Best Time to Fly ATL to STT: On-Time Stats by Hour & Airline
Hartsfield-Jackson Atlanta International → Cyril E King
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 76.3% of Atlanta (ATL) to Charlotte Amalie (STT) flights arrived on time (719 scheduled flights). That is 1.3 points below the national average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
October has been the best month (89% on time) and Saturday the weakest day of the week (63%).
1.1% of flights were cancelled, versus 1.8% nationally.
ATL 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 |
|---|---|---|---|---|
| Delta Air Lines | 76.3% | 44 min | 1.1% | 719 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ATL to STT
On-time arrival % by scheduled departure hour (local time), 1,366 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 80.6% | 1.5% | 132 |
| 9am–10am | 82.4% | 0.0% | 128 |
| 10am–11am | 75.9% | 0.8% | 595 |
| 11am–12pm | 73.3% | 0.4% | 494 |
| 12pm–1pm | Limited data | 17 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ATL 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 | 16 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 67.8% | -8.3 pts | 3.3% | 90 |
| Summer peak (Jun 15 - Aug 15) | 74.3% | -1.9 pts | 0.0% | 241 |
| All other days | 76.1% | — | 0.6% | 1,019 |
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).