Cheap flights from San Francisco to Washington, D.C. from $139

In general, May is the cheapest month to fly from San Francisco to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $397. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of May, then flying in July is also cheap. Prices for this month can be found on momondo for an average of $397.

Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $495. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to Washington, D.C. Dulles Intl Airport for around $659.

Flying to Washington, D.C. Dulles Intl Airport from San Francisco in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $454 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $599 on average. Flights to Washington, D.C. Dulles Intl Airport from San Francisco at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $435 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from San Francisco for as low as $371 on momondo.

There are 4 cabin classes available to choose from on San Francisco to Washington, D.C. Dulles Intl 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 7% on your flight if you consider stops on a San Francisco to Washington, D.C. Dulles Intl Airport flight.

As of February 2026, prices for San Francisco to Washington, D.C. Dulles Intl Airport flights are approximately 4% cheaper when compared to flights at the same time last year.

Delta is the most popular carrier operating from San Francisco to Washington, D.C. Dulles Intl

United Airlines, Alaska Airlines and Hawaiian Airlines are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from San Francisco 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 Washington, D.C. Dulles Intl Airport. Keep in mind that there are 7 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

Las Vegas (LAS) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

Flights via Dallas (DFW) offer the lowest average round-trip price of $269.

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 9h 05m.

Las Vegas (LAS) has the shortest average layover time for this route: 2h 48m.

As of February 2026, there are 16 flights per day flying from San Francisco to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 8:00AM, with 40% of flights taking off at noon.

As of February 2026, 117 flights take off from San Francisco and land in Washington, D.C. Dulles Intl Airport each week. The most common flight departure day for this route is Thu, with 26% of weekly flights taking off on this day.