Best Time to Fly IND to MDW: On-Time Stats by Hour & Airline
Indianapolis International → Chicago Midway International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 77.2% of Indianapolis (IND) to Chicago (MDW) flights arrived on time (733 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, Thursday was the most reliable day (83% on time) and March the worst month (64%).
The cancellation rate was 1.2% (US average 1.8%).
IND to MDW 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 | 77.2% | 45 min | 1.2% | 733 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IND to MDW
On-time arrival % by scheduled departure hour (local time), 733 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 1 | |
| 6am–7am | 89.6% | 1.2% | 254 |
| 7am–8am | 89.6% | 0.0% | 106 |
| 8am–9am | Limited data | 1 | |
| 10am–11am | Limited data | 1 | |
| 12pm–1pm | Limited data | 2 | |
| 1pm–2pm | Limited data | 2 | |
| 2pm–3pm | Limited data | 10 | |
| 3pm–4pm | Limited data | 3 | |
| 4pm–5pm | 73.7% | 1.0% | 100 |
| 5pm–6pm | 65.3% | 2.0% | 151 |
| 6pm–7pm | 59.5% | 1.3% | 76 |
| 7pm–8pm | Limited data | 24 | |
| 8pm–9pm | Limited data | 2 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IND to MDW
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 | 14 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 68.8% | -8.0 pts | 0.0% | 32 |
| Summer peak (Jun 15 - Aug 15) | 83.0% | +6.3 pts | 3.5% | 116 |
| All other days | 76.7% | — | 0.7% | 571 |
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).