Flight Reliability
B6 2104 · JetBlue Airways
San Juan → New York (SJU–JFK)
69
Usually Fine
WanderNerd Reliability Score
- 77%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 4.2%
- Cancelled
- 6 min early
- Median arrival delay
Based on 166 historical flights. Data through May 2026.
What the data says
Mornings have a slight edge.
Departures between 9 AM–12 PM arrived on time 80% of the time, against 74% between 3–6 AM.
Sunday scaries are real for this one.
B6 2104 arrived on time 96% of the time on Saturdays and just 65% on Sundays. That gap is worth planning around.
A bit ahead of the JetBlue Airways network.
B6 2104 arrived on time 77% of the time, versus 73% across the JetBlue Airways network.
Keep a backup plan handy.
B6 2104 was cancelled 4.2% of the time. Typical for U.S. flights is around 1–2%.
The breakdown
- Mon82%(22 flights)
- Tue71%(21 flights)
- Wed65%(23 flights)
- Thu83%(24 flights)
- Fri79%(24 flights)
- Sat96%(22 flights)
- Sun65%(23 flights)
- 3–6 AM74%(57 flights)
- 6–9 AM79%(92 flights)
- 9 AM–12 PM80%(10 flights)
95%
May
Nov 64% → May 95% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 64% | 11 |
| December 2025 | 71% | 14 |
| January 2026 | 70% | 27 |
| February 2026 | 62% | 26 |
| March 2026 | 87% | 31 |
| April 2026 | 83% | 30 |
| May 2026 | 95% | 20 |
- Departures on time
- 87%
- Diverted
- 0%
- Flights flown
- 159
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 166 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.