Flight OddsAS1304 SJC → SEA
Alaska Airlines · San Jose, CA to Seattle, WA · 142 flights observed, 2025-10-26 to 2026-06-09 · 696 mi
AS1304 covers more than one route in the data window — the stats below are for SJC → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
79%
Median delay
-6 min
90th percentile
+23 min
Cancellation rate
1%
How often is AS1304 on time?
Across 142 flights on SJC → SEA from 2025-10-26 to 2026-06-09, AS1304 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +23 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 | 112 | 79% |
| 16-30 min | 17 | 12% |
| 31-60 min | 7 | 5% |
| 61-120 min | 4 | 3% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 3 | 33% | +9 min |
| 2025-11 | 12 | 83% | +6 min |
| 2025-12 | 12 | 75% | +11 min |
| 2026-01 | 26 | 88% | -6 min |
| 2026-02 | 25 | 96% | -3 min |
| 2026-03 | 14 | 86% | -5 min |
| 2026-04 | 9 | 44% | +12 min |
| 2026-05 | 31 | 74% | +4 min |
| 2026-06 | 9 | 67% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 23 | 78% |
| Tue | 17 | 88% |
| Wed | 17 | 71% |
| Thu | 23 | 70% |
| Fri | 19 | 74% |
| Sat | 19 | 84% |
| Sun | 23 | 91% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…