Cheap flights from District of Columbia to San Diego from $149

If you are unable to visit San Diego during the month of January, then departing from District of Columbia during the month August is also very affordable. Most momondo users find prices during this month for around $357.

The cheapest day to depart from District of Columbia to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $384. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $464. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

The cheapest time of day to fly to San Diego is in the afternoon when flights can be purchased for as low as $389. Flights at noon are often more expensive with an average ticket price of $542.

Fly from Baltimore/Washington to San Diego for the best District of Columbia - San Diego flight prices

You are more likely to see cheaper flights to San Diego from District of Columbia when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $398 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from District of Columbia for as low as $340 on momondo.

There are 4 cabin classes available to choose from on District of Columbia to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

United Airlines, Delta, and Southwest are the most popular carriers operating from District of Columbia to San Diego

United Airlines, Southwest and Alaska Airlines are the top three most popular airlines that fly to San Diego from District of Columbia according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 9 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

As of April 2026, 9 flights take off from District of Columbia and land in San Diego each day. The most common flight departure time for this route is 5:00PM, with 49% of daily flights taking off in the afternoon.

64 flights are operational weekly from District of Columbia to San Diego as of April 2026. The most popular departure day for this route is Fri, with 20% of flights per week taking off on this day.