Flight Reliability
AA 4324 · American Airlines
Boise → Chicago (BOI–ORD)83% of its flights flew this route. The rest (ORD–BOI, DFW–CRP) are included in these numbers.
- 68%
- Arrive within 15 minutes
- 21 min
- Average arrival delay
- 0.4%
- Cancelled
- 3 min early
- Median arrival delay
Based on 259 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
AA 4324 departing between 9 PM–12 AM arrived on time 85% of the time, versus 67% between 12–3 PM.
Friday is doing you no favors.
AA 4324 arrived on time 83% of the time on Tuesdays and just 53% on Fridays. That gap is worth planning around.
Lagging the BOI–ORD route.
AA 4324 arrived on time 68% of the time, versus 77% across the BOI–ORD route.
Lagging the American Airlines network.
AA 4324 arrived on time 68% of the time, versus 77% across the American Airlines network.
The breakdown
- Mon71%(41 flights)
- Tue83%(35 flights)
- Wed59%(32 flights)
- Thu76%(37 flights)
- Fri53%(38 flights)
- Sat74%(34 flights)
- Sun63%(40 flights)
- 9 AM–12 PM68%(31 flights)
- 12–3 PM67%(176 flights)
- 3–6 PM70%(37 flights)
- 9 PM–12 AM85%(13 flights)
Jun 88% → Apr 83% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 88% | 25 |
| July 2025 | 68% | 31 |
| October 2025 | 79% | 14 |
| November 2025 | 50% | 28 |
| December 2025 | 41% | 29 |
| January 2026 | 67% | 30 |
| February 2026 | 96% | 28 |
| March 2026 | 64% | 55 |
| April 2026 | 83% | 12 |
- Departures on time
- 67%
- Diverted
- 0.4%
- Flights flown
- 257
- Months covered
- 10
Same route, other flights
Keep nerding
Based on 259 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.