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Cheap flights from Washington, D.C. to San Francisco from £108

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 28/1. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SFO
17 Jan — 24 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Washington, D.C. to San Francisco are usually found in February or May, booked 74 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Washington, D.C. to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Washington, D.C. to San Francisco
Explore the most affordable flight options available from Washington, D.C. to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2025.

Wed 31/1218:01IAD - SFO
Nonstop6h 19mUnited Airlines
Mon 19/122:35SFO - IAD
Nonstop5h 12mUnited Airlines
Deal found 16/12£327
Wed 31/1216:17DCA - SFO
1 stop8h 23mUnited Airlines
Sun 18/100:43SFO - DCA
1 stop7h 46mUnited Airlines
Deal found 16/12£338
Wed 17/1207:00BWI - SFO
1 stop10h 03mAlaska Airlines
Tue 20/118:18SFO - BWI
1 stop20h 56mAlaska Airlines
Deal found 16/12£349
Thu 25/1207:05IAD - SFO
2 stops18h 45mDelta
Tue 6/105:45SFO - IAD
1 stop8h 01mDelta
Deal found 16/12£355
Sat 20/1208:00BWI - SFO
1 stop10h 02mUnited Airlines
Wed 7/123:13SFO - BWI
Nonstop5h 19mUnited Airlines
Deal found 17/12£358
Wed 17/1219:16BWI - SFO
1 stop17h 17mAlaska Airlines
Fri 23/107:00SFO - BWI
1 stop8h 14mAlaska Airlines
Deal found 16/12£365
Tue 23/1206:00BWI - SFO
1 stop8h 01mDelta
Wed 7/111:46SFO - BWI
1 stop8h 51mDelta
Deal found 17/12£366
Wed 17/1209:00BWI - SFO
Nonstop6h 13mUnited Airlines
Mon 19/100:43SFO - BWI
1 stop7h 37mUnited Airlines
Deal found 16/12£373
Sun 21/1216:45DCA - SFO
1 stop11h 07mJetBlue
Fri 9/120:29SFO - DCA
1 stop10h 22mJetBlue
Deal found 17/12£375
Tue 23/1206:00BWI - SFO
1 stop8h 01mDelta
Tue 6/105:45SFO - BWI
1 stop7h 53mDelta
Deal found 16/12£381
Wed 31/1206:30BWI - SFO
Nonstop6h 12mUnited Airlines
Mon 19/123:13SFO - BWI
Nonstop5h 19mUnited Airlines
Deal found 16/12£384
Wed 17/1207:00BWI - SFO
1 stop11h 05mSouthwest
Tue 20/115:15SFO - BWI
2 stops11h 30mSouthwest
Deal found 16/12£384

Find flight deals from Washington, D.C. to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 18 December 2025.

Round-trip from

£205

One-way from

£108

Popular in

December

Cheapest in

February

Average price

£371

Good round-trip deal

£222 or less
JetBlue
  • JetBlue
  • 31/1-7/2
  • 3 total stops
  • 24h 21m total
  • Washington, D.C. to San Francisco
Search Deals
Southwest
  • Southwest
  • 4/3
  • 2 total stops
  • 15h 10m total
  • Washington, D.C. to San Francisco
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£16 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to San Francisco.
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Washington, D.C. 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 18 December 2025.
Use the filters below to find and compare flights from Washington, D.C. to San Francisco that are best for you.

Fly from

Washington, D.C.

