Boston Logan International Airport
Boston, United StatesBOS / KBOS
Major airport · 154 direct destinations · 6 runways · longest runway 10,082 ft
68 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Boston → San Juan
BOS
BostonBoston Logan International Airport
BostonBoston Logan International AirportSJU
San JuanLuis Munoz Marin International Airport
San JuanLuis Munoz Marin International Airport- Distance
- 1,679 mi
- Estimated flight time
- ~3h 55m
Same local time in Boston and San Juan.
Observed nonstop
How often does this route fly?
Frequency
A couple of times a day
On average around 3.5 flights a day, observed from October 2025 to September 2026.
- 3.5
- flights per day
- 6
- busiest month · Apr
- 1
- quietest month · Oct
- 3 hr 31 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 5Jan2026
- 5Feb
- 5Mar
- 6Apr
- 4May
- 3Jun
- 3Jul
- 4Aug
- 2Sep
- 1Oct2025
- 1Nov
- 2Dec
Airlines
Who flies it
JetBlueall year
Delta Air Linesall year
Spirit Airlineswinter
Frontier Airlineswinter
Through the day
Departure times
Local time in Boston. Most departures between 08:00 and 11:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 3Mon
- 2.7Tue
- 2.8Wed
- 3.1Thu
- 3.4Fri
- 3.5Sat
- 3.2Sun
Fleet
Aircraft observed
- Airbus A320A32038%
- Airbus A321A32126%
- Airbus A321neoA21N26%
- Airbus A220-300BCS36%
- Airbus A320neoA20N2%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 5 | 137 |
|
| February 2026 | 5 | 133 |
|
| March 2026 | 5 | 154 |
|
| April 2026 | 6 | 160 |
|
| May 2026 | 4 | 114 |
|
| June 2026 | 3 | 96 |
|
| July 2026 | 3 | 85 |
|
| August 2026 | 4 | 108 |
|
| September 2026 | 2 | 76 |
|
| October 2025 | 1 | 7 |
|
| November 2025 | 1 | 5 |
|
| December 2025 | 2 | 53 |
|
Airlines observed on this route
From observed callsign routes on BOS-SJU - not a booking guarantee.
About this route
- International route: Boston and San Juan are in different countries.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Boston: 154.
- Direct destinations observed from San Juan: 59.
The airports on this route
Luis Munoz Marin International Airport
San Juan, Puerto RicoSJU / TJSJ
Major airport · 59 direct destinations · 2 runways · longest runway 10,003 ft
84 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from Boston to San Juan
The observed direct connection between Boston Logan International Airport (BOS) and Luis Munoz Marin International Airport (SJU) covers approximately 1,679 mi. The estimated flight time is around 3h 55m. Delta Air Lines, Frontier Airlines, JetBlue and Spirit Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Boston from San Juan by air?
- The great-circle distance between Boston Logan International Airport and Luis Munoz Marin International Airport is approximately 1,679 mi.
- How long is the flight from Boston to San Juan?
- Based on the distance, the estimated flight time is about 3h 55m. This is an estimate, not a schedule.
- Is there a direct connection from Boston to San Juan?
- Yes, a direct connection between BOS and SJU has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Delta Air Lines, Frontier Airlines, JetBlue and Spirit Airlines.
- How often is there a flight from Boston to San Juan?
- On average around 3.5 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 1,128 observed flights. Mainly JetBlue, Delta Air Lines, Spirit Airlines. That is an observation, not a timetable.
- What is the current time difference between Boston and San Juan?
- Same local time in Boston and San Juan.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.