Best Time to Fly BNA to DTW: On-Time Stats by Hour & Airline
Nashville International → Detroit Metro Wayne County
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 78.9% of Nashville (BNA) to Detroit (DTW) flights arrived on time (2,421 scheduled flights). That is 1.3 points above the national average of 77.6%.
Delta Air Lines was the most punctual of the 3 airlines on the route at 86.7%, while Southwest Airlines trailed at 66.5%.
September has been the best month (90% on time) and Sunday the weakest day of the week (77%).
1.4% of flights were cancelled, versus 1.8% nationally.
BNA to DTW 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 |
|---|---|---|---|---|
| Delta Air Lines | 86.7% | 95 min | 2.0% | 1,407 |
| Spirit Airlines | 82.1% | 74 min | 0.8% | 124 |
| Southwest Airlines | 66.5% | 42 min | 0.5% | 870 |
| SkyWest Airlines | Limited data | 20 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BNA to DTW
On-time arrival % by scheduled departure hour (local time), 4,862 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 26 | |
| 6am–7am | 94.2% | 0.8% | 747 |
| 7am–8am | 86.5% | 2.6% | 38 |
| 8am–9am | Limited data | 7 | |
| 9am–10am | 85.4% | 0.8% | 242 |
| 10am–11am | 88.0% | 1.4% | 1,017 |
| 11am–12pm | 72.3% | 0.0% | 130 |
| 12pm–1pm | 83.7% | 0.6% | 167 |
| 1pm–2pm | 83.6% | 0.7% | 271 |
| 2pm–3pm | 85.6% | 1.0% | 399 |
| 3pm–4pm | 84.2% | 0.0% | 83 |
| 4pm–5pm | 50.7% | 0.7% | 151 |
| 5pm–6pm | 78.8% | 0.9% | 687 |
| 6pm–7pm | 78.5% | 0.6% | 319 |
| 7pm–8pm | 66.0% | 1.2% | 253 |
| 8pm–9pm | 58.8% | 0.0% | 234 |
| 9pm–10pm | 56.5% | 0.0% | 46 |
| 10pm–11pm | 75.0% | 2.2% | 45 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BNA to DTW
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) | 68.1% | -16.2 pts | 2.1% | 93 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.3% | -10.0 pts | 1.0% | 204 |
| Summer peak (Jun 15 - Aug 15) | 73.6% | -10.7 pts | 1.4% | 855 |
| All other days | 84.3% | — | 0.7% | 3,710 |
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).