Flight Check

Best Airline: DTW to SDF

Detroit to Louisville — airline reliability comparison

Spirit Airlines is the most reliable airline on the DTW to SDF route with a 100% on-time rate, compared to Delta Air Lines at 40%. 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.

On-Time Rate by Airline

Spirit Airlines100%
Republic Airways86%
Endeavor Air85%
SkyWest Airlines81%
Delta Air Lines40%

DTW to SDF Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Spirit AirlinesNKBest100%0.0%0m10
Republic AirwaysYX86%0.6%60m1,521
Endeavor Air9E85%1.3%75m296
SkyWest AirlinesOO81%0.7%72m2,186
Delta Air LinesDLWorst40%0.0%88m10

Route Overview

83%
Overall On-Time
69m
Avg Delay
0.8%
Cancel Rate
4,091
Total Flights
DTW to SDF Route DetailsReturn: SDF to DTW
DTW AirportSDF Airport

Flying out of DTW? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

Free. No account needed.

Data last updated October 2026. Source: Bureau of Transportation Statistics.