:04 pm

1 stop11h 29m

$267

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

mié. 9/24

6:15 am-4:27 pm

1 stop7h 12m

Washington, D.C. Dulles Intl

sáb. 10/4

12:35 pm-6:48 pm

1 stop9h 13m

$267

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

lun. 9/22

12:45 am-11:18 am

1 stop7h 33m

Washington, D.C. Dulles Intl

jue. 10/2

7:05 pm-11:59 pm

1 stop7h 54m

$267

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

mié. 10/1

11:00 pm-8:59 am

1 stop6h 59m

Washington, D.C. Dulles Intl

lun. 10/6

5:52 pm-11:56 pm

1 stop9h 04m

$267

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

lun. 9/29

12:45 am-11:18 am

1 stop7h 33m

Washington, D.C. Dulles Intl

lun. 10/6

5:52 pm-11:56 pm

1 stop9h 04m

$267

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

sáb. 9/13

4:44 pm-6:01 am

1 stop10h 17m

Washington, D.C. Dulles Intl

mié. 9/24

5:00 pm-9:48 pm

1 stop7h 48m

$267

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

mar. 9/30

6:15 am-4:27 pm

1 stop7h 12m

Washington, D.C. Dulles Intl

sáb. 10/11

6:15 am-12:20 pm

1 stop9h 05m

$267

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

mié. 8/27

8:00 am-6:30 am

1 stop19h 30m

$134

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

sáb. 9/20

11:00 pm-12:55 pm

1 stop10h 55m

$135

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

sáb. 9/13

11:00 pm-12:55 pm

1 stop10h 55m

$135

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 16 results
1
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The best insider tips for San Francisco to Washington, D.C. Dulles Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to Washington, D.C. Dulles Intl Airport trip
Airlines
United Airlines

United's Economy Plus offers extra legroom, enhancing comfort on domestic routes.


United's Polaris Lounges offer exclusive amenities like showers and daybeds for premium passengers.

Alaska Airlines

Alaska's Premium Class offers extra legroom and free cocktails, enhancing comfort on medium-haul flights.


Alaska's Wi-Fi is a flat fee, ideal for business travelers needing connectivity during flights.

Airports
SFO

For a quick departure, use SFO's AirTrain Red Line to navigate between terminals efficiently, avoiding long walks post-security.

Read more about SFOby Harriet Baskas
IAD

Use the Silver Line Metro for a cost-effective trip from IAD to downtown Washington, D.C. in under 40 minutes.

Read more about IADby Ramsey Qubein
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines and SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from San Francisco to Dulles Intl

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

How far ahead should I book a flight from San Francisco to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Dulles Intl. Price data was last updated on August 8, 2025.

Booking 43 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, July is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of $303). Flying from San Francisco 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.

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

Find hourly flight availability from San Francisco to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 21, 2025.

When flying from San Francisco to Washington, D.C. Dulles Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 17% versus a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Dulles Intl. Price data was last updated on August 17, 2025.

Travelers seeking maximum savings on their San Francisco to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated agosto 21, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from San Francisco to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
8.0
Very good

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

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

Find useful and relevant information for your journey from San Francisco 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 San Francisco to Washington, D.C. Dulles Intl?

    Most people fly from San Francisco (SFO) if they book a flight from San Francisco to Washington, D.C. Dulles Intl. On average, San Francisco has 22 outbound flights to Washington, D.C. Dulles Intl per day from 9 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

  • How long is the flight from San Francisco to Washington, D.C. Dulles Intl Airport?

    Delta can get you from San Francisco to Washington, D.C. Dulles Intl Airport in just under 7h 17m. Your travel time can differ by up to . The distance from San Francisco to Washington, D.C. Dulles Intl Airport is about 2412 mi.

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

    Spirit Airlines, at $48, was found to be the cheapest airline from San Francisco to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include Frontier and American Airlines. You may be able to fly from San Francisco to Washington, D.C. Dulles Intl Airport for 89% less than the average price by searching for these airlines.

  • What are the most reliable airlines from San Francisco to Washington, D.C. Dulles Intl Airport?

    No one likes to see their flight delayed. When booking a flight from San Francisco to Washington, D.C. Dulles Intl Airport consider choosing Asiana Airlines (83%), United Airlines (82%) or Egyptair (79%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from San Francisco to Washington, D.C. Dulles Intl Airport?

    The cheapest flight price from San Francisco to Washington, D.C. Dulles Intl Airport is $169. On average you can expect to pay $1,062. The most popular route, (San Francisco - Washington, D.C. Dulles Intl), can usually be booked for $224.

  • Can I find deals for flights from San Francisco to Dulles Intl that include hotel bookings?

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

  • How can I find direct flights from San Francisco to Dulles Intl?

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

  • Can I find deals for business class flights from San Francisco to Dulles Intl?

    Yes. Cheapflights offers flight deals from San Francisco 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 San Francisco to Washington, D.C. Dulles Intl Airport?

    Currently, July is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of $303). Flying from San Francisco 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.

See more FAQs

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

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Waldorf
Bowie

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Francisco to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from San Francisco to Dulles Intl

Discover the top 9 airlines that operate flights from San Francisco to Dulles Intl. 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 agosto 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$48Average$108FlexibilityNo cancel feeOn-time65%
FrontierCheapest$128Average$267FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$172Average$379FlexibilityNo cancel feeOn-time71%
Sun Country AirCheapest$218Average$279FlexibilityNo cancel feeOn-time83%
DeltaCheapest$237Average$376FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$250Average$399FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$253Average$409FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$296Average$445FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$297Average$501FlexibilityNo cancel feeOn-time69%

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