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Cheap flights from Washington, D.C. to San Francisco from £113

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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SFO
18 Oct — 25 Oct1
1 adult
1 adult, Economy

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 Monday or Wednesday and return on a Wednesday

Cheap 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 September 2025.

Round-trip from

£205

One-way from

£113

Popular in

December

Cheapest in

February

Average price

£305

Good one-way deal

£209 or less
Alaska Airlines
  • Alaska Airlines
  • 3/11-5/11
  • 3 total stops
  • 30h 50m total
  • Washington, D.C. to San Francisco
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Alaska Airlines
  • Alaska Airlines
  • 14/10
  • 1 total stop
  • 18h 24m total
  • Washington, D.C. to San Francisco
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Highest demand for flights based on searches. 6% potential increase in price (£15 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£4 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. (WAS) to San Francisco.
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Find flight deals from Washington, D.C. to San Francisco

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 September 2025.

Mon 3/1117:40IAD - SFO
2 stops18h 13mAlaska Airlines
Wed 5/1114:46SFO - IAD
1 stop12h 37mAlaska Airlines
Deal found 16/9£205
Tue 21/1007:40IAD - SFO
1 stop10h 20mSouthwest
Thu 23/1005:00SFO - IAD
1 stop11h 00mSouthwest
Deal found 16/9£207
Thu 6/1108:00DCA - SFO
1 stop9h 20mSouthwest
Tue 11/1105:50SFO - DCA
2 stops9h 55mSouthwest
Deal found 16/9£207
Wed 10/1207:40IAD - SFO
2 stops9h 45mSouthwest
Sat 13/1205:15SFO - IAD
1 stop7h 00mSouthwest
Deal found 16/9£209
Mon 10/1106:03IAD - SFO
1 stop10h 26mDelta
Mon 10/1100:45SFO - IAD
1 stop7h 22mDelta
Deal found 17/9£210
Tue 28/1018:58DCA - SFO
Nonstop6h 13mAlaska Airlines
Thu 30/1006:00SFO - DCA
1 stop11h 00mAlaska Airlines
Deal found 16/9£210
Wed 3/1216:40DCA - SFO
2 stops8h 50mSouthwest
Sun 7/1206:10SFO - DCA
1 stop11h 45mSouthwest
Deal found 16/9£211
Mon 10/1106:03IAD - SFO
1 stop10h 26mDelta
Wed 19/1106:00SFO - IAD
1 stop9h 19mDelta
Deal found 17/9£212
Tue 7/1007:00DCA - SFO
Nonstop5h 49mUnited Airlines
Wed 22/1000:43SFO - DCA
1 stop7h 51mUnited Airlines
Deal found 16/9£212
Wed 29/1006:10DCA - SFO
2 stops10h 10mSouthwest
Sun 2/1110:10SFO - DCA
1 stop10h 45mSouthwest
Deal found 16/9£213
Fri 24/1019:00DCA - SFO
1 stop7h 59mUnited Airlines
Sat 25/1000:45SFO - DCA
1 stop7h 44mUnited Airlines
Deal found 17/9£214
Sat 8/1116:55DCA - SFO
1 stop10h 04mJetBlue
Sun 16/1110:35SFO - DCA
1 stop9h 23mJetBlue
Deal found 16/9£215

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 September 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

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Mon 26/1

08:00-13:35

1 stop8h 35m

San Francisco

Tue 3/2

10:00-23:15

2 stops10h 15m

£207

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Sat 1/11

18:58-22:11

Nonstop6h 13m

San Francisco

Tue 4/11

08:00-21:59

1 stop10h 59m

£210

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Fri 9/1

08:25-14:07

1 stop8h 42m

San Francisco

Fri 16/1

13:39-21:52

Nonstop5h 13m

£210

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Thu 20/11

08:30-11:29

Nonstop5h 59m

San Francisco

Tue 16/12

06:07-14:13

Nonstop5h 06m

£212

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Thu 15/1

13:10-19:15

1 stop9h 05m

San Francisco

Thu 22/1

10:40-22:57

1 stop9h 17m

£215

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Thu 5/3

06:05-13:39

1 stop10h 34m

San Francisco

Tue 10/3

23:59-12:59

1 stop10h 00m

£215

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Fri 12/12

08:59-14:15

1 stop8h 16m

San Francisco

Sun 14/12

08:09-21:02

1 stop9h 53m

£217

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Thu 30/10

06:18-10:53

1 stop7h 35m

San Francisco

Mon 3/11

11:25-23:00

1 stop8h 35m

£218

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Sun 11/1

18:35-21:41

Nonstop6h 06m

San Francisco

Sun 18/1

09:15-17:32

Nonstop5h 17m

£218

Washington, D.C.San Francisco

IAD - SFO

IADSFO

Washington, D.C. Dulles Intl

Tue 14/10

15:00-17:50

Nonstop5h 50m

San Francisco

Fri 17/10

23:56-08:15

Nonstop5h 19m

£218

Flights are sorted by cheapest return flights first.

Deals found on 17/9

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 September 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, February is the cheapest month in which you can book a flight from Washington, D.C. to San Francisco (average of £538). Flying from Washington, D.C. 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 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 September 2025.

It’s typically best to fly out from Washington, D.C. to San Francisco at midday. Doing so could potentially save you 56% on the flight price compared to flying in the afternoon, which is usually more expensive.

Weekly flight availability from Washington, D.C. to San Francisco

Explore weekly flight availability from Washington, D.C. to San Francisco. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 18 September 2025.

The most flights from WAS to SFO are scheduled on a Monday (39 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 on average).

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 34 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 13m. 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 cheapest airlines to fly from Washington, D.C. to San Francisco one-way?

    One-way options have recently been found by users for as low as £116 on United Airlines. Other airlines that offer cheap prices include Alaska Airlines from £116 and Southwest from £124 one-way.

  • 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 Washington, D.C. Reagan-National - San Francisco, Baltimore/Washington - 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 Ethiopian Air (92%), Air China (91%) or Egyptair (85%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Washington, D.C. to San Francisco?

    Looking at all options, your cheapest flight can be booked for £204. While the most popular route (Washington, D.C. Reagan-National - San Francisco) can be booked for £350 on average, our data indicates £209 when flying from Washington, D.C. to San Francisco.

  • 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, February is the cheapest month in which you can book a flight from Washington, D.C. to San Francisco (average of £538). Flying from Washington, D.C. 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

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Newark
South San Francisco
Bodega Bay
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.
Dulles Intl to Los Angeles flights
Reagan-National to Los Angeles flights
Reagan-National to San Francisco flights
Dulles Intl to San Francisco flights

Fly with Cheapflights

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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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