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Flight Reliability

AA 401 · American Airlines

Washington → Miami (DCA–MIA)98% of its flights flew this route. The rest (ORD–TPA, DFW–MIA) are included in these numbers.

90
Nerd Approved
WanderNerd Reliability Score
90%
Arrive within 15 minutes
0 min
Average arrival delay
1.4%
Cancelled
10 min early
Median arrival delay

Based on 213 historical flights. Data through May 2026.

What the data says

Mondays have been rough.

AA 401 arrived on time 97% of the time on Saturdays and just 75% on Mondays. That gap is worth planning around.

Better than the DCA–MIA route average.

AA 401 arrived on time 90% of the time, versus 76% across the DCA–MIA route.

Better than the American Airlines network average.

AA 401 arrived on time 90% of the time, versus 77% across the American Airlines network.

The breakdown

On-time by weekday
  • Mon75%(28 flights)
  • Tue94%(31 flights)
  • Wed90%(31 flights)
  • Thu90%(31 flights)
  • Fri90%(29 flights)
  • Sat97%(29 flights)
  • Sun90%(30 flights)
On-time by departure window
  • 3–6 AM—(9 flights)
  • 6–9 AM89%(195 flights)
  • 9 AM–12 PM—(5 flights)
On-time trend by month
94%
May

Jun 83% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%29
July 202583%29
August 202593%29
September 202593%30
October 202590%31
April 202692%24
May 202694%31
Departures on time
91%
Diverted
0.5%
Flights flown
209
Months covered
9

Same route, other flights

Keep nerding

Based on 213 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.