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Cheap flights from Washington, D.C. Dulles Intl Airport to San Francisco from £91

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 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SFO
24 Aug — 31 Aug1
1 adult

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to San Francisco are usually found in May or July, booked 31 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap flight deals from Dulles Intl to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to San Francisco (SFO). 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 19 August 2025.

Round-trip from

£197

One-way from

£91

Popular in

December

Cheapest in

May

Average price

£293

Good one-way deal

£211 or less
Delta
  • Delta
  • 22/9-23/9
  • 2 total stops
  • 15h 49m total
  • Washington, D.C. to San Francisco
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Frontier
  • Frontier
  • 18/11
  • 2 total stops
  • 16h 40m total
  • Washington, D.C. to San Francisco
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Highest demand for flights based on searches. 11% potential increase in price (£30 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to San Francisco.
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Find flight deals from Dulles Intl to San Francisco

Cheapest flights from Dulles Intl to San Francisco
Explore the most affordable flight options available from Dulles Intl to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2025.

Mon 22/917:25IAD - SFO
1 stop8h 16mDelta
Tue 23/900:45SFO - IAD
1 stop7h 33mDelta
Deal found 19/8£197
Sun 21/906:00IAD - SFO
1 stop7h 40mDelta
Sat 27/923:00SFO - IAD
1 stop6h 59mDelta
Deal found 19/8£198
Tue 9/906:00IAD - SFO
1 stop7h 30mDelta
Mon 15/900:45SFO - IAD
1 stop7h 33mDelta
Deal found 19/8£205
Sat 18/1017:10IAD - SFO
1 stop8h 25mDelta
Mon 20/1000:35SFO - IAD
1 stop7h 51mDelta
Deal found 18/8£212
Fri 31/1007:35IAD - SFO
1 stop11h 30mDelta
Mon 3/1100:35SFO - IAD
1 stop10h 02mDelta
Deal found 19/8£213
Sat 27/907:00IAD - SFO
2 stops12h 10mSouthwest
Tue 30/912:20SFO - IAD
1 stop6h 45mSouthwest
Deal found 17/8£216
Sat 25/1017:37IAD - SFO
1 stop8h 51mAmerican Airlines
Sat 1/1107:04SFO - IAD
1 stop9h 41mAmerican Airlines
Deal found 18/8£219
Sat 13/917:05IAD - SFO
1 stop7h 30mSouthwest
Sat 20/905:15SFO - IAD
1 stop6h 45mSouthwest
Deal found 19/8£219
Sun 2/1105:15IAD - SFO
1 stop9h 05mDelta
Wed 12/1100:40SFO - IAD
1 stop7h 49mDelta
Deal found 19/8£220
Fri 12/917:25IAD - SFO
1 stop8h 16mDelta
Sat 13/900:45SFO - IAD
1 stop7h 33mDelta
Deal found 18/8£221
Fri 26/917:25IAD - SFO
1 stop8h 16mDelta
Mon 29/900:45SFO - IAD
1 stop7h 33mDelta
Deal found 19/8£222

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dulles Intl to San Francisco 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 19 August 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San Francisco that are best for you.

Fly from

Dulles Intl

Fly to

San Francisco

Route

Depart

Return

Price

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Thu 25/9

12:35-18:48

1 stop9h 13m

San Francisco

Tue 30/9

05:50-16:07

1 stop7h 17m

£197

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Sat 20/9

12:35-18:48

1 stop9h 13m

San Francisco

Wed 24/9

06:00-18:22

1 stop9h 22m

£197

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Mon 22/9

17:25-22:41

1 stop8h 16m

San Francisco

Tue 23/9

00:45-11:18

1 stop7h 33m

£197

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Sat 20/9

06:15-13:45

1 stop10h 30m

San Francisco

Tue 23/9

06:00-18:22

1 stop9h 22m

£197

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Tue 30/9

07:20-14:26

1 stop10h 06m

San Francisco

Sat 11/10

05:55-16:29

1 stop7h 34m

£197

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Sun 21/9

06:00-10:40

1 stop7h 40m

San Francisco

Sat 27/9

07:00-17:36

1 stop7h 36m

£198

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Sun 21/9

06:00-10:40

1 stop7h 40m

San Francisco

Tue 23/9

12:12-23:38

1 stop8h 26m

£198

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Sun 16/11

20:36-16:55

2 stops23h 19m

£97

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Tue 28/10

16:50-22:45

1 stop8h 55m

£103

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Wed 22/10

06:05-10:33

1 stop7h 28m

£103

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Showing 1-10 of 15 results
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Best time to book a flight from Dulles Intl to San Francisco

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

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

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

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 31 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Francisco (average of £538). Flying from Washington, D.C. Dulles Intl Airport to San Francisco in July is currently the most expensive (average of £803). 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 IAD to SFO?

Find hourly flight availability from Dulles Intl to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 August 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to San Francisco in the morning. Doing so could potentially save you 47% on the flight price compared to flying in the afternoon, which is usually more expensive.

Related info for your journey

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

    Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Washington, D.C. Dulles Intl. On average, San Francisco has 24 inbound flights from Washington, D.C. Dulles Intl per day from 0 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

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

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to San Francisco in 9h 13m. Fly via Delta to get the fastest option. The distance from Washington, D.C. Dulles Intl Airport to San Francisco is about 2412 mi.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as £97. Users have also found prices from £103 and £103 on Southwest and Delta, respectively.

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

    Consider Ethiopian Air (92%), Air China (88%) or Egyptair (84%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to San Francisco.

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

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to San Francisco is £206. On average you can expect to pay £211. The most popular route, (Washington, D.C. Dulles Intl - San Francisco), can usually be booked for £183.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Francisco (average of £538). Flying from Washington, D.C. Dulles Intl Airport to San Francisco in July is currently the most expensive (average of £803). 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 San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
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Pacific Grove
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When you search for this flight from Dulles Intl to San Francisco, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Francisco from Dulles Intl.

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

Certainly. Search results for flights to San Francisco from Dulles Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Not ready to book yet? You can track prices for flights from Dulles Intl to San Francisco on Cheapflights with our Price Alert feature and get notified when better prices are available.

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