Flight OddsG4578 GRR → BOS
Allegiant Air · Grand Rapids, MI to Boston, MA · 3 flights observed, 2025-12-01 to 2026-01-03 · 740 mi
G4578 covers more than one route in the data window — the stats below are for GRR → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
67%
Median delay
+2 min
90th percentile
+13 min
Cancellation rate
0%
How often is G4578 on time?
Across 3 flights on GRR → BOS from 2025-12-01 to 2026-01-03, G4578 arrived within 15 minutes of schedule 67% of the time. The median arrival delay was +2 min, and the worst 10% of flights arrived +13 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 | 2 | 67% |
| 16-30 min | 1 | 33% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 2 | 50% | +9 min |
| 2026-01 | 1 | 100% | -19 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 1 | 100% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| Sat | 2 | 50% |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…