Washington to San Francisco flights
The cheapest round trip we found from Washington to San Francisco is $375 (Dec 21 – 27, 1 stop).
WAS to SFO · Round trip · Economy · Prices per person in USD · Price found (1 hour ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $392 |
| December 2026 | $375 (cheapest month) |
Cheapest dates in the next 4 months
Round trip, per person-
Dec 21 – 27 6 nights · leave Mon$375$375 Book
Frontier Airlines 1 stop · 6h 56m -
Nov 19 – 25 6 nights · leave Thu$466$466 Book
Frontier Airlines 1 stop · 7h 01m
-
Nov 16 – 22 6 nights · leave Mon$500$500 Book
Frontier Airlines 2 stops · 7h 01m
-
Nov 17 – 23 6 nights · leave Tue$508$508 Book
Frontier Airlines 1 stop · 7h 01m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
Things to do in San Francisco
One Go City pass for Golden Gate Bay Cruise, Exploratorium, Filoli and more
- All-Inclusive Pass Unlimited Visit as many attractions as you like for 1–5 days from $109 See pass
- Explorer Pass Pick 2–5 of 25 attractions from $89 See pass
- Essentials Pass A few top attractions, chosen as you go from $74 See pass
Go City prices checked Oct 23, 2026; the final price is on Go City. Partner links: we may earn a commission if you book, at no extra cost to you.
Plan the rest of your trip
San Francisco · Dec 21 – 27Partner links: we may earn a commission if you book, at no extra cost to you.
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Flights to San Francisco from other cities
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Washington to San Francisco: questions
How much does a flight from Washington to San Francisco cost?
The cheapest round trip we have found right now is $375, leaving December 21 and returning December 27. Prices are per person, economy, in USD.
Which airports do Washington to San Francisco flights use?
Washington airports include Washington Dulles International (IAD) and Ronald Reagan National (DCA). San Francisco airports include San Francisco International (SFO). The prices on this page cover every airport in both cities (WAS and SFO are the city codes).
About this route
We track round-trip economy fares from Washington (United States) to San Francisco (United States) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $375, departing December 21 and returning December 27. The cheapest month to fly in our data is December, from $375. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.