Flight OddsAS304 SFO → SEA
Alaska Airlines · San Francisco, CA to Seattle, WA · 10 flights observed, 2025-12-04 to 2025-12-15 · 679 mi
AS304 covers more than one route in the data window — the stats below are for SFO → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
67%
Median delay
-4 min
90th percentile
+31 min
Cancellation rate
0%
How often is AS304 on time?
Across 10 flights on SFO → SEA from 2025-12-04 to 2025-12-15, AS304 arrived within 15 minutes of schedule 67% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +31 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 | 6 | 67% |
| 16-30 min | 2 | 22% |
| 31-60 min | 1 | 11% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 9 | 67% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 1 | 0% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 2 | 50% |
| Fri | 2 | 50% |
| Sat | 2 | 100% |
| Sun | 2 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…