Historical on-time performance
Dallas-Fort Worth to Louisville
733 miData through May 2026Source: US DOT · BTS
Flights on DFW–SDF arrive on time 66% of the time over the last 12 months.
On-time rate66%arrived within 15 min
p90 delay80 min1 in 10 flights is worse (tail risk)
Cancelled3.6%of scheduled flights
based on 1,883 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Envoy AirbestOn-time81%Medianon timep9030 minCancel1.7%Flights233
- PSA AirlinesOn-time71%Medianon timep9085 minCancel6.3%Flights494
- American AirlinesOn-time61%Medianon timep9090 minCancel2.8%Flights1,156
Why flights run late
Delay causes
- Airline34%
- Weather6%
- Air traffic (NAS)9%
- Late aircraft51%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline12%
- Weather82%
- Air traffic (NAS)6%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 67 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 DFW → SDF
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 — 85% on time.
- Mornings85% on time · p90 30 min · 1,132 flights
- Middays80% on time · p90 35 min · 1,303 flights
- Afternoons70% on time · p90 70 min · 1,883 flights
- Evenings62% on time · p90 70 min · 1,065 flights
- Overnights62% on time · p90 70 min · 836 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 77% on time.
- Tuesdays77% on time · p90 50 min · 838 flights
- Saturdays75% on time · p90 50 min · 816 flights
- Wednesdays75% on time · p90 55 min · 855 flights
- Mondays71% on time · p90 60 min · 911 flights
- Sundays71% on time · p90 60 min · 942 flights
- Fridays69% on time · p90 60 min · 926 flights
- Thursdays69% on time · p90 60 min · 931 flights
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