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Flight Reliability

AA 604 · American Airlines

Richmond → Miami (RIC–MIA)91% of its flights flew this route. The rest (JAX–DFW, BNA–MIA) are included in these numbers.

90
Nerd Approved
WanderNerd Reliability Score
89%
Arrive within 15 minutes
1 min
Average arrival delay
0.4%
Cancelled
9 min early
Median arrival delay

Based on 229 historical flights. Data through May 2026.

What the data says

The 9 AM–12 PM departure wins.

AA 604 departing between 9 AM–12 PM arrived on time 95% of the time, versus 87% between 3–6 AM.

Saturdays have been rough.

AA 604 arrived on time 97% of the time on Wednesdays and just 81% on Saturdays. That gap is worth planning around.

A bit ahead of the RIC–MIA route.

AA 604 arrived on time 89% of the time, versus 82% across the RIC–MIA route.

Better than the American Airlines network average.

AA 604 arrived on time 89% of the time, versus 77% across the American Airlines network.

The breakdown

On-time by weekday
  • Mon87%(31 flights)
  • Tue88%(32 flights)
  • Wed97%(31 flights)
  • Thu94%(34 flights)
  • Fri82%(33 flights)
  • Sat81%(31 flights)
  • Sun94%(33 flights)
On-time by departure window
  • 3–6 AM87%(61 flights)
  • 6–9 AM89%(144 flights)
  • 9 AM–12 PM95%(19 flights)
  • 6–9 PM—(1 flights)
On-time trend by month
97%
May

Jun 87% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202587%30
August 202590%30
September 202572%29
October 202594%31
December 202593%14
April 202696%23
May 202697%31
Departures on time
90%
Diverted
1.3%
Flights flown
225
Months covered
10

Same route, other flights

Keep nerding

Based on 229 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.