Flight OddsUA2640 SEA → SFO
United Airlines · Seattle, WA to San Francisco, CA · 121 flights observed, 2025-08-19 to 2025-12-17 · 679 mi
UA2640 covers more than one route in the data window — the stats below are for SEA → SFO, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
83%
Median delay
-10 min
90th percentile
+39 min
Cancellation rate
0%
How often is UA2640 on time?
Across 121 flights on SEA → SFO from 2025-08-19 to 2025-12-17, UA2640 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +39 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 | 100 | 83% |
| 16-30 min | 6 | 5% |
| 31-60 min | 9 | 7% |
| 61-120 min | 4 | 3% |
| 2+ hrs | 2 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 13 | 92% | -6 min |
| 2025-09 | 30 | 87% | -4 min |
| 2025-10 | 31 | 74% | +19 min |
| 2025-11 | 30 | 80% | +0 min |
| 2025-12 | 17 | 88% | +5 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 17 | 94% |
| Tue | 18 | 94% |
| Wed | 18 | 78% |
| Thu | 17 | 71% |
| Fri | 17 | 88% |
| Sat | 17 | 82% |
| Sun | 17 | 71% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…