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Flight Reliability

AA 4549 · American Airlines

Louisville → Washington (SDF–DCA)

95
Nerd Approved
WanderNerd Reliability Score
93%
Arrive within 15 minutes
5 min early
Average arrival delay
1.4%
Cancelled
10 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

What the data says

Skip Saturday if you can.

AA 4549 arrived on time 96% of the time on Wednesdays. On Saturdays: 87%.

Better than the SDF–DCA route average.

AA 4549 arrived on time 93% of the time, versus 80% across the SDF–DCA route.

Well ahead of the American Airlines network.

AA 4549 arrived on time 93% of the time, versus 77% across the American Airlines network.

The breakdown

On-time by weekday
  • Mon94%(50 flights)
  • Tue92%(51 flights)
  • Wed96%(51 flights)
  • Thu94%(52 flights)
  • Fri90%(52 flights)
  • Sat87%(52 flights)
  • Sun96%(51 flights)
On-time by departure window
  • 6–9 AM93%(352 flights)
  • 9 AM–12 PM—(7 flights)
On-time trend by month
94%
May

Jun 90% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202594%31
August 202597%31
September 202593%30
October 202590%31
November 202590%29
December 202587%31
January 202693%29
February 202696%26
March 202690%30
April 2026100%30
May 202694%31
Departures on time
95%
Diverted
0%
Flights flown
359
Months covered
12

Same route, other flights

Keep nerding

Based on 364 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.