Best Time to Fly AUS to ATL: On-Time Stats by Hour & Airline
Austin - Bergstrom International → Hartsfield-Jackson Atlanta International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 81.8% of Austin (AUS) to Atlanta (ATL) flights arrived on time (4,523 scheduled flights). That is 4.2 points above the national average of 77.6%.
Among 3 airlines, Delta Air Lines led with 85.7% on time and Frontier Airlines was last with 50.5%.
Over 24 months, Wednesday was the most reliable day (87% on time) and July the worst month (71%).
The cancellation rate was 1.3% (US average 1.8%).
AUS 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 | 85.7% | 74 min | 1.4% | 3,201 |
| Southwest Airlines | 78.5% | 54 min | 0.6% | 1,036 |
| Frontier Airlines | 50.5% | 75 min | 2.8% | 285 |
| American Airlines | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly AUS to ATL
On-time arrival % by scheduled departure hour (local time), 8,935 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.7% | 1.4% | 806 |
| 6am–7am | 94.0% | 1.4% | 799 |
| 7am–8am | 89.7% | 1.4% | 216 |
| 8am–9am | 90.0% | 0.6% | 818 |
| 9am–10am | 95.8% | 0.8% | 243 |
| 10am–11am | 89.5% | 1.4% | 812 |
| 11am–12pm | 87.6% | 0.0% | 137 |
| 12pm–1pm | 81.6% | 1.1% | 830 |
| 1pm–2pm | 81.0% | 1.1% | 725 |
| 2pm–3pm | 76.8% | 0.3% | 622 |
| 3pm–4pm | 75.7% | 1.8% | 512 |
| 4pm–5pm | 68.1% | 0.5% | 615 |
| 5pm–6pm | 66.6% | 2.2% | 711 |
| 6pm–7pm | 70.9% | 1.3% | 772 |
| 7pm–8pm | 67.2% | 1.8% | 279 |
| 8pm–9pm | Limited data | 12 | |
| 9pm–10pm | Limited data | 26 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on AUS 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) | 85.5% | +2.1 pts | 0.0% | 168 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.9% | -1.6 pts | 1.5% | 343 |
| Summer peak (Jun 15 - Aug 15) | 74.1% | -9.4 pts | 2.2% | 1,601 |
| All other days | 83.5% | — | 0.9% | 6,823 |
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).