United Airlines flights from San Francisco to Washington, D.C. (SFO - WAS)

• Can I get a flight from San Francisco to Washington, D.C. on United Airlines for under $500?

  Cheapflights currently has 50 SFO-WAS flights for under $500. Flights to Washington, D.C. will vary based on many factors, like date and time. Click here to find the best price for your dates on Cheapflights.

• How do most travelers feel about United Airlines?

  The general consensus from 8,706 Cheapflights users is that United Airlines is a 6.4/10. Select your travel dates above for updated prices on flights from San Francisco to Washington, D.C. (SFO-WAS).

Currently, the most affordable month to book a United Airlines flight from San Francisco to Washington, D.C. in September, with an average price of $279. Conversely, traveling with United Airlines from San Francisco to Washington, D.C. in June will be the most expensive, with an average cost of $395. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).