Flight OddsUA1998 PDX → SFO
United Airlines · Portland, OR to San Francisco, CA · 92 flights observed, 2025-07-01 to 2025-10-24 · 550 mi
UA1998 covers more than one route in the data window — the stats below are for PDX → SFO, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
70%
Median delay
-4 min
90th percentile
+44 min
Cancellation rate
0%
How often is UA1998 on time?
Across 92 flights on PDX → SFO from 2025-07-01 to 2025-10-24, UA1998 arrived within 15 minutes of schedule 70% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +44 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 | 64 | 70% |
| 16-30 min | 11 | 12% |
| 31-60 min | 14 | 15% |
| 61-120 min | 3 | 3% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 68% | +7 min |
| 2025-08 | 27 | 78% | +1 min |
| 2025-09 | 20 | 75% | +7 min |
| 2025-10 | 14 | 50% | +15 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 16 | 81% |
| Tue | 7 | 71% |
| Wed | 7 | 71% |
| Thu | 17 | 59% |
| Fri | 17 | 65% |
| Sat | 12 | 83% |
| Sun | 16 | 63% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…