Best Time to Fly ORD to BNA: On-Time Stats by Hour & Airline
Chicago O'Hare International → Nashville International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 70.0% of Chicago (ORD) to Nashville (BNA) flights arrived on time (5,026 scheduled flights). That is 7.6 points below the national average of 77.6%.
Among 7 airlines, Republic Airways led with 77.0% on time and SkyWest Airlines was last with 62.1%.
Over 24 months, Tuesday was the most reliable day (77% on time) and July the worst month (65%).
The cancellation rate was 2.5% (US average 1.8%).
ORD 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 |
|---|---|---|---|---|
| Republic Airways | 77.0% | 59 min | 1.6% | 544 |
| Envoy Air | 75.7% | 61 min | 3.1% | 870 |
| Frontier Airlines | 74.2% | 73 min | 3.1% | 64 |
| Southwest Airlines | 73.9% | 64 min | 1.3% | 307 |
| United Airlines | 70.6% | 75 min | 1.8% | 1,439 |
| American Airlines | 70.1% | 130 min | 1.6% | 319 |
| SkyWest Airlines | 62.1% | 88 min | 3.8% | 1,461 |
| PSA Airlines | Limited data | 3 | ||
| Spirit Airlines | Limited data | 19 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to BNA
On-time arrival % by scheduled departure hour (local time), 9,895 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 1 | |
| 5am–6am | Limited data | 5 | |
| 6am–7am | 82.7% | 1.3% | 229 |
| 7am–8am | 86.0% | 0.7% | 925 |
| 8am–9am | 82.5% | 1.0% | 686 |
| 9am–10am | 76.8% | 0.7% | 143 |
| 10am–11am | 84.6% | 1.0% | 1,015 |
| 11am–12pm | 77.7% | 0.9% | 232 |
| 12pm–1pm | 76.8% | 1.5% | 799 |
| 1pm–2pm | 71.1% | 2.1% | 671 |
| 2pm–3pm | 75.4% | 0.7% | 1,124 |
| 3pm–4pm | 63.3% | 1.4% | 590 |
| 4pm–5pm | 63.4% | 1.2% | 337 |
| 5pm–6pm | 64.6% | 2.4% | 1,125 |
| 6pm–7pm | 58.5% | 2.8% | 392 |
| 7pm–8pm | 63.7% | 4.2% | 476 |
| 8pm–9pm | 61.0% | 4.9% | 594 |
| 9pm–10pm | 65.0% | 2.2% | 321 |
| 10pm–11pm | 58.8% | 6.6% | 226 |
| 11pm–12am | Limited data | 4 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ORD 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) | 64.2% | -10.5 pts | 7.5% | 187 |
| Christmas & New Year (Dec 20 - Jan 3) | 69.7% | -5.0 pts | 0.0% | 313 |
| Summer peak (Jun 15 - Aug 15) | 66.1% | -8.5 pts | 2.1% | 1,686 |
| All other days | 74.6% | — | 1.8% | 7,709 |
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).