Flight OddsUnited Airlines · San Antonio, TX to San Francisco, CA · 15 flights observed, 2026-04-30 to 2026-05-19 · 1,482 mi
UA5991 covers more than one route in the data window — the stats below are for SAT → SFO, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA5991 on time?
Across 15 flights on SAT → SFO from 2026-04-30 to 2026-05-19, UA5991 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +32 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 | 13 | 87% |
| 16-30 min | 0 | 0% |
| 31-60 min | 1 | 7% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 1 | 100% | -13 min |
| 2026-05 | 14 | 86% | +27 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 100% |
| Tue | 3 | 100% |
| Wed | No data | — |
| Thu | 3 | 67% |
| Fri | 3 | 67% |
| Sat | No data | — |
| Sun | 3 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…