Best Time to Fly ATL to AUS: On-Time Stats by Hour & Airline
Hartsfield-Jackson Atlanta International → Austin - Bergstrom International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.5% of Atlanta (ATL) to Austin (AUS) flights arrived on time (4,524 scheduled flights). That is 2.9 points above the national average of 77.6%.
Southwest Airlines was the most punctual of the 3 airlines on the route at 82.9%, while Frontier Airlines trailed at 66.2%.
February has been the best month (89% on time) and Sunday the weakest day of the week (72%).
1.3% of flights were cancelled, versus 1.8% nationally.
ATL to AUS 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 |
|---|---|---|---|---|
| Southwest Airlines | 82.9% | 52 min | 0.6% | 1,036 |
| Delta Air Lines | 81.1% | 56 min | 1.4% | 3,202 |
| Frontier Airlines | 66.2% | 77 min | 2.5% | 285 |
| American Airlines | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ATL to AUS
On-time arrival % by scheduled departure hour (local time), 8,935 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 95.9% | 1.6% | 125 |
| 7am–8am | 95.7% | 1.4% | 71 |
| 8am–9am | 91.1% | 1.7% | 943 |
| 9am–10am | 87.4% | 1.0% | 674 |
| 10am–11am | 88.4% | 1.0% | 409 |
| 11am–12pm | 86.2% | 0.7% | 810 |
| 12pm–1pm | 83.3% | 1.2% | 656 |
| 1pm–2pm | 84.8% | 0.9% | 325 |
| 2pm–3pm | 75.7% | 0.6% | 846 |
| 3pm–4pm | 71.3% | 1.4% | 965 |
| 4pm–5pm | 73.5% | 0.7% | 148 |
| 5pm–6pm | 68.2% | 1.0% | 828 |
| 6pm–7pm | 69.1% | 0.4% | 263 |
| 7pm–8pm | 69.0% | 1.1% | 523 |
| 8pm–9pm | 69.1% | 0.8% | 261 |
| 9pm–10pm | 64.1% | 1.3% | 306 |
| 10pm–11pm | 75.2% | 1.3% | 680 |
| 11pm–12am | 72.3% | 1.0% | 102 |
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 AUS
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) | 77.8% | -3.4 pts | 0.0% | 167 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.5% | +0.2 pts | 1.2% | 344 |
| Summer peak (Jun 15 - Aug 15) | 66.5% | -14.7 pts | 1.8% | 1,601 |
| All other days | 81.3% | — | 1.0% | 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).