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Flight Reliability

AA 577 · American Airlines

Dallas–Fort Worth → Denver (DFW–DEN)94% of its flights flew this route. The rest (PHL–PHX) are included in these numbers.

29
Bring Snacks
WanderNerd Reliability Score
54%
Arrive within 15 minutes
35 min
Average arrival delay
5.1%
Cancelled
12 min
Median arrival delay

Based on 354 historical flights. Data through May 2026.

What the data says

Sunday scaries are real for this one.

AA 577 arrived on time 68% of the time on Wednesdays and just 34% on Sundays. That gap is worth planning around.

Well behind the DFW–DEN route.

AA 577 arrived on time 54% of the time, versus 70% across the DFW–DEN route.

Well behind the American Airlines network.

AA 577 arrived on time 54% of the time, versus 77% across the American Airlines network.

Keep a backup plan handy.

AA 577 was cancelled 5.1% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon60%(50 flights)
  • Tue58%(48 flights)
  • Wed68%(44 flights)
  • Thu53%(49 flights)
  • Fri48%(48 flights)
  • Sat56%(50 flights)
  • Sun34%(47 flights)
On-time by departure window
  • 6–9 PM54%(140 flights)
  • 9 PM–12 AM54%(196 flights)
On-time trend by month
59%
May

Jun 48% → May 59% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202548%29
July 202541%27
August 202535%29
September 202543%28
October 202545%29
November 202568%28
December 202566%29
January 202659%27
February 202675%24
March 202662%29
April 202650%30
May 202659%27
Departures on time
53%
Diverted
0%
Flights flown
336
Months covered
12

Same route, other flights

Keep nerding

Based on 354 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.