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Cheap flights from Washington, D.C. Dulles Intl Airport to San Francisco from £116

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 14/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SFO
16 Oct — 23 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to San Francisco are usually found in May or July, booked 40 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 16 September 2025.

Round-trip from

£208

One-way from

£116

Popular in

December

Cheapest in

May

Average price

£334

Good one-way deal

£210 or less
Southwest
  • Southwest
  • 5/12-9/12
  • 3 total stops
  • 21h 45m total
  • Washington, D.C. to San Francisco
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Alaska Airlines
  • Alaska Airlines
  • 14/11
  • 2 total stops
  • 18h 13m total
  • Washington, D.C. to San Francisco
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£27 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 September 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 16 September 2025.

Wed 22/1007:40IAD - SFO
1 stop10h 20mSouthwest
Sun 26/1020:30SFO - IAD
1 stop13h 30mSouthwest
Deal found 14/9£208
Mon 10/1118:59IAD - SFO
1 stop8h 13mDelta
Tue 11/1106:00SFO - IAD
1 stop8h 04mDelta
Deal found 15/9£211
Tue 4/1107:40IAD - SFO
2 stops9h 45mSouthwest
Thu 6/1105:30SFO - IAD
1 stop10h 30mSouthwest
Deal found 15/9£212
Thu 6/1117:40IAD - SFO
1 stop9h 06mAlaska Airlines
Fri 14/1107:00SFO - IAD
1 stop7h 13mAlaska Airlines
Deal found 15/9£218
Fri 24/1007:35IAD - SFO
1 stop11h 30mDelta
Sun 26/1000:35SFO - IAD
1 stop7h 51mDelta
Deal found 15/9£219
Wed 19/1107:40IAD - SFO
2 stops13h 35mSouthwest
Wed 26/1108:55SFO - IAD
1 stop7h 15mSouthwest
Deal found 16/9£222
Wed 5/1107:43IAD - SFO
1 stop9h 07mAlaska Airlines
Tue 18/1115:28SFO - IAD
2 stops11h 55mAlaska Airlines
Deal found 15/9£224
Wed 15/1015:00IAD - SFO
Nonstop5h 50mUnited Airlines
Sat 18/1008:25SFO - IAD
Nonstop5h 00mUnited Airlines
Deal found 14/9£225
Sat 8/1116:10IAD - SFO
Nonstop6h 10mUnited Airlines
Tue 25/1113:25SFO - IAD
Nonstop5h 00mUnited Airlines
Deal found 15/9£226
Fri 7/1106:05IAD - SFO
1 stop7h 28mDelta
Mon 10/1100:45SFO - IAD
1 stop7h 22mDelta
Deal found 16/9£227
Tue 7/1008:30IAD - SFO
Nonstop5h 39mUnited Airlines
Mon 13/1023:56SFO - IAD
Nonstop5h 19mUnited Airlines
Deal found 15/9£229
Thu 30/1017:40IAD - SFO
1 stop9h 06mHawaiian Airlines
Thu 6/1107:00SFO - IAD
1 stop7h 13mHawaiian Airlines
Deal found 14/9£230

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 16 September 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 6/11

07:35-16:05

1 stop11h 30m

San Francisco

Sat 8/11

00:45-10:55

1 stop7h 10m

£219

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Wed 29/10

07:35-16:05

1 stop11h 30m

San Francisco

Tue 4/11

00:35-13:36

1 stop10h 01m

£227

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Thu 18/12

18:29-00:27

1 stop8h 58m

San Francisco

Mon 5/1

17:42-06:13

1 stop9h 31m

£247

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Tue 14/10

17:30-20:08

Nonstop5h 38m

San Francisco

Tue 28/10

22:45-06:55

Nonstop5h 10m

£248

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Sat 14/2

06:15-13:25

1 stop10h 10m

San Francisco

Mon 23/2

22:45-10:02

1 stop8h 17m

£248

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Tue 11/11

06:00-12:30

1 stop9h 30m

San Francisco

Sat 15/11

00:45-11:07

1 stop7h 22m

£255

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Sat 1/11

06:40-19:00

2 stops15h 20m

San Francisco

Sat 8/11

05:15-15:15

1 stop7h 00m

£256

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Fri 2/1

18:05-23:55

1 stop8h 50m

San Francisco

Mon 5/1

13:00-23:30

1 stop7h 30m

£263

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Thu 4/12

06:30-09:36

Nonstop6h 06m

San Francisco

Tue 9/12

21:20-05:27

Nonstop5h 07m

£263

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Mon 16/2

13:00-19:50

1 stop9h 50m

San Francisco

Mon 23/2

21:30-09:11

1 stop8h 41m

£263

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 22 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 12 September 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 40 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 16 September 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 27 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 7h 49m. Fly via Alaska Airlines or Delta to get the fastest option. The distance from Washington, D.C. Dulles Intl Airport to San Francisco is about 2412 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Consider Ethiopian Air (93%), Air China (91%) or Egyptair (85%) 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 £205. On average you can expect to pay £210. The most popular route, (Washington, D.C. Dulles Intl - San Francisco), can usually be booked for £204.

  • 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

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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.

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

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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