C$ 179 Find Cheap Flights from Boston to San Diego – Compare and Save

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.

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

• JetBlue
• Alaska Airlines
• Southwest
• Delta

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

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

• JetBlue: a carry-on bag and a checked bag in Economy Class
• Alaska Airlines: a carry-on bag and a checked bag in Economy Class
• Delta: a carry-on bag and a checked bag in Economy Class

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

On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 433 round-trip via Charlotte Douglas (CLT), compared to C$ 535 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 49–C$ 139 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.

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

• Chicago O'Hare Intl (ORD) – 19% of one-stop connections
• Phoenix Sky Harbor Intl (PHX) – 16% of one-stop connections
• Denver Intl (DEN) – 13% of one-stop connections
• Philadelphia (PHL) – 12% of one-stop connections

Chicago O'Hare Intl (ORD) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 26% on the Boston to San Diego route. Wednesday is the cheapest departure day at C$ 483 round-trip on average, while Sunday is the most expensive at C$ 645, a difference of C$ 162. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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, 18% of flights were delayed in the past 3 months, with delays averaging 2 hours 36 minutes.

Morning is the busiest departure period on Boston to San Diego flights, with 51% leaving in that window. Evening departures account for 33%, Afternoon flights for 16%, and Night flights for 0%.

Some of the most popular sights in San Diego are San Diego Convention Center, B Street Cruise Ship Terminal, and Mission Beach. These are among the most viewed places in San Diego on KAYAK.

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

• Earliest: departs at 6:00 am and lands at 12:20 pm
• Latest: departs at 6:24 pm and lands at 12:44 am.

The flight takes about 6h 20m.

Last-minute fares on this route – booked within 2 weeks of departure – run 50% above the route average of C$ 538. Book 8 weeks before departure for the lowest fares.

A direct flight from Boston to San Diego takes 6h 20m, covering 6,684 km.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

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: 85% on time
• Delta: 78% on time

On average, flights on this route are punctual 82% of the time.

Morning flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via Chicago Midway (MDW) gives the shortest average 1-stop total travel time at 7h 52m, compared with 8h 08m via Phoenix Sky Harbor Intl (PHX) and 8h 09m via Lambert-St Louis (STL).

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

San Diego Airport (SAN) hosts 5 major car rental companies, with daily rates starting from around C$ 19 for economy cars. Top options include:
• Dollar
• Payless
• Europcar
• Thrifty
• Fox

Round-trip flights from Boston to San Diego range from C$ 422 to C$ 709, with an average of C$ 538 over the past 12 months. Anything below C$ 422 counts as a good deal.

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

• • JetBlue
• • Alaska Airlines
• • Delta