Louisville to Detroit — airline reliability comparison
Spirit Airlines is the most reliable airline on the SDF to DTW route with a 100% on-time rate, compared to Delta Air Lines at 70%. Based on 10 flights tracked.
This route involves weather-prone airports, which can affect reliability regardless of airline.
Source: Bureau of Transportation Statistics. Updated October 2026.| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Spirit AirlinesNKBest | 100% | 0.0% | 0m | 10 |
| Republic AirwaysYX | 90% | 0.2% | 65m | 1,521 |
| Endeavor Air9E | 90% | 1.3% | 66m | 295 |
| SkyWest AirlinesOO | 83% | 0.9% | 97m | 2,187 |
| Delta Air LinesDLWorst | 70% | 0.0% | 137m | 10 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.