Best Time to Fly MIA to STT: On-Time Stats by Hour & Airline
Miami International → Cyril E King
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 77.3% of Miami (MIA) to Charlotte Amalie (STT) flights arrived on time (941 scheduled flights). That is in line with the national average of 77.6%.
American Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (85% on time) and August the worst month (65%).
The cancellation rate was 0.7% (US average 1.8%).
MIA to STT on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| American Airlines | 77.3% | 51 min | 0.7% | 941 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MIA to STT
On-time arrival % by scheduled departure hour (local time), 1,803 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 95.9% | 0.5% | 222 |
| 9am–10am | 90.1% | 0.6% | 173 |
| 10am–11am | 77.9% | 0.3% | 379 |
| 11am–12pm | 81.4% | 0.7% | 148 |
| 12pm–1pm | 67.9% | 0.4% | 225 |
| 1pm–2pm | 75.2% | 0.6% | 625 |
| 2pm–3pm | 77.4% | 0.0% | 31 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MIA to STT
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 28 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 81.9% | +2.9 pts | 3.5% | 86 |
| Summer peak (Jun 15 - Aug 15) | 79.5% | +0.4 pts | 0.8% | 260 |
| All other days | 79.1% | — | 0.3% | 1,429 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).