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Cheap flights from Washington, D.C. Dulles Intl Airport to San Francisco from £105

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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SFO
3 Jan — 10 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to San Francisco are usually found in May or July, booked 72 days in advance, depart on a Monday or Tuesday and return on a Monday

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 4 December 2025.

Tue 23/1222:05IAD - SFO
Nonstop6h 12mUnited Airlines
Thu 1/106:45SFO - IAD
Nonstop5h 10mUnited Airlines
Deal found 2/12£280
Wed 24/1216:40IAD - SFO
1 stop8h 10mSouthwest
Wed 14/105:05SFO - IAD
1 stop8h 45mSouthwest
Deal found 2/12£304
Fri 26/1208:30IAD - SFO
Nonstop5h 59mUnited Airlines
Tue 30/1223:06SFO - IAD
Nonstop5h 14mUnited Airlines
Deal found 2/12£306
Wed 24/1222:05IAD - SFO
Nonstop6h 12mUnited Airlines
Thu 1/106:45SFO - IAD
Nonstop5h 10mUnited Airlines
Deal found 3/12£311
Thu 18/1213:50IAD - SFO
1 stop7h 25mSouthwest
Tue 6/105:05SFO - IAD
1 stop8h 45mSouthwest
Deal found 3/12£312
Wed 17/1208:35IAD - SFO
Nonstop5h 55mUnited Airlines
Wed 24/1222:35SFO - IAD
Nonstop5h 12mUnited Airlines
Deal found 3/12£314
Wed 24/1216:40IAD - SFO
1 stop8h 10mSouthwest
Tue 6/105:05SFO - IAD
1 stop8h 45mSouthwest
Deal found 1/12£315
Wed 17/1215:38IAD - SFO
1 stop8h 21mDelta
Fri 9/110:35SFO - IAD
1 stop9h 35mDelta
Deal found 3/12£317
Thu 25/1207:40IAD - SFO
1 stop13h 55mSouthwest
Tue 6/105:05SFO - IAD
1 stop8h 45mSouthwest
Deal found 2/12£320

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 4 December 2025.

Round-trip from

£207

One-way from

£105

Popular in

December

Cheapest in

May

Average price

£397

Good one-way deal

£215 or less
Southwest
  • Southwest
  • 7/1-12/1
  • 3 total stops
  • 19h 35m total
  • Washington, D.C. to San Francisco
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 6/1
  • 2 total stops
  • 17h 18m total
  • Washington, D.C. to San Francisco
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£13 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 December 2025
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to San Francisco.
Search Deals

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 4 December 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

Wed 25/2

09:05-21:20

2 stops15h 15m

San Francisco

Fri 27/2

10:55-23:10

2 stops9h 15m

£211

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Thu 22/1

12:35-15:35

Nonstop6h 00m

San Francisco

Mon 26/1

23:20-07:35

Nonstop5h 15m

£223

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Fri 6/2

17:26-22:47

1 stop8h 21m

San Francisco

Mon 9/2

13:10-16:26

2 stops24h 16m

£227

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Sat 28/2

16:30-22:05

1 stop8h 35m

San Francisco

Sat 7/3

10:00-00:25

2 stops11h 25m

£235

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Fri 13/3

12:12-19:07

1 stop9h 55m

San Francisco

Tue 17/3

09:51-23:49

2 stops10h 58m

£238

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Wed 25/3

07:00-14:05

1 stop10h 05m

San Francisco

Wed 1/4

12:30-23:35

1 stop8h 05m

£238

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Thu 5/2

17:26-08:47

2 stops18h 21m

San Francisco

Mon 9/2

13:10-16:26

2 stops24h 16m

£248

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Mon 23/2

05:30-13:10

2 stops10h 40m

San Francisco

Fri 27/2

10:55-23:10

2 stops9h 15m

£257

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Wed 1/4

22:10-01:16

Nonstop6h 06m

San Francisco

Wed 8/4

22:55-07:25

Nonstop5h 30m

£269

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Tue 14/4

22:10-01:16

Nonstop6h 06m

San Francisco

Sun 19/4

21:00-05:26

Nonstop5h 26m

£269

Flights are sorted by cheapest return flights first.

Deals found on 3/12

Showing 1-10 of 23 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 28 November 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 72 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Francisco (average of £141). Flying from Washington, D.C. Dulles Intl Airport to San Francisco in June 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 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 4 December 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 65% 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 30 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 6h. Fly via Southwest, United Airlines, or Alaska 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 Egyptair (90%), Ethiopian Air (88%) or Air China (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 £209. On average you can expect to pay £215. The most popular route, (Washington, D.C. Dulles Intl - San Francisco), can usually be booked for £223.

  • 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Francisco (average of £141). Flying from Washington, D.C. Dulles Intl Airport to San Francisco in June 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 San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
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Bodega Bay
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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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