Flight OddsUA2623 BOS → SFO
United Airlines · Boston, MA to San Francisco, CA · 56 flights observed, 2026-04-30 to 2026-06-24 · 2,704 mi
UA2623 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
82%
Median delay
-1 min
90th percentile
+33 min
Cancellation rate
0%
How often is UA2623 on time?
Across 56 flights on BOS → SFO from 2026-04-30 to 2026-06-24, UA2623 arrived within 15 minutes of schedule 82% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +33 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 | 46 | 82% |
| 16-30 min | 3 | 5% |
| 31-60 min | 5 | 9% |
| 61-120 min | 2 | 4% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 1 | 100% | -17 min |
| 2026-05 | 31 | 84% | -3 min |
| 2026-06 | 24 | 79% | +9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 88% |
| Tue | 8 | 100% |
| Wed | 8 | 88% |
| Thu | 8 | 75% |
| Fri | 8 | 75% |
| Sat | 8 | 75% |
| Sun | 8 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…