United's Economy Plus offers extra legroom and priority boarding, enhancing comfort and convenience.
United Polaris offers lie-flat seats and upscale amenities, perfect for premium transcontinental routes.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $244 (Expedia) |
One-way from | $139 (Delta) |
Popular in | December |
Cheapest in | February |
Average price | $417 |
Good round-trip deal | $337 or less |
Good one-way deal | $216 or less |
Fly from
Fly to
Route
Depart
Return
Price
San FranciscoWashington, D.C.
SFO - DCA
SFODCA
San Francisco
Wed 2/11
10:12 am-9:00 pm
1 stop7h 48m
Washington, D.C. Reagan-National
Sat 2/14
6:59 pm-10:19 pm
Nonstop6h 20m
San FranciscoWashington, D.C.
SFO - IAD
SFOIAD
San Francisco
Sun 4/19
4:55 pm-1:25 am
Nonstop5h 30m
Washington, D.C. Dulles Intl
Sat 4/25
9:23 am-12:30 pm
Nonstop6h 07m
San FranciscoWashington, D.C.
SFO - DCA
SFODCA
San Francisco
Wed 4/8
10:40 pm-8:43 am
1 stop7h 03m
Washington, D.C. Reagan-National
Wed 4/15
9:40 am-2:55 pm
1 stop8h 15m
San FranciscoWashington, D.C.
SFO - DCA
SFODCA
San Francisco
Thu 2/5
9:40 am-5:56 pm
Nonstop5h 16m
Washington, D.C. Reagan-National
Mon 2/9
6:56 pm-10:13 pm
Nonstop6h 17m
San FranciscoWashington, D.C.
SFO - DCA
SFODCA
San Francisco
Sat 2/14
5:45 am-5:45 pm
1 stop9h 00m
Washington, D.C. Reagan-National
Wed 2/18
5:59 pm-11:25 pm
1 stop8h 26m
San FranciscoWashington, D.C.
SFO - IAD
SFOIAD
San Francisco
Mon 2/2
7:00 am-5:04 pm
1 stop7h 04m
Washington, D.C. Dulles Intl
Wed 2/4
5:26 pm-10:47 pm
1 stop8h 21m
San FranciscoWashington, D.C.
SFO - DCA
SFODCA
San Francisco
Tue 3/10
8:40 am-9:00 pm
1 stop9h 20m
Washington, D.C. Reagan-National
Fri 3/13
5:15 pm-12:51 am
1 stop10h 36m
San FranciscoWashington, D.C.
SFO - DCA
SFODCA
San Francisco
Mon 2/16
10:45 pm-8:53 am
1 stop7h 08m
Washington, D.C. Reagan-National
Tue 2/24
3:10 pm-8:57 pm
1 stop8h 47m
San FranciscoWashington, D.C.
SFO - DCA
SFODCA
San Francisco
Tue 3/10
8:42 am-9:59 pm
1 stop10h 17m
Washington, D.C. Reagan-National
Mon 3/16
5:06 pm-11:44 pm
1 stop9h 38m
San FranciscoWashington, D.C.
SFO - IAD
SFOIAD
San Francisco
Wed 3/18
10:40 pm-11:32 am
1 stop9h 52m
Washington, D.C. Dulles Intl
Fri 3/20
6:00 am-10:50 am
1 stop7h 50m
| 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 Accuracy- | 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 Accuracy- | Trust Score*1 star |
The price you pay for your flight from San Francisco to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 64 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, May is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. (average of $118). Flying from San Francisco to Washington, D.C. in December is currently the most expensive (average of $237). 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.
One of the essential ways to save on airfare from San Francisco to Washington, D.C. is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 14% on airfare.
Travelers seeking maximum savings on their San Francisco to Washington, D.C. flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from SFO to WAS are scheduled on a Wednesday (38 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (19 on average).
Denver (DEN) – chosen by Cheapflights users on 90% of 1-stop itineraries from San Francisco to Washington, D.C. on Cheapflights.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $260.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 7h 22m.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 1h 46m.
Overall
Crew
Comfort
Boarding
Entertainment
Food
Reviews
Anonymous,Jan 2026
STS - LAX
Overall
Crew
Comfort
Boarding
Entertainment
Food
Reviews
Anonymous,Jan 2026
STS - LAX
Overall
Crew
Comfort
Boarding
Entertainment
Food
Reviews
Anonymous,Jan 2026
STS - LAX
Overall
Crew
Comfort
Boarding
Entertainment
Food
Reviews
Anonymous,Jan 2026
STS - LAX
Overall
Crew
Comfort
Boarding
Entertainment
Food
Reviews
Anonymous,Jan 2026
STS - LAX
Overall
Crew
Comfort
Boarding
Entertainment
Food
Reviews
Anonymous,Jan 2026
STS - LAX
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$105 | Average$275 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$133 | Average$309 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$138 | Average$389 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$172 | Average$390 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$188 | Average$402 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$241 | Average$412 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$260 | Average$423 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$264 | Average$492 | FlexibilityNo cancel fee | On-time69% |