Flight Reliability
B6 261 · JetBlue Airways
Boston → San Juan (BOS–SJU)
65
Usually Fine
WanderNerd Reliability Score
- 68%
- Arrive within 15 minutes
- 16 min
- Average arrival delay
- 1.3%
- Cancelled
- 4 min early
- Median arrival delay
Based on 153 historical flights. Data through May 2026.
What the data says
Monday is the weak spot.
B6 261 arrived on time 75% of the time on Thursdays. On Mondays: 61%.
A bit behind the JetBlue Airways network.
B6 261 arrived on time 68% of the time, versus 73% across the JetBlue Airways network.
The breakdown
- Mon61%(23 flights)
- Tue67%(18 flights)
- Wed71%(17 flights)
- Thu75%(24 flights)
- Fri68%(25 flights)
- Sat70%(20 flights)
- Sun65%(23 flights)
- 9 AM–12 PM69%(42 flights)
- 12–3 PM68%(108 flights)
64%
May
Jun 68% → May 64% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 68% | 19 |
| July 2025 | 73% | 30 |
| August 2025 | 68% | 31 |
| September 2025 | 67% | 18 |
| October 2025 | 65% | 23 |
| December 2025 | 79% | 14 |
| May 2026 | 64% | 11 |
- Departures on time
- 74%
- Diverted
- 0.7%
- Flights flown
- 150
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 153 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.