£97 Find Cheap Flights from Boston to San Diego – Compare and Save

These are the earliest and latest flight times available from Boston to San Diego:

• Earliest: departs at 06:00 and lands at 12:31
• Latest: departs at 18:24 and lands at 00:55.

The flight takes about 6h 31m.

Only Economy class is available on flights from Boston to San Diego.

A direct flight from Boston to San Diego takes 6h 31m, covering 2,581 miles.

No, a passport is not required for this domestic route, but you will need another form of identification, such as a driving licence.

Return flights from Boston to San Diego range from £228 to £381, with an average of £291 over the past 12 months. Anything below £228 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 49% above the £291 route average. Book 8 weeks before departure for the lowest fares.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £151 return via New York John F Kennedy Intl (JFK), compared with £289 for direct.

JetBlue is slightly above the route average for timely arrivals, while Alaska Airlines has a lower on-time arrival rate. On-time arrival rates on Boston to San Diego flights are:

• JetBlue: 85% on time
• Alaska Airlines: 84% on time
• Delta: 78% on time

On average, flights on this route are punctual 81% of the time.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £26–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

The Airbus A318/A319/A320/A321 family is used most often on this route, operated mainly by JetBlue. Other aircraft seen on the route include Airbus A321neo variants.

Morning is the busiest departure period on Boston to San Diego flights, with 40% leaving in that window. Evening departures account for 40%, Afternoon flights for 20%, and Night flights for 0%.

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about £182 to £1,217. That means the highest observed fare was about 7x higher than the lowest one.

Three airlines offer in-flight Wi-Fi on Boston to San Diego flights:

• JetBlue
• Alaska Airlines
• Delta

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty programme, while others are paid add-ons priced by flight length.

One-way fares from Boston to San Diego are currently lower than usual. Average one-way flight prices are about £112, which is 42% below the typical average for this route.

San Diego Airport (SAN) hosts 5 major car hire companies, with daily rates starting from around £40 for economy cars. Top options include:

• Dollar
• Payless
• Europcar
• Thrifty
• Fox

Flights from Boston to San Diego usually depart from Boston Logan Intl (BOS) and arrive at San Diego (SAN).

Morning flights have the fewest delays on this route, while evening departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Boston to San Diego route, 19% of flights were delayed in the past three months, with delays averaging 2h 36m.

One-stop flights from Boston to San Diego most commonly connect through:

• Chicago O'Hare Intl (ORD) – 22% of one-stop connections
• Phoenix Sky Harbor Intl (PHX) – 15% of one-stop connections
• Philadelphia (PHL) – 11% of one-stop connections
• Denver Intl (DEN) – 11% of one-stop connections

Yes. Flexible dates can save you up to 29% on flights from Boston to San Diego. Wednesday is the cheapest departure day at £261 return on average, while Sunday is the most expensive at £363, a difference of £102.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

4 airlines operate flights between Boston and San Diego. The airlines offering direct flights on this route include:

• JetBlue
• Alaska Airlines
• Delta
• Southwest

Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time of 7h 50m, compared to 7h 52m via Chicago Midway (MDW) and 8h 04m via Nashville Intl (BNA).

San Diego is 3 hours behind Boston (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in San Diego are San Diego Convention Center, La Jolla Cove, and Hyatt Regency Mission Bay Spa and Marina. These are among the most viewed places in San Diego on KAYAK.

Among airlines operating Boston to San Diego flights:

• JetBlue: offers extra legroom; offers free seat selection
• Alaska Airlines: offers extra legroom; offers free seat selection
• Delta: offers extra legroom; offers free seat selection
• Southwest: offers free seat selection
• American Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• JetBlue: a cabin bag and a checked bag in Economy class
• Alaska Airlines: a cabin bag and a checked bag in Economy class
• Delta: a cabin bag and a checked bag in Economy class

Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.