Best Time to Fly MDW to CMH: On-Time Stats by Hour & Airline
Chicago Midway International → John Glenn Columbus International
Data through July 2026 · Last updated October 18, 2026
1,235 flights were scheduled from Chicago (MDW) to Columbus (CMH) in the last 12 months, and 81.5% of those that flew arrived on time, 3.8 points above the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
September has been the best month (91% on time) and Sunday the weakest day of the week (76%).
1.7% of flights were cancelled, versus 1.8% nationally.
MDW to CMH 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 | 81.5% | 49 min | 1.7% | 1,235 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MDW to CMH
On-time arrival % by scheduled departure hour (local time), 2,497 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 92.4% | 0.6% | 173 |
| 8am–9am | 92.6% | 0.0% | 148 |
| 9am–10am | 86.0% | 1.4% | 218 |
| 10am–11am | 93.2% | 0.5% | 222 |
| 11am–12pm | 86.0% | 0.9% | 115 |
| 12pm–1pm | 82.8% | 1.5% | 136 |
| 1pm–2pm | 87.2% | 1.1% | 184 |
| 2pm–3pm | 79.1% | 1.0% | 199 |
| 3pm–4pm | 80.0% | 1.1% | 91 |
| 4pm–5pm | 74.6% | 0.8% | 127 |
| 5pm–6pm | 72.5% | 0.7% | 154 |
| 6pm–7pm | 72.2% | 1.7% | 232 |
| 7pm–8pm | 79.7% | 2.7% | 147 |
| 8pm–9pm | 75.4% | 0.0% | 134 |
| 9pm–10pm | 57.2% | 1.5% | 133 |
| 10pm–11pm | 60.5% | 3.6% | 84 |
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 CMH
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) | 80.4% | -3.0 pts | 4.2% | 48 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.0% | -9.4 pts | 0.0% | 105 |
| Summer peak (Jun 15 - Aug 15) | 71.6% | -11.8 pts | 1.2% | 498 |
| All other days | 83.4% | — | 1.1% | 1,846 |
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).