Cheap flights from Washington, D.C. to San Francisco from $134

If you aren’t able to travel to San Francisco during the month of May, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $391.

The cheapest day to depart from Washington, D.C. to San Francisco is on a Thursday when prices can be found for as low as $492. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $697.

Our data shows that the cheapest Washington, D.C. to San Francisco flights are usually those with departure times at noon. Our users have found flights to San Francisco at noon for as low as $458. Flights in the afternoon are often more expensive with an average ticket price of $610.

Fly from Washington, D.C. Reagan-National to San Francisco for the best Washington, D.C. - San Francisco flight prices

You are more likely to see cheaper flights to San Francisco from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $420 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Washington, D.C. for as low as $371 on momondo.

There are 4 cabin classes available to choose from on Washington, D.C. to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 15% on your flight if you consider stops on a Washington, D.C. to San Francisco flight.

As of March 2026, prices for Washington, D.C. to San Francisco flights are approximately 2% cheaper when compared to flights at the same time last year.

Frontier is the most popular carrier operating from Washington, D.C. to San Francisco

United Airlines, Southwest and Alaska Airlines are the top three most popular airlines that fly to San Francisco from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 66% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 10 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Historically, on average around 17% of flights between Washington, D.C. and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 189 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

Denver (DEN) was the most common stop: 30% of momondo users choosing 1-stop flights on this route connected there.

Flights via Denver (DEN) offer the lowest average round-trip price of $254.

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 7h 40m.

Chicago (ORD) has the shortest average layover time for this route: 0h 38m.

As of March 2026, 37 flights take off from Washington, D.C. and land in San Francisco each day. The most common flight departure time for this route is 6:00PM, with 38% of daily flights taking off in the evening.

As of March 2026, there are 260 flights per week flying from Washington, D.C. to San Francisco. The most common day of the week flights depart is Mon, with 16% of flights taking off on this day.