Best Time to Fly BNA to SDF: On-Time Stats by Hour & Airline
Nashville International → Louisville Muhammad Ali International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 71.2% of Nashville (BNA) to Louisville (SDF) flights arrived on time (506 scheduled flights). That is 6.4 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
January has been the best month (93% on time) and Friday the weakest day of the week (59%).
0.4% of flights were cancelled, versus 1.8% nationally.
BNA to SDF 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 | 71.2% | 56 min | 0.4% | 506 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BNA to SDF
On-time arrival % by scheduled departure hour (local time), 506 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | Limited data | 1 | |
| 8am–9am | Limited data | 1 | |
| 9am–10am | 83.9% | 0.0% | 31 |
| 10am–11am | 80.4% | 0.0% | 56 |
| 11am–12pm | Limited data | 8 | |
| 12pm–1pm | 81.8% | 0.0% | 44 |
| 1pm–2pm | 86.5% | 0.0% | 52 |
| 2pm–3pm | 77.5% | 1.0% | 103 |
| 3pm–4pm | 89.2% | 2.6% | 38 |
| 4pm–5pm | Limited data | 15 | |
| 6pm–7pm | Limited data | 11 | |
| 7pm–8pm | 50.0% | 0.0% | 66 |
| 8pm–9pm | 53.0% | 0.0% | 66 |
| 9pm–10pm | Limited data | 13 | |
| 10pm–11pm | Limited data | 1 | |
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 SDF
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 | 10 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 18 | ||
| Summer peak (Jun 15 - Aug 15) | 57.7% | -17.9 pts | 0.0% | 104 |
| All other days | 75.5% | — | 0.5% | 374 |
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).