Flight OddsAS664 SEA → ONT
Alaska Airlines · Seattle, WA to Ontario, CA · 127 flights observed, 2025-10-26 to 2026-03-17 · 956 mi
AS664 covers more than one route in the data window — the stats below are for SEA → ONT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
-3 min
90th percentile
+36 min
Cancellation rate
2%
How often is AS664 on time?
Across 127 flights on SEA → ONT from 2025-10-26 to 2026-03-17, AS664 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +36 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 | 98 | 78% |
| 16-30 min | 11 | 9% |
| 31-60 min | 8 | 6% |
| 61-120 min | 7 | 6% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 83% | +5 min |
| 2025-11 | 29 | 79% | +6 min |
| 2025-12 | 15 | 60% | +14 min |
| 2026-01 | 31 | 74% | +11 min |
| 2026-02 | 28 | 79% | +5 min |
| 2026-03 | 16 | 100% | -15 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 19 | 79% |
| Tue | 18 | 83% |
| Wed | 17 | 65% |
| Thu | 18 | 78% |
| Fri | 17 | 88% |
| Sat | 18 | 78% |
| Sun | 18 | 78% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…