WAS - SFO

£101 Find Cheap Flights from Washington, D.C. to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to San Francisco departing on 5/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to San Francisco, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 25% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest return fare
£186
Overall average: £317
United Airlines
Thu 19/3Wed 25/3
IAD - SFO • Direct
Cheapest one-way flight
£101
Typical prices: £136-£361
Delta
Sun 5/4
IAD - SFO • 1 stop
Our travellers' advice
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
Use AeroTrain at Dulles for easy terminal access.
Bring your own device on Alaska; no seatback screens.
Expert advice
Expert advice
+1
+1
Expert advice
Expert advice
+1
Top routes
DCA
-
SFO
Cheapest • 62% average savings
DCA
-
SFO
Most popular
Insights
Insights
Insights
Insights
When to book
4 weeks
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 52% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 11% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Washington, D.C. to San Francisco (WAS-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Washington, D.C. to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Washington, D.C. to San Francisco

Thu, 19 Mar - Wed, 25 Mar
United Airlines Logo
06:15 - 09:30
IAD
-
SFO
6h 15mdirect
United Airlines Logo
16:55 - 01:03
SFO
-
IAD
5h 08mdirect
£186United Airlines
Thu, 26 Feb - Thu, 5 Mar
United Airlines Logo
22:10 - 01:28
IAD
-
SFO
6h 18mdirect
United Airlines Logo
23:20 - 07:31
SFO
-
IAD
5h 11mdirect
£186United Airlines
Sat, 21 Feb - Wed, 4 Mar
Alaska Airlines Logo
18:59 - 22:19
DCA
-
SFO
6h 20mdirect
Alaska Airlines Logo
09:46 - 17:59
SFO
-
DCA
5h 13mdirect
£186Alaska Airlines
Sat, 28 Feb - Thu, 5 Mar
United Airlines Logo
17:50 - 21:19
DCA
-
SFO
6h 29mdirect
United Airlines Logo
13:39 - 21:45
SFO
-
DCA
5h 06mdirect
£187United Airlines
Thu, 5 Mar - Tue, 10 Mar
JetBlue Logo
06:00 - 12:57
DCA
-
SFO
9h 57m
1 stop
JetBlue Logo
20:44 - 08:03
SFO
-
DCA
8h 19m
1 stop
£189JetBlue
Tue, 3 Mar - Thu, 5 Mar
Southwest Logo
09:05 - 16:55
IAD
-
SFO
10h 50m
2 stops
Southwest Logo
05:30 - 16:05
SFO
-
IAD
7h 35m
1 stop
£190Southwest
Fri, 20 Feb - Wed, 25 Feb
Southwest Logo
10:35 - 17:55
DCA
-
SFO
10h 20m
1 stop
Southwest Logo
06:05 - 20:15
SFO
-
DCA
11h 10m
2 stops
£190Southwest
Sat, 21 Feb - Fri, 27 Feb
Delta Logo
06:00 - 10:59
IAD
-
SFO
7h 59m
1 stop
Delta Logo
22:50 - 09:54
SFO
-
IAD
8h 04m
1 stop
£194Delta
Thu, 19 Feb - Tue, 24 Feb
Delta Logo
16:44 - 22:41
DCA
-
SFO
8h 57m
1 stop
Delta Logo
22:45 - 08:53
SFO
-
DCA
7h 08m
1 stop
£194Delta
Wed, 18 Feb - Wed, 25 Feb
Alaska Airlines Logo
18:46 - 23:59
BWI
-
SFO
32h 13m
1 stop
Alaska Airlines Logo
11:34 - 17:46
SFO
-
BWI
27h 12m
1 stop
£228Alaska Airlines
Booking Insights

KAYAK's insights & trends for Washington, D.C. to San Francisco flights

Get data-powered insights and trends into flights from Washington, D.C. to San Francisco to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Washington, D.C. to San Francisco?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. to San Francisco departing in March.

What is the cheapest Washington, D.C. to San Francisco flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Washington, D.C. to San Francisco costs £212 on the route between Washington, D.C. Reagan-National Airport (DCA) and San Francisco (SFO). Over the past month, this route was, on average, 62% cheaper than other Washington, D.C.-San Francisco routes. It is also the most popular route.

What is the cheapest month to fly from Washington, D.C. to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to San Francisco is February, where tickets cost £273 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is £347 and £331 respectively.

Can I save money by flying with a stopover from Washington, D.C. to San Francisco?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at £255 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. to San Francisco, you should book around 4 weeks before departure, which saves you about 52% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Expert advice

Expert advice for your flight from Washington, D.C. to San Francisco

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SFO

Blane Bachelor is a journalist and editor specialising in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favourite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history.

Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or out at sea, likely en route to Antarctica or the Arctic.

Good to know - Cheap tickets from Washington, D.C. to San Francisco

Low seasonSeptember
Cheapest flight£101
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly and prices are also 6% lower on average.
Flight from Washington Dulles Airport to San Francisco

When to book flights from Washington, D.C. to San Francisco

Are your dates flexible? Find out the best times to travel from Washington, D.C. to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from Washington, D.C. to San Francisco: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Washington, D.C. to San Francisco 
Verified travelerFlew with Alaska Airlines
DCA
-
SFO
Jan 2025
Reserve your plane seat & bring something to eat in the plane.
PhallyFlew with Alaska Airlines
IAD
-
SFO
Oct 2024
Don't take too much stuff. Make sure to have the necessary documents or boarding pass ready.
NoamFlew with Alaska Airlines
IAD
-
SFO
Aug 2024
Flying to the Ronald Reagan airport is closer and faster to D.C. than the Dulles airport.
DeniseFlew with Alaska Airlines
IAD
-
SFO
May 2024
Bring your own device. No screens on the seatbacks.

FAQs for booking flights from Washington, D.C. to San Francisco

  • What is the cheapest flight from Washington, D.C. to San Francisco?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to San Francisco was £101 for a one-way ticket and £186 for a return.

  • Which airports will I be using when flying from Washington, D.C. to San Francisco?

    Washington, D.C. is served by 2 major airports and there is only 1 main airport in San Francisco. You will leave Washington, D.C. from one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be arriving at San Francisco.

  • Which airlines offer Wi-Fi service onboard planes from Washington, D.C. to San Francisco?

    Alaska Airlines, and JetBlue offer inflight Wi-Fi service on the Washington, D.C. to San Francisco flight route.

  • Which aircraft models fly most regularly from Washington, D.C. to San Francisco?

    The Boeing 737 MAX 9 is the aircraft model that flies most regularly on the Washington, D.C. to San Francisco flight route.

  • On which days can I fly direct from Washington, D.C. to San Francisco?

    There are direct flights from Washington, D.C. to San Francisco on a daily basis.

  • How does KAYAK find such low prices on flights from Washington, D.C. to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to San Francisco with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. to San Francisco

  • Looking for a cheap flight from Washington, D.C. to San Francisco? 25% of our users found flights on this route for £557 or less one-way and £215 or less round-trip.

Prefer to fly direct from Washington, D.C. to San Francisco?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Washington, D.C. to San Francisco.
Find which airlines fly direct from Washington, D.C. to San Francisco Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. to San Francisco

Monday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

Tuesday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

Wednesday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

Thursday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

Friday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

Saturday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

Sunday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

See more direct flights

Direct returns

San Francisco to Washington, D.C.

Monday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

Tuesday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

Wednesday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

Thursday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

Friday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

Saturday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

Sunday

Alaska Airlines, United Airlines

Alaska Airlines, United Airlines

See more direct flights

Everything you need to know for your flight from Washington, D.C. to San Francisco

Information on your arrival and departure airports