Flight Reliability
B6 635 · JetBlue Airways
Buffalo → San Juan (BUF–SJU)
84
Pretty Reliable
WanderNerd Reliability Score
- 76%
- Arrive within 15 minutes
- 11 min
- Average arrival delay
- 0%
- Cancelled
- 3 min
- Median arrival delay
Based on 38 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
B6 635 arrived on time 100% of the time on Fridays and just 80% on Saturdays. That gap is worth planning around.
A bit ahead of the JetBlue Airways network.
B6 635 arrived on time 76% of the time, versus 73% across the JetBlue Airways network.
The breakdown
- Mon—(9 flights)
- Tue—(0 flights)
- Wed—(9 flights)
- Thu—(0 flights)
- Fri100%(10 flights)
- Sat80%(10 flights)
- Sun—(0 flights)
- 6–9 AM86%(29 flights)
- 9 AM–12 PM—(9 flights)
- Departures on time
- 92%
- Diverted
- 0%
- Flights flown
- 38
- Months covered
- 3
Keep nerding
Based on 38 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.