Flight OddsUA1791 SFO → ORD
United Airlines · San Francisco, CA to Chicago, IL · 49 flights observed, 2025-07-01 to 2025-08-18 · 1,846 mi
UA1791 covers more than one route in the data window — the stats below are for SFO → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
63%
Median delay
+5 min
90th percentile
+61 min
Cancellation rate
0%
How often is UA1791 on time?
Across 49 flights on SFO → ORD from 2025-07-01 to 2025-08-18, UA1791 arrived within 15 minutes of schedule 63% of the time. The median arrival delay was +5 min, and the worst 10% of flights arrived +61 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 30 | 63% |
| 16-30 min | 8 | 17% |
| 31-60 min | 4 | 8% |
| 61-120 min | 4 | 8% |
| 2+ hrs | 2 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 63% | +14 min |
| 2025-08 | 18 | 61% | +26 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 57% |
| Tue | 7 | 43% |
| Wed | 7 | 71% |
| Thu | 6 | 50% |
| Fri | 7 | 57% |
| Sat | 7 | 57% |
| Sun | 7 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…