Flight Reliability
AA 623 · American Airlines
Phoenix → Kansas City (PHX–MCI)96% of its flights flew this route. The rest (PBI–BOS) are included in these numbers.
- 63%
- Arrive within 15 minutes
- 28 min
- Average arrival delay
- 0.7%
- Cancelled
- 1 min
- Median arrival delay
Based on 145 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
AA 623 departing between 3–6 PM arrived on time 83% of the time, versus 61% between 6–9 PM.
Mondays have been rough.
AA 623 arrived on time 71% of the time on Thursdays and just 50% on Mondays. That gap is worth planning around.
Lagging the PHX–MCI route.
AA 623 arrived on time 63% of the time, versus 77% across the PHX–MCI route.
Lagging the American Airlines network.
AA 623 arrived on time 63% of the time, versus 77% across the American Airlines network.
The breakdown
- Mon50%(18 flights)
- Tue67%(18 flights)
- Wed63%(16 flights)
- Thu71%(24 flights)
- Fri61%(23 flights)
- Sat55%(20 flights)
- Sun70%(23 flights)
- 9 AM–12 PM—(6 flights)
- 3–6 PM83%(18 flights)
- 6–9 PM61%(118 flights)
Jun 58% → May 40% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 58% | 26 |
| July 2025 | 52% | 29 |
| August 2025 | 77% | 31 |
| September 2025 | 88% | 17 |
| October 2025 | 61% | 23 |
| May 2026 | 40% | 10 |
- Departures on time
- 66%
- Diverted
- 1.4%
- Flights flown
- 142
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 145 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.