Old San Juan city walls and palm trees beside calm blue water in Puerto Rico

Cheap Flights from Boston (BOS) to San Juan (SJU)

  • About 1,679 miles
  • About 3.9 hours
  • Best months: Jan, Feb, Dec
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Short on time or budget? The BOS to SJU route connects Boston with San Juan on JetBlue, Delta and Spirit. Prices from $287 show up most often in Jan, Feb and Dec, so those are the months to watch.

Tips for finding a lower fare

  • Early morning departures from BOS tend to be cheaper and more on time.
  • Read the fare rules before paying. Basic economy to SJU usually limits changes.
  • Pack light for San Juan: Castillo San Felipe del Morro and Condado Beach are easy to reach without a rental car in many cases.

Airlines on this route

JetBlue, Delta, Spirit

Things to see in San Juan

  • Castillo San Felipe del Morro
  • Condado Beach
  • El Yunque

Frequently asked questions

When is the cheapest time to fly from Boston to San Juan?

Fares on BOS to SJU are often lower in Jan, Feb and Dec. Prices move with demand, so compare a few dates on the partner site before you decide.

How long is the flight from BOS to SJU?

A nonstop flight takes about 3.9 hours. Itineraries with a connection take longer, depending on the layover.

Which airlines fly from Boston to San Juan?

Carriers we commonly see on this route include JetBlue, Delta and Spirit. Schedules and availability change, so check current options when you search.

How far ahead should I book BOS to SJU?

For most domestic trips, booking about 1 to 3 months ahead gives a good balance of price and choice. Holiday travel is better booked earlier.

Is the price I see here the final price?

No. Fares shown on this page are indicative and change often. The final price, taxes and fees are shown on the partner site at booking.

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