Historical on-time performance
Miami to Louisville
911 miData through Dec 2025Source: US DOT · BTS
Flights on MIA–SDF arrive on time 63% of the time over the last 12 months.
On-time rate63%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights
based on 338 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- American AirlinesOn-time63%Medianon timep9065 minCancel1.2%Flights338
Why flights run late
Delay causes
- Airline31%
- Weather6%
- Air traffic (NAS)18%
- Late aircraft44%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly MIA → SDF
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 66% to 88% on time.
- Mornings88% on time · p90 15 min · 56 flights · limited
- Afternoons79% on time · p90 35 min · 248 flights
- Overnights66% on time · p90 75 min · 1,086 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 62% to 77% on time.
- Fridays77% on time · p90 50 min · 203 flights
- Tuesdays76% on time · p90 60 min · 190 flights · limited
- Wednesdays70% on time · p90 50 min · 185 flights · limited
- Saturdays69% on time · p90 65 min · 234 flights
- Mondays67% on time · p90 65 min · 200 flights
- Thursdays66% on time · p90 80 min · 205 flights
- Sundays62% on time · p90 80 min · 205 flights
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