Cheap flights from Baltimore to San Francisco from $172

If you aren’t able to travel to San Francisco during the month of April, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $441.

The cheapest day to depart from Baltimore to San Francisco is on a Thursday when prices can be found for as low as $518. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $775.

Our data shows that the cheapest Baltimore to San Francisco flights are usually those with departure times at noon. Our users have found flights to San Francisco at noon for as low as $492. Flights in the evening are often more expensive with an average ticket price of $720.

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

You are more likely to see cheaper flights to San Francisco from Baltimore when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $484 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Baltimore for as low as $410 on momondo.

You could potentially save up to 6% on your flight if you consider stops on a Baltimore to San Francisco flight.

As of May 2026, prices for Baltimore to San Francisco flights are approximately 15% cheaper when compared to flights at the same time last year.

Southwest, United Airlines, and Sun Country Air are the most popular carriers operating from Baltimore/Washington to San Francisco

United Airlines, Southwest and Alaska Airlines are the top three most popular airlines that fly to San Francisco from Baltimore according to our data. United Airlines is the first choice among our users, with 69% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 10 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Los Angeles (LAX) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Flights via Atlanta (ATL) offer the lowest average round-trip price of $384.

Flights connecting via Phoenix (PHX) have the shortest average one-way travel time: 8h 15m.

Phoenix (PHX) has the shortest average layover time for this route: 0h 50m.

The number of flights available between Baltimore and San Francisco is 6 per day as of May 2026. The most frequent departure time is 6:00AM, with 61% of daily flights leaving at noon.

The number of flights available between Baltimore and San Francisco is 46 per week as of May 2026. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.