Historical on-time performance
Los Angeles to Louisville
1,843 miData through Dec 2025Source: US DOT · BTS
Flights on LAX–SDF arrive on time 83% of the time over the last 12 months.
On-time rate83%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 30 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Spirit AirlinesOn-time83%Medianon timep9015 minCancel0.0%Flights30
Why flights run late
Delay causes
- Airline32%
- Weather9%
- Air traffic (NAS)48%
- Late aircraft11%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly LAX → 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 85% to 85% on time.
- Mornings85% on time · p90 25 min · 452 flights
- Middays85% on time · p90 25 min · 125 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 91% on time.
- Wednesdays91% on time · p90 10 min · 56 flights · limited
- Tuesdays88% on time · p90 15 min · 78 flights · limited
- Thursdays88% on time · p90 15 min · 113 flights · limited
- Mondays86% on time · p90 25 min · 73 flights · limited
- Sundays82% on time · p90 25 min · 107 flights · limited
- Fridays80% on time · p90 30 min · 71 flights · limited
- Saturdays80% on time · p90 40 min · 79 flights · limited
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