Cheap Flights from Boston to San Juan

Frequently Asked Questions

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

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

• How long is a flight from Boston to San Juan?

  It takes about 4 hours 2 minutes to fly from Boston to San Juan.

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

  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 Juan 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 Juan?

  Based on Trip.com data in the past 4 weeks, there is 24 flight per week flying from Boston to San Juan. You can check the weekly schedule for popular airlines on this route below: Jetblue Airways: S/M/T/W/T/F/S -- B6861 (07:49) Delta Air Lines: S/M/T/W/T/F/S -- DL1780 (08:27)

• When are flight tickets from Boston (BOS) to San Juan (SJU) the cheapest?

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

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

  After crunching the numbers on our November flight calendar, it's currently cheapest to fly from Boston to San Juan on November 22, 2025 with Frontier Airlines, with prices starting at US$90.

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

  You can land at any one of the following hubs in San Juan, with Logan International Airport to Luis Munoz Marin International Airport (BOS-SJU) is by far the most common option on this route: Fernando Luis Ribas Dominicci Airport (SIG) Luis Munoz Marin International Airport (SJU).

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

  The time difference between San Juan and Boston is 1h.

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

  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.