Historical on-time performance
Dallas to Louisville
725 miData through Dec 2025Source: US DOT · BTS
Flights on DAL–SDF arrive on time 74% of the time over the last 12 months.
On-time rate74%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights
based on 246 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time74%Medianon timep9045 minCancel0.8%Flights246
Why flights run late
Delay causes
- Airline46%
- Weather4%
- Air traffic (NAS)13%
- Late aircraft37%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly DAL → SDF
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Middays are the most reliable time of day to fly this route — 80% on time.
- Middays80% on time · p90 30 min · 416 flights
- Afternoons61% on time · p90 55 min · 124 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 90% on time.
- Tuesdays90% on time · p90 15 min · 68 flights · limited
- Wednesdays85% on time · p90 15 min · 67 flights · limited
- Saturdays81% on time · p90 25 min · 94 flights · limited
- Mondays73% on time · p90 40 min · 67 flights · limited
- Fridays71% on time · p90 55 min · 68 flights · limited
- Thursdays70% on time · p90 50 min · 69 flights · limited
- Sundays69% on time · p90 40 min · 144 flights · limited
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