Flight OddsNK310 BOS → SJU
Spirit Airlines · Boston, MA to San Juan, PR · 21 flights observed, 2025-12-18 to 2026-01-07 · 1,674 mi
NK310 covers more than one route in the data window — the stats below are for BOS → SJU, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
28%
Median delay
+30 min
90th percentile
+159 min
Cancellation rate
14%
How often is NK310 on time?
Across 21 flights on BOS → SJU from 2025-12-18 to 2026-01-07, NK310 arrived within 15 minutes of schedule 28% of the time. The median arrival delay was +30 min, and the worst 10% of flights arrived +159 min or later. 14% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 5 | 28% |
| 16-30 min | 4 | 22% |
| 31-60 min | 4 | 22% |
| 61-120 min | 1 | 6% |
| 2+ hrs | 4 | 22% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 14 | 36% | +37 min |
| 2026-01 | 4 | 0% | +111 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 0% |
| Tue | 3 | 33% |
| Wed | 3 | 33% |
| Thu | 2 | 50% |
| Fri | 2 | 50% |
| Sat | 2 | 0% |
| Sun | 3 | 33% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…