FlightRecord

Nashville (BNA) to Louisville (SDF): On-Time Performance

Data through July 2026

Nashville (BNA) to Louisville (SDF) effectively runs on two schedules. In January 2026, 93% of arrivals were on time; in July 2026 that fell to 50% — a 43-point seasonal swing. Across the full period the route averages 71% on-time against a national 78%.

On-time
71%
arrived <15 min late
Avg delay
18 min
completed flights
Cancelled
0.4%
Flights/day
1.4
last 12 months
Duration
59m
scheduled
Distance
151 mi

Monthly on-time trend

Monthly on-time percentage for BNA to SDF flights50%75%100%August 2025: 78% on-time (23 flights)78Aug 2025September 2025: 92% on-time (26 flights)92October 2025: 70% on-time (27 flights)70November 2025: 85% on-time (34 flights)85Nov 2025December 2025: 64% on-time (33 flights)64January 2026: 93% on-time (32 flights)93February 2026: 71% on-time (28 flights)71Feb 2026March 2026: 72% on-time (58 flights)72April 2026: 82% on-time (60 flights)82May 2026: 65% on-time (63 flights)65May 2026June 2026: 62% on-time (60 flights)62July 2026: 50% on-time (62 flights)50

Best time to fly from BNA to SDF

Aim for departures around 3 p.m. (89% on-time); avoid 7 p.m. departures (50%).

On-time percentage by scheduled departure hour, BNA to SDF9 a.m.: 84% on-time (31 flights)910 a.m.: 80% on-time (56 flights)1012 p.m.: 82% on-time (44 flights)121 p.m.: 87% on-time (52 flights)132 p.m.: 78% on-time (103 flights)143 p.m.: 89% on-time (38 flights)157 p.m.: 50% on-time (66 flights)198 p.m.: 53% on-time (66 flights)20scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday71%17 min
Tuesday77%15 min
Wednesday74%15 min
Thursdaybest77%13 min
Friday60%24 min
Saturday70%18 min
Sunday71%23 min

What causes delays on this route

Share of total delay minutes by cause, as reported by carriers to the US DOT.

  • Late-arriving aircraft68%
  • Airline operations23%
  • National airspace system7%
  • Weather2%

Frequently asked questions

How often are flights from BNA to SDF delayed?
29% of BNA–SDF flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 18 minutes.
What is the best time of day to fly from BNA to SDF?
Departures around 3 p.m. have the best record (89% on-time), while departures around 7 p.m. have the worst (50%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
How long is the flight from BNA to SDF?
The scheduled BNA–SDF flight time averages 59m over 151 miles. Actual arrival times vary — flights on this route land 15+ minutes late 29% of the time.
How often are BNA to SDF flights cancelled?
0.4% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
What is the worst month to fly from BNA to SDF?
July 2026 was the roughest month in this dataset, with only 50% of arrivals on time. The best was January 2026 at 93%. If your dates are flexible, that 43-point gap is worth planning around.

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Based on 506 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.