Historical on-time performance
Detroit to Louisville
Flights on DTW–SDF arrive on time 76% of the time over the last 12 months.
based on 1,203 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Republic AirwaysOn-time79%Medianon timep9045 minCancel0.7%Flights408
- SkyWest AirlinesOn-time75%Medianon timep9055 minCancel1.5%Flights795
Why flights run late
Delay causes
- Airline59%
- Weather17%
- Air traffic (NAS)10%
- Late aircraft14%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline27%
- Weather53%
- Air traffic (NAS)20%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 15 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly DTW → SDF
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Overnights are the most reliable time of day to fly this route — 88% on time.
- Overnights88% on time · p90 20 min · 727 flights
- Middays83% on time · p90 25 min · 815 flights
- Mornings82% on time · p90 30 min · 729 flights
- Afternoons79% on time · p90 50 min · 844 flights
- Evenings74% on time · p90 55 min · 421 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 85% on time.
- Wednesdays85% on time · p90 30 min · 507 flights
- Saturdays84% on time · p90 25 min · 427 flights
- Tuesdays83% on time · p90 30 min · 507 flights
- Fridays81% on time · p90 35 min · 527 flights
- Mondays81% on time · p90 35 min · 531 flights
- Thursdays80% on time · p90 40 min · 519 flights
- Sundays79% on time · p90 40 min · 518 flights
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