Cheap Flights from Boston to San Diego from $110

Frequently Asked Questions

• What are the cheapest flights from Boston to San Diego (BOS-SAN)?

  Based on Trip.com data, American Airlines offers one-way fares as low as $110 on Cheapest nonstop routes (e.g. BOS to SAN on Thu, May 28), while Alaska Airlines offers Cheapest nonstop round-trips from $202 departing on Sat, Jun 6 and returning on Tue, Jun 9.

• Which airlines offer direct flights from Boston to San Diego?

  At the moment, you can catch a nonstop flight from Boston to San Diego with the following airlines, including: Jetblue Airways Alaska Airlines Delta Air Lines Hawaiian Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long does it take to fly from Boston (BOS) to San Diego (SAN) and what is the distance?

  It takes around 6 hours 25 minutes to fly from Boston (BOS) to San Diego (SAN).

• When is the best time to book flights from Boston to San Diego?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Boston to San Diego is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Boston to San Diego?

  Based on Trip.com data in the past 4 weeks, there is 9 flight per week flying from Boston to San Diego. You can check the weekly schedule for popular airlines on this route below: Jetblue Airways: S/-/-/W/T/-/S -- B6619 (10:43) Alaska Airlines: S/M/T/W/T/F/S -- AS389 (19:41)

• How can I find the best deals on flights from Boston to San Diego?

  To find best deals on flights from Boston to San Diego, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, May 28, with one-way flights priced at just $110.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Alaska Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for San Diego travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Boston (BOS) to San Diego (SAN) the cheapest?

  The cheapest months to fly from Boston to San Diego is October, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Boston to San Diego on?

  After crunching the numbers on our May flight calendar, it's currently cheapest to fly from Boston to San Diego on May 27, 2026 with Delta Air Lines, with prices starting at $100.

• Which airports can I fly to for San Diego from Boston?

  You can land at any one of the following hubs in San Diego, with Boston Logan International Airport to San Diego International Airport (BOS-SAN) is by far the most common option on this route: San Diego International Airport (SAN) McClellan-Palomar Airport (CLD) Marine Corps Air Station Miramar (NKX).

• Is there any time difference between Boston and San Diego?

  The time difference between San Diego and Boston is 3h.

• How do I change or cancel my ticket from Boston to San Diego?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.