Cheap flights from Boston to San Diego from $137

If you are unable to visit San Diego during the month of January, then departing from Boston during the month May is also very affordable. Most momondo users find prices during this month for around $342.

The cheapest day to depart from Boston 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 $346. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $469. 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 $373. Flights at noon are often more expensive with an average ticket price of $456.

Fly from Boston Logan Intl to San Diego for the best Boston Logan Intl - San Diego flight prices

You are more likely to see cheaper flights to San Diego from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $377 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Boston for as low as $339 on momondo.

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

No. A direct flight is the cheapest option for a flight between Boston to San Diego.

As of August 2026, prices for Boston to San Diego flights are approximately 25% cheaper when compared to flights at the same time last year.

United Airlines, Delta, and Southwest are the most popular carriers operating from Boston Logan Intl to San Diego

JetBlue, American Airlines and Delta are the top three most popular airlines that fly to San Diego from Boston according to our data. JetBlue is the first choice among our users, with 44% 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.

Historically, on average around 17% of flights between Boston and San Diego have experienced a delay on any given week. The average delay length over the past 12 months has been 157 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.

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, JetBlue have had the least number of delays on this route over the last 12 months; with about 14% of their flights experiencing any sort of delay.

As of August 2026, 12 flights take off from Boston and land in San Diego each day. The most common flight departure time for this route is 4:00PM, with 52% of daily flights taking off at noon.

As of August 2026, there are 84 flights per week flying from Boston to San Diego. The most common day of the week flights depart is Sun, with 18% of flights taking off on this day.