Flight OddsNK1231 BOS → FLL
Spirit Airlines · Boston, MA to Fort Lauderdale, FL · 35 flights observed, 2025-07-09 to 2025-08-12 · 1,237 mi
On-time arrival
54%
Median delay
+4 min
90th percentile
+135 min
Cancellation rate
0%
How often is NK1231 on time?
Across 35 flights on BOS → FLL from 2025-07-09 to 2025-08-12, NK1231 arrived within 15 minutes of schedule 54% of the time. The median arrival delay was +4 min, and the worst 10% of flights arrived +135 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 19 | 54% |
| 16-30 min | 4 | 11% |
| 31-60 min | 2 | 6% |
| 61-120 min | 5 | 14% |
| 2+ hrs | 5 | 14% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 23 | 57% | +40 min |
| 2025-08 | 12 | 50% | +23 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 40% |
| Tue | 5 | 60% |
| Wed | 5 | 60% |
| Thu | 5 | 60% |
| Fri | 5 | 40% |
| Sat | 5 | 60% |
| Sun | 5 | 60% |
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…