United's Economy Plus offers extra legroom, perfect for comfort on longer domestic routes.
United's Polaris Lounges provide exclusive amenities like showers and dining for premium passengers.

| Most accurate provider | Gotogate 3 stars | 
|---|---|
| Most trusted provider | Gotogate 3 stars | 
| Round-trip from | $262 (American Airlines) | 
| One-way from | $146 (eDestinos) | 
| Popular in | December | 
| Cheapest in | May | 
| Average price | $457 | 
| Good round-trip deal | $379 or less | 
| Good one-way deal | $208 or less | 
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Sun 11/23
6:17 pm-11:57 pm
1 stop8h 40m
San Francisco
Wed 12/3
7:00 am-5:30 pm
1 stop7h 30m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Tue 12/9
7:34 am-2:03 pm
1 stop9h 29m
San Francisco
Thu 12/11
7:00 am-5:30 pm
1 stop7h 30m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Thu 1/22
5:26 pm-10:47 pm
1 stop8h 21m
San Francisco
Mon 2/23
4:30 pm-5:25 pm
1 stop21h 55m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Mon 11/24
6:03 am-11:17 am
1 stop8h 14m
San Francisco
Thu 12/4
6:00 am-5:00 pm
1 stop8h 00m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Wed 11/26
4:10 pm-7:20 pm
Nonstop6h 10m
San Francisco
Wed 12/3
6:07 am-2:13 pm
Nonstop5h 06m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Thu 2/19
7:00 am-9:24 pm
2 stops17h 24m
San Francisco
Wed 2/25
6:00 am-5:55 pm
1 stop8h 55m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Tue 11/25
6:03 am-11:17 am
1 stop8h 14m
San Francisco
Wed 12/3
6:00 am-5:03 pm
1 stop8h 03m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Sat 11/22
5:59 pm-11:23 pm
1 stop8h 24m
San Francisco
Mon 12/1
12:30 am-11:18 am
1 stop7h 48m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Sun 11/23
6:00 am-10:44 am
1 stop7h 44m
San Francisco
Mon 12/1
12:30 am-11:18 am
1 stop7h 48m
Washington, D.C.San Francisco
IAD - SFO
IADSFO
Washington, D.C. Dulles Intl
Mon 2/16
7:59 pm-10:50 am
1 stop17h 51m
San Francisco
Sat 2/28
6:15 am-6:55 pm
1 stop9h 40m
| 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 Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | 
Booking 51 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 $188). Flying from Washington, D.C. Dulles Intl Airport to San Francisco in June is currently the most expensive (average of $275). 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.
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 23% on the flight price compared to flying in the afternoon, which is usually more expensive.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to San Francisco flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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 174 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
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.
Over the last year, Delta have had the lowest number of delays on this route, with no flights being classified as delayed.
Overall
Boarding
Comfort
Crew
Food
Entertainment
Reviews
Hannah,Aug 2025
SFO - SAN
Overall
Boarding
Comfort
Crew
Food
Entertainment
Reviews
Hannah,Aug 2025
SFO - SAN
Overall
Boarding
Comfort
Crew
Food
Entertainment
Reviews
Hannah,Aug 2025
SFO - SAN
Overall
Boarding
Comfort
Crew
Food
Entertainment
Reviews
Hannah,Aug 2025
SFO - SAN
Overall
Boarding
Comfort
Crew
Food
Entertainment
Reviews
Hannah,Aug 2025
SFO - SAN
Overall
Boarding
Comfort
Crew
Food
Entertainment
Reviews
Hannah,Aug 2025
SFO - SAN
| Airline | Cheapest | Average | Flexibility | On-time | 
|---|---|---|---|---|
| Cheapest$170 | Average$300 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$267 | Average$397 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$272 | Average$483 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$272 | Average$497 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$276 | Average$397 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$276 | Average$360 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$277 | Average$458 | FlexibilityNo cancel fee | On-time69% |