Best Time to Fly MDW to BNA: On-Time Stats by Hour & Airline
Chicago Midway International → Nashville International
Data through July 2026 · Last updated October 18, 2026
1,869 flights were scheduled from Chicago (MDW) to Nashville (BNA) in the last 12 months, and 79.6% of those that flew arrived on time, 2.0 points above the US 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 (87% on time) and July the worst month (68%).
The cancellation rate was 1.4% (US average 1.8%).
MDW to BNA 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 | 79.6% | 60 min | 1.4% | 1,869 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MDW to BNA
On-time arrival % by scheduled departure hour (local time), 3,802 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 96.7% | 1.0% | 310 |
| 6am–7am | 96.5% | 2.3% | 260 |
| 7am–8am | 91.0% | 1.3% | 224 |
| 8am–9am | 92.4% | 0.7% | 304 |
| 9am–10am | 90.3% | 0.0% | 247 |
| 10am–11am | 87.3% | 0.8% | 119 |
| 11am–12pm | 78.7% | 1.1% | 272 |
| 12pm–1pm | 87.9% | 0.0% | 141 |
| 1pm–2pm | 79.7% | 0.8% | 120 |
| 2pm–3pm | 83.7% | 1.5% | 199 |
| 3pm–4pm | 75.8% | 0.9% | 221 |
| 4pm–5pm | 74.9% | 0.0% | 207 |
| 5pm–6pm | 70.7% | 1.0% | 207 |
| 6pm–7pm | 66.0% | 0.8% | 249 |
| 7pm–8pm | 80.4% | 0.6% | 159 |
| 8pm–9pm | 78.7% | 0.0% | 222 |
| 9pm–10pm | 64.2% | 3.0% | 233 |
| 10pm–11pm | 65.7% | 2.8% | 108 |
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 BNA
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) | 82.6% | -2.3 pts | 4.2% | 72 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.8% | -7.1 pts | 0.0% | 149 |
| Summer peak (Jun 15 - Aug 15) | 70.4% | -14.6 pts | 0.9% | 675 |
| All other days | 85.0% | — | 1.0% | 2,906 |
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).