Flight profile · JetBlue
B6503
New York (JFK) to San Juan (SJU) · scheduled 8:00 AM – 12:52 PM
How B6503 performs
986 operations, 2023-07-01 to 2026-06-30.
B6503 arrived on time 74.9% of the time, against 71.0% for all JFK → SJU flights — this specific departure is 3.9 percentage points better than the route as a whole. Against JetBlue’s own flights on this route it is 7.6 points better.
Source: US DOT Bureau of Transportation Statistics · 986 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| B6503 | 74.9% | 1.52% | -5 min | 9.3% | 986 |
| JetBlue on JFK → SJU | 67.4% | 1.81% | -1 min | 14.2% | 6,629 |
| All JFK → SJU flights | 71.0% | 1.51% | -5 min | 11.5% | 11,028 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does B6503 run worse on particular days?
Wednesday is historically the most reliable day and Thursday the least, a gap of 16.6 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Data and methodology
Calculated by FlyerIntel from 986 records of B6503 operating JFK → SJU, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.