Cheap flights from Baltimore to San Diego from $127

If you are unable to visit San Diego during the month of February, then departing from Baltimore during the month January is also very affordable. Most momondo users find prices during this month for around $358.

The cheapest day to depart from Baltimore 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 $397. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $514. 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 $398. Flights at noon are often more expensive with an average ticket price of $617.

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

You are more likely to see cheaper flights to San Diego from Baltimore when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $400 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Baltimore for as low as $349 on momondo.

There is only 1 cabin class available to choose from on Baltimore to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Southwest and Delta are the most popular carriers operating from Baltimore/Washington to San Diego

United Airlines, Southwest and Alaska Airlines are the top three most popular airlines that fly to San Diego from Baltimore according to our data. United Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 8 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

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

Flights via Los Angeles (LAX) offer the lowest average round-trip price of $345.

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 7h 21m.

Detroit (DTW) has the shortest average layover time for this route: 1h 15m.

The number of flights available between Baltimore and San Diego is 2 per day as of July 2026. The most frequent departure time is 3:00PM, with 41% of daily flights leaving at noon.

As of July 2026, 19 flights take off from Baltimore and land in San Diego each week. The most common flight departure day for this route is Tue, with 21% of weekly flights taking off on this day.