Best Time to Fly AUS to MKE: On-Time Stats by Hour & Airline
Austin - Bergstrom International → General Mitchell International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 70.8% of Austin (AUS) to Milwaukee (MKE) flights arrived on time (278 scheduled flights). That is 6.8 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Monday was the most reliable day (81% on time) and July the worst month (39%).
The cancellation rate was 1.1% (US average 1.8%).
AUS to MKE 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 | 70.8% | 53 min | 1.1% | 278 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly AUS to MKE
On-time arrival % by scheduled departure hour (local time), 408 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 95.5% | 2.2% | 45 |
| 9am–10am | 94.0% | 0.0% | 50 |
| 11am–12pm | 83.9% | 0.0% | 31 |
| 12pm–1pm | 86.8% | 0.0% | 38 |
| 1pm–2pm | 53.3% | 0.0% | 61 |
| 2pm–3pm | 59.5% | 2.3% | 43 |
| 3pm–4pm | 62.3% | 0.0% | 78 |
| 4pm–5pm | Limited data | 1 | |
| 6pm–7pm | Limited data | 9 | |
| 7pm–8pm | Limited data | 26 | |
| 8pm–9pm | 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 MKE
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 | 6 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 15 | ||
| Summer peak (Jun 15 - Aug 15) | 48.5% | -29.1 pts | 1.0% | 102 |
| All other days | 77.7% | — | 0.3% | 285 |
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).