Flight OddsUA277 SFO → PDX
United Airlines · San Francisco, CA to Portland, OR · 42 flights observed, 2025-07-01 to 2025-08-18 · 550 mi
UA277 covers more than one route in the data window — the stats below are for SFO → PDX, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
95%
Median delay
-6 min
90th percentile
+6 min
Cancellation rate
2%
How often is UA277 on time?
Across 42 flights on SFO → PDX from 2025-07-01 to 2025-08-18, UA277 arrived within 15 minutes of schedule 95% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +6 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 39 | 95% |
| 16-30 min | 0 | 0% |
| 31-60 min | 1 | 2% |
| 61-120 min | 1 | 2% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 27 | 93% | +1 min |
| 2025-08 | 14 | 100% | -6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 100% |
| Tue | 7 | 86% |
| Wed | 7 | 100% |
| Thu | 6 | 100% |
| Fri | 7 | 86% |
| Sat | No data | — |
| Sun | 7 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…