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Dulles Intl

$139+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — IAD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to Washington, D.C. Dulles Intl are usually found in September or May, booked 61 days in advance, depart on a Wednesday or Thursday 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 June 12, 2025.

Round-trip from

$256
(FlightHub)

One-way from

$139
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$477

Good round-trip deal

$403 or less

Good one-way deal

$218 or less
From San Francisco to Washington, D.C. Dulles Intl
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One-way flight from San Francisco to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 12% potential increase in price ($63 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from San Francisco to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from San Francisco to Washington, D.C. Dulles Intl.
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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 June 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/151:09 pmSFO - IAD
1 stop14h 25mFrontier
Tue 7/227:30 amIAD - SFO
1 stop7h 45mFrontier
Deal found 6/9$256
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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 8/1210:43 pmSFO - IAD
Nonstop5h 07mAlaska Airlines
Wed 8/138:19 pmIAD - SFO
1 stop14h 09mAlaska Airlines
Deal found 6/9$279
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Tue 8/127:20 amSFO - IAD
1 stop8h 39mHawaiian Airlines
Wed 8/137:59 pmIAD - SFO
Nonstop5h 47mHawaiian Airlines
Deal found 6/11$284
This Sun Country Air deal was found by Cheapflights users on 6/10. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2811:59 pmSFO - IAD
1 stop8h 38mSun Country Air
Thu 8/71:28 pmIAD - SFO
1 stop12h 28mSun Country Air
Deal found 6/10$295
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/95:50 amSFO - IAD
2 stops10h 01mAmerican Airlines
Thu 9/1811:47 amIAD - SFO
1 stop10h 29mAmerican Airlines
Deal found 6/10$302
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/712:20 amSFO - IAD
Nonstop5h 12mUnited Airlines
Fri 7/256:32 amIAD - SFO
Nonstop5h 48mUnited Airlines
Deal found 6/9$357
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 8/1212:35 amSFO - IAD
1 stop7h 43mDelta
Sun 8/177:30 pmIAD - SFO
1 stop8h 05mDelta
Deal found 6/10$368
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:15 amSFO - IAD
2 stops12h 35mSouthwest
Mon 9/222:10 pmIAD - SFO
2 stops11h 15mSouthwest
Deal found 6/10$373
This Booking.com deal was found by Cheapflights users on 6/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/239:43 pmSFO - IAD
1 stop29h 47mMultiple Airlines
Mon 7/2112:52 pmIAD - SFO
1 stop13h 01mMultiple Airlines
Deal found 6/10$404

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 June 12, 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

Tue 7/15

1:09 pm-6:34 am

1 stop14h 25m

Washington, D.C. Dulles Intl

Tue 7/22

7:30 am-12:15 pm

1 stop7h 45m

$256

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 8/12

10:43 pm-6:50 am

Nonstop5h 07m

Washington, D.C. Dulles Intl

Wed 8/13

8:19 pm-7:28 am

1 stop14h 09m

$279

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 8/12

7:20 am-6:59 pm

1 stop8h 39m

Washington, D.C. Dulles Intl

Wed 8/13

7:59 pm-10:46 pm

Nonstop5h 47m

$284

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Mon 7/28

11:59 pm-11:37 am

1 stop8h 38m

Washington, D.C. Dulles Intl

Thu 8/7

1:28 pm-10:56 pm

1 stop12h 28m

$295

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 8/12

12:35 am-11:18 am

1 stop7h 43m

Washington, D.C. Dulles Intl

Mon 8/18

6:50 pm-11:57 pm

1 stop8h 07m

$297

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 9/9

5:50 am-6:51 pm

2 stops10h 01m

Washington, D.C. Dulles Intl

Thu 9/18

11:47 am-7:16 pm

1 stop10h 29m

$302

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Mon 7/7

12:20 am-8:32 am

Nonstop5h 12m

Washington, D.C. Dulles Intl

Fri 7/25

6:32 am-9:20 am

Nonstop5h 48m

$357

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Sat 9/20

7:15 am-10:50 pm

2 stops12h 35m

Washington, D.C. Dulles Intl

Mon 9/22

2:10 pm-10:25 pm

2 stops11h 15m

$373

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Mon 6/23

9:43 pm-6:30 am

1 stop29h 47m

Washington, D.C. Dulles Intl

Mon 7/21

12:52 pm-10:53 pm

1 stop13h 01m

$404

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Thu 8/21

8:00 pm-6:30 am

1 stop7h 30m

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 18 results
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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.

Read more about United Airlinesby Harriet Baskas
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.

Read more about Alaska Airlinesby Robert Schrader
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 June 9, 2025.

Booking 61 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, August is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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 June 12, 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 14% versus a flight in the evening.

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 June 8, 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. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Francisco to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from San Francisco to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from SFO to IAD are scheduled on a Thursday (44 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (19 on average).

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

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.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

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).

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 June 12, 2025.
Read through reviews of airlines operating flights from San Francisco to Washington, D.C., such as Alaska Airlines, Southwest and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

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

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

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 26 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.

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

    Frontier, at $256, 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 Alaska Airlines and Hawaiian Airlines. You may be able to fly from San Francisco to Washington, D.C. Dulles Intl Airport for 43% less than the average price by searching for these airlines.

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

    The cheapest airlines for a one-way flight from San Francisco to Washington, D.C. Dulles Intl Airport are Frontier ($139), Sun Country Air ($143), and Hawaiian Airlines ($149).

  • 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 Austrian Airlines (97%), Iberia (91%) or Air China (87%) 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 $159. On average you can expect to pay $1,087. The most popular route, (San Francisco - Washington, D.C. Dulles Intl), can usually be booked for $288.

  • 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, August is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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 San Francisco?

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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.
Los Angeles to Dulles Intl flights
Los Angeles to Reagan-National flights
Los Angeles to Baltimore flights
San Francisco to Reagan-National flights
San Francisco to Baltimore flights
Ontario to Dulles Intl flights
San Diego to Dulles Intl flights
Burbank to Baltimore flights
San Diego to Reagan-National flights
Santa Ana to Reagan-National flights
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San Diego to Baltimore flights
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Las Vegas to Baltimore flights
Las Vegas to Dulles Intl flights
Oakland to Baltimore flights
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San Jose to Reagan-National flights
Las Vegas to Reagan-National flights
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Sacramento to Reagan-National flights
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Fresno to Dulles Intl flights
Reno to Dulles Intl flights
Burbank to Reagan-National flights
Oakland to Reagan-National flights
Burbank to Dulles Intl flights
Long Beach to Baltimore flights
Reno to Reagan-National flights
Fresno to Reagan-National flights
Reno to Baltimore flights
Palm Springs to Dulles Intl flights
Long Beach to Dulles Intl flights
San Luis Obispo to Dulles Intl flights
Palm Springs to Baltimore flights
Fresno to Baltimore flights
Santa Barbara to Dulles Intl flights
Monterey to Dulles Intl flights
Santa Barbara to Baltimore flights
San Luis Obispo to Reagan-National flights
Palm Springs to Reagan-National flights
Monterey to Reagan-National flights
Bakersfield to Reagan-National flights
Santa Rosa to Dulles Intl flights
Long Beach to Reagan-National flights

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$48Average$246FlexibilityNo cancel feeOn-time65%
FrontierCheapest$126Average$224FlexibilityNo cancel feeOn-time62%
DeltaCheapest$208Average$378FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$218Average$515FlexibilityNo cancel feeOn-time83%
Hawaiian AirlinesCheapest$237Average$397FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$250Average$407FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$256Average$503FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$286Average$456FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$297Average$504FlexibilityNo cancel feeOn-time69%

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