Cheap flights from Boston to San Juan from $155

If you aren’t able to travel to San Juan Luis Munoz Marin Intl Airport during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $292.

On average, the least expensive day to fly to San Juan Luis Munoz Marin Intl Airport from Boston is on a Monday. momondo users have found tickets for Monday departures for as low as $373. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $407.

The cheapest time of day to fly to San Juan Luis Munoz Marin Intl Airport is at noon when flights can be purchased for as low as $347. Flights in the morning are often more expensive with an average ticket price of $403.

Fly from Boston Logan Intl to San Juan Luis Munoz Marin Intl for the best Boston Logan Intl - San Juan Luis Munoz Marin Intl flight prices

You are more likely to see cheaper flights to San Juan Luis Munoz Marin Intl Airport from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan Luis Munoz Marin Intl Airport for around $355 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan Luis Munoz Marin Intl Airport from Boston for as low as $312 on momondo.

There are 4 cabin classes available to choose from on Boston to San Juan Luis Munoz Marin Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Boston to San Juan Luis Munoz Marin Intl Airport.

As of August 2026, prices for Boston to San Juan Luis Munoz Marin Intl Airport flights are approximately 141% more expensive when compared to flights at the same time last year.

Delta is the most popular carrier operating from Boston Logan Intl to San Juan Luis Munoz Marin Intl

JetBlue, Delta and Frontier are the top three most popular airlines that fly to San Juan Luis Munoz Marin Intl Airport from Boston according to our data. JetBlue is the first choice among our users, with 67% of people opting to fly with this airline when traveling to San Juan Luis Munoz Marin Intl Airport. Keep in mind that there are 6 different airlines that fly to San Juan Luis Munoz Marin Intl Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 26% of flights between Boston and San Juan have experienced a delay on any given week. The average delay length over the past 12 months has been 154 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 18% of their flights experiencing any sort of delay.

New York (JFK) was the most common stop: 78% of momondo users choosing 1-stop flights on this route connected there.

Flights via Atlanta (ATL) offer the lowest average round-trip price of $290.

Flights connecting via New York (JFK) have the shortest average one-way travel time: 6h 46m.

Baltimore (BWI) has the shortest average layover time for this route: 1h 28m.

As of August 2026, there are 7 flights per day flying from Boston to San Juan Luis Munoz Marin Intl Airport. The most common time of day flights depart is 6:00AM, with 58% of flights taking off at noon.

The number of flights available between Boston and San Juan Luis Munoz Marin Intl Airport is 55 per week as of August 2026. The most frequent departure day is Fri, with 20% of weekly flights leaving on this day.