Flight OddsMIA → BOS Spirit Airlines
Spirit Airlines · Miami, FL to Boston, MA · 186 flights, 2025-07-03 to 2026-04-28 · aggregated across 9 flight numbers
On-time arrival
56%
Median delay
+9 min
90th percentile
+101 min
Cancellation rate
6%
How on-time is Spirit Airlines from MIA to BOS?
Across every Spirit Airlines flight number on MIA → BOS (186 flights, 2025-07-03 to 2026-04-28), 56% arrived within 15 minutes of schedule. Median arrival delay +9 min; the worst 10% ran +101 min or later. 6% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 97 | 56% |
| 16-30 min | 16 | 9% |
| 31-60 min | 15 | 9% |
| 61-120 min | 33 | 19% |
| 2+ hrs | 12 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 2 | 0% | +118 min |
| 2025-08 | 9 | 67% | +9 min |
| 2025-09 | 12 | 83% | 0 min |
| 2025-10 | 9 | 44% | +52 min |
| 2026-01 | 22 | 82% | +2 min |
| 2026-02 | 41 | 54% | +31 min |
| 2026-03 | 38 | 45% | +39 min |
| 2026-04 | 40 | 50% | +29 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 23 | 43% |
| Tue | 19 | 63% |
| Wed | 20 | 70% |
| Thu | 32 | 66% |
| Fri | 23 | 48% |
| Sat | 29 | 59% |
| Sun | 27 | 44% |
NK flight numbers on MIA → BOS
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…