Flights Boston → San Juan
BOS → SJU
How long is the flight from Boston to San Juan?
The flight from Boston (BOS) to San Juan (SJU) takes 3h 37m on average. That is the median time recorded across 6 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
Route overview
The flight route from Boston to San Juan operates with an average on-time performance of 70%, experiencing a mean delay of 25.2 minutes per flight. Over the course of a year, this route sees approximately 569 flights using Airbus A320 aircraft, serving one of the busiest destination airports in terms of passenger traffic, which handles nearly 10.3 million passengers annually.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Boston (BOS) → San Juan (SJU) route is operated by JetBlue Airways. Across 1153 flights monitored in recent months, 72% arrived on time (within 15 min of schedule), with an average delay of 22 minutes. The cancellation rate is 2.69%. FlightGuard's average computed risk is 24.9/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At San Juan the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from Boston the average ATFM delay is 5.5 minutes.
Heading to San Juan: what to expect in this direction
Flying from Boston (BOS) to San Juan (SJU) heads south for about 2,702 km, a flight time of roughly 3h 37m.
Departures from Boston on this leg cluster in the overnight window: about 39% of BOS-SJU flights take off then.
Air-traffic congestion: departing Boston the average ATFM delay is 5.5 min (atfm); arriving into San Juan it is 2.0 min (atfm).
Across 1,153 tracked BOS-SJU flights, 72% left on time with an average delay of 22 min and a 2.7% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| JetBlue Airways (B6) | 79% | 7 min | 0.1% |
Airlines operating BOS-SJU
Airports
Frequently asked questions about BOS-SJU
The flight from Boston (BOS) to San Juan (SJU) takes 3h 37m on average. That is the median time recorded across 6 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the Boston (BOS) -> San Juan (SJU) route, on-time performance is 72% with an average delay of 22 minutes, based on 1153 tracked flights.
The cancellation rate on Boston-San Juan is 2.69% across 1153 monitored flights.
The route is operated by 1 airline: JetBlue Airways.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at San Juan, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
