Delta Air Lines DTW to SDF on-time performance
Delta Air Lines nonstop flights from Detroit to Louisville · Aug 2025 – Jul 2026
On-time arrivals
45%
arrived < 15 min late
Cancelled
0.0%
0 flights
Avg arrival delay
49 min
88 min when late
Rank on route
#4 of 4
route average 79% on time
Key facts
- Delta Air Lines flights on DTW to SDF arrived on time 45% of the time in Aug 2025 – Jul 2026.
- 0% were cancelled, and 18% arrived an hour or more late.
- That ranks #4 of 4 airlines on this route, which averaged 79% on time overall.
- The largest source of delay minutes was extreme weather (52%).
On-time trend by month
Why this airline's flights were late
- Extreme weather52%
- Late-arriving aircraft26%
- Airline (crew, maintenance, cleaning, fueling)13%
- Air traffic control & airport congestion9%
- Security0%
Other airlines on DTW to SDF
- SkyWest Airlines78% on time · 19 min avg delay
- Republic Airways80% on time · 19 min avg delay
- Spirit Airlines100% on time · 0 min avg delay
Full DTW to SDF comparison →
Delta Air Lines on-time record across all routes →
11 Delta Air Lines flights tracked on this route; 0 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.