Flight Reliability
B6 903 · JetBlue Airways
New York → San Juan (JFK–SJU)
36
Bring Snacks
WanderNerd Reliability Score
- 59%
- Arrive within 15 minutes
- 27 min
- Average arrival delay
- 5.4%
- Cancelled
- 3 min
- Median arrival delay
Based on 92 historical flights. Data through May 2026.
What the data says
Wednesdays have been rough.
B6 903 arrived on time 85% of the time on Mondays and just 30% on Wednesdays. That gap is worth planning around.
Lagging the JFK–SJU route.
B6 903 arrived on time 59% of the time, versus 72% across the JFK–SJU route.
Lagging the JetBlue Airways network.
B6 903 arrived on time 59% of the time, versus 73% across the JetBlue Airways network.
The breakdown
- Mon85%(13 flights)
- Tue55%(11 flights)
- Wed30%(10 flights)
- Thu83%(12 flights)
- Fri43%(14 flights)
- Sat57%(14 flights)
- Sun54%(13 flights)
- 6–9 AM—(2 flights)
- 9 AM–12 PM—(2 flights)
- 12–3 PM—(3 flights)
- 3–6 PM—(2 flights)
- 6–9 PM58%(73 flights)
- 9 PM–12 AM—(5 flights)
68%
Aug
Jun 53% → Aug 68% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 53% | 19 |
| July 2025 | 50% | 26 |
| August 2025 | 68% | 31 |
- Departures on time
- 62%
- Diverted
- 0%
- Flights flown
- 87
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 92 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.