Best Time to Fly MEM to ATL: On-Time Stats by Hour & Airline
Memphis International → Hartsfield-Jackson Atlanta International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 86.5% of Memphis (MEM) to Atlanta (ATL) flights arrived on time (3,422 scheduled flights). That is 8.9 points above the national average of 77.6%.
Among 2 airlines, Delta Air Lines led with 87.0% on time and Frontier Airlines was last with 63.6%.
Over 24 months, Wednesday was the most reliable day (91% on time) and July the worst month (80%).
The cancellation rate was 2.0% (US average 1.8%).
MEM 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 | 87.0% | 91 min | 2.0% | 3,338 |
| Frontier Airlines | 63.6% | 78 min | 5.7% | 70 |
| SkyWest Airlines | Limited data | 14 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MEM to ATL
On-time arrival % by scheduled departure hour (local time), 6,732 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.1% | 2.2% | 227 |
| 6am–7am | 89.9% | 2.2% | 758 |
| 7am–8am | 90.9% | 1.7% | 835 |
| 8am–9am | 89.5% | 1.6% | 495 |
| 9am–10am | 91.9% | 1.1% | 548 |
| 10am–11am | 91.7% | 2.2% | 502 |
| 11am–12pm | 86.7% | 0.6% | 342 |
| 12pm–1pm | 89.5% | 1.8% | 498 |
| 1pm–2pm | 85.3% | 0.4% | 246 |
| 2pm–3pm | 83.7% | 0.4% | 529 |
| 3pm–4pm | 85.6% | 1.9% | 106 |
| 4pm–5pm | 79.3% | 1.1% | 550 |
| 5pm–6pm | 83.0% | 0.9% | 633 |
| 6pm–7pm | 81.5% | 3.2% | 95 |
| 7pm–8pm | 72.7% | 1.4% | 368 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MEM 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) | 83.2% | -4.8 pts | 0.0% | 120 |
| Christmas & New Year (Dec 20 - Jan 3) | 85.9% | -2.0 pts | 1.6% | 253 |
| Summer peak (Jun 15 - Aug 15) | 83.0% | -5.0 pts | 2.0% | 1,197 |
| All other days | 88.0% | — | 1.3% | 5,162 |
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).