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Route Reliability

Louisville → Las Vegas

SDF–LAS · 1,624 miles · Louisville Muhammad Ali International Airport to Harry Reid International Airport

88
Pretty Reliable
WanderNerd Reliability Score
85%
Arrive within 15 minutes
3 min
Average arrival delay
0.8%
Cancelled
400
Flights in the data

Data through May 2026.

Airlines on this route

  • Southwest Airlines86% on time · 365 flights
  • Spirit Airlines74% on time · 34 flights
  • American Airlines0% on time · 1 flights

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

What the data says

The 3–6 AM departure wins.

SDF–LAS flights departing between 3–6 AM arrived on time 92% of the time, versus 71% between 9 AM–12 PM.

Saturday is the weak spot.

SDF–LAS flights arrived on time 89% of the time on Tuesdays. On Saturdays: 78%.

Recent months have been rougher.

SDF–LAS flights arrived on time 79% of the time over the last three months in the data, compared with 93% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon88%(59 flights)
  • Tue89%(53 flights)
  • Wed89%(52 flights)
  • Thu87%(60 flights)
  • Fri83%(59 flights)
  • Sat78%(51 flights)
  • Sun80%(61 flights)
On-time by departure window
  • 3–6 AM92%(26 flights)
  • 6–9 AM92%(196 flights)
  • 9 AM–12 PM71%(21 flights)
  • 12–3 PM83%(60 flights)
  • 3–6 PM74%(85 flights)
  • 6–9 PM—(7 flights)
On-time trend by month
78%
May

Jun 77% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%30
July 202578%32
August 202594%31
September 202582%45
October 202581%48
November 202597%29
December 202597%31
January 202686%28
February 202696%28
March 202677%31
April 202680%30
May 202678%32

Keep nerding

Based on 400 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.