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Route Reliability

Washington → Louisville

DCA–SDF · 474 miles · Ronald Reagan Washington National Airport to Louisville Muhammad Ali International Airport

54
A Little Dicey
WanderNerd Reliability Score
74%
Arrive within 15 minutes
11 min
Average arrival delay
6.9%
Cancelled
1,031
Flights in the data

Data through May 2026.

American Airlines is the only airline in this data on this route, arriving on time 74% of the time across 1,031 flights. No comparison to make.

What the data says

Morning flights do better here.

DCA–SDF flights departing between 6–9 AM arrived on time 83% of the time, versus 62% between 3–6 PM.

Wednesday is the weak spot.

DCA–SDF flights arrived on time 81% of the time on Saturdays. On Wednesdays: 66%.

Keep a backup plan handy.

This route was cancelled 6.9% of the time. Typical for U.S. flights is around 1–2%.

Trending in the right direction.

DCA–SDF flights arrived on time 82% of the time over the last three months in the data, compared with 66% 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
  • Mon78%(138 flights)
  • Tue69%(142 flights)
  • Wed66%(142 flights)
  • Thu76%(138 flights)
  • Fri73%(139 flights)
  • Sat81%(122 flights)
  • Sun75%(138 flights)
On-time by departure window
  • 6–9 AM83%(319 flights)
  • 9 AM–12 PM—(8 flights)
  • 12–3 PM67%(184 flights)
  • 3–6 PM62%(125 flights)
  • 6–9 PM72%(319 flights)
  • 9 PM–12 AM—(4 flights)
On-time trend by month
88%
May

Jun 55% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202555%74
July 202562%65
August 202570%83
September 202580%90
October 202587%93
November 202572%79
December 202555%58
January 202672%72
February 202671%78
March 202673%88
April 202687%90
May 202688%89

Same trip, other airports

Keep nerding

Based on 1,031 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.