Flight OddsAS1040 SEA → ONT
Alaska Airlines · Seattle, WA to Ontario, CA · 74 flights observed, 2025-07-01 to 2025-10-03 · 956 mi
AS1040 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
59%
Median delay
+10 min
90th percentile
+63 min
Cancellation rate
0%
How often is AS1040 on time?
Across 74 flights on SEA → ONT from 2025-07-01 to 2025-10-03, AS1040 arrived within 15 minutes of schedule 59% of the time. The median arrival delay was +10 min, and the worst 10% of flights arrived +63 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 | 44 | 59% |
| 16-30 min | 9 | 12% |
| 31-60 min | 13 | 18% |
| 61-120 min | 6 | 8% |
| 2+ hrs | 2 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 47% | +30 min |
| 2025-08 | 25 | 64% | +15 min |
| 2025-09 | 17 | 76% | -1 min |
| 2025-10 | 2 | 50% | +14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 13 | 54% |
| Tue | 7 | 57% |
| Wed | 7 | 57% |
| Thu | 14 | 57% |
| Fri | 13 | 62% |
| Sat | 7 | 86% |
| Sun | 13 | 54% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…