Cheap flights from Baltimore to San Diego from $119

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

The cheapest day to depart from Baltimore to San Diego is on a Thursday. Travelers who choose to depart for San Diego on a Thursday will often find tickets for as low as $385. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $484. 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 evening when flights can be purchased for as low as $387. 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 $385 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 $345 on momondo.

You could potentially save up to 16% on your flight if you consider stops on a Baltimore to San Diego flight.

As of May 2026, prices for Baltimore to San Diego flights are approximately 105% more expensive when compared to flights at the same time last year.

United Airlines, Delta, and Southwest 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 39% 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.

Seattle (SEA) was the most common stop: 50% 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.

Houston (IAH) has the shortest average layover time for this route: 1h 13m.

The number of flights available between Baltimore and San Diego is 3 per day as of May 2026. The most frequent departure time is 4:00PM, with 33% of daily flights leaving at noon.

As of May 2026, 24 flights take off from Baltimore and land in San Diego each week. The most common flight departure day for this route is Mon, with 25% of weekly flights taking off on this day.