Best Time to Fly STT to ATL: On-Time Stats by Hour & Airline
Cyril E King → Hartsfield-Jackson Atlanta International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.9% of Charlotte Amalie (STT) to Atlanta (ATL) flights arrived on time (719 scheduled flights). That is 5.2 points above the national average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (87% on time) and February the worst month (76%).
The cancellation rate was 2.2% (US average 1.8%).
STT to ATL 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 | 82.9% | 89 min | 2.2% | 719 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly STT to ATL
On-time arrival % by scheduled departure hour (local time), 1,366 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12pm–1pm | 92.5% | 2.4% | 41 |
| 1pm–2pm | 81.8% | 1.1% | 378 |
| 2pm–3pm | 88.6% | 0.8% | 266 |
| 3pm–4pm | 82.8% | 1.8% | 499 |
| 4pm–5pm | 77.8% | 2.4% | 165 |
| 5pm–6pm | 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 STT to ATL
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) | 71.3% | -12.8 pts | 3.3% | 90 |
| Summer peak (Jun 15 - Aug 15) | 85.4% | +1.3 pts | 1.2% | 241 |
| All other days | 84.1% | — | 1.5% | 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).