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Route Reliability

Detroit → Louisville

DTW–SDF · 306 miles · Detroit Metropolitan Wayne County Airport to Louisville Muhammad Ali International Airport

79
Usually Fine
WanderNerd Reliability Score
78%
Arrive within 15 minutes
13 min
Average arrival delay
1.1%
Cancelled
1,321
Flights in the data

Data through May 2026.

Airlines on this route

  • Delta Air Lines77% on time · 1,297 flights
  • Spirit Airlines83% on time · 24 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

The late departure is the smart one here.

DTW–SDF flights departing between 9 PM–12 AM arrived on time 91% of the time, versus 69% between 3–6 PM.

Friday is doing you no favors.

DTW–SDF flights arrived on time 86% of the time on Saturdays. On Fridays: 73%.

Trending in the right direction.

DTW–SDF flights arrived on time 76% of the time over the last three months in the data, compared with 68% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon74%(197 flights)
  • Tue79%(190 flights)
  • Wed81%(186 flights)
  • Thu75%(192 flights)
  • Fri73%(193 flights)
  • Sat86%(152 flights)
  • Sun77%(195 flights)
On-time by departure window
  • 6–9 AM82%(351 flights)
  • 9 AM–12 PM71%(17 flights)
  • 12–3 PM80%(255 flights)
  • 3–6 PM69%(323 flights)
  • 6–9 PM78%(317 flights)
  • 9 PM–12 AM91%(42 flights)
On-time trend by month
81%
May

Jun 77% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%119
July 202568%123
August 202585%123
September 202591%107
October 202591%113
November 202582%105
December 202562%105
January 202668%83
February 202675%84
March 202666%111
April 202681%114
May 202681%118

Keep nerding

Based on 1,321 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.