Cheap flights from Washington, D.C. Dulles Intl Airport to San Francisco from £118
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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to San Francisco are usually found in May or July, booked 51 days in advance, depart on a Monday or Wednesday and return on a Wednesday
Find flight deals from Dulles Intl to San Francisco
Cheapest flights from Dulles Intl to San FranciscoExplore 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 October 2025.
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 October 2025.
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 17 October 2025.
Cheapflights Fare Finder
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
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Fri 7/11
16:10-19:20
Nonstop6h 10m
San Francisco
Mon 10/11
08:25-16:27
Nonstop5h 02m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Tue 4/11
12:27-17:22
1 stop7h 55m
San Francisco
Thu 11/12
06:00-17:00
1 stop8h 00m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Wed 17/12
07:01-12:36
1 stop8h 35m
San Francisco
Fri 9/1
06:00-16:30
1 stop7h 30m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Wed 17/12
07:40-15:05
2 stops10h 25m
San Francisco
Sat 17/1
12:30-22:10
1 stop6h 40m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Mon 12/1
17:26-23:48
1 stop9h 22m
San Francisco
Thu 15/1
07:00-17:04
1 stop7h 04m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Thu 13/11
06:00-10:44
1 stop7h 44m
San Francisco
Wed 19/11
00:30-11:07
1 stop7h 37m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Tue 4/11
16:40-21:50
1 stop8h 10m
San Francisco
Thu 11/12
07:45-22:00
2 stops11h 15m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Thu 15/1
17:26-23:48
1 stop9h 22m
San Francisco
Mon 19/1
14:30-17:04
2 stops23h 34m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Fri 12/12
06:00-10:46
1 stop7h 46m
San Francisco
Wed 7/1
06:00-16:30
1 stop7h 30m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Fri 7/11
17:40-23:46
1 stop9h 06m
San Francisco
Thu 13/11
07:00-17:13
1 stop7h 13m
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.
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 51 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 £140). Flying from Washington, D.C. Dulles Intl Airport to San Francisco in December is currently the most expensive (average of £205). 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?
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 46% on the flight price compared to flying in the evening, which is usually more expensive.
How often are flights from Washington, D.C. to San Francisco delayed?
About 17% of weekly flights between Washington, D.C. and San Francisco have experienced delays in the past year, with the average delay time being 172 minutes.
What is the most punctual flight time for Washington, D.C. to San Francisco flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Wednesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Washington, D.C. to San Francisco flights?
Over the past year, Delta have had the lowest number of delays on this route, with no flights being classified as delayed.
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.
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Alternative routes for Dulles Intl to San Francisco
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How does Cheapflights help users find flights from Dulles Intl to San Francisco?
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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.
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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.