Best Time to Fly MDW to AUS: On-Time Stats by Hour & Airline
Chicago Midway International → Austin - Bergstrom International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 77.3% of Chicago (MDW) to Austin (AUS) flights arrived on time (1,357 scheduled flights). That is in line with the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (86% on time) and June the worst month (68%).
The cancellation rate was 1.0% (US average 1.8%).
MDW 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 | 77.3% | 45 min | 1.0% | 1,357 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MDW to AUS
On-time arrival % by scheduled departure hour (local time), 2,770 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.6% | 0.0% | 113 |
| 6am–7am | 98.4% | 0.0% | 63 |
| 7am–8am | 86.9% | 0.5% | 199 |
| 8am–9am | 87.3% | 0.6% | 365 |
| 9am–10am | 87.8% | 0.8% | 124 |
| 10am–11am | 85.8% | 1.0% | 192 |
| 11am–12pm | 80.5% | 0.7% | 150 |
| 12pm–1pm | 80.5% | 0.8% | 129 |
| 1pm–2pm | 77.3% | 0.0% | 76 |
| 2pm–3pm | 83.0% | 0.9% | 220 |
| 3pm–4pm | 83.2% | 0.0% | 143 |
| 4pm–5pm | 74.0% | 0.0% | 128 |
| 5pm–6pm | 70.8% | 0.0% | 120 |
| 6pm–7pm | 52.0% | 0.0% | 130 |
| 7pm–8pm | 74.5% | 0.0% | 47 |
| 8pm–9pm | 77.5% | 0.4% | 237 |
| 9pm–10pm | 58.3% | 2.4% | 210 |
| 10pm–11pm | 69.9% | 0.8% | 124 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MDW 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) | 74.0% | -7.8 pts | 3.9% | 52 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.8% | -7.0 pts | 0.0% | 111 |
| Summer peak (Jun 15 - Aug 15) | 70.7% | -11.1 pts | 1.0% | 521 |
| All other days | 81.8% | — | 0.5% | 2,086 |
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).