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Route Reliability

Louisville → Washington

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

65
Usually Fine
WanderNerd Reliability Score
80%
Arrive within 15 minutes
11 min
Average arrival delay
5.2%
Cancelled
1,029
Flights in the data

Data through May 2026.

American Airlines is the only airline in this data on this route, arriving on time 80% of the time across 1,029 flights. No comparison to make.

What the data says

Morning flights do better here.

SDF–DCA flights departing between 6–9 AM arrived on time 93% of the time, versus 58% between 12–3 PM.

Friday is doing you no favors.

SDF–DCA flights arrived on time 87% of the time on Saturdays. On Fridays: 77%.

Keep a backup plan handy.

This route was cancelled 5.2% of the time. Typical for U.S. flights is around 1–2%.

Ticking up lately.

SDF–DCA flights arrived on time 81% of the time over the last three months in the data, compared with 76% 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
  • Mon80%(140 flights)
  • Tue77%(145 flights)
  • Wed78%(144 flights)
  • Thu80%(141 flights)
  • Fri77%(139 flights)
  • Sat87%(123 flights)
  • Sun79%(141 flights)
On-time by departure window
  • 6–9 AM93%(352 flights)
  • 9 AM–12 PM80%(323 flights)
  • 12–3 PM58%(12 flights)
  • 3–6 PM66%(173 flights)
  • 6–9 PM59%(113 flights)
On-time trend by month
82%
May

Jun 68% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%76
July 202578%76
August 202584%85
September 202584%89
October 202588%93
November 202576%79
December 202575%59
January 202680%73
February 202675%77
March 202672%87
April 202688%89
May 202682%90

Same trip, other airports

Keep nerding

Based on 1,029 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.