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Cheap flights from Washington, D.C. Dulles Intl Airport to San Francisco from £160

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SFO
16 Sep — 23 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dulles Intl to San Francisco

Enter your travel dates to find the best prices.

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 17 August 2026.

Wed 2/1217:25 -
1 stop7h 57m
Sat 12/1208:20 -
1 stop7h 41m
Deal found 14/8£312
Fri 30/1011:58 -
1 stop8h 09m
Sat 31/1018:12 -
1 stop15h 34m
Deal found 16/8£314
Wed 16/919:47 -
1 stop15h 59m
Tue 22/912:22 -
2 stops14h 18m
Deal found 17/8£316
Sat 5/1217:25 -
1 stop7h 57m
Sat 12/1208:20 -
1 stop7h 41m
Deal found 13/8£317
Wed 9/907:00 -
2 stops14h 23m
Mon 21/910:06 -
2 stops16h 34m
Deal found 16/8£320
Sat 17/1007:02 -
2 stops13h 42m
Tue 20/1007:03 -
1 stop7h 47m
Deal found 12/8£321
Sat 12/907:00 -
2 stops14h 23m
Wed 16/910:32 -
2 stops16h 08m
Deal found 13/8£323
Tue 10/1118:46 -
1 stop17h 06m
Fri 13/1117:00 -
1 stop21h 40m
Deal found 14/8£325
Mon 12/1005:01 -
1 stop7h 50m
Thu 15/1016:07 -
1 stop10h 25m
Deal found 12/8£327
Wed 28/1007:02 -
2 stops16h 31m
Mon 2/1119:19 -
2 stops19h 21m
Deal found 13/8£328
Wed 9/907:00 -
2 stops14h 23m
Fri 11/915:41 -
2 stops10h 59m
Deal found 14/8£329

Find 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 17 August 2026.

Round-trip from

£312

One-way from

£160

Popular in

June

Cheapest in

February

Average price

£402
Alaska Airlines
  • Alaska Airlines
  • 2/12-12/12
  • 2 total stops
  • 15h 38m total
  • Washington, D.C. to San Francisco
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 17/10
  • 2 total stops
  • 13h 42m total
  • Washington, D.C. to San Francisco
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£36 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
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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 17 August 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.San Francisco

IAD Washington, D.C. Dulles Intl - SFO San Francisco

IADSFO

Washington, D.C. Dulles Intl

Wed 23/9

19:47-08:46

1 stop15h 59m

San Francisco

Tue 29/9

12:22-05:40

2 stops14h 18m

£316

Washington, D.C.San Francisco

IAD Washington, D.C. Dulles Intl - SFO San Francisco

IADSFO

Washington, D.C. Dulles Intl

Fri 15/1

17:25-23:39

1 stop9h 14m

San Francisco

Sat 23/1

06:00-19:01

1 stop10h 01m

£332

Washington, D.C.San Francisco

IAD Washington, D.C. Dulles Intl - SFO San Francisco

IADSFO

Washington, D.C. Dulles Intl

Sun 15/11

08:15-11:22

Nonstop6h 07m

San Francisco

Mon 23/11

23:20-07:28

Nonstop5h 08m

£338

Washington, D.C.San Francisco

IAD Washington, D.C. Dulles Intl - SFO San Francisco

IADSFO

Washington, D.C. Dulles Intl

Wed 9/9

07:00-18:23

2 stops14h 23m

San Francisco

Fri 11/9

15:41-05:40

2 stops10h 59m

£349

Washington, D.C.San Francisco

IAD Washington, D.C. Dulles Intl - SFO San Francisco

IADSFO

Washington, D.C. Dulles Intl

Mon 5/10

07:02-18:50

2 stops14h 48m

San Francisco

Sat 10/10

07:03-23:59

2 stops13h 56m

£355

Washington, D.C.San Francisco

IAD Washington, D.C. Dulles Intl - SFO San Francisco

IADSFO

Washington, D.C. Dulles Intl

Mon 26/10

19:13-00:44

1 stop8h 31m

San Francisco

Thu 29/10

11:13-23:23

1 stop9h 10m

£360

Washington, D.C.San Francisco

IAD Washington, D.C. Dulles Intl - SFO San Francisco

IADSFO

Washington, D.C. Dulles Intl

Fri 18/12

22:10-01:16

Nonstop6h 06m

San Francisco

Mon 21/12

06:15-14:30

Nonstop5h 15m

£415

Washington, D.C.San Francisco

IAD Washington, D.C. Dulles Intl - SFO San Francisco

IADSFO

Washington, D.C. Dulles Intl

Thu 24/9

22:10-00:59

Nonstop5h 49m

San Francisco

Mon 28/9

23:10-07:31

Nonstop5h 21m

£419
Fastest return journey

Washington, D.C.San Francisco

IAD Washington, D.C. Dulles Intl - SFO San Francisco

IADSFO

Washington, D.C. Dulles Intl

Fri 2/10

22:10-00:59

Nonstop5h 49m

San Francisco

Sat 3/10

10:50-19:04

Nonstop5h 14m

£419

Washington, D.C.San Francisco

IAD Washington, D.C. Dulles Intl - SFO San Francisco

IADSFO

Washington, D.C. Dulles Intl

Wed 28/10

09:25-12:25

Nonstop6h 00m

San Francisco

Sat 31/10

21:28-05:35

Nonstop5h 07m

£419

Flights are sorted by cheapest return flights first.

Deals found on 14/8

Showing 1-10 of 22 resultsSorted by cheapest first
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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?

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 63 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 £275). Flying from Washington, D.C. Dulles Intl Airport to San Francisco in June is currently the most expensive (average of £442). 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 17 August 2026.

When flying from Washington, D.C. Dulles Intl Airport to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Washington, D.C. Dulles Intl Airport to San Francisco?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to San Francisco flights typically cost between £316 and £558 in December.
The cheapest return price found within the last 5 days was £312 on Alaska Airlines (2 Dec–12 Dec).

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 11.0 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 6h 09m. Fly via Alaska Airlines, United Airlines, or American Airlines 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 Air China (75%), Ethiopian Air (72%) or Air New Zealand (71%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to San Francisco.

  • 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 £275). Flying from Washington, D.C. Dulles Intl Airport to San Francisco in June is currently the most expensive (average of £442). 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
Santa Cruz
San Bruno
Roseville
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Sunnyvale
South San Francisco

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

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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