Flight Reliability
UA 734 · United Airlines
Chicago → San Diego (ORD–SAN)
80
Pretty Reliable
WanderNerd Reliability Score
- 75%
- Arrive within 15 minutes
- 17 min
- Average arrival delay
- 0%
- Cancelled
- 1 min
- Median arrival delay
Based on 68 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
UA 734 arrived on time 90% of the time on Tuesdays and just 70% on Saturdays. That gap is worth planning around.
A bit behind the United Airlines network.
UA 734 arrived on time 75% of the time, versus 79% across the United Airlines network.
The breakdown
- Mon—(9 flights)
- Tue90%(10 flights)
- Wed70%(10 flights)
- Thu70%(10 flights)
- Fri90%(10 flights)
- Sat70%(10 flights)
- Sun—(9 flights)
68%
Oct
Aug 85% → Oct 68% on time
| Month | On-time percentage | Flights |
|---|---|---|
| August 2025 | 85% | 13 |
| September 2025 | 77% | 30 |
| October 2025 | 68% | 25 |
- Departures on time
- 72%
- Diverted
- 0%
- Flights flown
- 68
- Months covered
- 3
Same route, other flights
Keep nerding
Based on 68 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.