Fly to

San Francisco

Route

Depart

Return

Price

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Sat 7/2

07:30-13:43

1 stop9h 13m

San Francisco

Wed 11/2

10:30-23:10

1 stop9h 40m

£207

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Sat 24/1

17:26-22:47

1 stop8h 21m

San Francisco

Wed 28/1

07:00-17:04

1 stop7h 04m

£207

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Wed 14/1

07:00-10:16

Nonstop6h 16m

San Francisco

Sun 18/1

08:35-16:52

Nonstop5h 17m

£207

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Tue 3/2

17:01-23:03

1 stop9h 02m

San Francisco

Tue 10/2

09:00-21:59

1 stop9h 59m

£207

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Mon 13/4

10:40-17:43

1 stop10h 03m

San Francisco

Thu 16/4

10:45-22:57

1 stop9h 12m

£215

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Wed 28/1

12:40-17:43

1 stop8h 03m

San Francisco

Mon 2/2

10:30-23:10

1 stop9h 40m

£218

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Mon 9/2

07:30-13:43

1 stop9h 13m

San Francisco

Sat 28/2

14:05-00:24

1 stop7h 19m

£218

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Tue 27/1

17:26-22:47

1 stop8h 21m

San Francisco

Sun 1/2

07:00-17:04

1 stop7h 04m

£221

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Thu 19/2

06:20-09:35

Nonstop6h 15m

San Francisco

Sun 22/2

22:40-06:51

Nonstop5h 11m

£222

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Thu 15/1

19:45-22:57

Nonstop6h 12m

San Francisco

Thu 22/1

12:55-20:54

Nonstop4h 59m

£222

Flights are sorted by cheapest return flights first.

Deals found on 17/12

Showing 1-10 of 60 results
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Best time to book a flight from Washington, D.C. to San Francisco

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

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

Use this chart to determine the optimal time to book a return flight from Washington, D.C. to San Francisco. Price data was last updated on 12 December 2025.

Booking 74 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to San Francisco (average of £76). Flying from Washington, D.C. to San Francisco in November is currently the most expensive (average of £146). 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 WAS to SFO?

Find hourly flight availability from Washington, D.C. 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 18 December 2025.

It’s typically best to fly out from Washington, D.C. to San Francisco in the morning. Doing so could potentially save you 66% 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 16% of weekly flights between Washington, D.C. and San Francisco have experienced delays in the past year, with the average delay time being 179 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?

Tuesday tends to have the lowest number of delays on this route, whereas Thursday 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, United Airlines have had the lowest number of delays on this route, with just 14% of flights being delayed.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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.?

    Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from Washington, D.C.. Booking flights from Washington, D.C. to San Francisco (SFO) should be relatively easy as there are 12 daily inbound flights from Washington, D.C. from 0 different airlines.

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

    Departing from Washington, D.C. to San Francisco will take you 6h 16m. Washington, D.C. and San Francisco are separated by a distance of 2435 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from Washington, D.C. to San Francisco?

    When deciding which route to take from Washington, D.C. to San Francisco consider Baltimore/Washington - San Francisco, Washington, D.C. Reagan-National - San Francisco or Washington, D.C. Dulles Intl - San Francisco as they are the most popular.

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

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. to San Francisco consider choosing ITA Airways (100%), Egyptair (87%) or Austrian Airlines (82%) as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from Washington, D.C. to San Francisco that include hotel bookings?

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

  • How can I find direct flights from Washington, D.C. to San Francisco?

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

  • Can I find deals for business class flights from Washington, D.C. to San Francisco?

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

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to San Francisco (average of £76). Flying from Washington, D.C. to San Francisco in November is currently the most expensive (average of £146). 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
Newark
San Bruno
South San Francisco
Bodega Bay
Sunnyvale
Pacific Grove

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Alternative routes for Washington, D.C. to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Los Angeles flights
Dulles Intl to Los Angeles flights
Reagan-National to San Francisco flights
Dulles Intl to San Francisco flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Washington, D.C. to San Francisco?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Washington, D.C. to San Francisco. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. 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 Washington, D.C..

Can Cheapflights find flights from Washington, D.C. to San Francisco with no change fees?

Yes! Cheapflights helps users easily find flights from Washington, D.C. to San Francisco with no change fees.

Can Cheapflights notify me if prices for flights from Washington, D.C. to San Francisco become cheaper?

Yes! Start tracking prices for Washington, D.C. to San Francisco flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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