Flight OddsAS1091 ONT → SEA
Alaska Airlines · Ontario, CA to Seattle, WA · 116 flights observed, 2025-07-01 to 2025-10-25 · 956 mi
AS1091 covers more than one route in the data window — the stats below are for ONT → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
93%
Median delay
-2 min
90th percentile
+14 min
Cancellation rate
1%
How often is AS1091 on time?
Across 116 flights on ONT → SEA from 2025-07-01 to 2025-10-25, AS1091 arrived within 15 minutes of schedule 93% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +14 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 | 107 | 93% |
| 16-30 min | 6 | 5% |
| 31-60 min | 2 | 2% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 94% | +1 min |
| 2025-08 | 31 | 100% | -6 min |
| 2025-09 | 29 | 83% | +5 min |
| 2025-10 | 24 | 96% | -2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 16 | 94% |
| Tue | 17 | 88% |
| Wed | 17 | 88% |
| Thu | 17 | 100% |
| Fri | 16 | 88% |
| Sat | 16 | 100% |
| Sun | 16 | 94% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…