SJU to JAX flight delays
San Juan, PR (SJU) Jacksonville, FL (JAX) · 1,288 miles
59 flights · March 2025 – August 2026 · US Bureau of Transportation Statistics
79.66%
Arrived on time
Within 15 minutes of schedule
0%
Cancelled
Share of scheduled flights
152 min
When late, late by
Average across delayed arrivals
32 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 152 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
The two directions do not behave alike. JAX to SJU arrives on time 5.1 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
The San Juan to Jacksonville route sits close to the middle of the record — neither notably punctual nor notably late.
Every airline on SJU to JAX
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Frontier Airlines | 30 | 83.33% | 0% | 193 min | — |
| JetBlue Airways | 29 | 75.86% | 0% | 123 min | — |
The return leg
JAX to SJU Jacksonville back to San Juan 74.58% on time —Other routes from San Juan
Common questions
Are flights from San Juan to Jacksonville usually delayed?
79.66% of flights on the SJU to JAX route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
How often are SJU to JAX flights cancelled?
0% of scheduled flights did not operate — about 1 in every thousand. That is in the normal range.
When SJU to JAX flights are late, how late are they?
About 152 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on SJU to JAX during March 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →