SJU to STT flight delays
San Juan, PR (SJU) Charlotte Amalie, VI (STT) · 68 miles
365 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
70.44%
Arrived on time
Within 15 minutes of schedule
0.55%
Cancelled
Share of scheduled flights
74 min
When late, late by
Average across delayed arrivals
23 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In May it ran 39 points more punctual than in September — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
Only JetBlue Airways flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
Flights from San Juan to Charlotte Amalie run late more often than the average route, though not severely.
This is a thin route — 365 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
Which airline should you fly on this route?
Over January 2025 – August 2026, JetBlue Airways arrived on time most often on SJU to STT. Flights ran closest to schedule in May and worst in September.
Every airline on SJU to STT
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 |
|---|---|---|---|---|---|
| JetBlue Airways | 351 | 71.55% | 0.57% | 63 min | D |
| Frontier Airlines | 14 | 42.86% | 0% | 212 min | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
Other routes from San Juan
Common questions
Are flights from San Juan to Charlotte Amalie usually delayed?
70.44% of flights on the SJU to STT route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from San Juan to Charlotte Amalie?
Only JetBlue Airways appears in the published record on this route, with 351 flights and 71.55% arriving on time.
How often are SJU to STT flights cancelled?
0.55% of scheduled flights did not operate — about 6 in every thousand. That is in the normal range.
What is the best month to fly San Juan to Charlotte Amalie?
May, when 93.5% of flights arrived on time. The worst was September at 54.5%.
When SJU to STT flights are late, how late are they?
About 74 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 STT during January 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 →