Flight OddsAS3421 SEA → PDX
Alaska Airlines · Seattle, WA to Portland, OR · 30 flights observed, 2025-11-21 to 2026-01-06 · 129 mi
AS3421 covers more than one route in the data window — the stats below are for SEA → PDX, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
77%
Median delay
-7 min
90th percentile
+29 min
Cancellation rate
0%
How often is AS3421 on time?
Across 30 flights on SEA → PDX from 2025-11-21 to 2026-01-06, AS3421 arrived within 15 minutes of schedule 77% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +29 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 | 23 | 77% |
| 16-30 min | 4 | 13% |
| 31-60 min | 2 | 7% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-11 | 9 | 89% | -9 min |
| 2025-12 | 15 | 80% | 0 min |
| 2026-01 | 6 | 50% | +52 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 80% |
| Tue | 4 | 50% |
| Wed | 3 | 100% |
| Thu | 3 | 67% |
| Fri | 5 | 80% |
| Sat | 5 | 60% |
| Sun | 5 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…