Cheap flights from San Diego to Washington, D.C. from $144

In general, July is the cheapest month to fly from San Diego 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 $347. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of July, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $354.

Our data shows that Friday 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 $418. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from San Diego to Washington, D.C. Dulles Intl Airport for around $605.

Flying to Washington, D.C. Dulles Intl Airport from San Diego in the morning is the least expensive time of day to depart. momondo users have found prices as low as $471 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $573 on average. Flights to Washington, D.C. Dulles Intl Airport from San Diego at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from San Diego 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 $382 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 Diego for as low as $307 on momondo.

There are 4 cabin classes available to choose from on San Diego 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 Diego to Washington, D.C. Dulles Intl Airport flight.

As of February 2026, prices for San Diego to Washington, D.C. Dulles Intl Airport flights are approximately 3% cheaper when compared to flights at the same time last year.

Delta, Frontier, and United Airlines are the most popular carriers operating from San Diego to Washington, D.C. Dulles Intl

United Airlines, Alaska Airlines and American Airlines are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from San Diego according to our data. United Airlines is the first choice among our users, with 55% 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.

Historically, on average around 10% of flights between San Diego and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 149 minutes.

Generally, flights departing at night 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. Sunday 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 9% of their flights experiencing any sort of delay.

2 flights are operational daily from San Diego to Washington, D.C. Dulles Intl Airport as of February 2026. The most popular departure time for this route is 9:00AM, with 75% of flights per day taking off at noon.

As of February 2026, 18 flights take off from San Diego and land in Washington, D.C. Dulles Intl Airport each week. The most common flight departure day for this route is Tue, with 39% of weekly flights taking off on this day.