Cheap flights from Boston to San Juan from £134

If you aren’t able to travel during the month of January, then book flights to San Juan Luis Munoz Marin Intl Airport from Boston during March instead. Flights to San Juan Luis Munoz Marin Intl Airport in March, while not as cheap as those in January, still average around £225.

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 £277 when searching weeks before you fly. 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 £250 on momondo.

There are 2 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.

Historically, on average around 27% 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 156 minutes.

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

Tuesday is statistically the day of the week that experiences the fewest 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 fewest delays on this route over the last 12 months, with about 19% of their flights experiencing any sort of delay.

The number of flights available between Boston and San Juan Luis Munoz Marin Intl Airport is 7 per day as of November 2026. The most frequent departure time is 20:00, with 69% of daily flights leaving in the evening.

55 flights are operational weekly from Boston to San Juan Luis Munoz Marin Intl Airport as of November 2026. The most popular departure day for this route is Mon, with 18% of flights per week taking off on this day.