Luis Munoz Marin International Airport
San Juan, Puerto RicoSJU / TJSJ
Major airport · 59 direct destinations · 2 runways · longest runway 10,003 ft
87 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center
Route
San Juan → Boston
SJU
San JuanLuis Munoz Marin International Airport
San JuanLuis Munoz Marin International AirportBOS
BostonBoston Logan International Airport
BostonBoston Logan International Airport- Distance
- 1,679 mi
- Estimated flight time
- ~3h 55m
Same local time in San Juan and Boston.
Observed nonstop
How often does this route fly?
Frequency
Several times a day
On average around 4 flights a day, observed from October 2025 to September 2026.
- 4
- flights per day
- 7
- busiest month · Apr
- 3
- quietest month · Oct
- 3 hr 42 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 5Jan2026
- 6Feb
- 6Mar
- 7Apr
- 4May
- 4Jun
- 3Jul
- 3Aug
- 3Sep
- 3Oct2025
- 3.5Nov
- 4Dec
In October 2025 we saw less traffic at San Juan in general than usual; compare that month with care.
Airlines
Who flies it
JetBlueall year
Delta Air Linesall year
Spirit Airlineswinter
Frontier Airlineswinter
Through the day
Departure times
Local time in San Juan. Most departures between 13:00 and 16:00.
- 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
- 4.1Mon
- 4.3Tue
- 3.8Wed
- 3.8Thu
- 4.4Fri
- 5.2Sat
- 4.2Sun
Fleet
Aircraft observed
- Airbus A320A32037%
- Airbus A321A32126%
- Airbus A321neoA21N25%
- Airbus A220-300BCS38%
- Airbus A320neoA20N2%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 5 | 146 |
|
| February 2026 | 6 | 169 |
|
| March 2026 | 6 | 194 |
|
| April 2026 | 7 | 189 |
|
| May 2026 | 4 | 117 |
|
| June 2026 | 4 | 104 |
|
| July 2026 | 3 | 91 |
|
| August 2026 | 3 | 107 |
|
| September 2026 | 3 | 76 |
|
| October 2025 | 3 | 95 |
|
| November 2025 | 3.5 | 110 |
|
| December 2025 | 4 | 136 |
|
Airlines observed on this route
From observed callsign routes on SJU-BOS - not a booking guarantee.
About this route
- International route: San Juan and Boston are in different countries.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from San Juan: 59.
- Direct destinations observed from Boston: 154.
The airports on this route
Boston Logan International Airport
Boston, United StatesBOS / KBOS
Major airport · 154 direct destinations · 6 runways · longest runway 10,082 ft
69 °F · 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 San Juan to Boston
The observed direct connection between Luis Munoz Marin International Airport (SJU) and Boston Logan International Airport (BOS) 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 San Juan from Boston by air?
- The great-circle distance between Luis Munoz Marin International Airport and Boston Logan International Airport is approximately 1,679 mi.
- How long is the flight from San Juan to Boston?
- 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 San Juan to Boston?
- Yes, a direct connection between SJU and BOS 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 San Juan to Boston?
- On average around 4 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 1,534 observed flights. Mainly JetBlue, Delta Air Lines, Spirit Airlines. That is an observation, not a timetable.
- What is the current time difference between San Juan and Boston?
- Same local time in San Juan and Boston.
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.