Historical on-time performance
Louisville to Detroit
306 miData through May 2026Source: US DOT · BTS
Flights on SDF–DTW arrive on time 82% of the time over the last 12 months.
On-time rate82%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights
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
- Republic AirwaysbestOn-time90%Medianon timep9010 minCancel0.2%Flights408
- SkyWest AirlinesOn-time77%Medianon timep9070 minCancel1.3%Flights795
Why flights run late
Delay causes
- Airline70%
- Weather19%
- Air traffic (NAS)10%
- Late aircraft2%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline9%
- Weather64%
- Air traffic (NAS)27%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 11 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 SDF → DTW
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 91% on time.
- Mornings91% on time · p90 10 min · 1,101 flights
- Middays86% on time · p90 25 min · 1,107 flights
- Afternoons82% on time · p90 35 min · 435 flights
- Evenings80% on time · p90 50 min · 894 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 82% to 87% on time.
- Wednesdays87% on time · p90 20 min · 507 flights
- Saturdays87% on time · p90 15 min · 427 flights
- Tuesdays87% on time · p90 25 min · 507 flights
- Fridays86% on time · p90 25 min · 527 flights
- Thursdays85% on time · p90 25 min · 519 flights
- Mondays84% on time · p90 45 min · 531 flights
- Sundays82% on time · p90 35 min · 519 flights
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