Flight OddsSpirit Airlines · Fort Lauderdale, FL to San Juan, PR · 29 flights observed, 2025-12-04 to 2026-01-07 · 1,046 mi
NK821 covers more than one route in the data window — the stats below are for FLL → SJU, the one it has flown most recently. The others are linked under “Other routes”.
How often is NK821 on time?
Across 29 flights on FLL → SJU from 2025-12-04 to 2026-01-07, NK821 arrived within 15 minutes of schedule 52% of the time. The median arrival delay was +10 min, and the worst 10% of flights arrived +144 min or later. 7% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 14 | 52% |
| 16-30 min | 4 | 15% |
| 31-60 min | 3 | 11% |
| 61-120 min | 3 | 11% |
| 2+ hrs | 3 | 11% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 23 | 57% | +37 min |
| 2026-01 | 4 | 25% | +64 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 60% |
| Tue | 3 | 0% |
| Wed | 3 | 33% |
| Thu | 3 | 100% |
| Fri | 5 | 80% |
| Sat | 4 | 25% |
| Sun | 4 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…