Historical on-time performance
Louisville to Newark
642 miData through May 2026Source: US DOT · BTS
Flights on SDF–EWR arrive on time 83% of the time over the last 12 months.
On-time rate83%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled4.1%of scheduled flights
based on 929 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysOn-time83%Medianon timep9025 minCancel4.1%Flights929
Why flights run late
Delay causes
- Airline25%
- Weather3%
- Air traffic (NAS)53%
- Late aircraft20%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline0%
- Weather71%
- Air traffic (NAS)29%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 38 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 → EWR
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 — 89% on time.
- Mornings89% on time · p90 10 min · 1,496 flights
- Middays84% on time · p90 25 min · 1,093 flights
- Afternoons68% on time · p90 50 min · 349 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 88% on time.
- Saturdays88% on time · p90 20 min · 371 flights
- Wednesdays88% on time · p90 10 min · 425 flights
- Tuesdays87% on time · p90 10 min · 422 flights
- Thursdays84% on time · p90 25 min · 431 flights
- Mondays84% on time · p90 15 min · 432 flights
- Fridays81% on time · p90 35 min · 435 flights
- Sundays79% on time · p90 25 min · 432 flights
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