Flight OddsUA231 EWR → SFO
United Airlines · Newark, NJ to San Francisco, CA · 20 flights observed, 2026-01-08 to 2026-02-09 · 2,565 mi
UA231 covers more than one route in the data window — the stats below are for EWR → SFO, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
74%
Median delay
-2 min
90th percentile
+79 min
Cancellation rate
5%
How often is UA231 on time?
Across 20 flights on EWR → SFO from 2026-01-08 to 2026-02-09, UA231 arrived within 15 minutes of schedule 74% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +79 min or later. 5% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 14 | 74% |
| 16-30 min | 1 | 5% |
| 31-60 min | 1 | 5% |
| 61-120 min | 1 | 5% |
| 2+ hrs | 2 | 11% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 13 | 62% | +21 min |
| 2026-02 | 6 | 100% | -9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 60% |
| Tue | No data | — |
| Wed | 1 | 100% |
| Thu | 5 | 60% |
| Fri | 5 | 80% |
| 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…