Find flights
Deals
When to book
FAQs

Cheap flights from San Francisco to Washington, D.C. Dulles Intl Airport from £104

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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — IAD
14 Jan — 21 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from San Francisco to Washington, D.C. Dulles Intl are usually found in July or October, booked 83 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from San Francisco to Dulles Intl

Enter your travel dates to find the best prices.

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 15 December 2025.

Wed 31/1212:55SFO - IAD
Nonstop5h 00mUnited Airlines
Wed 7/119:45IAD - SFO
Nonstop6h 12mUnited Airlines
Deal found 13/12£312
Tue 30/1205:50SFO - IAD
1 stop7h 21mDelta
Wed 7/106:00IAD - SFO
1 stop7h 56mDelta
Deal found 13/12£327
Wed 31/1206:00SFO - IAD
2 stops13h 52mDelta
Sat 10/112:29IAD - SFO
1 stop10h 32mDelta
Deal found 13/12£348
Wed 31/1205:00SFO - IAD
1 stop13h 21mUnited Airlines
Tue 6/119:45IAD - SFO
Nonstop6h 12mUnited Airlines
Deal found 13/12£354
Thu 25/1206:00SFO - IAD
1 stop12h 21mUnited Airlines
Tue 6/119:45IAD - SFO
Nonstop6h 12mUnited Airlines
Deal found 13/12£354
Thu 25/1205:55SFO - IAD
1 stop13h 18mDelta
Wed 7/107:30IAD - SFO
1 stop9h 08mDelta
Deal found 14/12£356
Wed 31/1206:00SFO - IAD
2 stops13h 52mDelta
Fri 9/106:00IAD - SFO
1 stop8h 00mDelta
Deal found 13/12£363
Wed 31/1205:50SFO - IAD
1 stop8h 48mDelta
Tue 6/106:00IAD - SFO
1 stop7h 56mDelta
Deal found 13/12£364
Wed 31/1205:00SFO - IAD
1 stop13h 21mUnited Airlines
Thu 8/114:10IAD - SFO
Nonstop6h 09mUnited Airlines
Deal found 13/12£369
Thu 25/1205:55SFO - IAD
1 stop13h 18mDelta
Thu 8/107:30IAD - SFO
1 stop9h 08mDelta
Deal found 14/12£371
Sat 27/1205:50SFO - IAD
1 stop7h 21mDelta
Mon 5/107:30IAD - SFO
1 stop29h 05mDelta
Deal found 13/12£374

Find 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 15 December 2025.

Round-trip from

£207

One-way from

£104

Popular in

December

Cheapest in

July

Average price

£457

Good round-trip deal

£485 or less
Delta
  • Delta
  • 6/1-13/1
  • 2 total stops
  • 16h 35m total
  • San Francisco to Washington, D.C.
Search Deals
Delta
  • Delta
  • 7/1
  • 1 total stop
  • 7h 56m total
  • San Francisco to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£31 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from San Francisco to Washington, D.C. Dulles Intl.
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 15 December 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

Sat 7/2

05:45-16:46

1 stop8h 01m

Washington, D.C. Dulles Intl

Tue 10/2

12:40-17:43

1 stop8h 03m

£207

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Sat 7/2

10:30-23:10

1 stop9h 40m

Washington, D.C. Dulles Intl

Mon 23/2

07:30-13:48

1 stop9h 18m

£218

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Thu 5/2

10:30-23:10

1 stop9h 40m

Washington, D.C. Dulles Intl

Tue 10/2

07:15-12:55

1 stop8h 40m

£218

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Sat 7/3

10:20-23:10

1 stop9h 50m

Washington, D.C. Dulles Intl

Mon 9/3

07:00-14:04

1 stop10h 04m

£218

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 7/1

07:00-17:04

1 stop7h 04m

Washington, D.C. Dulles Intl

Thu 8/1

17:26-22:47

1 stop8h 21m

£221

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Thu 8/1

10:35-23:48

2 stops10h 13m

Washington, D.C. Dulles Intl

Wed 14/1

12:09-19:49

1 stop10h 40m

£221

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 6/1

05:45-16:46

1 stop8h 01m

Washington, D.C. Dulles Intl

Thu 8/1

12:29-18:38

1 stop9h 09m

£222

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Thu 29/1

10:30-23:10

1 stop9h 40m

Washington, D.C. Dulles Intl

Sun 1/2

07:30-15:58

1 stop11h 28m

£228

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Thu 29/1

10:30-23:10

1 stop9h 40m

Washington, D.C. Dulles Intl

Mon 9/2

07:30-13:43

1 stop9h 13m

£228

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Thu 5/2

10:30-23:10

1 stop9h 40m

Washington, D.C. Dulles Intl

Sun 8/2

07:30-14:40

1 stop10h 10m

£228

Flights are sorted by cheapest return flights first.

Deals found on 14/12

Showing 1-10 of 20 results
1
2

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 return 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 return flight from San Francisco to Dulles Intl. Price data was last updated on 12 December 2025.

Booking 83 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, May is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of £88). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of £207). 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 15 December 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 68% on flights from San Francisco to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the afternoon.

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?

    San Francisco (SFO) is the airport you will fly out of if you book a flight from San Francisco to Washington, D.C. Dulles Intl. You should not have trouble finding flights to Washington, D.C. Dulles Intl from San Francisco; the airport handles an average of 19 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the San Francisco airport to Washington, D.C. Dulles Intl. It is only a 11.8 mi journey to San Francisco (SFO) from San Francisco’s city center.

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

    For as low as £207, Delta can have you in Washington, D.C. Dulles Intl Airport from San Francisco in 8h 01m. San Francisco and Washington, D.C. Dulles Intl Airport are separated by a distance of 2412 mi.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Francisco to Washington, D.C. Dulles Intl Airport on time: ITA Airways (100%), Brussels Airlines (91%), Asiana Airlines (90%).

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

    Looking at all options, your cheapest flight can be booked for £432. While the most popular route (San Francisco - Washington, D.C. Dulles Intl) can be booked for £137 on average, our data indicates £485 when flying from San Francisco to Washington, D.C. Dulles Intl Airport.

  • 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 holiday 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, May is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of £88). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of £207). 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

Travelling 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
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
Alexandria
College Park

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 Reagan-National flights
Los Angeles to Dulles Intl flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from San Francisco to Dulles Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Dulles Intl from San Francisco today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Dulles Intl?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from San Francisco to Dulles Intl for you. Better yet — we are completely free to use.

Can Cheapflights find flights from San Francisco to Dulles Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from San Francisco to Dulles Intl flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from San Francisco to Dulles Intl become cheaper?

Yes, Cheapflights offers price alerts on San Francisco to Dulles Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.