Flight B6634
JetBlue Airways flight B6634
Looking for B6634 in the air…
Alerts at this flight's airports
San Juan (SJU) to Buffalo (BUF)
Historically, this flight arrives 15+ minutes late 19% of the time, and when it is late the delay averages 133 minutes. It was cancelled 1.1% of the time.
- On-time arrivals
- 81.1%
- Less than 15 minutes late
- Cancelled
- 1.1%
- Of scheduled flights
- Average delay when late
- 133 min
- Flights arriving 15+ minutes late
- Flights tracked
- 91
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 53%
- Airline (crew, maintenance, cleaning) 44%
- Air traffic control & airport 3%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Francisco (SFO) to Boston (BOS)
Only 8 flights on record, which is too few for reliable odds.
- On-time arrivals
- 75.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 160 min
- Flights arriving 15+ minutes late
- Flights tracked
- 8
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 95%
- Airline (crew, maintenance, cleaning) 4%
- Air traffic control & airport 1%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Oct 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| October 2025 | 75.0% | 8 |
| March 2026 | 100.0% | 3 |
| April 2026 | 88.2% | 17 |
| May 2026 | 88.9% | 18 |
| June 2026 | 82.4% | 17 |
| July 2026 | 76.5% | 18 |
| August 2026 | 66.7% | 18 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data