JetBlue BOS to SJU on-time performance
JetBlue nonstop flights from Boston to San Juan · Aug 2025 – Jul 2026
On-time arrivals
67%
arrived < 15 min late
Cancelled
2.8%
33 flights
Avg arrival delay
25 min
72 min when late
Rank on route
#2 of 4
route average 67% on time
Key facts
- JetBlue flights on BOS to SJU arrived on time 67% of the time in Aug 2025 – Jul 2026.
- 2.8% were cancelled, and 13% arrived an hour or more late.
- That ranks #2 of 4 airlines on this route, which averaged 67% on time overall.
- The largest source of delay minutes was late-arriving aircraft (39%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft39%
- Air traffic control & airport congestion31%
- Airline (crew, maintenance, cleaning, fueling)27%
- Extreme weather3%
- Security0%
Other airlines on BOS to SJU
- Delta Air Lines75% on time · 16 min avg delay
- Spirit Airlines53% on time · 51 min avg delay
- Frontier Airlines42% on time · 67 min avg delay
Full BOS to SJU comparison →
JetBlue on-time record across all routes →
1,192 JetBlue flights tracked on this route; 33 cancelled, 3 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.