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Flight Reliability

AA 435 · American Airlines

Phoenix → Chicago (PHX–ORD)

61
A Little Dicey
WanderNerd Reliability Score
67%
Arrive within 15 minutes
19 min
Average arrival delay
2.5%
Cancelled
1 min
Median arrival delay

Based on 204 historical flights. Data through May 2026.

What the data says

3–6 PM has a slight edge.

Departures between 3–6 PM arrived on time 68% of the time, against 63% between 6–9 PM.

Sunday scaries are real for this one.

AA 435 arrived on time 80% of the time on Saturdays and just 48% on Sundays. That gap is worth planning around.

Lagging the PHX–ORD route.

AA 435 arrived on time 67% of the time, versus 78% across the PHX–ORD route.

Lagging the American Airlines network.

AA 435 arrived on time 67% of the time, versus 77% across the American Airlines network.

The breakdown

On-time by weekday
  • Mon52%(27 flights)
  • Tue72%(29 flights)
  • Wed78%(27 flights)
  • Thu60%(30 flights)
  • Fri78%(27 flights)
  • Sat80%(30 flights)
  • Sun48%(29 flights)
On-time by departure window
  • 3–6 PM68%(156 flights)
  • 6–9 PM63%(43 flights)
On-time trend by month
68%
May

Jun 58% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202558%26
July 202555%29
August 202577%30
September 202569%29
October 202577%30
April 202665%23
May 202668%31
Departures on time
71%
Diverted
0%
Flights flown
199
Months covered
8

Same route, other flights

Keep nerding

Based on 204 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.