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Flight Reliability

AA 470 · American Airlines

Philadelphia → Chicago (PHL–ORD)

53
A Little Dicey
WanderNerd Reliability Score
63%
Arrive within 15 minutes
23 min
Average arrival delay
2.1%
Cancelled
5 min early
Median arrival delay

Based on 194 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

AA 470 departing between 12–3 PM arrived on time 72% of the time, versus 44% between 3–6 PM.

Mondays have been rough.

AA 470 arrived on time 77% of the time on Fridays and just 52% on Mondays. That gap is worth planning around.

Lagging the PHL–ORD route.

AA 470 arrived on time 63% of the time, versus 73% across the PHL–ORD route.

Lagging the American Airlines network.

AA 470 arrived on time 63% of the time, versus 77% across the American Airlines network.

The breakdown

On-time by weekday
  • Mon52%(29 flights)
  • Tue59%(27 flights)
  • Wed75%(28 flights)
  • Thu53%(30 flights)
  • Fri77%(30 flights)
  • Sat67%(15 flights)
  • Sun62%(29 flights)
On-time by departure window
  • 12–3 PM72%(127 flights)
  • 3–6 PM44%(61 flights)
On-time trend by month
63%
May

Jun 52% → May 63% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202552%25
July 202539%26
August 202550%28
September 202590%30
October 202573%30
April 202671%21
May 202663%27
Departures on time
65%
Diverted
1.0%
Flights flown
188
Months covered
8

Same route, other flights

Keep nerding

Based on 194 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.