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Flight Reliability

AA 6503 · American Airlines

Dallas–Fort Worth → Aspen (DFW–ASE)86% of its flights flew this route. The rest (STL–LAX, DRO–DFW) are included in these numbers.

56
A Little Dicey
WanderNerd Reliability Score
76%
Arrive within 15 minutes
12 min
Average arrival delay
1.9%
Cancelled
7 min early
Median arrival delay

Based on 319 historical flights. Data through May 2026.

What the data says

The 6–9 AM departure wins.

AA 6503 departing between 6–9 AM arrived on time 83% of the time, versus 68% between 9 AM–12 PM.

Friday is doing you no favors.

AA 6503 arrived on time 85% of the time on Tuesdays and just 67% on Fridays. That gap is worth planning around.

A bit ahead of the DFW–ASE route.

AA 6503 arrived on time 76% of the time, versus 70% across the DFW–ASE route.

Ticking up lately.

AA 6503 arrived on time 73% of the time over the last three months in the data, compared with 67% in the three months before that.

The breakdown

On-time by weekday
  • Mon73%(45 flights)
  • Tue85%(39 flights)
  • Wed81%(43 flights)
  • Thu84%(44 flights)
  • Fri67%(42 flights)
  • Sat68%(41 flights)
  • Sun74%(43 flights)
On-time by departure window
  • 6–9 AM83%(151 flights)
  • 9 AM–12 PM68%(142 flights)
  • 12–3 PM—(4 flights)
On-time trend by month
90%
May

Jun 88% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202588%34
July 202596%28
August 202577%30
September 202596%26
October 202561%31
November 202585%27
December 202562%29
January 202654%28
February 202668%22
March 202662%26
May 202690%10
Departures on time
83%
Diverted
5.0%
Flights flown
297
Months covered
12

Same route, other flights

Keep nerding

Based on 319 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.