Flight OddsUA1958 BOS → SFO
United Airlines · Boston, MA to San Francisco, CA · 25 flights observed, 2026-01-08 to 2026-02-09 · 2,704 mi
UA1958 covers more than one route in the data window — the stats below are for BOS → SFO, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
83%
Median delay
-16 min
90th percentile
+29 min
Cancellation rate
4%
How often is UA1958 on time?
Across 25 flights on BOS → SFO from 2026-01-08 to 2026-02-09, UA1958 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -16 min, and the worst 10% of flights arrived +29 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 20 | 83% |
| 16-30 min | 2 | 8% |
| 31-60 min | 1 | 4% |
| 61-120 min | 1 | 4% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 17 | 88% | -19 min |
| 2026-02 | 7 | 71% | +9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 40% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 5 | 80% |
| Fri | 5 | 100% |
| Sat | 5 | 100% |
| Sun | 4 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…