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Route Reliability

Philadelphia → Louisville

PHL–SDF · 577 miles · Philadelphia International Airport to Louisville Muhammad Ali International Airport

79
Usually Fine
WanderNerd Reliability Score
83%
Arrive within 15 minutes
2 min
Average arrival delay
2.4%
Cancelled
989
Flights in the data

Data through May 2026.

American Airlines is the only airline in this data on this route, arriving on time 83% of the time across 989 flights. No comparison to make.

What the data says

Morning flights do better here.

PHL–SDF flights departing between 6–9 AM arrived on time 86% of the time, versus 78% between 3–6 PM.

Thursday is the weak spot.

PHL–SDF flights arrived on time 89% of the time on Mondays. On Thursdays: 78%.

Trending in the right direction.

PHL–SDF flights arrived on time 88% of the time over the last three months in the data, compared with 77% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon89%(139 flights)
  • Tue81%(135 flights)
  • Wed88%(134 flights)
  • Thu78%(143 flights)
  • Fri81%(138 flights)
  • Sat87%(126 flights)
  • Sun79%(145 flights)
On-time by departure window
  • 6–9 AM86%(232 flights)
  • 9 AM–12 PM85%(103 flights)
  • 12–3 PM84%(214 flights)
  • 3–6 PM78%(67 flights)
  • 6–9 PM81%(343 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
89%
May

Jun 76% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%86
July 202577%85
August 202585%85
September 202593%96
October 202583%111
November 202588%65
December 202573%75
January 202679%58
February 202680%69
March 202684%91
April 202691%65
May 202689%74

Keep nerding

Based on 989 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.