United's Economy Plus offers extra legroom, ideal for comfort on longer flights.
United's Polaris Lounges offer exclusive amenities like showers and dining for premium passengers.

Most accurate provider | eDreams 3 stars  | 
|---|---|
Most trusted provider | eDreams 3 stars  | 
Round-trip from | $248 (Kiwi.com)  | 
One-way from | $144 (Kiwi.com)  | 
Popular in | December | 
Cheapest in | February | 
Average price | $457 | 
Good round-trip deal | $355 or less | 
Good one-way deal | $189 or less | 
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.San Francisco
DCA - SFO
DCASFO
Washington, D.C. Reagan-National
Sat 12/6
6:05 am-1:40 pm
2 stops10h 35m
San Francisco
Sat 12/13
5:00 am-7:00 pm
1 stop11h 00m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Mon 12/8
5:37 pm-11:48 pm
1 stop9h 11m
San Francisco
Wed 12/10
7:00 am-5:30 pm
1 stop7h 30m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Wed 1/14
5:26 pm-10:47 pm
1 stop8h 21m
San Francisco
Mon 1/19
7:00 am-5:04 pm
1 stop7h 04m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Fri 12/5
6:56 pm-12:19 am
1 stop8h 23m
San Francisco
Mon 12/8
12:30 am-11:18 am
1 stop7h 48m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Thu 12/4
4:10 pm-7:20 pm
Nonstop6h 10m
San Francisco
Sun 12/7
9:20 pm-5:27 am
Nonstop5h 07m
Washington, D.C.San Francisco
DCA - SFO
DCASFO
Washington, D.C. Reagan-National
Fri 12/12
9:36 am-2:23 pm
1 stop7h 47m
San Francisco
Mon 12/15
12:30 am-11:09 am
1 stop7h 39m
Washington, D.C.San Francisco
DCA - SFO
DCASFO
Washington, D.C. Reagan-National
Thu 12/11
6:59 pm-10:18 pm
Nonstop6h 19m
San Francisco
Mon 12/15
9:51 am-5:59 pm
Nonstop5h 08m
Washington, D.C.San Francisco
DCA - SFO
DCASFO
Washington, D.C. Reagan-National
Fri 12/12
6:59 pm-10:18 pm
Nonstop6h 19m
San Francisco
Mon 12/15
9:51 am-5:59 pm
Nonstop5h 08m
Washington, D.C.San Francisco
DCA - SFO
DCASFO
Washington, D.C. Reagan-National
Thu 12/11
6:59 pm-10:18 pm
Nonstop6h 19m
San Francisco
Sun 12/14
9:51 am-5:59 pm
Nonstop5h 08m
Washington, D.C.San Francisco
DCA - SFO
DCASFO
Washington, D.C. Reagan-National
Fri 12/12
6:59 pm-10:18 pm
Nonstop6h 19m
San Francisco
Tue 12/16
9:08 am-8:00 pm
1 stop7h 52m
| Provider | Price Accuracy | Trust Score* | 
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | 
To ensure you get the cheapest price possible for a flight from Washington, D.C. to San Francisco, you should look to book at least 74 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to San Francisco (average of $102). Flying from Washington, D.C. to San Francisco in September is currently the most expensive (average of $188). 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.
A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to San Francisco at noon. If you’re flexible enough to do this you can expect to save up to 34% on your trip compared to booking a flight in the evening.
Travelers seeking maximum savings on their Washington, D.C. to San Francisco flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from WAS to SFO are scheduled on a Monday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (25 on average).
Denver (DEN) – chosen by Cheapflights users on 90% of 1-stop itineraries from Washington, D.C. to San Francisco on Cheapflights.
Atlanta (ATL) is the most affordable 1-stop option, with an average round-trip price of $310.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 9h 12m.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 2h 17m.
Crew
Entertainment
Boarding
Comfort
Food
Overall
Reviews
Hannah,Aug 2025
SFO - SAN
Crew
Entertainment
Boarding
Comfort
Food
Overall
Reviews
Hannah,Aug 2025
SFO - SAN
Crew
Entertainment
Boarding
Comfort
Food
Overall
Reviews
Hannah,Aug 2025
SFO - SAN
Crew
Entertainment
Boarding
Comfort
Food
Overall
Reviews
Hannah,Aug 2025
SFO - SAN
Crew
Entertainment
Boarding
Comfort
Food
Overall
Reviews
Hannah,Aug 2025
SFO - SAN
Crew
Entertainment
Boarding
Comfort
Food
Overall
Reviews
Hannah,Aug 2025
SFO - SAN
| Airline | Cheapest | Average | Flexibility | On-time | 
|---|---|---|---|---|
| Cheapest$123 | Average$288 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$134 | Average$292 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$162 | Average$365 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$188 | Average$401 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$218 | Average$397 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$219 | Average$332 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$272 | Average$462 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$272 | Average$452 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$276 | Average$424 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$277 | Average$483 | FlexibilityNo cancel fee | On-time69% |