Flight Reliability
UA 1996 · United Airlines
Chicago → San Juan (ORD–SJU)
89
Pretty Reliable
WanderNerd Reliability Score
- 82%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 0.3%
- Cancelled
- 4 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Saturday is the weak spot.
UA 1996 arrived on time 89% of the time on Wednesdays. On Saturdays: 77%.
A bit ahead of the ORD–SJU route.
UA 1996 arrived on time 82% of the time, versus 75% across the ORD–SJU route.
A bit ahead of the United Airlines network.
UA 1996 arrived on time 82% of the time, versus 79% across the United Airlines network.
It basically never cancels.
Out of 365 scheduled flights, only 0.3% were cancelled.
The breakdown
- Mon77%(52 flights)
- Tue85%(52 flights)
- Wed89%(52 flights)
- Thu83%(52 flights)
- Fri83%(52 flights)
- Sat77%(51 flights)
- Sun81%(53 flights)
84%
May
Jun 93% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 93% | 30 |
| July 2025 | 87% | 31 |
| August 2025 | 84% | 31 |
| September 2025 | 80% | 30 |
| October 2025 | 90% | 31 |
| November 2025 | 77% | 30 |
| December 2025 | 74% | 31 |
| January 2026 | 67% | 30 |
| February 2026 | 100% | 28 |
| March 2026 | 58% | 31 |
| April 2026 | 90% | 30 |
| May 2026 | 84% | 31 |
- Departures on time
- 89%
- Diverted
- 0%
- Flights flown
- 364
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 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.