Flight OddsAS128 PDX → SFO
Alaska Airlines · Portland, OR to San Francisco, CA · 261 flights observed, 2025-07-01 to 2026-04-21 · 550 mi
AS128 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
81%
Median delay
-2 min
90th percentile
+32 min
Cancellation rate
1%
How often is AS128 on time?
Across 261 flights on PDX → SFO from 2025-07-01 to 2026-04-21, AS128 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +32 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 208 | 81% |
| 16-30 min | 22 | 9% |
| 31-60 min | 19 | 7% |
| 61-120 min | 4 | 2% |
| 2+ hrs | 5 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 65% | +9 min |
| 2025-08 | 31 | 90% | +6 min |
| 2025-09 | 30 | 90% | -2 min |
| 2025-10 | 31 | 65% | +17 min |
| 2025-11 | 28 | 93% | 0 min |
| 2025-12 | 30 | 80% | +4 min |
| 2026-01 | 31 | 87% | +0 min |
| 2026-02 | 11 | 64% | +4 min |
| 2026-03 | 14 | 100% | -5 min |
| 2026-04 | 21 | 71% | +27 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 37 | 81% |
| Tue | 38 | 87% |
| Wed | 38 | 76% |
| Thu | 36 | 72% |
| Fri | 35 | 69% |
| Sat | 37 | 86% |
| Sun | 37 | 92% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…