Flight Reliability
AA 538 · American Airlines
Pittsburgh → Chicago (PIT–ORD)84% of its flights flew this route. The rest (LAX–BOS) are included in these numbers.
- 86%
- Arrive within 15 minutes
- 10 min
- Average arrival delay
- 1.6%
- Cancelled
- 10 min early
- Median arrival delay
Based on 129 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
AA 538 departing between 6–9 AM arrived on time 92% of the time, versus 50% between 6–9 PM.
Friday is doing you no favors.
AA 538 arrived on time 95% of the time on Sundays and just 74% on Fridays. That gap is worth planning around.
A bit ahead of the PIT–ORD route.
AA 538 arrived on time 86% of the time, versus 79% across the PIT–ORD route.
Better than the American Airlines network average.
AA 538 arrived on time 86% of the time, versus 77% across the American Airlines network.
The breakdown
- Mon76%(21 flights)
- Tue81%(16 flights)
- Wed94%(16 flights)
- Thu90%(20 flights)
- Fri74%(19 flights)
- Sat94%(16 flights)
- Sun95%(19 flights)
- 3–6 AM—(4 flights)
- 6–9 AM92%(88 flights)
- 12–3 PM81%(21 flights)
- 6–9 PM50%(14 flights)
Jun 97% → Mar 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 97% | 30 |
| July 2025 | 90% | 31 |
| August 2025 | 90% | 29 |
| October 2025 | 50% | 14 |
| March 2026 | 81% | 21 |
- Departures on time
- 91%
- Diverted
- 0%
- Flights flown
- 127
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 129 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.